Home

Goodman Mfg VC8 User's Manual

1. 4 poonpur JIO YoUMS 10 jurod 1921109 YIM Aressooou 395 oInssoid Kquo 8 5 yeap Se 1294100 JIO uo 51 4 e uoneurutoj pue 8 yeom 10 5 poxoo q Sune1odo jueurooe doi 1091100 oSexpo q Suidid edid 10 pue pexoorgq SI YeIp e epoo 10119 sepr oud ounssoid ooe dos jour 10 pue yoodsuy posojo Ke dsrp medar Aressooou 10 JOU SI YOJIMS 9885 UO soje1edo 01 Jord 440 Jomod esoq yoodsuy P9390 q 9504 yms 2MSS91q 64 4 5 911155914 8 5 e 98215 YSIY uo oj sprey K uo 9885 MOI 51 e 34941298491 3991109 YIM Suum SI poonpuy e epoo 10119 ounsso1d SULIIM poys onssoJd 511048 21049 Surjeou Jo 1125 2
2. _ ejdsip 0 440 Jomod SULIIM 3294100 pue 12945 IoUBI LA YALINDI 19 yum e 0j ooeum se ysn py oyejd Sunes 4 sea oinssoid 528 o1eduio 107 Sunes oos pue srejop Surdid 107 smog 80 1odo1d eSexoo q uonsnquioo 995 Surdid yoyo 10 91155914 528 1odo1duur 42871 105495 pues 105495 10 yoodsuy peuonisod epoo 93 Josuos 4 SI 20815 _ Ke dsip 03 440 Jomod uin Ji 10suos pues 61 105096 SUP 93 dure osu s oum q e 99 uone1edo AI ed A S EIdSIP 383500191 w1 9NHOJWOO duie c osny eov dos epoo 10119 63 sopraoid medos SULIIM Ke dsip 0 Jord 440 Jomod un UI JIOUS 199 109 pue 3 2071
3. 03 8 OV MOT SITOA JOAO 10J 51145 Ke dsrp 03 440 Jomod ooeuin 0 JII 0 OUI DV USIH 94 YOLOW gq ooeum y K1essooou JI 10 ooe doq 20014 ed pue 510125 303500790 3994109 YIM 99uA ooe doq 1 JIO uoot 2214196 ed Aressooou sSureoq 10 1815001910 3294109 aoe doy Jl ooe do1 1redo1 JOJOUI 71 SATINDOSUOD pue Sursnoq 0137835 03 SITEJ ejdsip jomuos 01 440 Jomod 10 xou 1 UI UOT ON SGO cq CYOT XIN 54 ooeumq JO ooeuung jo oSexoo q 4 21594 510125 3035001190
4. suoripuoo yry sosuos U01 INAS 1 18350019 10 ooeuunj oSexoo q epoo medar pue 1 518 1 5 118 uoppns 1o poeds eSueqo SJL 10301 JO 550 sosuos Qa 01 oud 440 1o od 1 JOO uoppns 1 F4 YOLOW 10 0 e eje1edo SUODE 29 9 0N SUOIJ2V 9AD29 107 Ssosne o qissoq opo wI ELO LIU uondrdosoq spo UITAE 3 REPRE ROO L6 009 lt 43 STATUS CODES L INTERNAL CONTROL FAULT NO POWER 0 NORMAL OPERATION 0 LOCKOUT DUE TO EXCESSIVE RETRIES LOW STAGE PRESSURE SWITCH STUCK CLOSED AT START OF HEATING CYCLE E OPEN FUSE 6 LOW FLAME SIGNAL IGNITER FAULT OR IMPROPER GROUNDING HIGH STAGE PRESSURE SWITCH STUCK CLOSED AT START OF HEATING CYCLE 9 HIGH STAGE PRESSURE SWITCH STUCK OPEN REVERSED 115 VAC POLARITY d 0 DATA NOT YET ON NETWORK 9 INVALI
5. 29 aperado 0 s rej ooeumq 4 1921109 onuoo Aressooou YYD 5110125 3035001190 y 119 NTHOJUIO JIO WOOT 291 19 394109 Aressooou ooe dow 10 1185 193800190 1 JIO e 1 suoneorunururoo epoo 10119 ed r uonoouuoo 1 WNOD 1501 sey 0 Jord 440 SULIIM 3291109 10 je uoroeuuoo SULIIM 95001 e 14 YOLOW onuoo e 19 s rej JOMOT red K1essooou soe doy puo dH pue eSessoui 1994109 YM JOO UONSOUUOS Sura YOOYD 51102195 185001191 1030 sov doy 3104 10 uodo 95001 10 JOJONPUT
6. LED LED Indication Possible Causes Corrective Action s Notes amp Cautions Status Off Normal condition None e None e None 1 Flash Communications Communications e Depress Learn Button Depress once Failure Failure Verify that bus BIAS quickly for a power Red and TERM up reset Communications dipswitches inthe Depress and hold LED ON position for 2 seconds for an out of box reset 2 Flashes Out of box reset e Control power up e None e None e Learn button depressed Off e No power No power to furnace e Check fuses and e Turn power OFF Communications Open fuse circuit breakers prior to repair error Communications error replace reset e Replace blown fuse Check for shorts in low voltage wiring in furnace system e Reset network by depressing learn button Check data 1 data 2 voltages 1 Steady e No network found e Broken disconnected e Check e Turn power OFF Flash data wire s communications prior to repair e Furnace is installed as wiring data 1 data 2 e Verify wires at a legacy traditional wires terminal blocks are system e Check wire securely twisted connections at together prior to Green Receive terminal block inserting into LED Verify furnace terminal block installation type e Verify data1 and legacy traditional or data voltages as communicating described above Check data 1 data 2 voltages Rapid Normal network Control is
7. 03 Jord 440 Jomod 1091100 SI JOS uo jos ejep e CITFANI pied HP ou 10 pojoedxe SUODE 29 9 0N SUOIJ2V 9AD29 107 Sosne o qissoq opo sowy L 119 10 3 4 4 42 TROUBLESHOOTING CHART JIOMJONP eoe doi ozisow Ulojs s pozis K oyeridoudde st APIA 519951891 uononijsqo YIOMIoNp yooyD 109113540 7 10119 Ke dsip 1 10 819 WLAD Xio jonp eAnornso MO TAMIV popueurop SI 98835 YSIY USM 28035 MOT UO 10 01 440 uin 1 JOMI pexoorg 69 GI MOT uey JOMO SI poonpoi 8 5 opoo 10119 oos
8. aa nsus asas ausa ausa 17 24 VOLTDEHUMIDISTAT WIRING 5 53 a ad NE M nach di du ra en ip SR 17 FOSSIL FUEL APPLICATIONS airo mi cr exa ES ERRARE CS IAE cas E RES ais 17 115 LINE CONNECTION OF ACCESSORIES HUMIDIFIER AND ELECTRONIC AIR CLEANER 18 2A MOLT PIUMIDIPIER MT TRUE NITITUR 18 GAS SUPPLY AND PIPING Rise dico dirae 18 ALITIUDE 18 PROPANE GAS CONVERSION dan a 18 GAS PIPING CONNECTIONS Rae phi edad eas 18 UPFUOW INSTALLATIONS 20 COUNTERFEOW INSTALLATIONS 22265 CNN ERN RE 20 GAS PIPING C HEGKS RR 20 PROPANE GAS TANKS AND PIPING eese eee nnmnnn 21 CIRCULATING AIR AND FILTERS nn assa asa asas asas asas aaa 21 CHECKING DUCT STATIC ann nt aa d b nem dado d Du 22 FILTE
9. redox Sur ons sjoejuoo poso o st YAMS 8 5 UO soje1odo 01 Jord 440 Jomod 911155914 8 5 ysty YOUMS ounsso1d 8 5 91 254 911155914 8 5 YSIH e 83 98215 YSIY uo sprey 29 5930 CU 9AIJ29 107 sasne 14915504 opo 38350319 9 TD s p0 PIGET ECT REPE ENER CO L0 009 AIZIT jeur10uqy 4 41 TROUBLESHOOTING CHART 10 SUONDAAPISUOD 9 sjuamasnbay 2 uonduosaq 998 JIOMJONP 29 do1 9ZIS9Y urejs s pezis K oyeuidoudde st 519351891 90 eSexoo q 10 JIOMJONP JOI semjeroduioj SI X10 jonp POZISISPUN e uonrpuoo poods 10 epoo 10119 Eq soprAo1d Ke dsip 2 nedor 10 WLAD HIOMJONP SLINIT ur Surerodo st _ uey 5591 SI
10. uoot 991195 OBULI S 10 poods 1291107 pue 10 uedo 10 820 1 o qeor dde poods JIMI peeds ST jno o epoo 10110 sepr o1d 19945 uoneorroeds 998 0001 4840 uodo ejdsip 447 2 nedos JO 8193 eSexpo q pexoo g oy ST JNM jun uore1odo 0 440 Jomod 10 JIOMJONP pue 2942 2 10 e ON A snonunuos suni 29 SIJON SUOIJ2 V Sosne o qissoq epo Auo uondrsoq snJu S 21SOUSEIE CELA OUT EL REPRE EINER LO LU 009 8 103 DENS 40 TROUBLESHOOTING CHART ejep oouo preo 440 Mod SI Jaye pres NO
11. 29 OVERVEN tals secre cx dens aceasta AME caus 29 CONSIDERATIONS 29 FOSSIL FUEL APPLICATIONS dd nou E 30 30 SYSTEM ADVANCED FEATURES eese eene rasan aun 30 NETWORK TROUBLESHOOTING dbaiesetcartaaed cbadcenicmeinestanideaaes 33 SYSTEM TROUBLESHOOTING fe 33 NORMAL SEQUENCE OF OPERATION 34 POWER UP 34 PIEATING MODE ED D T DIC D 34 COOUNG MODE ET 35 ONEC MODE iiic eeu e scat uct 35 OPERATIONAL HECKS 35 SAFETY CIRCUIT DESCRIPTION nanas anna Di DI 36 INTEGRATED CONTROL MODULE anne anna 36 cack Cad SE ea eee 36
12. ana ne 36 ROLLOUT 36 PRESSURE SWITCHES ca x 36 FLAME SENSOR a nt 36 TROUBLESHOOTING 36 ELECTROSTATIC DISCHARGE ESD PRECAUTIONS ire 36 DIAGNOSTIC CHART M 36 D E 37 end ca RNC 37 2 gt 55 ax datae 37 ANNUAL INSPECTION scisco 37 FETERS SN ad a E EE en 37 EURNERS dM E EI CC EC LM M MEM M ea ta MM EU LM MEE 38 INDUCED DRAFT AND CIRCULATOR BLOWERS eene nnne uisa nasa asas uasa 38 FLAME SENSOR QUALIFIED SERVICER ONLY 1 38 FLUE PASSAGES QUALIFIED SERVICER 38 BEFORE LEAVING AN INSTALLATIONS 38 AND REPLACEMENT PARTS cnicciicccaccnacccaicncscscncucetenouakcvnienssancsatenavadanstaueseaavassieuseenaicnavenevendeecateesentannas 38 WROUBLESHOOTING OLTA a 39 STATUS CODES 2 44 PAIR COW Meses M Rc
13. d m 6 PRODUCT APPEICATION mit cn 6 LOCATION REQUIREMENTS AND CONSIDERATIONS 7 CLEARANCES AND ACCESSIBILITY eese as 8 HORIZONTAL INSTALLATION MVC8 MODELS 8 FURNACE SUSPENSION 8 EXISTING FURNACE REMOVAL 8 JHERMOSTAT LOCATION 9 COMBUSTION AND VENTILATION AIR REQUIREMENTS 9 CATEGORY VENTING 10 EXTERIOR Masonry CHIMNEYS CATEGORY FURNACES ONLY eee 11 CHECKLIST SUMMARY alee eeu Ee e E dera Cua dad 11 CHECK 1 PROPER CHIMNEY TERMINATION asas 12 CHECK 2 ANY SOLID OR LIQUID FUEL APPLIANCES VENTED INTO THIS CHIMNEY CHANNEL eene nnn nnn 12 CHECK CHIMNEY CROWN CONDITION 13 CHECK 4
14. 440 Jomod 1 JOMI SIO e q YOLOW JOJOUI e Eq eoueunoj1ed you 2510 1 pue gyep oouo opoo JOUA pred 9107949 Jomod uin pepeo SI Joye oq pres NO Jomod suruin 40488 poumboz jt pres 11950 Sursn oye ndod 5 ogroods oy oytoads 10 YOOYD 8102195 38150194 24 peo 55 3091100 SI Jos APIA 95104 301 195 Aressooou opour 0340 1 18380319 1991109 YIM y 107 4 UI JOS e Yeu JOU soop 195 epoo SI Jamod 95104 eo ung HOLVWSIW poieus osioq 2 ejdsip 03 440 Jomod JOJOUI JOJOUI 1 JOOIIOOUT e YOLOW 1
15. Model DVC80703BX Low Stage Stage Low Stage 600 735 800 805 000 875 200 935 High Stage Heat 390 520 650 780 520 DVC80905CX DVC81I55CX MVC80704BX MVC80905CX MVC81II55CX Oo Co eII vo N N B D A B C D B C D B D A B C D B D NOTE Airflow data shown applies to legacy mode operation only For fully communicating system please see the outdoor unit s installation instructions for cooling and pump heating airflow data See ComfortNet System Airflow Consideration section for details Dip SwircHES Peres Function Heat OFF 120 seconds Delay 150 seconds Bus BIA TERM Thermostat Cooling Adjust Ramping Profiles Heating Speed Tap Dis abled Enabled Not applicable DIP Sw itch No nused nused Indicates factory setting MVC8 AA Wirinc DIAGRAM ui lt H gt 9 5 2 o z d d o n o gt 14 o 4 m n d 2 MULTIPLE POWER SOURCES MAY BE PRESENT FAILURE TO DO SO MAY CAUSE PROPERTY DAMAGE PERSONAL INJURY OR DEATH WARNING ID BLOWER TWO STAGE PRESSURE SWITCH ASSEMBLY YL gt YL HOT SU
16. A ComfortNet heating air conditioning system differs from a legacy traditional system in the manner in which the indoor unit outdoor unit and thermostat interact with one another In a traditional system the thermostat sends commands to the indoor and outdoor units via analog 24 VAC signals Itis a one way communication path in that the indoor and outdoor units typically do not return information to the thermostat On the other hand the indoor unit outdoor unit and thermo stat comprising a ComfortNet system communicate digitally with one another It is now a two way communications path The thermostat still sends commands to the indoor and out door units However the thermostat may also request and receive information from both the indoor and outdoor units This information may be displayed on the CT thermostat The in door and outdoor units also interact with one another The outdoor unit may send commands to or request information from the indoor unit This two way digital communications be tween the thermostat and subsystems indoor outdoor unit and between subsystems is the key to unlocking the benefits and features of the ComfortNet system Two way digital communications is accomplished using only two wires The thermostat and subsystem controls are power with 24 VAC Thus a maximum of 4 wires between the equip ment and thermostat is all that is required to operate the sys tem AIRFLOW CONSIDERATIONS Airflow de
17. 21155944 19409 JUOY JOO uodo yonys ornssoid 19409 303 10119 soprAo1d medar uondnuojur sIOWING 01 528 ou 10 15590 Ke dsip 0 440 Jomod 528 PUL 2 7 4519159 on re q OF 410 20 310320 0 0 s rej oovumq UON d sexeorpur sred juourooe dor juo1mo ONUOS jo uoroes Kressooou ue seu o npour onejsonoo mg se SIMONI HOA pz pue o3juoo poje18oju 8 ooteum q ur suogneoodd peo SI UI SHOUS 21915509 yooyD eu1ojur loxeolq YOOYO 10205 33500290 yo NT0JUIO 7 esng Kressooou y ue seq ojuoo 10 UMOIY pojeurumjr uoor VE xou Joyeoig o npour 3838001290 wrIONOFUIOD e npour 95001 10 payoouu
18. HUM gt _ NEUTRAL H a HUMIDIFIER emo TIOHLNOO NEUTRAL HOT SURFACE IGNITER FLAME SENSOR 115 VAC NEUTRAL 40 VA TRANSFORMER 924 vac AUTO RESET AUXILIARY CONTROLS AUTO RESET PR MARY LIMIT CONTROL VDC LOW FIRE PRESS 24V HUM 52 12 c HIGH FIRE PRESS SWTICH MANUAL RESET ROLLOUT LO3NNOO IWLSOWHSHL Abe LIMIT CONTROLS 11 INDOOR AIR CIRCULATOR BLWR INTEGRATED CONTROL MODULE L HUMIDIFIER WOYLNOD NOTES EQUIPMENT GND COLOR CODES PK PINK BR BROWN WH WHITE BL BLUE GY GRAY RD RED YL YELLOW OR ORANGE PU PURPLE GN GREEN BK BLACK LOW VOLTAGE 24 V LOW VOLTAGE FIELD HI VOLTAGE 115 V HI VOLTAGE FIELD JUNCTION TERMINAL INTERNAL TO INTEGRATED CONTROL PLUG CONNECTION TH 1 SET HEAT ANTICIPATOR ON RO OM THERMOSTAT AT 0 7 AMPS 2 MANUFACTURER S SPECIFIED REPLACEMENT PARTS MUST USED WHEN SERVICING 3 IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE REPLACED IT MUST BE REPLACED WITH WIRING MATERIAL HAVING ATEMPERATURE RATING OF AT LEAST 105 C USE COPPER CONDUCTORS ONLY 4 UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM N E C AND LOCAL CODES 5 TO RECALL THE LAST 6 FAULTS MOST RECENT LEAST RECENT DEPRESS SWITCH FOR MORE THAN 2 SECONDS WHILE IN STANDBY NO THERMOSTAT
19. GND 14 BLOWER INDOOR qd Dp COMPARTMENT m S DOOR SWITCH J OPEN WHEN i MICRO BLWR CIRCULATOR INDUCTOR COIL BOOROREN Ld BLOWER INTEGRATED CONTROL MODULE ONY HUMIDIFIER lec NOTES COLOR CODES LOW VOLTAGE 24V rh 1 SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0 7 AMPS PK PINK 2 MANUFACTURER S SPECIFIED REPLACEMENT PARTS MUST BE BR BROWN LOW VOLTAGE FIELD FIELD GND USED WHEN SERVICING 3 IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE arene HLVOLTAGE FIELD SPLICE 7 FURNACE MUST REPLACED IT MUST BE REPLACED WITH HI VOLTAGE FIELD WIRING MATERIAL HAVING TEMPERATURE RATING OF AT GY GRAY SWITCH TEMP 9 17 LEAST 105 C USE COPPER CONDUCTORS ONLY RD RED JUNCTION 4 UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO YL YELLOW IGNITER N E C AND LOCAL CODES OR ORANGE TERMINAL 0 5 TO RECALL THE LAST 6 FAULTS MOST RECENT TO LEAST PU PURPLE INTERNAL TO SWITCH PRESS RECENT DEPRESS SWITCH FOR MORE THAN 2 SECONDS WHILE GN GREEN INTEGRATED CONTROL OVERCURRENT IN STANDBY NO THERMOSTAT INPUTS BK BLACK PLUG CONNECTION PROT DEVICE 0140200660 REV Wiring is subject to change Always refer to the wiring diagram on the unit for the most up to date wiring 47 Goodman Manufacturing Company L P 5151 San Felipe Suite 500 Houston TX 77056 www goodmanmfg com 2009 2010 Goodman Manufacturing Company
20. DEBRIS IN CLEANOUT 13 CHECK O LINER CONDITION 13 CHECK G DILUTION TR 13 CHECK 7 COMPLETE THE INSTALLATION siescncnacdiactsaasasasacanasaaanseasiansseaeicaudaweacuedtwedseediacdagaapadapoaiwaasanavaeaes 13 Fix T LINER TERMINATION 2 225 tunis Cod REL CER ECR E nC 14 Fix 2 CHANGE VENTING ARRANGEMENTS eene nnn asa sas asas assa ausa sas k assa nasa 14 Fix 3 REBUILD THE GROWN 2555 6a ou dates vests EDDA BEDAE 14 FRE MINING Di A cU Bus ER amp o Ne cis A A 14 ELECTRICAL CONNECTIONS RR CEA Ron doc du VRBE NER asie 15 FIARNESS iioii ruri D AR ML ox cric cud On Deom d cu REIR Ga Cu E DEAE EE DIEI Uc RE 15 115 VOLT LINE CONNECTIONS an c Rr Ma ES e ES beri Co i Re ce Gc n n did Vela d la m Re 15 JUNCTION BOX IREEOCATION 5 DRE SERI VAR CU GENE VER FE DINE DLE 16 24 VOLT THERMOSTAT WIRING onbres on i dn dan aor aon 16 SINGLE STAGE HEATING THERMOSTAT APPLICATION
21. Ground Joint Pipe Union Height Required By Local Code Ground Joint Pipe Union To Be Installed Ahead of Gas Valve Drip Leg Reducing Coupling 1 2 x 1 8 with 1 8 Pipe Plug to Measure Line Gas Pressure General Furnace Layout UPFLOW INSTALLATIONS When the gas piping enters through the right side of the fur nace the installer must supply the following fittings starting from the gas valve e Close nipple 90 degree elbows Straight pipe to reach the exterior of the furnace A ground joint union drip leg and manual shutoff valve must also be supplied by the installer In some cases the installer may also need to supply a transition piece from 1 2 to another pipe size When the gas piping enters through the left side of the furnace the installer must supply the following fittings starting from the gas valve 90 degree elbow Straight pipe to reach the exterior of the furnace Aground joint union drip leg and manual shutoff valve must also be supplied by the installer In some cases the installer may also need to supply a transition piece from 1 2 inch to another pipe size COUNTERFLOW INSTALLATIONS When the gas piping enters through the left side of the furnace the installer must supply a straight pipe and a 90 degree elbow to reach the exterior of the furnace A ground joint union drip leg and manual shutoff valve must also be s
22. Inlet Pressure 1 8 NPT Manometer 8 Honeywell Model VR9205 Connected to Manometer Outlet Pressure Tap 1 8 NPT 1 Turn OFF gas to furnace at the manual gas shutoff valve external to the furnace 2 Connect calibrated water manometer or appropriate gas pressure gauge at either the gas valve inlet pressure boss or the gas piping drip leg See Honeywell VR9205 gas valve figure or White Rodgers 36G54 gas valve figure for location of inlet pressure boss NOTE If measuring gas pressure at the drip leg or Honeywell VR9205 gas valve a field supplied hose barb fitting must be installed prior to making the hose connection If using the inlet pressure boss on the White Rodgers 36G54 gas valve then use the 36G Valve Pressure Check Kit Goodman Part No 0151K000008 3 Turn ON the gas supply and operate the furnace and all other gas consuming appliances on the same gas supply line 4 Measure furnace gas supply pressure with burners firing Supply pressure must be within the range specified in the nlet Gas Supply Pressure table Inlet Gas Supply Pressure Natural Gas Minimum 5 0 w c Maximum 10 0 w c Maximum 13 0 w c Minimum 11 0 w c If supply pressure differs from table make the necessary ad justments to pressure regulator gas piping size etc and or consult with local gas utility 5 Turn OFF gas to furnace the manual shutoff valve and disconnect manometer Reinstall plug
23. L P 48
24. National Fuel Gas Code 54 ANSI 7223 1 latest edition 14 ELECTRICAL CONNECTIONS and in the National Standard of Canada CAN CSAB149 1 and CAN CSA B149 2 latest editions and amendments To install the liner read and follow the liner manufacturer s in structions and your local codes Excess liner length should be pulled out of the chimney and cut off Use caution when doing this as the cut edges of flexible liners may be sharp Do not spiral excess liner inside of the chimney Support the liner as recommended by the liner manufacturer Some manufacturers of flexible liners offer an insulation sleeve designed to be added to the liner before it is installed in the chimney Poured insulation either vermiculite or other materi als is no longer recommended Insulation will need to be added to the flexible liner if e Itis required by the liner manufacturer s instructions previous liner was properly sized and installed and suffered from condensation damage e Itis required by your local building codes Even if none of those three conditions exist which require addi tional liner insulation the installer may wish to consider it if The local climate is very cold The chimney is very tall The vent connectors used are very long or have a large number of elbows Local experience indicates that flexible liners installed without insulation are likely to have condensation problems Insulat
25. quM System Wiring between Furnace and Non CT Compatible Single Stage Air Conditioner CT Compatible Furnace Integrated Control Module Non CT Compatible Single Stage AC System ADVANCED FEATURES The ComfortNet system permits access to additional system information advanced setup features and advanced diagnos tic troubleshooting features These advanced features are or ganized into a menu structure The menus are accessed and navigated as described in the following section 30 ACCESSING AND NAVIGATING THE ADVANCED FEATURES MENUS The advanced system features are accessed using the ComfortNet thermostat These advanced features are accessed as follows On the CT thermostat Home Screen Display touch the Menu key to display additional key choices Touch and hold the Installer Config key for approximately 3 seconds to enter the Thermostat Options Configuration menu Touch and hold the Installer Config key again for approximately 3 seconds to enter the Advanced Installer Configuration menu e A Set Time est Schedule Schedule Installer onfig Clean Display Upon entering the advanced menus the Advanced Fault Menu is displayed The display will change to the Fault Screen and indicate any faults that may be present in the indoor or outdoor equipment Ifa faultis present the Fault Screen will show the equipment and an error code with a description of the fau
