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P/N: MG-511 (Printed Instruction Manual) Note: This

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4. Static Pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 81 83 85 90 90 106 119 ML 65 66 69 72 76 80 87 MH 52 55 56 59 61 64 69 High 45 46 48 50 52 55 59 Speed Tap Blower Motor Current Draw Amps vs External Static pressure in WC Static Poar The oe a pe ae a Sle a eee el Pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 3 1 3 0 2 9 2 8 2 7 2 6 2 5 ML 3 9 3 8 3 6 3 5 3 3 3 2 3 1 MH 48 4 6 4 4 4 2 4 1 4 0 3 8 High 5 7 5 5 5 4 5 2 5 1 5 0 4 8 Speed Tap Blower Motor Watts vs External Static pressure in WC Static Pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 312 303 298 291 280 273 264 ML 400 390 381 366 354 342 330 MH 513 490 478 462 447 432 413 High 624 605 591 573 556 542 522 Recommended operation range 31 All installations and services must be performed by qualified service personnel ANWARNING TURN OFF THE ELECTRICAL POWER to the furnace before attempting to change blower speed wiring The furnace is factory wired to the ignition control with standard heating and cooling speeds When changing motor speeds simply switch the needed speed to either the heating or cooling terminal as applicable on the module to obtain the desired CFM The unused speeds should then be reconnected to the module in the park positions Refer to figure 15 Refer to section for blower speed and air flow performance for A C installat
5. 330140 6 0330140 22 51 All installations and services must be performed by qualified service personnel APPENDIX WIRING DIAGRAM 10841NO9 TWNH3INI NO SNONNILNOI 291 59 05 4 TOMLNOD 2 dv 80 IV NOIVdIOLINV 135 lN3S3Hd 38 Q100HS ON N3HM 03535 HS 14 SNOANILNOD 0 YO S3HSV4 8 2 70 801 IS IV 30 Y TWIYILYN TG enas NU 07 5 ST RO UN dG ae 9 ISIN AML NO HOLMS 292 3 a a N3d0 YOMLS HOLMS IANASSIHd 93913 B
6. 50054178 50054178 294 J BOX COVER V350020 V350020 4A BLOWER HOUSING wN WHEEL V340042 V340042 298 RADIATOR HOSE V410017 2 V410017 2 4B OTOR BRACKET ASSEMBLY VAOPS7670 VAOPS7670 29C HOSE CLAMP V300276 4 V300276 4 4C OTOR 350573 VAOPS7657 VAOPS7657 29D CPVC X PVC ADAPTER 320833 V320833 4D CAPACITOR BOOT 550036 350036 29E LP CONVERSION KIT VAOPS7727 VAOPS7728 4E CAPACITOR V350073 350073 30 J BOX V350024 V350024 AUX LIMIT SWITCH V350891 350891 31 PRESSURE SWITCH V350498 V350498 46 INTEGRATED FAN CONTROL V350836 V350836 32 LIMIT SWITCH V350495 V350817 4H TRANSFORMER V350464 V350464 33 VESTIBULE WIRE HARNESS V350195 V350195 4 BLOWER HARNESS V350781 V350781 34 SUPPLY WIRE HARNESS V350893 V350893 5 BURNER DRAWER ASSEMBLY 50058219 50058216 35 GROUND WIRE HARNESS V350892 V350892 5A BURNER TUBE V380595 2 V380595 5 36 TUBING ASSEMBLY VS0084110 VS0084110 5B ANIFOLD V380726 V3806 70 37 DOOR SWITCH V350139 350139 56 ORIFICE 380600 2 380600 5 38 CASING REAR 619031 619031 5D GROMMET V360434 360434 39 BAFFLE AIR SIDE V18979 V18935 5E GAS VALVE VAOPS 7674 VAOPS7674 40 DRAIN FITTING 320915 320913 6 BURNER BOX ASSEMBLY 50058218 50058215 41 TRAP BRACKET V19053 V19053 6A LIMIT SWITCH ROLL OUT 350485 350485 6B SIGHT GLASS GASKET 330135 V530135 6C SIGHT GLASS V15887 V15887 6D SILICONE SPONGE GASKET 1 2 V330141 9 V330141 24 6E SILICONE SPONGE GASKET 1
7. BLOWER OPERATING ACROSS TH amp TR AT THE INTEGRATED wie CONNECTIONS CONTROL MODEL 45 All installations and services must be performed by qualified service personnel Yes DOES THE HOT SURFACE IGNITOR ENERGIZE AND GLOW Yes Y AFTER HOT SURFACE IGNITOR WARM UP DOES GAS VALVE OPEN Yes IS THERE LINE VOLTAGE ACROSS INDUCER POWER TERMINALS IND amp IND N AT THE INTEGRATED CONTROL CHECK WIRING TO INDUCER AND IF OK REPLACE INDUCER ASSEMBLY CHECK THE INTEGRATED CONTROL DIAGNOSTIC LED LAMP RESET BY INTERRUPTING POWER TO CONTROL FOR MORE THAN ONE SECOND IF LED STAYS ON CONTINUOUSLY REPLACE INTEGRATED CONTROL IS THERE VOLTAGE PRESENT No AT THE HOT SURFACE IGNITOR TERMINALS IGN amp IGN N AT THE INTEGRATED CONTROL I CHECK THE INTEGRATED CONTROL DIAGNOSTIC LED LAMP RESET BY INTERRUPTING POWER TO CONTROL FOR MORE THAN ONE SECOND IF LED STAYS ON CONTINUOUSLY REPLACE INTEGRATED CONTROL CHECK WIRING TO HOT SURFACE IGNITOR AND IF OK REPLACE HOT SURFACE IGNITOR ASSEMBLY CHECK ACROSS Mv TERMINALS ON INTEGRATED CONTROL FOR 24 VOLTS DURING THE 4 SECOND FLAME PROVING IS THERE 24VOLTS Yes CHECK WIRING TO GAS VALVE AND IF OK REPLACE GAS VALVE 46 PERIOD AFTER IGNITOR WARMUP Mo SAME AS ABOVE All installations and