26. talking on None None Flashing traffic network as expected On Solid Data 1 Data 2 e Data 1 and data 2 e Check e Turn power OFF miss wire wires reversed at communications prior to repair furnace thermostat wiring data 1 data 2 e Verify wires at or CT compatible wires terminal blocks are outdoor AC HP e Check wire securely twisted e Short between data 1 connections at together prior to and data 2 wires terminal block inserting into Short between data 1 Check data 1 data 2 terminal block or data 2 wires and voltages e Verify data1 and 24VAC 24 data voltages as common described above NORMAL SEQUENCE OF OPERATION Power Up The normal power up sequence is as follows 115 VAC power applied to furnace Integrated control module performs internal checks Integrated control module displays BB on dual 7 segment display LED s Integrated control module monitors safety circuits continuously Furnace awaits call from thermostat Dual 7 segment LED s display while awaiting call from thermostat HEATING The normal operational sequence in heating mode is as fol lows Rand W1 or and W1 W2 thermostat contacts close initiating a call for heat e Integrated control module performs safety circuit checks Induced draft blower is energized on high speed for a 15 second prepurge Humidifier terminal is energized with induced draft blower Induced draft b
27. uod e Uoo 4991109 jreow dow 10 180 181500191 YIM speo Jamod Suruuni p nous epoo 10119 pq uonoouuoo JO Speo Jomod NNA ION jou st 03 440 Jomod uin SULIM J991109 10 093081 je SULIM 95007 04 YOLOW 1 e 09 aperado 0 s rej st oouo II opoo 10414 pred 910Joq 440 Jomod uin Pepe NO YIOYO 5110198 18350019 Jomod FAOIAA UOT 9211196 1195 10 323501943 pou ogroeds j1 10110 10 pred 9811 3292109 Sursn ejdsip 447 2 ow Aq poyolar sey FIVA OW
28. 45 Dip SWIECHES a nn an ann ae cn nn oo na idee 45 MVC AA WIRING DIAGRAM 5 ico eae u Dec cer enano uaa Dee jn x E SR nement en Ex nk REO BASAL attestent nanas 46 MVC8 AB DVC8 A AA WIRING DIAGRAM ee eene nnn nennen nnn nennen nnn 47 SAFETY PRECAUTIONS Adhere to the following warnings and cautions when install ing adjusting altering servicing or operating the furnace To ensure proper installation and operation thoroughly read this manual for specifics pertaining to the installation and application of this product DANGER PELIGRO varie TO PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPER INSTALLATION ADJUSTMENT ALTERATION SERVICE OR MAINTENANCE REFER TO THIS MANUAL FOR ADDITIONAL ASSISTANCE OR INFORMATION CONSULT QUALIFIED INSTALLER SERVICER AGENCY OR THE GAS SUPPLIER varie IF THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED EXACTLY A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE PERSONAL INJURY OR LOSS OF LIFE DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE WHAT TO DO IF YOU SMELL GAS DO NOT TRY TO LIGHT ANY APPLIANCE DO NOT TOUCH ANY ELECTRICAL SWITCH DO NOT USE ANY PHONE IN YOUR BUILDING MMEDIATELY CALL YOUR GAS SUPPLIER FROM A NEIGHBOR S PHONE FOLLOW THE GAS SUPPLIER S INSTRUCTIONS F YOU CANNOT REACH YOUR GAS SUPPLIER CAL
29. INPUTS 0140 00606 Wiring is subject to change Always refer to the wiring diagram on the unit for the most up to date wiring 46 FIELD GND FIELD SPLICE SWITCH IGNITER SWITCH PRESS OVERCURRENT PROT DEVICE MVCS8_AB DVC8_AA Wirinc DIAGRAM TO 115 VAC 1 60 HZ ID BLOWER TWO STAGE PRESSURE SWITCH ASSEMBLY 9 PROTECTION DEVICE 8 WARNING DISCONNECT j 7o 2AVHUM HIGH FIRE 8 POWER BEFORE HOT LOW 7 YL PRESSURE X SERVICING WIRING SURFACE PRESSURE SWITCH TO UNIT MUST BE IGNITER SWITCH 1 D gt DISCONNECT PROPERLY POLARIZED 2 CIRCUIT 1 AND GROUNDED CONNECTOR m 115 1 60 HZ POWER SUPPLY WITH Hi 2 WH OVERCURRENT PROTECTION DEVICE a TWO STAGE BL FLAME WARNING 2 GAS VALVE SENSOR DISCONNECT POWER HONEY WELL BEFORE SERVICING WIRING TO UNIT MUST BE PROPERLY POLARIZED AND GROUNDED DISCONNECT MANUAL RESET ROLLOUT LIMIT 1 CONTROLS I PU PU RD EA DOOR 9 5 SWITCH AUTO RESET PRIMARY Q JUNCTION BOX x LIMIT CONTROL INDUCTOR COIL E gt PU 7OKBTU 20kBTU gt lt 5 115 MODELS 5 INDUCED ONLY INDOOR o0 WH DRAFT T AIR BLOWER CIRCULATOR BK
30. OR THE GAS SUPPLIER A WARNING THIS UNIT MUST NOT BE USED AS A CONSTRUCTION HEATER DURING THE FINISHING PHASES OF CONSTRUCTION ON A NEW STRUCTURE THIS TYPE OF USE MAY RESULT IN PREMATURE FAILURE OF THE UNIT DUE TO EXTREMELY LOW RETURN AIR TEMPERATURES AND EXPOSURE TO CORROSIVE OR VERY DIRTY ATMOSPHERES WARNING TO PREVENT PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION THIS FURNACE MUST BE CATEGORY VENTED DO NOT VENT USING CATEGORY III VENTING PROVISIONS MUST BE MADE FOR VENTING COMBUSTION PRODUCTS OUTDOORS THROUGH A PROPER VENTING SYSTEM THE LENGTH OF FLUE PIPE COULD BE A LIMITING FACTOR IN LOCATING THE FURNACE ADDITIONAL SAFETY CONSIDERATIONS This furnace is approved for Category Venting only Provisions must be made for venting combustion products outdoors through a proper venting system The length of flue pipe could be a limiting factor in locating the furnace e e SHIPPING INSPECTION All units are securely packed in shipping containers tested according to International Safe Transit Association specifica tions The carton must be checked upon arrival for external damage If damage is found a request for inspection by carrier s agent must be made in writing immediately The furnace must be carefully inspected on arrival for damage and bolts or screws which may have come loose in transit In the event of damage the consignee should 1 Make anotation on delivery receipt of any visible damage t
31. Selects the airflow trim amount for the non CT compatible single stage AC unit Cool Airflow Profile CL PRFL A B C or D default is A Selects the airflow profile for the non CT D Cool ON Delay CL ON 5 10 20 or 30 seconds default is Selects the indoor blower ON delay for the NO rence Cool OFF Delay CL OFF 30 60 90 or 120 seconds default Selects the indoor blower OFF delay for the Em NETWORK TROUBLESHOOTING Communications is achieved by taking the difference between two dc signals The signals and transmission lines are referred to as data 1 and data 2 Each transmission line is biased to approximately 2 5Vdc During data recep tion transmission the data lines vary between 5V and ground When data 1 is increasing towards 5V data 2 is decreasing towards ground and when data 1 is decreasing towards ground data 2 is increasing towards 5V Typically the data 1 line is approximately 2 6Vdc and the data 2 transmission line is approximately 2 3Vdc The voltage difference between data 1 and data 2 is typically 0 2 to 0 6 The indoor control is equipped with a bank of three dipswitches that provide biasing and termination functions for the communications transmission lines The outdoor control in the CT compatible unit is equipped with a bank of two dipswitches that provide termination functions for the com munications transmission lines Communications errors
32. Suum 1950 981 egessoui ooeumnq 991 5110105 383500194 wrONWOFUIOD UOOT 1 9 10 303800290 epoo 10119 pres ejdsip o 440 uin SuIsn 105 gyep pareys Aue Urejuoo jou 0 LAN ON HIOMJOU 124 JOU e uP 0j s rej ooeumq OBRSSOU IMUNA YOIYO 5110105 JLISOULION BULIIM 1991109 pue JOMO UOOT Aressooou 18 1004 10 1189 9 Jl 1 10119 medar Ayuejod 3991109 SI 10 ALTd 51 7 ejdsip jorjuos 0 Jord 440 Jomod JULM MOIAOY 03 Jomod jy SI I JO VA OV SIT JO e 0j s rej ooeumnq 00290000 JULM 3091109 10 0981 10 quiod jos yams ounssoud 3991109 K1essooou po1oouuoo 10 95007 SB 1994109
33. The circulator blower will remain on high heating speed for thirty 30 seconds before switching to the low heat circulating speed R and W1 or R and W1 W2 thermostat contacts open completing the call for heat Gas valve closes extinguishing flame Induced draft blower is de energized following a fifteen second post purge Humidifier terminals are de energized Circulator blower continues running for the selected heat off delay period 90 120 150 or 180 seconds The speed run during this period depends on the last heat call provided by the thermostat If the last call for heat was a call for low heat the air circulator motor will run on low heat speed for the duration of the heat off delay period 90 120 150 or 180 seconds If the last call for heat was a call for high heat the air circulating motor will run on the high heating speed for thirty 30 seconds and then switch to the low heating speed for the balance of the heat off delay period 60 90 120 or 150 seconds Circulator blower and electronic air cleaner terminal is de energized Circulator blower ramps down to OFF during the 30 seconds following the heat off delay period Furnace awaits next call from thermostat The normal operational sequence in cooling mode is as fol lows e Rand Y1 G or Y2 G thermostat contacts close initiating a Call for cool e Integrated control module performs safety circuit checks Outdoor fan and co
34. Tile Size 8 x 8 x12 Each x 24 Length Attic Floor 1 2 to 1 Air Space Second Floor First Floor Water Heater Vent Connector Vent Connector Natural Draft Water Heater Fan Assisted Forced Air Fumace Clean Out Basement Floor Typical Multiple Flue Clay Tile Chimney CHECKLIST SUMMARY This checklist serves as a summary of the items to be checked before venting an 80 furnace into a masonry chimney In addi tion we recommend that a qualified serviceman use this check list to perform a yearly inspection of the furnace venting sys tem This checklist is only a summary For detailed information on each of the procedures mentioned see the paragraph refer enced with each item This inspection is based upon a draft topical report Masonry Chimney Inspection and Relining issued by the Gas Research Institute While not yet finalized we believe this report repre sents the best information on this subject which is currently available 11 EXTERIOR MASONRY CHIMNEYS CATEGORY FURNACES ONLY Proper Chimney Line terminate with Termination No listed vent cap Check 1 Fix 1 Yes Chimney channel free of solid and Cha
35. UPFLOW INSTALLATIONS For these models use only the instructions for downflow installation only A WARNING TO PREVENT POSSIBLE EQUIPMENT DAMAGE PROPERTY DAMAGE PERSONAL INJURY OR DEATH THE FOLLOWING BULLET POINTS MUST BE OBSERVED WHEN INSTALLING THIS UNIT Follow the instructions listed below when selecting a furnace location Refer also to the guidelines provided in Section V Combustion and Ventilation Air Requirements Centrally locate the furnace with respect to the proposed or existing air distribution system Ensure the temperature of the return air entering the furnace is between 55 F and 100 F when the furnace is heating e Provisions must be made for venting combustion products outdoors through a proper venting system The length of flue pipe could be a limiting factor in locating the furnace Ensure adequate combustion air is available for the furnace Improper or insufficient combustion air can expose building occupants to gas combustion products that could include carbon monoxide Refer to Combustion and Ventilation Air Requirements section furnace must be level If the furnace is to be set on a floor that may become wet or damp at times the furnace should be supported above the floor on a concrete base sized approximately 1 1 2 larger than the base of the furnace Ensure upflow or horizontal furnaces are not installed directly on carpeting or any other combustible material The only
36. are only certified to 4500 feet Contact the distributor for a tabular listing of appropriate manufacturer s kits for propane gas and or high altitude instal lations The indicated kits must be used to insure safe and proper furnace operation All conversions must be performed by a qualified installer or service agency PROPANE Gas CONVERSION warnine POSSIBLE PROPERTY DAMAGE PERSONAL INJURY OR DEATH MAY OCCUR IF THE CORRECT CONVERSION KITS ARE NOT INSTALLED THE APPROPRIATE KITS MUST BE APPLIED TO ENSURE SAFE AND PROPER FURNACE OPERATION ALL CONVERSIONS MUST BE PERFORMED BY A QUALIFIED INSTALLER OR SERVICE AGENCY This unit is configured for natural gas The appropriate manufacturer s propane gas conversion kit must be applied for propane gas installations Refer to the Propane Gas and or High Altitude Installations section for details Contact your distributor for a tabular listing of appropriate manufacturer s kits for propane gas and or high altitude instal lations The indicated kits must be used to insure safe and proper furnace operation All conversions must be performed by a qualified installer or service agency CIRCULATING AIR AND FILTERS Gas PiPING CONNECTIONS varie TO AVOID POSSIBLE UNSATISFACTORY OPERATION OF EQUIPMENT DAMAGE DUE TO UNDERFIRING OR EQUIPMENT USE THE PROPER SIZE OF NATURAL PROPANE GAS PIPING NEEDED WHEN RUNNING PIPE FROM THE METER TANK TO THE FURNACE When si
37. come into direct contact with the chimney walls or tile liner If it is not it can probably be rehung so as to be acceptable A thimble or fire stop may be helpful here Flexible liners should be hung straight or nearly straight If it is spiraled in the chimney and in good condition it should be rehung To do this break the top seal pull up and cut off the excess liner length and refit the top seal Use caution when doing this as the cut edges of flexible liners may be sharp The surfaces of the liner must be physically sound If gaps or holes are present the metal liner must be removed and re placed Fix 4 Finally confirm that the metal liner is the cor rect size for the appliances to be installed Use the GAMA tables and rules If a metal liner is not present a clay tile liner must be present or the chimney must be lined Fix 4 Use a flashlight and small mirror at the cleanout or vent con nector to inspect the clay tile liner If any ofthe following prob lems are present Tile sections misaligned Tile sections missing Gaps between tile sections Signs of condensate drainage at the cleanout or vent connectors Mortar protruding from between tile sections Use of sewer pipe or drainage pipe rather than an approved fire clay tile reline the chimney Fix 4 Next measure the size of the liner It may be possible to do this from the cleanout The liner must be at least as large as the minimum size e
38. connector is provided with the control to make thermostat wire connections This plug may be removed wire connections made to the plug and replaced It is strongly recommended that multiple wires into a single terminal be twisted together prior to inserting into the plug connector Failure to do so may result in intermittent operation Typical 18 AWG thermostat wire may be used to wire the sys tem components One hundred 100 feet is the maximum length of wire between indoor unit and outdoor unit or between indoor unit and thermostat Wire runs over 100 feet require larger gauge wire Four WirE INDOOR AND WIRING Typical ComfortNet wiring will consist of four wires between the indoor unit and outdoor unit and between the indoor unit and thermostat The required wires are a data lines 1 and 2 b thermostat R 24 hot and 24 common CTKO1AA 1 2 R Thermostat CT Compatible Furnace Integrated Control Module CT Compatible AC HP Integrated Control Module System Wiring using Four Wires Two Wire Four WIRE INDOOR WIRING Two wires can be utilized between the indoor and outdoor units For this wiring scheme only the data lines 1 and 2 are needed required between the indoor and outdoor units A 40VA 208 230 VAC to 24VAC transformer must be installed in the out door unit to provide 24VAC power to the outdoor unit s elec tronic control The tra
39. dehumidistat or through a thermostat s DEHUM terminal if available This lower blower speed enhances dehumidification of the conditioned air as it passes through the AC coil For proper function a dehu midistat applied to this furnace must operate on 24 VAC and utilize a switch which opens on humidity rise Refer to the Thermostat Wiring Diagrams figure for additional wir ing details To install connect a dehumidistat 1 Turn OFF power to furnace 2 Secure the dehumidistat neutral wire typically the white lead to the terminal marked on the furnace integrated control module 3 Secure the dehumidistat hot wire typically the black lead to the terminal marked R on the furnace integrated control module 4 Secure the dehumidistat ground wire typically the green lead to the ground screw on the furnace junction box NOTE Ground wire may not be present on all dehumidistats 5 ON power to furnace To enable the dehumidify function on the integrated control module set the dehumidification ENABLE dipswitch from OFF to ON Once the switch is set the dehumidify function is enabled during a combination call for cooling T Stat and dehumidi fication DEHUM Stat OFF ON 9 co Move to the ON position 10 Unused to enable dehumidification 5 FossiL FUEL APPLICATIONS This furnace can be used in conjunction with a heat pump in a fossil fuel appli
40. gas valve The drip leg must be a minimum of three inches long Install a 1 8 NPT pipe plug fitting accessible for test gage connection immediately upstream of the gas supply connection to the furnace Use two pipe wrenches when making connection to the gas valve to keep it from turning The orientation of the gas valve on the manifold must be maintained as shipped from the factory 19 Gas SUPPLY AND PIPING Install a manual shutoff valve between the gas meter and unit within six feet of the unit If a union is installed the union must be downstream of the manual shutoff valve between the shutoff valve and the furnace e Tighten all joints securely Connect the furnace to the building piping by one of the following methods Rigid metallic pipe and fittings Semi rigid metallic tubing and metallic fittings Aluminum alloy tubing must not be used in exterior locations Uselisted gas appliance connectors in accordance with their instructions Connectors must be fully in the same room as the furnace Protect connectors and semi rigid tubing against physical and thermal damage when installed Ensure aluminum alloy tubing and connectors are coated to protect against external corrosion when in contact with masonry plaster or insulation or subjected to repeated wetting by liquids such as water except rain water detergents or sewage Location of Manual Valve I 1 Installed Ahead of
41. i GND 20 BURNER COMPARTMENT SND LINE NEUTRAL J EAC lt lt BLOWER COMPARTMENT PU 5 1 FLEDTRONIE NEUTRAL 5 AUTO RESET AUXILIARY 2 Q lt lt LIMIT CONTROL m INO 5 5 x 5 1 5 o gt a 24 THERMOSTAT CONNECTIONS FUSE IND LO 9 2 5 Zu w NEUTRAL 2 202 24V lt HUMIDIFIER 5 sue IGN NEUTRAL 5 I a 5 E HOT SURFACE ow IGNITER Fs ery 2 m 2ND src DLY RD L FLAME SENSOR 2a 5818 Esm 1 LINE 115 VAC NEUTRAL 9 9496 TO Heat OFF 184 Rage lt ER g TRANSFORMER gt 2 EODEHUM Onvac 9 lt a AUTO RESET AUXILIARY LIMIT LIMIT CONTROL na 5 z m HEAT CONTROLS ERES ee 4 t lt lt y E On 1 93 5 LOW FIRE PRESS 20200 78 d SWITCH m 24V HUM a gt Za a 5 1 I9rto OR 4 LINE 0 05 2 40 VA 1 Toss Bk TRANSFORMER 9 o S FS 8 1 PRESS SWTICH MANUAL RESET ROLLOUT i 8 8 LIMIT CONTROLS E NEUTRAL 5 HU 1 N 8 c MTR WH lt HARNESS WH BK BK BK WH gh nja
42. least 12 inches below the lower edge of the lowest chimney inlet opening Achimney without a cleanout could become partially blocked by debris If no cleanout is present the chimney must be re lined Fix 4 Remove the cleanout cover and examine the cleanout for debris If significant amounts of any of the following are found e Fueloil residue Bricks Mortar or sand Pieces of the tile liner e Rusted pieces of the metallic liner reline the chimney Fix 4 5 LINER CONDITION If a metal liner is present it must be checked It cannot be assumed that all existing metal liners are correctly installed and in good condition Remove the lowest existing vent connector and examine the inside of the elbow or tee the base of the liner A small amount of soot may be considered acceptable provided the installer vacuums it away If rusted pieces of the liner have collected here the metal liner must be removed and replaced Fix 4 Next gently tap the inside of the liner with a Phillips screw driver If the screwdriver perforates the liner or if the tapping does not sound like metal hitting metal the liner must be re moved and replaced Fix 4 Remember that all appliances must be vented inside the liner Venting one appliance inside the liner and another appliance outside the liner is not acceptable Next use a flashlight and small mirror to sight up the liner B vent must be supported so as to not
43. non installed ungrounded furnaces 1 Disconnect all power to the furnace Do not touch the integrated control module or any wire connected to the control prior to discharging your body s electrostatic charge to ground Firmly touch a clean unpainted metal surface of the furnaces near the control Any tools held ina person s hand during grounding will be discharged Service integrated control module or connecting wiring following the discharge process in step 2 Use caution not to recharge your body with static electricity 1 do not move or shuffle your feet do not touch ungrounded objects etc If you come in contact with an ungrounded object repeat step 2 before touching control or wires Discharge your body to ground before removing a new control from its container Follow steps 1 through 3 if installing the control on a furnace Return any old or new controls to their containers before touching any ungrounded object To THE INSTALLER Before installing this unit please read this manual thoroughly to familiarize yourself with specific items which must be ad hered to including but not limited to unit maximum external static pressure gas pressures BTU input rating proper elec trical connections circulating air temperature rise minimum or maximum CFM and motor speed connections and venting These furnaces are designed for Category venting only IMPORTANT NOTE TO THE OWNER REGARDING PRODUCT WARRANTY Compl
44. return and supply ducts as close to the furnace as possible Thermometers must not be influenced by radiant heat by being able to see the heat exchanger 3 Subtract the return air temperature from the supply air temperature to determine the air temperature rise Allow adequate time for thermometer readings to stabilize 4 Adjust temperature rise by adjusting the circulator blower speed Increase blower speed to reduce temperature rise Decrease blower speed to increase temperature rise Refer to Startup Procedure and Adjustment Circulator Blower Speeds for speed changing details HEAT EXCHANGER RADIATION LINE OF SIGHT SUPPLY gt AIR RISE Tsuppty TRETURN i TRETURN lt AIR Temperature Rise Measurement CIRCULATOR BLOWER SPEEDS d WARNING TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK TURN OFF POWER TO THE FURNACE BEFORE CHANGING SPEED TAPS This furnace is equipped with a multi speed circulator blower This blower provides ease in adjusting blower speeds The Specification Sheet applicable to your model provides an air flow table showing the relationship between airflow CFM and external static pressure 5 for the proper selection of heating and cooling speeds The heating blower speed is shipped set at and the cooling blower speed is set at These blower speeds should be adjusted by the installer to match the install
45. sense signal If the flame sense signal drops too low the furnace will not sense flame and will lock out The flame sensor should be carefully cleaned by a qualified servicer using emery cloth or steel wool Following cleaning the flame sense signal should be as indi cated in the Specifications Sheet FLUE PASSAGES QUALIFIED SERVICER ONLY The heat exchanger flue passageways should be inspected at the beginning of each heating season If necessary clean the passageways as outlined below 1 Turn OFF the electrical power and gas supply to the furnace 2 Disconnect the gas line and remove the burner manifold assembly by removing the screws securing the assembly to the partition panel 3 Disconnect the flue pipe system from the induced draft blower 4 Remove the induced draft blower and collector box cover 5 Clean the primary heat exchanger tubes using a wire brush attached to a length of high grade stainless steel cable such as drain cleanout cable Attach a variable speed reversible drill to the other end of the cable Slowly rotate the cable with the drill and insert it into one of the heat exchanger tubes While reversing the drill work the cable in and out several times to obtain sufficient cleaning Repeat for each tube 6 Clean residue from furnace using a vacuum cleaner 7 Replace the parts removed in the previous steps in reverse order 8 electrical power and gas to furnace Check for leaks and proper
46. that there is no blockage or restriction leakage corrosion and other deficiencies which could cause an unsafe condition In so far as practical close all building doors and windows and all doors between the space in which the appliance s connected to the venting system are located and other spaces of the building Turn on clothes dryers and any appliance not connected to the venting system Turn on any exhaust fans such as range hoods and bathroom exhausts so they shall operate at maximum speed Do not operate a summer exhaust fan Close fireplace dampers d Follow the lighting instructions Place the appliance being inspected in operation Adjust thermostat so appliance shall operate continuously Test for draft hood equipped appliance spillage at the draft hood relief opening after 5 minutes of main burner operation Use the flame of a match or candle f After it has been determined that each appliance connected to the venting system properly vents when tested as outlined above return doors windows exhaust fans fireplace dampers and any other gas burning appliance to their previous conditions of use 9 venting is observed during any of the above tests the common venting system must be corrected Corrections must be in accordance with the latest edition of the National Fuel Gas Code NFPA 54 ANSI 7223 1 and or CAN CSA B149 Installation Codes If resizing is required on any portion of the venting
47. to the outdoors on one or more sides below the roof line The ability to use a clay lined masonry chimney depends on a parameter not associated with interior chimneys This variable is the geographic location of the installation Re searchers have discovered that the winter design temperatures have a direct impact on the suitability of this type of venting In most situations the existing masonry chimneys will require a properly sized metallic liner Ay WARNING POSSIBILITY OF PROPERTY DAMAGE PERSONAL INJURY OR DEATH DAMAGING CONDENSATION CAN OCCUR INSIDE MASONRY CHIMNEYS WHEN A SINGLE FAN ASSISTED CATEGORY APPLIANCE 80 AFUE FURNACE IS VENTED WITHOUT ADEQUATE DILUTION AIR DO NOT CONNECT AN 80 FURNACE TO A MASONRY CHIMNEY UNLESS THE FURNACE IS COMMON VENTED WITH A DRAFT HOOD EQUIPPED APPLIANCE OR THE CHIMNEY IS LINED WITH A METAL LINER OR TYPE B METAL VENT ALL INSTALLATIONS USING MASONRY CHIMNEYS MUST BE SIZED IN ACCORDANCE WITH THE APPROPRIATE VENTING TABLES IF AN 80 FURNACE IS COMMON VENTED WITH A DRAFT HOOD EQUIPPED APPLIANCE THE POTENTIAL FOR CONDENSATION DAMAGE MAY STILL EXIST WITH EXTREMELY COLD CONDITIONS LONG VENT CONNECTORS EXTERIOR CHIMNEYS OR ANY COMBINATION OF THESE CONDITIONS THE RISK OF CONDENSATION DAMAGE IS BEST AVOIDED BY USING MASONRY CHIMNEY AS A PATHWAY FOR PROPERLY SIZED METAL LINER OR METAL VENT Crown Roof Line Clay Tile Size Generally 12 x 12 24 Length Clay
48. unit operation 38 9 Severe heat exchanger fouling is an indication of an operational problem Perform the checks listed in Startup Procedure and Adjustments to reduce the chances of repeated fouling BEFORE LEAVING AN INSTALLATION Cycle the furnace with the thermostat at least three times Verify cooling and fan only operation Review the Owner s Manual with the homeowner and discuss proper furnace operation and maintenance Leave literature packet near furnace REPAIR AND REPLACEMENT PARTS When ordering any of the listed functional parts be sure to provide the furnace model manufacturing and serial numbers with the order Although only functional parts are shown in the parts list all sheet metal parts doors etc may be ordered by description Parts are available from your distributor Functional Parts List Gas Valve Blower Motor Gas Manifold Blower Wheel Natural Gas Orifice Blower Mounting Bracket Propane Gas Orifice Blower Cutoff Igniter Blower Housing Flame Sensor Inductor Rollout Limit Switch Heat Exchanger Primary Limit Switch Pressure Switch Induced Draft Blower Door Switch Auxiliary Limit Switch Integrated Control Module Transformer TROUBLESHOOTING CHART ed 3ueuroov do1 3991109 yep ooepdos ued 490 1109 YM 55 ed r uonoouuoo JULM 3991100 10 81 1280
49. 09 10 jurod 195 5 921155924 129210 K1essooou S 12910 Kressooou Se 129109 Ulojs S WIP JOJO uoneurutoj pue 80 1240414 oSexoo q 107 Surdid jour 10 pue yoodsuy K1essooou 8 payoouuos 10 95007 sjotjuoo YouIMs Suruonoung eur 10 jurod jos joo1100uT poonpur 10 Ulojs s poxoo q edid oqur 10 pue pexoo q payoouuos 10 peso o JOU SI YAMS 1 YOOYO 10205 363500290 7 UOT INAS 10 2818001790 pwrIONWOFUIOD 10119 23 ou 0 440 Jomod soy yams 5 yoodsuy esoq YOJIMS ounsso1q 24 911550214 oSejs MOT suni poonpuy 5110105 UOT 9211196 juourooe do1 1991109 YM 10 D 38350041941 Yous 211155914 ooe dow SULIIM poys
50. 5 Turn ON the gas supply 6 Turn on power and close thermostat R and W1 contacts to provide a call for low stage heat 7 Measure the gas manifold pressure with burners firing Adjust manifold pressure using the Manifold Gas Pressure table shown below 8 Remove regulator cover screw from the low LO outlet pressure regulator adjust tower and turn screw clockwise to increase pressure or counterclockwise to decrease pressure Replace regulator cover screw 9 Close thermostat R and W2 contacts to provide a call for high stage heat 10 Remove regulator cover screw from the high HI outlet pressure regulator adjust tower and turn screw clockwise to increase pressure or counterclockwise to decrease pressure Replace regulator cover screw 11 Turn off all electrical power and gas supply to the system 12 Remove the manometer hose from the hose barb fitting or outlet pressure boss 13 Replace outlet pressure tap a Honeywell VR9205 valve Remove the 1 8 NPT hose barb fitting from the outlet pressure tap Replace the outlet pressure boss plug and seal with a high quality thread sealer b White Rodgers 36G54 valve Turn outlet pressure test screw to seal pressure port clockwise 7 in lb minimum 14 Turn on electrical power and gas supply to the system 15 Close thermostat contacts and W1 W2 to energize the valve Using a leak detection solution or soap suds check for leaks at outlet pressure boss pl
51. 900 1 220 1 900 770 1 700 1 00 1 800 720 1 500 Sizing Between Second Stage and Appliance Regulator Maximum Propane Capacities listed are based on 2 psig pressure drop at 10 psig setting Capacities in 1 000 BTU hour Pipe or Tubing Length Feet Nominal Pipe Size Tubing Size O D Type L Schedule 40 1 1 4 2 205 1 496 1 212 1 039 91 834 724 630 567 511 439 390 1 1 2 3 307 2 299 1 858 1 559 1 417 1 275 1 066 976 866 787 665 590 1 071 732 590 504 448 409 346 307 275 252 209 185 21 50 107 181 277 500 152 315 131 198 121 187 104 155 CIRCULATING AIR AND FILTERS A WARNING NEVER ALLOW THE PRODUCTS OF COMBUSTION INCLUDING CARBON MONOXIDE TO ENTER THE RETURN DUCT WORK OR CIRCULATION AIR SUPPLY Duct systems and register sizes must be properly designed for the CFM and external static pressure rating of the furnace Ductwork should be designed in accordance with the recom mended methods of Air Conditioning Contractors of America Manual D Aduct system must be installed in accordance with Standards of the National Board of Fire Underwriters for the Installation of Air Conditioning Warm Air Heating and Ventilating Systems Pamphlets No 90A and 90B START UP PROCEDURE AND ADJUSTMENT A closed return duct system must be used with the return duct connected to the furnace NOTE Ductwork must never
52. Combustion ventilation air supply pipes must terminate 12 from top of closet and 12 from floor of closet DO NOT remove solid base plate for side return e Return air ducts must be completely sealed to the furnace and terminate outside the enclosure surfaces CLEARANCES AND ACCESSIBILITY Unobstructed front clearance of 24 for servicing is recom mended SIDES FRONT BACK Pe clearance for horizontal configuration 1 HORIZONTAL INSTALLATION ONLY Line contact to framing is permitted when installed in the hori zontal configuration Line contact is defined as the portion of the cabinet that is formed by the intersection of the top and side ACCESSIBILITY CLEARANCE WHERE GREATER SHOULD TAKE PRECEDENCE OVER MINIMUM FIRE PRO TECTION CLEARANCE Agas fired furnace for installation in a residential garage must be installed so that the ignition source and burners are located not less than eighteen inches 18 above the floor and is protected or located to prevent physical damage by vehicles A gas furnace must not be installed di rectly on carpeting tile or other combustible materials other than wood flooring FURNACE SUSPENSION If suspending the furnace from rafters or joist use 3 8 threaded rod and 2 x2 x3 8 angle iron as shown below The length of rod will depend on the application and the clearances neces sary CO
53. D MEMORY CARD DATA b 0 BLOWER MOTOR NOT RUNNING b BLOWER COMMUNICATION ERROR 5 BLOWER HP MIS MATCH b BLOWER MOTOR OPERATING IN POWER TEMPERATURE OR SPEED LIMIT p BLOWER MOTOR CURRENT TRIP OR LOST ROTOR 5 BLOWER MOTOR LOCKED ROTOR b 6 OVER UNDER VOLTAGE TRIP OR OVER TEMPERATURE TRIP b INCOMPLETE PARAMETERS SENT TO MOTOR b p LOW INDOOR AIRFLOW LOW STAGE COOL HIGH STAGE COOL 0 Low stace HEAT L stace continuous 100 ALTERNATES WITH C 2 AO O 44 AIR Flow DATA Speed Selection Dip Switches Profile Heat Selection Selection Selection Selection Switches Switches Switches Switches rel Profiles OFF Delay ELLE pe m eem eee CT fn fon s one p sem set airflow 1 Select model and desired high stage cooling airflow Determine the corresponding tap UA B C or DI Set dip switches and 2 to the appropriate ON OFF positions 2 Select model and desired high stage heating airflow Determine the corresponding tap B or D 1 Set dip switches 7 and 8 to the appropriate ON OFF positions 3 Select the airflow adjustment factor taps A and D are Tap B is 10 10 Set dip switches 3 and 4 to the appropriate ON OFF positions To set Comfort Mode Select desired Comfort Mode profile see profiles abovel Set switches 5 and 6 to the appropriate ON OFF positions Cool Adjust
54. INSTALLATION INSTRUCTIONS FOR 0 M VC8 Gas FURNACE CATEGORY Installer Affix all manuals adjacent to the unit These furnaces comply with requirements em bodied in the American National Standard Na tional Standard of Canada ANSI 221 47 2 3 Gas Fired Central Furnaces Liste A RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION ATTENTION INSTALLING PERSONNEL As a professional installer you have an obligation to know the product better than the customer This includes all safety precautions and related items Prior to actual installation thoroughly familiarize yourself with this Instruction Manual Pay special attention to all safety warnings Often during installation or repair it is possible to place yourself in a position which is more hazardous than when the unit is in operation Remember it is your responsibility to install the product safely and to know it well enough to be able to instruct a customer in its safe use Safety is a matter of common sense a matter of thinking before acting Most dealers have a list of specific good safety practices follow them The precautions listed in this Installation Manual are intended as supplemental to existing practices However if there is a direct conflict between existing practices and the content of this manual the precautions listed here take precedence NOTE Please contact your distributor or our website for the applicab
55. L THE FIRE DEPARTMENT INSTALLATION AND SERVICE MUST BE PERFORMED BY A QUALIFIED INSTALLER SERVICE AGENCY OR THE GAS SUPPLIER w RNiNG THIS PRODUCT CONTAINS OR PRODUCES A CHEMICAL OR CHEMICALS WHICH MAY CAUSE SERIOUS ILLNESS OR DEATH AND WHICH ARE KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM warnine HEATING UNIT SHOULD NOT BE UTILIZED WITHOUT REASONABLE ROUTINE INSPECTION MAINTENANCE AND SUPERVISION IF THE BUILDING IN WHICH ANY SUCH DEVICE IS LOCATED WILL BE VACANT CARE SHOULD BE TAKEN THAT SUCH DEVICE IS ROUTINELY INSPECTED MAINTAINED AND MONITORED IN THE EVENT THAT THE BUILDING MAYBE EXPOSED TO FREEZING TEMPERATURES AND WILL BE VACANT ALL WATER BEARING PIPES SHOULD BE DRAINED THE BUILDING SHOULD BE PROPERLY WINTERIZED AND THE WATER SOURCE CLOSED IN THE EVENT THAT THE BUILDING MAY BE EXPOSED TO FREEZING TEMPERATURES AND WILL BE VACANT ANY HYDRONIC COIL UNITS SHOULD BE DRAINED AS WELL AND IN SUCH CASE ALTERNATIVE HEAT SOURCES SHOULD BE UTILIZED varie TO PREVENT POSSIBLE PROPERTY DAMAGE PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK THE FURNACE MUST BE LOCATED TO PROTECT THE ELECTRICAL COMPONENTS FROM WATER CARBON MONOXIDE POISONING HAZARD Special Warning for Installation of Furnace or Air Handling Units in Enclosed Areas such as Garages Utility Rooms or Parking Areas Carbon monoxide producing devices such as an automobile space heater gas w
56. LECTRICAL POWER BEFORE PERFORMING ANY SERVICE OR MAINTENANCE 4 Refer to the Troubleshooting Chart at the end of this manual for assistance in determining the source of unit operational prob lems The dual 7 segment LED display will display an error code that may contain a letter and number The error code may be used to assist in troubleshooting the unit 36 RECALL The ignition control is equipped with a momentary push button switch that can be used to display the last six faults on the dual 7 segment LED s The control must be in Standby Mode no thermostat inputs to use the feature Depress the switch for approximately 2 seconds Release the switch when the LED s are turned off The last six faults will be displayed most recent to least recent on the dual 7 segment LED s NOTE Consecutively repeated faults are stored maximum of three times Example A clogged return air filter causes the furnace limit to trip repeatedly The control will only store this fault the first three consecutive times the fault occurs RESETTING FRom Lockout Furnace lockout results when a furnace is unable to achieve ignition after three attempts during a single call for heat It is characterized by a non functioning furnace and EB code dis played on the dual 7 segment display If the furnace is in lock out it will or can be reset in any of the following ways 1 Automatic reset The integrated control module wil
57. MBUSTION amp VENTILATION CATEGORY I VENTING AIR REQUIREMENTS PROVIDE 8 MINMUM CLEARANCE BETWEEN CENTER ROD AND FURNACE CABINET TO ALLOW FOR CIRCULATOR BLOWER REMOVAL ASSURE FURNACE IS LEVEL FROM END TO END AND HAS A SLIGHT FORWARD TILT WITH THE FRONT OF THE FURNACE 0 3 4 BELOW THE BACK OF THE FURNACE 3 8 DIAMETER THREADED ROD 6 PLACES NUTS SUPPORT NUTS 2 x 2 x 3 8 ANGLE IRON 3 PLACES POSITION AS CLOSE AS POSSIBLE TO BLOWER DECK TO ALLOW FOR CIRCULATOR BLOWER REMOVAL TILT OUTWARD TO ALLOW FOR DOOR AND CIRCULATOR BLOWER REMOVAL Suspended Furnace EXISTING FURNACE REMOVAL NOTE When an existing furnace is removed from a venting system serving other appliances the venting system may be too large to properly vent the remaining attached appliances The following vent testing procedure is reproduced from the American National Standard National Standard of Canada for Gas Fired Central Furnaces ANSI Z21 47 Latest Edi tion CSA 2 3 Latest Edition Section 1 23 1 The following steps shall be followed with each appliance connected to the venting system placed in operation while any other appliances connected to the venting system are not in operation a Seal unused openings in the venting system b Inspect the venting system for proper size and horizontal pitch as required by the National Fuel Gas Code ANSI 7223 1 or the CAN CSA 149 Installation Codes and these instructions Determine
58. RFACE IGNITER C 2 ciRcUIT 2 1 CONNECTOR LOW FIRE PRESSURE SWITCH 24V SWITCH H 5 GAS VALVE MANUAL RESET ROLLOUT LIMIT CONTROLS PU PU RD AUTO RESET PRIMARY LIMIT CONTROL PU INDUCED WH DRAFT RD BLOWER BK GND BURNER COMPARTMENT BLOWER COMPARTMENT AUTO RESET AUXILIARY LIMIT CONTROL DIAGNOSTIC LED S 95 2ND STG DLY 03 T STAT OS HEAT OFF 55 DELAY UNUSED DEHUM S1NGOW 701405 FOVLS OML EI HEAT HOLO3NNOO HOLON LINDUID m FS NEUTRAL YOLISNNOD S RD Sa HARNESS HIGH FIRE PRESSURE FLAME SENSOR SISSVHO TRANSFORMER BLOWER COMPARTMENT DOOR SWITCH OPEN WHEN DOOR OPEN CIRCULATOR BLOWER INDUCTOR COIL 70kBTU 90kBTU 115kBTU MODELS ONLY TO 115 VAC 19 60 HZ POWER SUPPLY WITH OVERCURRENT PROTECTION DEVICE WARNING DISCONNECT POWER BEFORE SERVICING WIRING TO UNIT MUST BE PROPERLY POLARIZED DIRGONNSCT AND GROUNDED TO 115 19 60 HZ POWER SUPPLY WITH OVERCURRENT PROTECTION DEVICE L GND N WARNING DISCONNECT POWER T BEFORE SERVICING WIRING TO UNIT MUST BE PROPERLY POLARIZED AND GROUNDED DISCONNECT DOOR SWITCH INDUCTOR COIL 7OKBTU 90KBTU 115kBTU MODELS ONLY LINE lt ELECTRONIC de AIR CLEANER
59. RS READ THIS SECTION BEFORE INSTALLING THE RETURN AIR DUCTWORK 4 nnns 22 UPRIGHT INSTALLATIONS sias xen Ru caida Dena d qudd atu mde RENI to taire 23 Table of Contents CIRCULATION AIR FICEERS siio nies si 23 HORIZONTAE INSTALLATIONS teaavactatseaasensses 23 START UP PROCEDURE AND ADJUSTMENT RR RR ARR RR REN R RR ERR RR DANN RR ARR 4 nnen nna 23 ANTICIPATOR SETTING ent aa un vici dias uiii QU Db dew EUREN OR nS E 23 FURNACE OPERATION 25 55 id ned Es Xu ERES EM R ED NES MERE DNA ARM CIIM I dela ca MEN S DE MM aan 23 Gas SUPPLY PRESSURE MEASUREMENT eene nennen nune nhan haus asus asas anas nnmnnn 23 Gas MANIFOLD PRESSURE MEASUREMENT AND ADJUSTMENT eee eene nennen 25 Gas INPUT RATE MEASUREMENT NATURAL Gas 25 TEMPERATURE Cia t 26 CIRCULATOR BEOWER SPEEDS iced iei cei c cro sugar pons oin oda col tn 26 BiowER HEAT OFF DELAY TIMINGS 28 CONFORIMET TM SYSTEM
60. SULIIM MOT 1104 JON esnquedo e 53 uone1edo ON YOOYO 10205 363500190 pp JONWOJWOD peyeurunjr uoor AJLA 10 38150011941 wrIONWOFWIOD 528 jo 528 8 MOIS epoo 10119 soprAoud JOAO Ke dsip Sui 105095 ANVTA uoneiodo ON A snonunuoo suni 01 440 mod um 10 105095 1045 1291107 95195 ur PUNOIS 11045 FH NddONdWI OU yum QUE e ha JOMOTG pue poonpuy uonoeuuoo JULM 3094109 10 UOJUS8LL Kjessooou jreow dew JOMOTG poonpur xou K1essooou se joe1ro pue 91891 eSexoo q 10 Surdid jour pue 42940 payoouuos 95007 s rejop Surdid 107 uonoos YIP poonpur 2 2njJ Iu24 998 Jodoud sowing 12945 10 odid 10 pue poods ressooou poxoo q sreumq 75990 5110108 Joje nouro pue J 1030 ooe do1 10 jno o1
61. TAT WIRING IMPORTANT NOTE WIRE ROUTING MUST NOT INTERFERE WITH CIRCULATOR BLOWER OPERATION FILTER REMOVAL OR ROUTINE MAINTENANCE A REMOVABLE PLUG CONNECTOR IS PROVIDED WITH THE CONTROL TO MAKE THERMOSTAT WIRE CONNECTIONS THIS PLUG MAY BE REMOVED WIRE CONNECTIONS MADE TO THE PLUG AND REPLACED IT IS STRONGLY RECOMMENDED THAT MULTIPLE WIRES INTO A SINGLE TERMINAL BE TWISTED TOGETHER PRIOR TO INSERTING INTO THE PLUG CONNECTOR FAILURE TO DO SO MAY RESULT IN INTERMITTENT OPERATION As a two stage non communicating furnace the furnace inte grated control module provides terminals for both W1 and W2 and Y1 and Y2 thermostat connections This allows the furnace to support the following system applications Two Stage Heating Only Two Stage Heating with Single Stage Cool ing and Two Stage Heating with Two Stage Cooling Refer to the following figures for proper connections to the integrated control module Low voltage connections can be made through either the right or left side panel Thermostat wiring entrance holes are located in the blower compartment The following figure shows con nections fora heat cool system This furnace is equipped with a 40 VA transformer to facilitate use with most cooling equipment Consult the wiring diagram located on the blower compartment door for further details of 115 Volt and 24 Volt wiring NOTE For single stage cooling applications a jumper must
62. YOY 5810195 3035001190 y 119 NTHOJUIO pre 9811 10301 10 JIO Op HeIS 03 SITEJ WOOT SNAS syed SIOLIO uonrpuoo 10 1185 183800190 1091100 vjep 996 195 1991100 10101 sey apodo epoo q 1 poendod st oyuoo SWVMVd soop ejdsip 0 Jord 440 Jomod JIO 14 YOLOW JOJOUI 9 eje1edo 2 2 uonipuoo 510125 183500790 NHOFUO pue 2524 1 oos JOAO 0 umop 51145 uoot IMAS aerd sovurny 10 118 193500190 uo ouea y somje1oduro juorquie YSTH uonipuoo opoo 10119 soprAo1d UM SI
63. ace MUST be installed in accordance with the latest edition of the ANSI 2223 1 booklet entitled National Fuel Gas Code 54 and the requirements or codes of the local utility or other authority having jurisdiction In Canada this furnace must be installed in accordance with the current CAN CGA B149 1 amp 2 Gas Installation Codes local plumbing or waste water codes and other applicable codes Additional helpful publications available from the NFPA are 90A Installation of Air Conditioning and Ventilating System and NFPA 90B Warm Air Heating and Air Conditioning System All venting shall be in accordance with PART 7 Venting of Equip ment of the National Fuel Gas Code ANSI 7223 1 or appli cable local building and or air conditioning codes These pub lications are available from National Fire Protection Association Inc Batterymarch Park Quincy MA 02269 NOTE Furnaces with NOx screens meet the California NOx emission standards and California seasonal efficiency stan dards ANNUAL inspections of the furnace and its vent system is strongly recommended LOCATION REQUIREMENTS AND CONSIDERATIONS Your unit model type determines which installation procedures must be used For MVC8 models you must follow instruc tions for Horizontal Left Horizontal Right or Upflow installa tions only These furnaces are not approved for Downflow in stallations Downflow models DVC8 ARE NOT APPROVED FOR HORI ZONTAL OR
64. adjustment factor taps A and D are B is 10 C 10 Set dip switches and 4 to the appropriate ON OFF positions To set Comfort Mode Select desired Comfort Mode profile MVC8II55CX see profiles above Set switches 5 and 6 to the appropriate ON OFF positions D NOTE Airflow data shown applies to legacy mode operation only For a fully communicating system please see the outdoor unit s installation instructions for cooling and pump heating airflow data See ComfortNet System Airflow Consideration section for details 28 SYSTEM OVERVIEW The ComfortNet system or CT system is a system that in cludes a ComfortNet compatible furnace and air conditioner or heat pump with a CTKO1AA thermostat A valid ComfortNet system could also be a compatible furnace CTK01AA thermo stat and non compatible single stage air conditioner Any other system configurations are considered invalid ComfortNet sys tems and must be connected as a traditional or legacy sys tem see Electrical Connections for wiring connections The table below compares the valid CT systems CT compatible CT compatible Full CT system Furnace Air Conditioner benefits and features CT compatible CT compatible Full CT system Furnace Heat Pump benefits and features Non CT compatible Single Stage Air Conditioner CT system benefits and features for fumace only CT compatible Furnace
65. ater heater etc should not be operated in enclosed areas such as unventilated garages utility rooms or parking areas because of the danger of carbon monoxide CO poisoning resulting from the exhaust emissions If a furnace or air handler is installed an enclosed area such as a garage utility room or parking area and a carbon monoxide producing device is operated therein there must be adequate direct outside ventilation This ventilation is necessary to avoid the danger of CO poisoning which can occur if a carbon monoxide producing device continues to operate in the enclosed area Carbon monoxide emissions can be re circulated throughout the structure if the furnace or air handler is operating in any mode CO can cause serious illness including permanent brain damage or death B10259 216 varie SHOULD OVERHEATING OCCUR OR THE GAS SUPPLY FAIL TO SHUT OFF TURN OFF THE MANUAL GAS SHUTOFF VALVE EXTERNAL TO THE FURNACE BEFORE TURNING OFF THE ELECTRICAL SUPPLY varie POSSIBLE PROPERTY DAMAGE PERSONAL INJURY OR DEATH DUE TO FIRE EXPLOSION SMOKE SOOT CONDENSATION ELECTRICAL SHOCK OR CARBON MONOXIDE MAY RESULT FROM IMPROPER INSTALLATION REPAIR OPERATION OR MAINTENANCE OF THIS PRODUCT varie TO PREVENT PERSONAL INJURY OR DEATH DUE TO IMPROPER INSTALLATION ADJUSTMENT ALTERATION SERVICE OR MAINTENANCE REFER TO THIS MANUAL FOR ADDITIONAL ASSISTANCE OR INFORMATION CONSULT A QUALIFIED INSTALLER SERVICER AGENCY
66. ating plate Overfiring of the furnace can result in premature heat exchanger failure Gas pressures in excess of 13 inches water column can also cause permanent damage to the gas valve At all altitudes the manifold pressure must be within 0 3 inches w c of that listed in the Specification Sheet applicable to your model for the fuel used At all altitudes and with either fuel the 18 air temperature rise must be within the range listed on the fur nace nameplate Should this appliance be converted to LP refer to the instructions included in the factory authorized LP conversion kit HicH ALTITUDE DERATE IMPORTANT NOTE The furnace will naturally derate itself with altitude Do not attempt to increase the firing rate by changing orifices or increasing the manifold pressure This can cause poor combustion and equipment failure High altitude installations may require both a pressure switch andan orifice change These changes are necessary to com pensate for the natural reduction in the density of both the gas fuel and the combustion air at higher altitude For installations Ti 7000 feet please refer to your distribu tor for kit s Manifold Pressure Pressure Re one righ Suge low High Stage Low Stage cow Stage Switch 0 7000 LPM 05 55 LPM 06 1 LPM 05 supports White Rodgers 2 stage valve only LPM 06 supports Honeywell and White Rodgers 2 stage valves NOTE Canada gas fumaces
67. ation requirements so as to provide the cor rect heating temperature rise and correct cooling CFM Use the dual 7 segment LED display adjacent to the dipswitches to obtain the approximate airflow quantity The airflow quantity is displayed as a number on the display rounded to the near est 100 CFM The display alternates airflow delivery indication and the operating mode indication Example The airflow being delivered is 1225 CFM The dis play indicates 12 If the airflow being delivered is 1275 the display indicates 13 1 Determine the tonnage of the cooling system installed with the furnace If the cooling capacity is in BTU hr divide it by 12 000 to convert capacity to TONs Example Cooling Capacity of 30 000 BTU hr 30 000 12 000 2 5 Tons 2 Determine the proper air flow for the cooling system Most cooling systems are designed to work with air flows between 350 and 450 CFM per ton Most manufacturers recommend an air flow of about 400 CFM per ton Example 2 5 tons X 400 CFM per ton 1000 CFM 26 START UP PROCEDURE AND ADJUSTMENT The cooling system manufacturer s instructions must be checked for required air flow Any electronic air cleaners or other devices may require specific air flows consult installa tion instructions of those devices for requirements 3 Knowing the furnace model locate the high stage cooling air flow charts in the Specification Sheet applicable to your model Look up the cooling air f
68. be attached to the back of the furnace For installations requiring more than 1800 CFM use a bottom return or two sided return Supply and return connections to the furnace may be made with flexible joints to reduce noise transmission To prevent the blower from interfering with combustion air or draft when a cen tral return is used a connecting duct must be installed be tween the unit and the utility room wall A room closet or alcove must not be used as a return air chamber When the furnace is used in connection with a cooling unit the furnace should be installed in parallel with or on the upstream side of the cooling unit to avoid condensation in the heating element With a parallel flow arrangement the dampers or other means used to control the flow of air must be adequate to prevent chilled air from entering the furnace and if manually operated must be equipped with means to prevent operation of either unit unless the damper is in the full heat or cool position When the furnace is installed without a cooling coil it is rec ommended that a removable access panel be provided in the outlet air duct This opening shall be accessible when the fur nace is installed and shall be of such a size that the heat exchanger can be viewed for visual light inspection or such that a sampling probe can be inserted into the airstream The ac cess panel must be made to prevent air leaks when the furnace is in operation When the furnace is heat
69. be located between Y1 and Y2 at the furnace control in order to achieve the desired single stage cooling airflow Use of ramping profiles and dehumidification features require a jumper between Y 1 and and Y1 DEHUM respectively NOTE Thermostat required if outdoorunitis equipped with a Comfort Alert module or if the out door unit is a part of the ComfortNet family of equipment AND is wired as a legacy system 16 Thermostat Single Stage Heating with Single Stage Cooling Furnace Integrated Control Module L Dehumidistat Remote Optional Condensing Unit Single Stage Cooling Single Stage Heating with Single Stage Cooling NOTE To apply a single stage Heating Thermostat the thermostat selector switch on the Integrated Control Module must be set on single stage Thermostat Two Stage Heating with Single Stage Cooling Furnace Integrated Control Module gt Dehumidistat Optional Condensing Unit Single Stage Cooling Two Stage Heating with Single Stage Cooling Thermostat Two Stage Heating Two se Cooling Furnace Integrated Control Module Optional Remote 9 Condensing Unit Two Stage Cooling Two Stage Heating with Two Stage Cooling Thermostat Wiring Diagrams SINGLE STAGE HEATING THERMOSTAT APPLICATION Asingle stage thermostat with only one heating stage may be used to control this furnace The application of a single stage th
70. before turning on gas to furnace 6 Turn OFF any unnecessary gas appliances stated in step 3 24 START UP PROCEDURE AND ADJUSTMENT Gas Line Gas Shutoff Valve Gas Line To Furnace Open To tmosphere Drip Leg Cap With Fitting Manometer Hose Manometer Measuring Inlet Gas Pressure Alt Method Gas PRESSURE MEASUREMENT AND ADJUSTMENT caution TO PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE THE GAS MANIFOLD PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING PLATE ONLY MINOR ADJUSTMENTS SHOULD BE MADE BY ADJUSTING THE GAS VALVE PRESSURE REGULATOR Only small variations in gas pressure should be made by ad justing the gas valve pressure regulator The manifold pressure must be measured with the burners operating To measure and adjust the manifold pressure use the following procedure 1 Turn OFF gas to furnace at manual gas shutoff valve external to the furnace 2 Turn off all electrical power to the system 3 Outlet pressure tap connections a Honeywell VR9205 valve Remove the outlet pressure boss plug Install an 1 8 NPT hose barb fitting into the outlet pressure tap b White Rodgers 36G54 valve Back outlet pressure test screw inlet outlet pressure boss out one turn counterclockwise not more than one turn 4 Attach a hose and manometer to the outlet pressure barb fitting Honeywell valve or outlet pressure boss White Rodgers valve
71. by either stripping the wire and using a wire nut or by using a field supplied quick connect terminal The wiring must conform to all local and national codes Connect the COM side of the humidifier to the C terminal on the furnace control board or to the COM side of the 24 VAC transformer Do not connect 115V humidifier to these terminals Gas SUPPLY AND PIPING The furnace rating plate includes the approved furnace gas in put rating and gas types The furnace must be equipped to operate on the type of gas applied This includes any conver sion kits required for alternate fuels and or high altitude caution TO PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE THE INLET GAS SUPPLY PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING PLATE WITH ALL OTHER HOUSEHOLD GAS FIRED APPLIANCES OPERATING Inlet gas supply pressures must be maintained within the ranges specified in the following table The supply pressure must be constant and available with all other household gas fired appli ances operating The minimum gas supply pressure must be maintained to prevent unreliable ignition The maximum must not be exceeded to prevent unit overfiring Inlet Gas Supply Pressure Natural Gas Maximum 10 0 w c Minimum 11 0 w Maximum 13 0 w NOTE Adjusting the minimum supply pressure below the limits in the above table could lead to unreliable ignition Gas input to the burners must not exceed the rated input shown on the r
72. cation A fossil fuel application refers to a combined gas furnace and heat pump installation which uses an outdoor temperature sensor to determine the most cost efficient means of heating heat pump or gas furnace Gas SUPPLY AND PIPING Aheat pump thermostat with three stages of heat is required to properly use a two stage furnace in conjunction with a heat pump Refer to the fossil fuel kit installation instructions for additional thermostat requirements Strictly follow the wiring guidelines in the fossil fuel kit installa tion instructions All furnace connections must be made to the furnace two stage integrated control module and the FUR terminal strip on the fossil fuel control board 115 Voit Line CONNECTION ACCESSORIES HUMIDIFIER AND ELECTRONIC AIR CLEANER WARNING HIGH VOLTAGE TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK DISCONNECT ELECTRICAL POWER BEFORE SERVICING OR CHANGING ANY ELECTRICAL WIRING The furnace integrated control module is equipped with line voltage accessory terminals for controlling power to an optional field supplied humidifier and or electronic air cleaner The accessory load specifications are as follows 1 0 Amp maximum at 120 VAC Electronic Air Cleaner 1 0 Amp maximum at 120 VAC Turn OFF power to the furnace before installing any accesso ries Follow the humidifier or air cleaner manufacturers in structions for locating mounting grounding and
73. combustible material allowed is wood Exposure to contaminated combustion air will result in safety and performance related problems Do not install the furnace where the combustion air is exposed to the following substances chlorinated waxes or cleaners chlorine based swimming pool chemicals water softening chemicals deicing salts or chemicals carbon tetrachloride halogen type refrigerants cleaning solutions such as perchloroethylene printing inks paint removers varnishes hydrochloric acid cements and glues antistatic fabric softeners for clothes dryers and masonry acid washing materials If the furnace is used in connection with a cooling unit install the furnace upstream or in parallel with the cooling unit coil Premature heat exchanger failure will result if the cooling unit coil is placed ahead of the furnace If the furnace is installed in a residential garage position the furnace so that the burners and ignition source are located not less than 18 inches 457 mm above the floor Protect the furnace from physical damage by vehicles If the furnace is installed horizontally the furnace access doors must be vertical so that the burners fire horizontally into the heat exchanger Do not install the unit with the access doors on the down bottom side of the furnace Do not connect this furnace to a chimney flue that serves a separate appliance designed to burn solid fuel For counterflow instal
74. components Use the following precautions during furnace installation and servicing to protect the integrated control module from dam age By putting the furnace the control and the person at the same electrostatic potential these steps will help avoid expos ing the integrated control module to electrostatic discharge This procedure is applicable to both installed and uninstalled ungrounded furnaces 1 Disconnect all power to the furnace Do not touch the integrated control module or any wire connected to the control prior to discharging your body s electrostatic charge to ground 2 Firmly touch a clean unpainted metal surface of the furnace away from the control Any tools held in a person s hand during grounding will be discharged 3 Service integrated control module or connecting wiring following the discharge process in step 2 Use caution not to recharge your body with static electricity i e do not move or shuffle your feet do not touch ungrounded objects etc If you come in contact with an ungrounded object repeat step 2 before touching control or wires 4 Discharge your body to ground before removing a new control from its container Follow steps 1 through 3 if installing the control on a furnace Return any old or new controls to their containers before touching any ungrounded object DIAGNOSTIC CHART w RNiNG HIGH VOLTAGE TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK DISCONNECT E
75. controlling these accessories Accessory wiring connections are to be made through the 1 4 quick connect terminals provided on the furnace integrated control module The humidifier and elec tronic air cleaner hot terminals are identified as HUM and EAC The humidifier and electronic air cleaner neutral terminals are identified as NEUTRAL All field wiring must conform to appli cable codes Connections should be made as shown 15 CIRCUIT CONNECTOR INTEGRATED CONTROL MODULE NEUTRAL HUMIDIFIER ELECTRONIC AIR CLEANER OPTIONAL ACCESSORIES Accessories Wiring If it is necessary for the installer to supply additional line volt age wiring to the inside of the furnace the wiring must conform to all local codes and have a minimum temperature rating of 105 C All line voltage wire splices must be made inside the furnace junction box The integrated control module humidifier terminals HUM are energized with 115 volts whenever the induced draft blower is energized The integrated control module electronic air cleaner terminals EAC are energized with 115 volts whenever the cir culator blower is energized 24 HUMIDIFIER 5 long brown wire in the wire harness at low fire pressure switch provides 24 VAC humidifier control This wire is pow ered any time the pressure switch is closed To connect 24 VAC HUM connect the 24 VAC line of the humidifier to the 5 brown wire The connection can be made
76. d on the dual 7 segment LED display Switch Bank S4 Ramping DIP Switch No Profiles OFF Indicates factory setting Profile A provides only an OFF delay of one 1 minute at 100 of the cooling demand airflow 27 100 4 100 CFM OFF OFF Cooling Demand gt lt gt 1 min Profile B ramps up to full cooling demand airflow by first stepping up to 50 ofthe full demand for 30 seconds The motor then ramps to 100 of the required airflow A one 1 minute OFF delay at 100 of the cooling airflow is provided 100 100 50 OFF 4 1 2 min 1min gt Cooling Demand Profile C ramps up to 85 of the full cooling demand airflow and operates there for approximately 7 1 2 minutes The motor then steps up to the full demand airflow Profile C also has a one 1 minute 100 OFF delay OFF 7 1 2 min Cooling Demand Switch Bank 53 Airflow 85 CFM L 100 CFM 9 OFF 100 CFM 1 min 1 2 OFF ON Indicates factory setting Switch Bank 53 DIP Switch Adjust Taps 3 4 Indicates factory setting Profile D ramps up to 5096 of the demand for 1 2 minute then ramps to 85 of the full cooling demand airflow and operates there for approximately 7 1 2 minutes The motor th
77. e appliance Pipe size will depend on length of pipe run and total load of all appliances Complete information regarding tank sizing for vaporization rec ommended regulator settings and pipe sizing is available from most regulator manufacturers and propane gas suppliers Since propane gas will quickly dissolve white lead and most standard commercial compounds special pipe dope must be used Shellac based compounds resistant to the actions of liquefied petroleum gases such as Gasolac Stalactic Clyde s or John Crane are satisfactory Refer to the following illustration for typical propane gas instal lations and piping 21 CIRCULATING AIR AND FILTERS 5 to 15 PSIG First Stage 20 PSIG Max Regulator Continuous 11 W C 200 PSIG F Second Stage Maximum Regulato Propane Gas Installation Typ PROPANE GAS PIPING CHARTS Sizing Between First and Second Stage Regulator Maximum Propane Capacities listed are based on 2 psig pressure drop at 10 psig setting Capacities in 1 000 BTU hour Pipe or Tubing Tubing Size O D Type L Nominal Pipe Size Schedule 40 Length Feet 3 8 3 4 7 8 1 2 3 4 5 300 8 300 3 200 7 500 3 700 5 800 2200 4 200 2 200 4 700 1 800 4 000 2 700 4 100 1 600 3 700 2 400 3 700 1 500 3 400 2 200 3 300 1 300 310 1 00 2 00 1200 2 600 1 700 2 600 1000 2 300 1 400 2 300 900 2 100 1 300 2 100 830 1
78. e induced draft blower can be rotated 90 degrees for Category venting For horizontal installations a four inch single wall pipe can be used to extend the induced draft blower outlet 1 2 beyond the furnace cabinet THIS PRODUCT IS NOT DESIGNED FOR COUNTERCLOCK WISE INDUCED DRAFT BLOWER ROTATION Vent the furnace in accordance with the National Fuel Gas Code 54 ANSI 7223 1 latest edition In Canada vent the furnace in accordance with the National Standard of Canada CAN CSA B149 1 and CAN CSA B149 2 latest editions and amendments Venting THIS FURNACE IS NOT DESIGN CERTIFIED TO BE HORI ZONTALLY VENTED To rotate the induced draft blower clockwise you will need to purchase one 0270F01119 chimney transition bottom kit 1 Disconnect electrical power from the furnace 2 Disconnect the induced draft blower power leads flue pipe and pressure switch tubing 3 Remove the round cutout from the right side of the wrapper 4 Remove and save the four screws that fasten the induced draft blower to the flue collector box 5 Remove and save the three screws that hold the chimney assembly to the induced draft blower 6 Remove and save the four screws that fasten the chimney top to the chimney bottom 7 Remove the chimney transition bottom from the transition bottom kit 8 Install the chimney top with the four screws retained from step 6 onto the new chimney transition bottom from the transition bottom kit 9 I
79. e of the return duct at the inlet of the furnace Negative Pressure 2 Measure the static pressure of the supply duct Positive Pressure 3 The difference between the two numbers is 4 w c Example static reading from return duct 1 w c static reading from supply duct 3 w c total external static pressure on this system 4 w c NOTE Both readings may be taken simultaneously and read directly on the manometer if so desired If an air conditioner coil or Electronic Air Cleaner is used in conjunction with the furnace the readings must also include theses components as shown in the following drawing 4 Consult proper tables for the quantity of air If the total external static pressure exceeds the maximum listed on the furnace rating plate check for closed dampers regis ters undersized and or oversized poorly laid out duct work SUPPLY AIR Y CUTAWAY OF DUCTWORK o TO EXPOSE COIL INCLINED MANOMETER RETURN AIR A Checking Static Pressure 80 Furnace Shown 90 Similar FILTERS READ Tuis SECTION BEFORE INSTALLING THE RETURN DUCTWORK Filters must be used with this furnace Discuss filter mainte nance with the building owner Filters do not ship with this furnace but must be provided by the installer Filters must com 22 START UP PROCEDURE AND ADJUSTMENT ply with UL900 or CAN ULCS111 standards If the furnace is installed without filters the warranty will be vo
80. en steps up to the full demand airflow Profile D has a 1 2 minute at 50 airflow OFF delay 50 1 2 min 85 100 50 7 1 2 min 1 2 min gt Cooling Demand START UP PROCEDURE AND ADJUSTMENT 7 Select the heating speed for your model from the heating speed chart in the Specification Sheet The adjust setting already established by the cooling speed selection determines which set of speeds are available The selected speed must provide a temperature rise within the rise range listed with the particular model Example The MVC80704BX is set for 990 CFM on cooling the ADJUST is set to plus The four heating speeds available are A Plus B Plus Plus D Plus A Plus has a rise of 38 F for both stages which is within the 20 50 F rise range for the MVC80704BX This setting will keep electrical consumption to minimum Set the Heat speed DIP switches to A Switch Bank S4 Heating DIP Switch No Airflow 7 8 5 Indicates factory setting 8 Select the desired heating speed tap by positioning switches 7 and 8 appropriately Refer to figure above Verify CFM by noting the number displayed on the dual 7 segment LED display In general lower heating speeds will reduce electrical consump tion lower operating sound levels of the blower and increase the
81. enu key Touch Menu again to revert back to the Thermostat Options Menu Touch the Run Sched ule key to step out of all menus and back to the CT thermostat Home Screen Display THERMOSTAT MENU If this furnace is installed with a CT compatible heat pump the system is recognized as a dual fuel system The balance point temperature should be set via the thermostat advanced menu Navigate to the THERMOSTAT menu Press the IN STALLER CONFIG key Navigate to the SETUP menu and press the INSTALLER CONFIG button Navigate to dF BAL PNT Adjust the dual fuel system balance point using the back forward arrows DiAGNOSTICS Accessing the furnace s diagnostics menu provides ready ac cess to the last six faults detected by the furnace Faults are stored most recent to least recent Any consecutively repeated fault is stored a maximum of three times Example Aclogged return air filter causes the furnace limit to trip repeatedly The control will only store this fault the first three consecutive times the fault occurs Navigate to the diagnostics menu as described above in Accessing and Navigating the Advanced Features Menus NOTE Itis highly recommended that the fault history be cleared when performing maintenance or servicing the furnace COMFORTNET SYSTEM Furnace ADVANCED FEATURES MENUS CONFIGURATION D Submenutem _____________ for Display Only not User Modifiable Number of Heat Stages HT STG Displays the number
82. ermostat offers a timed transition from low to high fire The furnace will run on low stage for a fixed period of time before stepping up to high stage to satisfy the thermostat s call for heat The delay period prior to stepping up can be set at either a fixed 5 minute time delay or a load based variable time be tween 1 and 12 minutes AUTO mode If the AUTO mode is selected the control averages the cycle times of the previous three cycles and uses the average to determine the time to transition from low stage to high stage To use a single stage thermostat turn off power to the furnace move the thermostat selection DIP switch to the OFF position Set the desired transition time by setting the transition delay 17 ELECTRICAL CONNECTIONS DIP switch to the desired ON OFF position Turn power back on Refer to the following figure OFF ON Heat OFF Delay Move to the ON position DIP Switches e to select two stage thermostat or OFF to select single stage thermostat 3 Thermostat 4 Stage Delay 51 Move to the ON position to select Auto transition delay or OFF for 5 minute transition delay 24 DEHUMIDISTAT WiRING The optional usage of a dehumidistat allows the furnace s circulator blower to operate at a slightly lower speed 85 of desired speed during a combined thermostat call for cool ing and dehumidistat call for dehumidification This can be done through an independent
83. ete warranty details and instructions are available from your local dealer or at www goodmanmfg com and www amana hac com Your warranty certificate is supplied as a separate document with the unit installed by your contractor Read the limited warranty certificate carefully to determine what is and is not covered and keep the warranty certificate in a safe place If you are unable to locate the warranty certificate please contact your installing contractor or contact customer service 877 254 4729 to obtain a copy To receive the Lifetime Heat Exchanger Limited Warranty good for as long as you own your home and the 10 year Parts Lim ited Warranty online registration must be completed within 60 days of installation Online registration is not required in Cali fornia or Quebec IMPORTANT To register your Goodman brand unit go to www goodmanmfg com Click on the word Warranty located on the left side of the home page Next click on the word Product Registration located on the left side of the Warranty page and complete the forms in the manner indicated on the Product Registration page To register your Amana brand unit go to www amana hac com Click on the word Warranty located on the top right of the LOCATION REQUIREMENTS AND CONSIDERATIONS home page Next click on the word Product Registration located on the left side of the Warranty page and complete the forms in the manner indicated on the Product Regis
84. he service area around the unit must have flooring varie TO PREVENT PROPERTY DAMAGE PERSONAL INJURY OR DEATH DUE TO FIRE DO NOT INSTALL THIS FURNACE IN MOBILE HOME TRAILER OR RECREATIONAL VEHICLE LOCATION REQUIREMENTS AND CONSIDERATIONS To ensure proper furnace operation install operate and maintain the furnace in accordance with these installa tion and operation instructions all local building codes and ordinances In their absence follow the latest edition of the National Fuel Gas Code NFPA 54 ANSI 7223 1 and or CAN CSA 8149 Installation Codes local plumbing or waste water codes and other applicable codes A copy of the National Fuel Gas Code NFPA 54 ANSI 7223 1 can be obtained from any of the following American National Standards Institute 1430 Broadway New York NY 10018 National Fire Protection Association 1 Batterymarch Park Quincy MA 02269 CSA International 8501 East Pleasant Valley Cleveland OH 44131 A copy of the CAN CSA B149 Installation Codes can also be obtained from CSA International 178 Rexdale Boulevard Etobicoke Ontario Canada M9W 1R3 The rated heating capacity of the furnace should be greater than or equal to the total heat loss of the area to be heated The total heat loss should be calculated by an approved method or in accordance with ASHRAE Guide or Manual J Load Cal culations published by the Air Conditioning Contractors of America In the USA this furn
85. heck for corrosion and or buildup within the heat exchanger passageways Burners Check for proper ignition burner flame flame sense Drainage system Check for blockage and or leakage Check hose connections at and internal to furnace e Wiring Check electrical connections for tightness and or corrosion Check wires for damage Filters FiLTERS caution TO ENSURE PROPER UNIT PERFORMANCE ADHERE TO THE FILTER SIZES GIVEN IN THE RECOMMENDED MINIMUM FILTER SIZE TABLE OR SPECIFICATION SHEET APPLICABLE TO YOUR MODEL FILTER MAINTENANCE Improper filter maintenance is the most common cause of in adequate heating or cooling performance Filters should be cleaned permanent or replaced disposable every two months or as required When replacing a filter it must be replaced with a filter of the same type and size FILTER REMOVAL Depending on the installation differing filter arrangements can be applied Filters can be installed in either the central return register or a side panel external filter rack upflow only A media air filter or electronic air cleaner can be used as an alter nate filter Follow the filter sizes given in the Recommended Minimum Filter size table to ensure proper unit performance To remove filters from an external filter rack in an upright upflow installation follow the directions provided with external filter rack kit HonizoNrAL UNIT FILTER REMOVAL Filters in horizontal i
86. her mostat and a non ComfortNet compatible single stage air con ditioning unit However this reduces the benefits of the ComfortNet system as the enhancements will only apply to the furnace APPLICATION This furnace is primarily designed for residential home heating applications It is NOT designed or certified for use in mobile homes trailers or recreational vehicles Neither is it designed or certified for outdoor applications The furnace must be in stalled indoors i e attic space crawl space or garage area provided the garage area is enclosed with an operating door This furnace can be used in the following non industrial com mercial applications Schools Office buildings Churches Retail stores Nursing homes Hotels motels Common or office areas In such applications the furnace must be installed with the following stipulations It must be installed per the installation instructions provided and per local and national codes It must be installed indoors in a building constructed on site It must be part of a ducted system and not used in a free air delivery application tmust not be used as a make up air unit Allother warranty exclusions and restrictions apply This furnace may be used as a construction site heater ONLY if the following conditions are met The vent system is permanently installed per these installation instructions Aroom thermostat 5 used to co
87. ided NOTE An undersized opening will cause reduced airflow The bottom return is set up as a knock out UPRIGHT INSTALLATIONS Depending on the installation and or customer preference dif fering filter arrangements can be applied Filters can be in stalled in the central return register or a side panel external filter rack kit upflows or the ductwork above a downflow fur nace As an alternative a media air filter or electronic air cleaner can be used as the primary filter CIRCULATION Air FILTERS One of the most common causes of a problem in a forced air heating system is a blocked or dirty filter Circulating air filters must be inspected monthly for dirt accumulation and replaced if necessary Failure to maintain clean filters can cause prema ture heat exchanger failure A new home may require more frequent replacement until all construction dust and dirt is removed Circulating air filters are to be installed in the return air duct external to the furnace cabinet MINIM UM FILTER SIZES for DISPOSABLE FILTERS FILTER SIZE FURNACE INPUT 70M 90M 115M DISPOSABLE NOMINAL 300 F M FACE VELOCITY HORIZONTAL INSTALLATIONS Filters must be installed in either the central return register or in the return air duct work START UP PROCEDURE AND ADJUSTMENT Furnace must have a 115 VAC power supply properly connected and grounded Proper polarity must be maintained for correct operation In addition to the following star
88. ill when installed per the manufacturer s in structions prevent problems due to rain birds or wind effects A B vent installed as described in this section is considered to be an enclosed vent system and the sizing tables in National Fuel Gas Code NFPA 54 ANSI Z223 1 latest edition and in the National Standard of Canada CAN CSA B149 1 and CAN CSA B149 2 latest editions and amendments may be used If a flexible liner is to be used it must be made of the proper materials For most residential applications an aluminum liner should be acceptable combustion air supplied to the furnace will be contaminated with compounds containing chlorine or fluorine a liner of AL 29 4C stainless steel should be used Common sources of chlorine and fluorine compounds include indoor swimming pools and chlorine bleaches paint strippers adhesives paints varnishes sealers waxes which are not yet dried and solvents used during construction and remodeling Various commercial and industrial processes may also be sources of chlorine fluorine compounds e Heavier gauge 300 and 400 series stainless steel liners were developed for use with oil or solid fuel appliances They are not suitable for use with gas fired appliances Flexible liners specifically intended and tested for gas applications are listed in the UL Gas and Oil Equipment Directory UL Standard 1777 For sizing of flexible liners see Note 22 and the tables in the
89. ing the temperature of the return air entering the furnace must be between 55 F and 100 F When a furnace is installed so that supply ducts carry air cir culated by the furnace to areas outside the space containing the furnace the return air shall also be handled by a duct sealed to the furnace casing and terminating outside the space con taining the furnace Duct Static Refer to your furnace rating plate for the maximum ESP exter nal duct static rating Total external static refers to everything external to the furnace cabinet Cooling coils filters ducts grilles registers must all be considered when reading your total external static pres sure The supply duct pressure must be read between the fur nace and the cooling coil This reading is usually taken by removing the A shaped block off plate from the end on the coil drilling a test hole in it and reinstalling the block off plate Take a duct static reading at the test hole Tape up the test hole after your test is complete The negative pressure must be read between the filter and the furnace blower Too much external static pressure will result in insufficient air that can cause excessive temperature rise This can cause limit switch tripping and heat exchanger failure To determine total external duct static pressure proceed as follows 1 With clean filters in the furnace use a draft gauge inclined manometer to measure the static pressur
90. ion must be selected and installed in accordance with the liner manufacturer s instructions Finally cap the chimney and terminate the liner in accordance with the liner manufacturer s instructions ELECTRICAL CONNECTIONS WARNING HIGH VOLTAGE TO AVOID THE RISK OF ELECTRICAL SHOCK WIRING TO THE UNIT MUST BE POLARIZED AND GROUNDED WARNING HIGH VOLTAGE TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK DISCONNECT ELECTRICAL POWER BEFORE SERVICING OR CHANGING ANY ELECTRICAL WIRING caution LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING CONTROLS WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION VERIFY PROPER OPERATION AFTER SERVICING varie HIGH VOLTAGE TO AVOID THE RISK OF INJURY ELECTRICAL SHOCK OR DEATH THE FURNACE MUST BE ELECTRICALLY GROUNDED IN ACCORDANCE WITH LOCAL CODES OR IN THEIR ABSENCE WITH THE LATEST EDITION OF THE NATIONAL ELECTRIC CODE r WiRING HARNESS The wiring harness is an integral part of this furnace Field alteration to comply with electrical codes should not be re quired Wires are color coded for identification purposes Re fer to the wiring diagram for wire routings If any ofthe original wire as supplied with the furnace must be replaced it must be replaced with wiring material having a temperature rating of at least 105 C Any replacement wiring must be a copper con ductor 115 LINE CONNECTIONS Before
91. l automatically reset itself and attempt to resume normal operations following a one hour lockout period 2 Manual power interruption Interrupt 115 volt power to the furnace 3 Manual thermostat cycle Lower the thermostat so that there is no longer a call for heat for 1 20 seconds then reset to previous setting NOTE If the condition which originally caused the lockout still exists the control will return to lockout Refer to the Diagnostic Chart for aid in determining the cause MAINTENANCE w RNiNG TO AVOID ELECTRICAL SHOCK INJURY OR DEATH DISCONNECT ELECTRICAL POWER BEFORE PERFORMING ANY MAINTENANCE YOU MUST HANDLE THE IGNITER HANDLE WITH CARE TOUCHING THE IGNITER ELEMENT WITH BARE FINGERS ROUGH HANDLING OR VIBRATION COULD DAMAGE THE IGNITER RESULTING IN PREMATURE FAILURE ONLY A QUALIFIED SERVICER SHOULD EVER HANDLE THE IGNITER ANNUAL INSPECTION The furnace should be inspected by a qualified installer or ser vice agency at least once per year This check should be per formed at the beginning of the heating season This will ensure that all furnace components are in proper working order and that the heating system functions appropriately Pay particular attention to the following items Repair or service as neces sary MISCELLANEOUS e Flue pipe system Check for blockage and or leakage Check the outside termination and the connections at and internal to the furnace e Heat exchanger C
92. laced by gas fired appliance s the tile liner must first be cleaned to remove the fuel oil residue If none of the above options is practical the furnace may need to be vented vertically with a B Vent Under some conditions a 9096 furnace could be installed rather than an 8096 furnace The 90 furnace can be vented hori zontally or vertically through PVC pipe Fix 3 REBUILD THE CROWN If the chimney crown is damaged a qualified mason must re pair itin accordance with nationally recognized building codes or standards One such standard which may be referenced is the Standard for Chimneys Fireplaces Vents and Solid Fuel Burning Appliances ANSI NFPA 211 Fix 4 RELINING Relining options include B vent and flexible liners If the chimney has diagonal offsets B vent probably cannot be used If B vent to be used it must be supported adequately Sup ports such as fire stops or thimbles must be used to prevent the B vent from coming into direct contact with the tile liner or chimney walls Direct contact would result in higher heat loss with an increased possibility of poor venting system perfor mance Itis notacceptable to vent one appliance inside the B vent and other appliances outside The excess space between the B vent and the chimney walls must be covered at the top of the chimney by a weatherproof corrosion resistant flashing The B vent should then be topped with a listed vent cap The listed vent cap w
93. lations the air conditioning coil must be downstream from the heat exchanger of the furnace Counterflow installation over a noncombustible floor Before setting the furnace over the plenum opening ensure the surface around the opening is smooth and level Atight seal should be made between the furnace base and floor by using a silicon rubber caulking compound or cement grout Counterflow installation over a combustible floor If installation over a combustible floor becomes necessary use an accessory subbase see Specification Sheet applicable to your model for details A special accessory subbase must be used for upright counterflow unit installations over any combustible material including wood Follow the instructions with the subbase for proper installations Do not install the furnace directly on carpeting tile or other combustible material other than wood flooring NOTE The subbase will not be required if an air conditioning coil is installed between the supply air opening on the furnace and the floor LOCATION REQUIREMENTS AND CONSIDERATIONS Vent Pipe Clearance to Combustibles gt 6 using Single Wall Connector 1 using B 1 vent Side Clearance Rw ire Front Clearance 3 _ _ Adequate combustion ventilation air must be supplied to the closet Furnace must be completely sealed to floor or base
94. le Specification Sheet referred to in this manual WARNING GOODMAN WILL NOT BE RESPONSIBLE FOR ANY INJURY OR PROPERTY DAMAGE ARISING FROM IMPROPER SERVICE OR SERVICE PROCEDURES IF YOU INSTALL OR PERFORM SERVICE ON THIS UNIT YOU ASSUME RESPONSIBILITY FOR ANY PERSONAL INJURY OR PROPERTY DAMAGE WHICH MAY RESULT MANY JURISDICTIONS REQUIRE A LICENSE TO INSTALL OR SERVICE HEATING AND AIR CONDITIONING EQUIPMENT 5151 San Felipe Suite 500 Houston TX 77056 ps www goodmanmfg com www amana hac com 361 2009 2010 Goodman Manufacturing Company L P 12 10 Table of Contents SAFETY PRECAUTIONS sets Eat oue cs cai dava ns Guu ES TRUE CV aV OS CR A CRM ES 4 ADDITIONAL SAFETY CONSIDERATIONS 5 SHIPPING INSPECTION cts pedo 5 ELECTROSTATIC DISCHARGE ESD 5 THE INSTALLER TP 5 IMPORTANT NOTE TO THE OWNER REGARDING PRODUCT WARRANTY 5 PRODUCT DESCRIPTION ccscccssccnscccneccnsscnsseccnscensecnsecenecensecnaceecnseenseenseeunecenseensaeocaesensecneaeonesenssenseseasesenssenaess 6 PERT RES tasa LL UE
95. low determined in step 2 and find the required cooling speed and adjustment setting Example A MVC80704BX furnace installed with a 2 5 ton air conditioning system The air flow needed is 1000 CFM Looking at the cooling speed chart for MVC80704BX find the air flow closest to 1000 CFM A cooling airflow of 990 CFM can be attained by setting the cooling speed to C and the adjustment to minus Continuous fan speed is 3096 ofthe furnace s maximum airflow capability Example Ifthe furnace s maximum airflow capability is 2000 CFM the continuous fan speed will be 0 30 x 2000 CFM 600 CFM Locate the blower speed selection DIP switches on the integrated control module Select the desired cooling speed tap by positioning switches 1 and 2 appropriately Select the desired adjust tap by positioning switches 3 and 4 appropriately Refer to the following figure for switch positions and their corresponding taps Verify CFM by noting the number displayed on the dual 7 segment LED display The multi speed circulator blower also offers several custom ON OFF ramping profiles These profiles may be used to enhance cooling performance and increase comfort level The ramping profiles are selected using DIP switches 5 and 6 Refer to the following figure for switch positions and their corresponding taps Refer to the bullet points below for a description of each ramping profile Verify CFM by noting the number displaye
96. lower steps to low speed following prepurge Low stage pressure switch contacts are closed Igniter warm up begins upon step to low speed and presence of closed low stage pressure switch contacts 34 OPERATIONAL CHECKS amp SAFETY CiRCUIT DESCRIPTION Gas valve opens at end of igniter warm up period delivering gas to burners and establishing flame Integrated control module monitors flame presence Gas valve will remain open only if flame is detected If the thermostat call is for low heat gas valve and induced draft blower will continue on low stage If the call is for high heat the gas valve and induced draft blower will change to high stage Circulator blower is energized on heat speed following a thirty 30 second blower on delay The circulator blower requires thirty seconds to ramp up to full speed Electronic air cleaner terminal is energized with circulator blower Furnace is now operating on the specified stage called for by the two stage thermostat Furnace runs integrated control module monitors safety circuits continuously If the two stage thermostat changes the call from low heat to high heat the integrated control module will immediately switch the induced draft blower gas valve and circulator blower to their high stage settings If the two stage thermostat changes the call from high heat to low heat the control will immediately switch the induced draft blower and gas valve to their low stage settings
97. lt Touch lt or keys to view the fault status of any remaining equipment The text NO FAULTS will be scrolled if no errors are present AH Call for Service NU BLOW FH db EB Call for Service NO A V Advanc Advance eal Touch the gt to step through the list of installed equip ment including the thermostat Touch the Installer Config key to enter the submenus for the equipment displayed The text WORKING will be displayed in the scrolling display area while the data is being retrieved The first sub menu is then displayed See tables below for listing of furnace submenus A gt VD Run hedule Run hedule Touch the A or gt to step through the list of submenus and view settings If a setting can be adjusted lt J and P keys will appear Use the X or gt keys to adjust the setting to the desired value Touch the A or gt to step to the next item WORKING will appear as the settings are being updated DONE will appear to indicate the change was accepted If 31 COMFORTNET SYSTEM the change is not accepted the display will show FAIL then revert to the Fault Screen Some parameters being displayed switch between the item name and the item value Touch the Hold key to momentarily stop the display from switching To exit an equipment submenu and revert back to the equip ment menus touch the M
98. lue 1 000 Obtained from gas supplier Installation s seconds per cubic foot 34 sec ft Conversion Factor hours to seconds 3600 sec hr Input value x 3600 seconds per cubic foot Input 1 000 x 3600 sec hr 34 sec ft Input 106 000 BTU hr Minor changes to the input rate may be accomplished through manifold pressure adjustments at the gas valve Refer to Sec tion XIV Startup Procedure and Adjustment Gas Manifold Pressure Measurement and Adjustment for details NOTE The final manifold pressure cannot vary by more than 0 3 w c from the specified setting Consult your local gas supplier if additional input rate adjustment is required 5 Repeat steps 2 through 4 on high stage 6 Turn ON gas to and relight all other appliances turned off step 1 Be certain that all appliances are functioning properly and that all pilot burners are operating TEMPERATURE RISE Temperature rise must be within the range specified on the unit rating plate An incorrect temperature rise may result in con densing in or overheating of the heat exchanger An airflow and temperature rise table is provided in the Specification Sheet applicable to your model Determine and adjust temperature rise as follows 1 Operate furnace with burners firing for approximately ten minutes Ensure all registers are open and all duct dampers are in their final fully or partially open position 2 Place thermometers in the
99. mands are managed differently in a fully communi cating system than they are in a legacy wired system The system operating mode as determined by the thermostat determines which unit calculates the system airflow de mand If the indoor unit is responsible for determining the airflow demand it calculates the demand and sends it to the COMFORTNET SYSTEM ECM motor If the outdoor unit or thermostat is responsible for determining the demand it calculates the demand and transmits the demand along with a fan request to the indoor unit The indoor unit then sends the demand to the ECM motor The table below lists the various ComfortNet sys tems the operating mode and airflow demand source Sisi System Airflow Demand Operating Mode Source Air Conditioner Thermostat Thermostat For example assume the system is an air conditioner matched with a furnace With a call for low stage cooling the air conditioner will calculate the system s low stage cooling airflow demand The air conditioner will then senda fan request along with the low stage cooling airflow demand to the furnace Once received the furnace will send the low stage cooling airflow demand to the ECM motor The ECM motor then delivers the low stage cooling airflow See the applicable ComfortNet air conditioner or heat pump installation manual for the airflow delivered during cooling or heat pump heating Air Conditioner Furnace Continuous Fan Heat P
100. mpressor are energized to their appropriate speed e Circulator blower is energized on the appropriate cool speed the level and time determined by the selected ramping profile Electronic air cleaner terminal is energized with circulator blower Furnace circulator blower and outdoor cooling unit run their appropriate speeds integrated control module monitors safety circuits continuously Y1 G or Y2 G thermostat contacts open completing the call for cool e Outdoor fan and compressor are de energized Circulator blower continues running during a cool off delay period The OFF delay time and airflow level are determined by the selected ramping profile Electronic air cleaner terminal and circulator blower are de energized Furnace awaits next call from thermostat FANONLY The normal operational sequence in fan only mode is as fol lows e Rand G thermostat contacts close initiating a call for fan Integrated control module performs safety circuit checks Circulator blower is energized on continuous fan speed 30 of the furnace s maximum airflow capability following a five 5 second delay Electronic air cleaner terminal is energized Circulator blower runs integrated control module monitors safety circuits continuously e Rand thermostat contacts open completing the call for fan Circulator blower is de energized Electronic air cleaner terminal is de energized F
101. must not to interfere with circulator blower operation filter removal or routine maintenance 15 ELECTRICAL CONNECTIONS JUNCTION Box RELOCATION Ay WARNING EDGES OF SHEET METAL HOLES MAY BE SHARP USE GLOVES AS A PRECAUTION WHEN REMOVING HOLE PLUGS Line voltage connections can be made through either the right or left side panel The furnace is shipped configured for a right side electrical connection To make electrical connections through the opposite side of the furnace the junction box must be relocated to the left side prior to making electrical connec tions To relocate the junction box perform the following steps Ay WARNING TO PREVENT PERSONAL INJURY OR DEATH DUE TO ELECTRIC SHOCK DISCONNECT ELECTRICAL POWER BEFORE INSTALLING OR SERVICING THIS UNIT 1 Remove both doors from the furnace 2 Remove save the screws holding the junction box to the right side of the furnace 3 Models that have the junction box located in the burner or blower compartment will need to move the junction box directly over 4 Attach the junction box to the left side of the furnace using the screws removed in step 2 5 Check the location of the wiring Confirm that it will not be damaged by heat from the burners or by the rotation of the fan Also confirm that wiring location will not interfere with filter removal or other maintenance After the junction box is in the desired location use washers to connect field su
102. n practice this can be difficult to detect e Exterior chimneys The tables in National Fuel Gas Code NFPA 54 ANSI Z223 1 latest edition and in the National Standard of Canada CAN CSA B 149 1 and CAN CSA B149 2 latest editions and amendments assume interior chimneys If in the judgment of the local gas utility installer and or local codes one or more of the above factors is likely to present a problem the chimney must be relined Fix 4 Fix 1 LINER TERMINATION Any cap or roof assembly used with a liner must be approved by the liner manufacturer for such use The liner and cap roof assembly must then terminate above the roof in accordance with the manufacturer s instructions In some cases a shorter extension above the roof may be possible with a liner than would be required with a masonry chimney For further information on relining see Fix 4 Fix2 CHANGE VENTING ARRANGEMENTS If the masonry chimney has more than one channel it may be possible to vent the gas appliances into one channel and vent the solid or liquid fuel appliance s into another channel s Do not vent an 80 Furnace inside of a metal liner with other appli ances vented outside the liner Alternatively the homeowner may agree to discontinue use of the fireplace solid fuel appliance If so the tile liner must be cleaned to remove creosote buildup The fireplace opening must then be permanently sealed If oil fired appliance s are being rep
103. nge venting liquid fuel No arrangements appliances Fix 2 Check 2 Yes Rebuild crown rown in good Fix 3 condition No and or Reline Check 3 Fix 4 Yes Cleanout free of Reline debris No Check 4 Fix 4 Yes Liner in good condition No 5 FU Yes Dilution air Reline available No Check 6 Fix 4 Yes Complete the installation Check 7 1 PROPER CHIMNEY TERMINATION A masonry chimney used as a vent for gas fired equipment must extend at least three feet above the highest point where it passes through the roof It must extend at least two feet higher than any portion of a building within a horizontal distance of 10 feet In addition the chimney must terminate at least 3 feet above any forced air inlet located within 10 feet The chimney must extend at least five feet above the highest connected equip ment draft hood outlet or flue collar If the chimney does not meet these termination requirements but all other requirements in the checklist can be met it may be possible for a mason to extend the chimney If this will not be practical see Fix 1 10 or Less gt 2 2 Wall Parapet Chimney ILIA pus 10 or Less gt 2 Min Ridge 4 Chimney KS Termination 10 Feet Or Less From Ridge Wall or Parapet lt More than 10 4 3 Min NOTE No Heigh
104. non positive pressure A furnace vented as Category is considered a fan assisted ap pliance and the vent system does not have to be gas tight NOTE Single stage gas furnaces with induced draft blowers draw products of combustion through a heat exchanger allow ing in some instances common venting with natural draft ap pliances i e water heaters All installations must be vented accordance with National Fuel Gas Code NFPA 54 ANSI 7223 1 latest edition In Canada the furnaces must be vented in ac cordance with the National Standard of Canada CAN CSA B149 1 and CAN CSA 149 2 latest editions and amendments NOTE The vertical height of the Category venting system must be at least as great as the horizontal length of the venting system WARNING TO PREVENT POSSIBLE PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION COMMON VENTING WITH OTHER MANUFACTURER S INDUCED DRAFT APPLIANCES IS NOT ALLOWED The minimum vent diameter for the Category venting system is as shown MODEL 90 Under some conditions larger vents than those shown above may be required or allowed When an existing furnace is re moved from a venting system serving other appliances the venting system may be too large to properly vent the remaining attached appliances Upflow or Horizontal units are shipped with the induced draft blower discharging from the top of the furnace Top is as viewed for an upflow installation Th
105. nsformer is included with the CTKO1AA kit See kit instructions for mounting and wiring instructions Four wires are required between the indoor unit and thermo stat NOTE Use of the CTKO1AA transformer is recommended if instaling a dual fuel fossil fuel system Failure to use the transformer in the outdoor unit could result in over loading of the furnace transformer CTK01AA CT Compatible 1 2 R Thermostat 00290 Furnace Integrated Control Module ODORO 40VA Transformer included in kit 208 230 VAC System Wiring using Two Wires between Furnace and and Four Wires between Furnace and Thermostat CT Compatible AC HP Integrated Control Module COMPATIBLE FURNACE WITH Non CT COMPATIBLE SINGLE STAGE AIR CONDITIONER Four wires are required between the furnace and thermostat Two wires are required between the furnace control and single stage air conditioner For this system configuration the Y1 terminal on the integrated furnace control becomes an output rather than an input The Y1 connection to the outdoor unit is made using both 4 position thermostat connectors in the kit Remove the red keying tabs from the on board connector block and position both 4 position connectors such that 1 2 and Y1 positions are filled CTK01AA Thermostat 4 Position Connectors from CTKO1AA Thermostat Kit
106. nstall chimney assembly with the three screws retained from step 5 onto the induced draft blower Reinstall the induced draft blower rotating it 90 degrees clockwise from the original upflow configuration using the four screws retained in step 3 Ensure the gasket located between the induced draft blower and the collector box is rotated accordingly 10 EXTERIOR MASONRY CHIMNEYS CATEGORY l FURNACES ONLY 11 Reconnect the induced draft blower power leads NOTE If the wires are not long enough pull extra wire from the wire bundle in the blower compartment 12 Reconnect the flue pipe and the pressure switch tubing Ensure that all wires and the pressure switch tubing is at least one inch from the flue pipe or any other hot surface 13 Restore power to furnace Counterflow units are shipped with the induced draft blower discharging from the top of the furnace Top as viewed fora counterflow installation Vent the furnace in accordance with the National Fuel Gas Code NFPA54 ANSI Z223 1 latest edition In Canada vent furnace in accordance with the national standard of Canada CAN CSA B149 1 and CAN CSA B149 2 latest editions and amendments WARNING NEVER ALLOW THE PRODUCTS OF COMBUSTION INCLUDING CARBON MONOXIDE TO ENTER THE RETURN DUCTWORK OR CIRCULATION AIR SUPPLY ExTERIORIVIASONRY CATEGORY I FURNACES ONLY An exterior masonry chimney is defined as a Masonry chim ney exposed
107. nstallations are located in the central re turn register or the ductwork near the furnace To remove 1 Turn OFF electrical power to furnace 2 Remove filter s from the central return register or ductwork 3 Replace filter s by reversing the procedure for removal 4 Turn ON electrical power to furnace Air FILTER OR ELECTRONIC AIR CLEANER REMOVAL Follow the manufacturer s directions for service 37 MISCELLANEOUS BURNERS Visually inspect the burner flames periodically during the heat ing season Turn on the furnace at the thermostat and allow several minutes for flames to stabilize since any dislodged dust will alter the flames normal appearance Flames should be stable quiet soft and blue dust may cause orange tips but they must not be yellow They should extend directly outward from the burners without curling floating or lifting off Flames must not impinge on the sides of the heat exchanger firing tubes INDUCED DRAFT AND CIRCULATOR BLOWERS The bearings in the induced draft blower and circulator blower motors are permanently lubricated by the manufacturer No fur ther lubrication is required Check motor windings for accumu lation of dust which may cause overheating Clean as neces sary FLAME SENSOR QUALIFIED SERVICER ONLY Under some conditions the fuel or air supply can create a nearly invisible coating on the flame sensor This coating acts as an insulator causing a drop in the flame
108. ntrol the furnace Fixed jumpers that provide continuous heating CANNOT be used Returnair ducts are provided and sealed to the furnace Areturn air temperature range between 60 F 16 C and 80 F 27 C is maintained Air filters are installed in the system and maintained during construction replaced as appropriate during construction and upon completion of construction are replaced input rate and temperature rise are set per the furnace rating plate e 100 outside air is provided for combustion air requirements during construction Temporary ducting can be used NOTE Do not connect the temporary duct directly to the furnace The duct must be sized for adequate combustion and ventilation in accordance with the latest edition of the National Fuel Gas Code NFPA 54 ANSI Z223 1 orCAN CSA B149 1 Installation Codes furnace heat exchanger components duct System air filters and evaporator coils are thoroughly cleaned following final construction clean up All furnace operating conditions including ignition input rate temperature rise and venting are verified according to these installation instructions NOTE The Commonwealth of Massachusetts requires that the following additional requirements must also be met Gasfurnaces must be installed by a licensed plumber or gas fitter AT handle gas cock must be used e Ifthe unitis to be installed in an attic the passageway to and t
109. o shipment or container Notify carrier promptly and request an inspection With concealed damage carrier must be notified as soon as possible preferably within five days File the claim with the following support documents within a nine month statute of limitations Original or certified copy of the Bill of Lading or indemnity bond Original paid freight bill or indemnity in lieu thereof Original or certified copy of the invoice showing trade and other discounts or reductions Copy of the inspection report issued by carrier s representative at the time damage is reported to carrier 2 3 The carrier is responsible for making prompt inspection of dam age and for a thorough investigation of each claim The distribu tor or manufacturer will not accept claims from dealers for trans portation damage Keep this literature in a safe place for future reference ELECTROSTATIC DiscHARGE ESD PRECAUTIONS NOTE Discharge body s static electricity before touching unit An electrostatic discharge can adversely affect electrical com ponents Use the following precautions during furnace installation and servicing to protect the integrated control module from dam age By putting the furnace the control and the person at the same electrostatic potential these steps will help avoid expos ing the integrated control module to electrostatic discharge 5 APPLICATION This procedure is applicable to both installed and
110. of furnace heating stages Input Rate BTU HR Displays the furnace input rate in kBtu hr Motor HP 1 2 34 or 1 MTR HP Displays the furnace indoor blower motor horsepower DIAGNOSTICS Indication User Modifiable Options Clear Fault History CLEAR NO or YES iE Pre RUM Fault 1 FAULT 1 Fault 2 FAULT 2 Fault 3 FAULT 3 Fault 4 FAULT 4 Fault 5 FAULT 5 Fault 6 FAULT 6 2 J OTE Consecutively repeated faults are shown a maximum of 3 times _________5 _ indication for Display Only not User Modifiable Sofware SOFTWARE SET UP User Modifiable Options Heat Airflow Trim HT TRM 10 to 10 in 2 increments Trims the heating airflow by the selected default is 0 amount default is 30 seconds Heat OFF Delay HT OFF 30 60 90 120 150 or 180 seconds Selects the indoor blower heat OFF delay D 2c ee Heat Airflow HT ADJ 1 2 3 or4 Selects the nominal heating airflow see Startup Procedure and Adjustment Circulator Blower Speeds for addition information Mode 32 COMFORTNET SYSTEM NON COMM APPLIES ONLY TO ACT COMPATIBLE FURNACE MATCHED WITH A NON CT COMPATIBLE SINGLE STAGE AIR CONDITIONER User Modifiable Options Cool Airflow CL NEL 18 24 30 36 42 48 or 60 default Selects the airflow for the non CT is 18 compatible single stage AC unit default is 096 Cool Airflow Trim CL TRM 10 to 10 in 2 increments
111. onditioned air passing over the heat exchanger AUXILIARY LIMIT The auxiliary limit controls are located on or near the circulator blower and monitors blower compartment temperatures They are anormally closed electrically auto reset sensors These limits guard against overheating as a result of insufficient con ditioned air passing over the heat exchanger RoLLOUT Limit The rollout limit controls are mounted on the burner manifold assembly and monitor the burner flame They are normally closed electrically manual reset sensors These limits guard against burner flames not being properly drawn into the heat exchanger PRESSURE SWITCHES The pressure switches are normally open closed during op eration negative air pressure activated switches They moni tor the airflow combustion air and flue products through the heat exchanger via pressure taps located on the induced draft blower and the coil front cover These switches guard against insufficient airflow combustion air and flue products through the heat exchanger and or blocked condensate drain condi tions FLAME SENSOR The flame sensor is a probe mounted to the burner manifold assembly which uses the principle of flame rectification to de termine the presence or absence of flame TROUBLESHOOTING ELectrostatic DiscHARGE ESD PRECAUTIONS NOTE Discharge body s static electricity before touching unit An electrostatic discharge can adversely affect electrical
112. ornssoid 53105 21049 zo 11615 2p09 3 soprAo1d nedos YOUIMS Sup ons sjoejuoo Q3SO12 poso st YOUMS ejdsip o 440 Jomod um 91155924 951 ooe dos yoyms 55 8635 MOT 1 154 9155019 98 15 MOT 13 0j 5 yep poonpur Jo 8 ainssoid 19409 124044 8 Voeu lo pue ur uorornso1 pue 8 10 211155014 528 eexoo q 107 Surdid ony YooyD soure j Ajddns peziprxo 10 pue pojeoo JI 105095 seg q s rejop Surdid 107 401295 pues eUSIS osuos JO juoulgst qejso 1oje JO 5501 995 JOMUSI 10 Josuos 8 5 oo um T Kressooou 4 10 poziprxo payeoo 0108 181500071991 105095 pues panog 122 100 Jo sovio Jodordunt uoor IMAS YIM Zum asoy qos 193081 10 1938031993 8 SI
113. os A 1edoudui 6 ou soprAoud medos poje18ojur pue 10 uodo ITAVA 0 pz OU 10 0 440 Jomod 0 pc pue c o1nssy TAO Pms enue 0 ST ON suonney 29 S9 ON 94499440 2141504 298559 9 959 meg 5 snjejs onsouseiq L 29 39 TROUBLESHOOTING CHART 3921109 4901109 191081 2989 Aressooou jr Jou 291081 12095 18 3291100 pue JOYO poyious doy e npour o3yuoo uo 18 100g 8 ooeum q 39992 5110108 383500190 pw pJONWOJWOD UOT 10 3838001790 wrONWOFUIOD epoo JOHS 3 nedar 0 o npour
114. outlet air temperature delivered to the home The speeds available allow the blower performance to be optimized for the particular homeowner s needs Blower Heat Orr DELAY TIMINGS The integrated control module provides a selectable heat off delay function The heat off delay period may be set to 90 120 150 180 seconds using the DIP switches or jumper provided on the control module The delay is factory shipped at 150 seconds but may be changed to suit the installation require ments and or homeowner preference Refer to the following fig ures for switch positions and corresponding delay times Switch Bank 51 DIP Switch No Heat OF F Delay 1 2 OFF OFF Indicates factory setting Heat Off Delay Dipswitches N Speed Selection Dip Switches Model Tap Low Stage High Stage Low Stage High Stage Cool Cool Heat Heat Cool Adjust Profile Heat Selection Selection Selection Selection Switches Switches Switches Switches pem DVC809050X OFF Delay DNS ee eme 75 182 60 100 penes ee To set airflow 1 Select model and desired high stage cooling airflow Determine the corresponding tap A B or DI Set dip switches and 2 to the appropriate OFF positions 2 Select model and desired high stage MVC80905CX heating airflow Determine the corresponding tap A B or D Set dip switches 7 and 8 to the appropriate ON OFF positions 3 Select the airflow
115. pplied conduit to the junction box in accordance with NEC and local codes Connect hot neutral and ground wires as shown in the furnace wiring diagram The wires and ground screw are located in the furnace junction box NOTE In downflow applications the power leads should be routed through the supplied wire tabs when locating junction box to the left side Low voltage wires may be connected to the terminal strip IMPORTANT NOTE To avoid possible equipment malfunction route the low voltage wires to avoid interference with filter re moval or other maintenance WARNING HIGH VOLTAGE TO AVOID THE RISK OF INJURY ELECTRICAL SHOCK OR DEATH THE FURNACE MUST BE ELECTRICALLY GROUNDED IN ACCORDANCE WITH LOCAL CODES OR IN THEIR ABSENCE WITH THE LATEST EDITION OF THE NATIONAL ELECTRIC CODE To ensure proper unit grounding the ground wire should run from the furnace ground screw located inside the furnace junc tion box all the way back to the electrical panel NOTE Do not use gas piping as an electrical ground To confirm proper unit grounding turn off the electrical power and perform the following check 1 Measure resistance between the neutral white connection and one of the burners 2 Resistance should measure 10 ohms or less This furnace is equipped with a blower door interlock switch which interrupts unit voltage when the blower door is opened for servicing Do not defeat this switch 24 Voir THERMOS
116. proceeding with electrical connections ensure that the supply voltage frequency and phase correspond to that speci fied on the unit rating plate Power supply to the furnace must be NEC Class 1 and must comply with all applicable codes The furnace must be electrically grounded in accordance with local codes or in their absence with the latest edition of The National Electric Code ANSI NFPA 70 and or The Canadian Electric Code CSA 22 1 Use a separate fused branch electrical circuit containing prop erly sized wire and fuse or circuit breaker The fuse or circuit breaker must be sized in accordance with the maximum over current protection specified on the unit rating plate An electri cal disconnect must be provided at the furnace location Connect hot neutral and ground wires as shown in the wiring diagram located on the unit s blower door Line polarity must be observed when making field connections Line voltage connections can be made through either the right or left side panel The furnace is shipped configured for a right side electrical connection with the junction box located inside the burner compartment blower compartment for downflows To make electrical connections through the opposite side of the furnace the junction box must be relocated to the other side of the burner or blower compartment prior to making electrical connections To relocate the junction box follow the steps shown below NOTE Wire routing
117. sig 3 48 kPa 20 PROPANE GAS TANKS AND PIPING Ay warnine IF THE GAS FURNACE IS INSTALLED IN A BASEMENT AN EXCAVATED AREA OR CONFINED SPACE IT IS STRONGLY RECOMMENDED TO CONTACT A PROPANE SUPPLIER TO INSTALL A GAS DETECTING WARNING DEVICE IN CASE OF A GAS LEAK SINCE PROPANE GAS IS HEAVIER THAN AIR ANY LEAKING GAS CAN SETTLE IN ANY LOW AREAS OR CONFINED SPACES PROPANE GAS ODORANT FADE MAKING THE GAS UNDETECTABLE EXCEPT WITH A WARNING DEVICE A gas detecting warning system is the only reliable way to detect a propane gas leak Rust can reduce the level of odorant in propane gas Do not rely on your sense of smell Contact a local propane gas supplier about installing a gas detecting warning system If the presence of gas is suspected follow the instructions on Page 3 of this manual All propane gas equipment must conform to the safety stan dards of the National Board of Fire Underwriters NBFU Manual 58 For satisfactory operation propane gas pressure must be 10 inch WC at the furnace manifold with all gas appliances in operation Maintaining proper gas pressure depends on three main factors 1 Vaporization rate depending on temperature of the liquid and wetted surface area of the container or containers 2 Proper pressure regulation Two stage regulation is recommended for both cost and efficiency 3 Pressure drop in lines between regulators and between second stage regulator and th
118. stablished by the tables in National Fuel Gas Code NFPA 54 ANSI Z223 1 latest edition and in the National Standard of Canada CAN CSA B149 1 and CAN CSA B149 2 latest editions and amendments If the liner is too small or too large then the chimney must be relined Fix 4 6 DILUTION If gas fired appliances are to be vented into a clay tile liner a source of dilution air is required Dilution air cannot be obtained through Induced draft appliances Natural draft appliances with vent dampers Sufficient dilution air can ordinarily be obtained through the draft hood of a natural draft appliance only if the appliance s vent connector does not include a vent damper If dilution air will not be available the chimney must be relined Fix 4 CHECK 7 COMPLETE THE INSTALLATION If Checks 1 through 6 have been satisfactory and the liner is an acceptable size as determined by the tables in National Fuel 13 ELECTRICAL CONNECTIONS Gas Code NFPA 54 ANSI 2223 1 latest edition and in the National Standard of Canada CAN CSAB149 1 and CAN CSA B149 2 latest editions and amendments then the clay tile liner can probably be used as a vent for the gas appliances However the installer must keep in mind the following factors which may render the tile liner unsuitable for use as a vent e Extremely cold weather Long vent connectors Masonry chimneys with no air gap between the liner and the bricks I
119. system use the appropriate table in Appendix G in the latest edition of the National Fuel Gas Code ANSI 7223 1 and or CAN CSA B149 Installation Codes THERMOSTAT LOCATION In an area having good air circulation locate the thermostat about five feet high on a vibration free inside wall Do not install the thermostat where it may be influenced by any of the follow ing Drafts or dead spots behind doors in corners or under cabinets Hotor cold air from registers Radiant heat from the sun Lightfixtures or other appliances e Radiant heat a fireplace Concealed hot or cold water pipes or chimneys Unconditioned areas behind the thermostat such as an outside wall DRAFTS OR DEAD SPOTS BEHIND DOORS CORNERS UNDER CABINETS Thermostat Influences Consult the instructions packaged with the thermostat for mount ing instructions and further precautions COMBUSTION AND VENTILATION AIR REQUIREMENTS Aywarnine TO AVOID PROPERTY DAMAGE PERSONAL INJURY OR DEATH SUFFICIENT FRESH AIR FOR PROPER COMBUSTION AND VENTILATION OF FLUE GASES MUST BE SUPPLIED MOST HOMES REQUIRE OUTSIDE AIR BE SUPPLIED INTO THE FURNACE AREA Improved construction and additional insulation in buildings have reduced heat loss by reducing air infiltration and escape around doors and windows These changes have helped in reducing EXTERIOR MASONRY CHIMNEYS CATEGORY FURNACES ONLY heating cooling costs bu
120. t above parapet required when distance Chimney Wall or from walls or parapet is Parapet more than 10 feet 4 More than 10 Height above any roof surface within 4 10 9 0 feet horizontally Ridge 2 Min Chimney EN Termination More Than 10 Feet From Ridge Wall or Parapet 2 ANY or FUEL APPLIANCES VENTED INTO THIS CHIMNEY CHANNEL Solid fuel appliances include fireplaces wood stoves coal fur naces and incinerators 12 EXTERIOR MASONRY CHIMNEYS CATEGORY l FURNACES ONLY Liquid fuel appliances include oil furnaces oil fired boilers and oil fired water heaters Appliances which burn propane sometimes referred to as LP liquefied petroleum gas are considered gas fired appliances CHECK 3 CHIMNEY CROWN CONDITION Damage from condensate usually shows up first in the crown If any of the following trouble signs are present the condition of the crown is not satisfactory Crown leaning Bricks missing Mortar missing Tile liner cracked No tile liner Salt staining at mortar joints White stains and mortar becomes sandy and or erodes gt ZT gt For problems a b or c see Fix 3 If problems d e or f are present see Fix 4 IMPORTANT It may be necessary to follow both Fix 3 and Fix 4 4 DEBRIS IN CLEANOUT A cleanout dropleg must be present such that the upper edge of the cleanout cover is at
121. t have created a problem supplying combustion and ventilation air for gas fired and other fuel burn ing appliances Appliances that pull air out of the house clothes dryers exhaust fans fireplaces etc increase the problem by starving appliances for air House depressurization can cause back drafting or improper combustion of gas fired appliances thereby exposing building occupants to gas combustion products that could include car bon monoxide If this furnace is to be installed in the same space with other gas appliances such as a water heater ensure there is an adequate supply of combustion and ventilation air for the other appliances Refer to the latest edition of the National Fuel Gas Code NFPA 54 ANSI 2223 1 or CAN CSA B149 Installation Codes or applicable provisions of the local building codes for determining the combustion air requirements for the appliances This furnace must use indoor air for combustion It cannot be installed as a direct vent i e sealed combustion furnace Most homes will require outside air be supplied to the furnace area by means of ventilation grilles or ducts connecting directly to the outdoors or spaces open to the outdoors such as attics or crawl spaces CArEGORY VENTING VERTICAL VENTING Aywarnine TO PREVENT POSSIBLE PERSONAL INJURY OR DEATH DUE TO ASPHYXIATION THIS FURNACE MUST BE CATEGORY VENTED DO NOT VENT USING CATEGORY III VENTING Category Venting is venting at a
122. t smell gas after five minutes move the furnace gas valve manual control to the ON position 8 Replace the burner compartment door 9 Open the manual gas shutoff valve external to the furnace 10 Turn on the electrical power to the furnace 11 Adjust the thermostat to a setting above room temperature 12 After the burners are lit set the thermostat to desired temperature FURNACE SHUTDOWN 1 Set the thermostat to the lowest setting The integrated control will close the gas valve and extinguish flame Following a 15 second delay the induced draft blower will be de energized After a 120 150 180 or 210 second delay period field selectable delay OFF 90 120 150 180 plus 30 second ramp down the circulator blower de energizes 2 Remove the burner compartment door and move the furnace gas valve manual control to the OFF position 3 Close the manual gas shutoff valve external to the furnace 4 Replace the burner compartment door Gas SuPPLY PRESSURE MEASUREMENT caution TO PREVENT UNRELIABLE OPERATION OR EQUIPMENT DAMAGE THE INLET GAS SUPPLY PRESSURE MUST BE AS SPECIFIED ON THE UNIT RATING PLATE WITH ALL OTHER HOUSEHOLD GAS FIRED APPLIANCES OPERATING The line pressure supplied to the gas valve must be within the range specified below The supply pressure can be measured at the gas valve inlet pressure boss or at a hose fitting installed in the gas piping drip leg The supply pressure must be mea sured
123. t up and adjustment items refer to further information in Operational Checks sec tion HEAT ANrICIPATOR SETTING The heat anticipator in the room thermostat must be correctly adjusted to obtain the proper number of cycles per hour and to prevent overshooting of the setting Set the heat anticipator setting to 0 7 amps Follow the thermostat manufacturer s instructions on how to adjust the heat anticipator setting FURNACE OPERATION Purge gas lines of air prior to startup Be sure not purge lines into an enclosed burner compartment Check for leaks using an approved chloride free soap and wa ter solution an electronic combustible gas detector or other approved method Verify that all required kits propane gas high altitude etc have been appropriately installed FURNACE STARTUP 1 Close the manual gas shutoff valve external to the furnace 2 Turn off the electrical power to the furnace 3 Set room thermostat to the lowest possible setting 4 Remove the burner compartment door NOTE This furnace is equipped with an ignition device which lights the burner Do try to light the burner by and 5 Move the furnace gas valve manual control to the OFF position 6 Wait five minutes then smell for gas Be sure check near the floor as some types of gas are heavier than air 7 f you smell gas after five minutes immediately follow the Safety Instructions on page 2 of this manual If you do no
124. tration page Product limited warranty certificates for models currently in pro duction can be viewed at www goodmanmfg com www amana hac com If your model is not currently in production or does not appear on the website please contact your installing con tractor or contact customer service at 877 254 4729 to obtain a copy of your warranty certificate Each product overview page contains a Product Warranty link by clicking on it you will be able to view the limited warranty coverage for that specific product To view warranty registration information click on the Product Warranty text on the left navi gation panel on the home page of each website The Online Product Registration pages are located in this same section A WARNING TO PREVENT PROPERTY DAMAGE PERSONAL INJURY OR DEATH DUE TO FIRE DO NOT INSTALL THIS FURNACE IN A MOBILE HOME TRAILER OR RECREATIONAL VEHICLE DESCRIPTION FEATURES This furnace is a part of the ComfortNet family of products The 1 ComfortNet thermostat kit allows this furnace to be installed as part of a digitally communicating system The ComfortNet system provides automatic airflow configuration enhanced setup features and enhanced diagnostics It also reduces the number of thermostat wires to a maximum of four It may be also installed as part of a legacy system using a standard 24 VAC thermostat This product may also be installed with the ComfortNet t
125. ug Honeywell valve or screw White Rodgers valve Bubbles forming indicate leak SHUT OFF GAS AND REPAIR ALL LEAKS IMMEDIATELY NOTE For gas to gas conversion consult your dealer for appropriate conversion LC TW 57 39 wc 35 6 0 w c Low Stage 5 7 6 3 w c Stage 9 7 10 3 10 0 w c Gas INPUT RATE MEASUREMENT NATURAL Gas ONLY The gas input rate to the furnace must never be greater than that specified on the unit rating plate To measure natural gas input using the gas meter use the following procedure 1 Turn OFF the gas supply to all other gas burning appliances except furnace 2 While the furnace is operating time and record one complete revolution of the smallest gas meter dial 3 Calculate the number of seconds per cubic foot sec ft of gas being delivered to the furnace If the dial is a one cubic foot dial divide the number of seconds recorded in step 2 by one Ifthe dial is a two cubic foot dial divide the number of seconds recorded in step 2 by two 25 START UP PROCEDURE AND ADJUSTMENT 4 Calculate the furnace input in BTUs per hour BTU hr Input equals the sum of the installation s gas heating value and a conversion factor hours to seconds divided by the number of seconds per cubic foot The measured input must not be greater than the input indicated on the unit rating plate EXAMPLE Installation s gas heating va
126. ump Heating Only Heat Pump Furnace Auxiliary Heating Continuous Fan Furnace Non Comm 1stg Air Conditioner Continuous Fan In continuous fan mode the thermostat provides the airflow demand The thermostat may be configured for a low medium or high continuous fan speed The low medium and high fan speeds correspond to 25 50 and 75 respectively of the furnaces maximum airflow capabil ity During continuous fan operation the thermostat sends a fan request along with the continuous fan demand to the furnace The furnace in turn sends the demand to the ECM motor The ECM motor delivers the requested continuous fan airflow 29 COMFORTNET SYSTEM FossiL FUEL APPLICATIONS This furnace can be used in conjunction with ComfortNet com patible heat pump in a fossil fuel application A fossil fuel applica tion refers to a combined gas furnace and heat pump installation which uses an outdoor temperature sensor to determine the most cost efficient means of heating heat pump or gas furnace When used with the thermostat the furnace heat pump system is automically configured as a fossil fuel system The balance point temperature may be adjusted via the CTKO1AA thermostat advanced user menus see CTKO1AA instructions for additional information CTK01AA WIRING NOTE Refer to Electrical Connections for 115 volt line connections to the furnace NOTE Aremovable plug
127. upplied by the installer most cases the installer may also need to supply a transition piece from 12 to another pipe size When the gas piping enters through the right side of the furnace the installer must supply the following fittings start ing at the gas valve e Close Nipple 90 Degree Elbow Straight Pipe to Reach Exterior of Furnace Gas PIPING CHECKS Before placing unit in operation leak test the unit and gas con nections A varie TO AVOID THE POSSIBILITY OF EXPLOSION OR FIRE NEVER USE MATCH OR OPEN FLAME TO TEST FOR LEAKS Check for leaks using an approved chloride free soap and wa ter solution an electronic combustible gas detector or other approved testing methods TO PREVENT PROPERTY DAMAGE OR PERSONAL INJURY DUE TO FIRE THE FOLLOWING INSTRUCTIONS MUST BE PERFORMED REGARDING GAS CONNECTIONS PRESSURE TESTING LOCATION OF SHUTOFF VALVE AND INSTALLATION OF GAS PIPING NOTE Never exceed specified pressures for testing Higher pressure may damage the gas valve and cause subsequent overfiring resulting in heat exchanger failure Disconnect this unit and shutoff valve from the gas supply pip ing system before pressure testing the supply piping system with pressures in excess of 1 2 psig 3 48 kPa This unit must be isolated from the gas supply system by clos ing its manual shutoff valve before pressure testing of gas sup ply piping system with test pressures equal to or less than 1 2 p
128. urnace awaits next call from thermostat OPERATIONAL CHECKS The burner flames should be inspected with the burner com partment door installed Flames should be stable quiet soft and blue dust may cause orange tips but they must not be yellow Flames should extend directly outward from the burn ers without curling floating or lifting off Flames must not impinge on the sides of the heat exchanger firing tubes 35 TROUBLESHOOTING amp MAINTENANCE Check the burner flames for 1 Good adjustment 2 Stable soft and blue 3 Not curling floating or lifting off Burner Flame SAFETY CIRCUIT DESCRIPTION number of safety circuits are employed to ensure safe and proper furnace operation These circuits serve to control any potential safety hazards and serve as inputs in the monitoring and diagnosis of abnormal function These circuits are con tinuously monitored during furnace operation by the integrated control module INTEGRATED CONTROL MODULE The integrated control module is an electronic device which if a potential safety concern is detected will take the necessary precautions and provide diagnostic information through an LED PRIMARY LIMIT The primary limit control is located on the partition panel and monitors heat exchanger compartment temperatures It is normally closed electrically automatic reset temperature ac tivated sensor The limit guards against overheating as a result of insufficient c
129. will result if these switches are not correctly set The table below indicates the switch position for the bias and termina tion dipswitches along with the expected voltages Note that the ON position is the correct position for all bias and termination dipswitches OFF ON 1 2 BIAS 3 Indoor Unit BIAS and TERMINATION Dipswitches The ComfortNet system is a fully communicating system and thus constitutes a network Occasionally the need to trouble shoot the network may arise The integrated furnace control has some on board tools that may be used to troubleshoot the network These tools are red communications LED green receive Rx LED and learn button Red communications LED Indicates the status of the network The table below indicates the LED status and the corresponding potential problem e Green receive LED Indicates network traffic The table below indicates the LED status and the corresponding potential problem Learn button Used to reset the network Depress the button for approximately 2 seconds to reset the network SvsrEM TROUBLESHOOTING NOTE Refer to the instructions accompanying the CT compatible outdoor AC HP unit for troubleshooting information Refer to the Troubleshooting Chart in the Appendix for a listing of possible furnace error codes possible causes and correc tive actions 33 OPERATIONAL CHECKS amp SAFETY CiRCUIT DESCRIPTION
130. with the burners operating To measure the gas supply pressure use the following procedure 23 START UP PROCEDURE AND ADJUSTMENT 5 INLET gt OUTLET OF Gas Valve On Off Selector Switch White Rodgers Model 36G54 Two Stage Manometer Open to Hose Atmosphere High Fire Regulator Outlet Adjust Pressure Boss Regulator Vent E 6 4 A gt VS Low Fire Regulator E 2 IS DOU Adjust Pressure id High Fire Coll igh Fire Coaxial Coil Ma t Terminal HI Terminal M On Off Switch Common Terminal C White Rodgers Model 36G54 Connected to Manometer High Fire Regulator Regulator Vent Adjust os e 9 OFF Gas Valve On Off I UE Selector Switch Adjust Honeywell Model VR9205 Two Stage Common Terminal C High Fire Coil Terminal Low Fire Coil Terminal LO Manometer Hose Open to Atmosphere
131. zing a trunk line be sure to include all appliances which will operate simultaneously The gas piping supplying the furnace must be properly sized based on the gas flow required specific gravity of the gas and length of the run The gas line installation must comply with local codes or in their absence with the latest edition of the National Fuel Gas Code 54 ANSI 2223 1 Natural Gas Capacity of Pipe In Cubic Feet of Gas Per Hour CFH Length of Nominal Black Pipe Size Pipe in Feet 1 2 1 1 2 10 132 1600 20 92 1100 30 73 980 40 63 760 50 56 670 60 50 610 70 46 560 80 43 530 90 40 490 100 38 460 Pressure 0 5 psig or less and pressure drop of 0 3 W C Based on 0 60 Specific Gravity Gas BTUH Furnace Input Heating Value of Gas BTU Cubic Foot CFH To connect the furnace to the building s gas piping the installer must supply a ground joint union drip leg manual shutoff valve and line and fittings to connect to gas valve In some cases the installer may also need to supply a transition piece from 1 2 pipe to a larger pipe size The following stipulations apply when connecting gas piping Use black iron or steel pipe and fittings for the building piping Use pipe joint compound on male threads only Pipe joint compound must be resistant to the action of the fuel used Use ground joint unions Install a drip leg to trap dirt and moisture before it can enter the

Goodman Mfg VC8 User's Manual

Contents

Download Pdf Manuals

Related Search

Related Contents