8. FURNACE AT THE DISCONNECT OR INTERRUPTING THE CALL FOR HEAT AT THE THERMOSTAT IF THIS DOES NOT RESTART THE SYSTEM REFER TO THE TROUBLESHOOTING SECTION OF THIS MANUAL 34 All installations and services must be performed by qualified service personnel B INITIAL START UP This furnace does not have a pilot It is equipped with a hot surface igniter which automatically lights the burner Do not attempt to light the burner by hand Check the following items before the initial start up 1 Check all wiring for loose connections and proper hook up 2 Leak test gas piping connections 3 Check all tubing to the pressure switch and drains to make sure they are connected firmly at all their connection points 4 Check flue pipe combustion air inlet and all pvc connections for tightness and to make sure there is no blockage 5 Make sure air filter is in place 6 Make sure the outside vent and air intakes are installed according to instructions and that they are free from blockage 7 Make sure that the drain trap is properly connected to the furnace and to the drain system OPERATING INSTRUCTIONS AWARNING Turn off power to furnace before it is placed into service The gas piping system must have been leak tested by a qualified heating contractor in accordance with State Local and National Codes including the National Fuel Gas Code NFPA 54 ANSI Z233 1 Latest Edition AWARNING It may be necessary to purge the air
9. Shut off gas and disconnect power before continuing B GENERAL INSPECTION 1 VENT PIPE COMBUSTION AIR INTAKE a Remove the vent and check the vent for signs of carbon build up and for signs of blockage b The entire length of vent and combustion air inlet pipe and their terminations should be inspected for restrictions loose or loosely sealed joints carbon build up Also inspect the outside vent and combustion air terminals and ensure that they are clear and unobstructed 2 CONDENSATE LINE TRAP ASSEMBLY The condensate line must be inspected to make sure it is not blocked All of the lines should be flushed with water to remove any build up of sediment 3 BURNERS If it appears that material is accumulating in the burner box the burner box cover can be removed and the box and burners can be vacuumed NOTE The igniter amp flame sensor must be removed before removing the assembly If necessary the burners assembly can be removed by taking out the two screws one on each bracket on the bottom of the box on VMA s or on top of the box and removing the burner drawer assembly Assembly must be pulled amp tilted away from the blower compartment in order to remove from box If necessary the individual tubes can be cleaned out using compressed air to blow out the individual tubes Care must be taken not to damage the igniter 4 INDUCER BLOWER ASSEMBLY Inspect the pressure switch and drain tubing connections and inspect the blower
10. The VMA furnace venting system must be installed by a qualified service person in accordance with local codes the National Fuel Gas Code NFPA 54 ANSI 2223 1 Latest Edition and these instructions The following items and local code requirements must be followed 1 The vent air intake terminations outlined in this manual must be used 2 The entire vent air intake system must be made of PVC Schedule 40 pipe except for the concentric vent kit NOTE All VMA furnaces must be installed with outside combustion air 3 The flue vent pipe and combustion air pipe must be at least as large as the exhaust vent air intake pipe specified in this manual No reduction in size is permissible The VMA requires 2 Schedule 40 PVC pipe 4 This VMA furnace shall not be common vented with any other appliance including those burning solid fuels 5 The maximum permissible vent length of straight pipe and number of elbows permitted for the exhaust vent and combustion air inlet is shown in Table 2 The elbows shown are in addition to the length of straight pipe permitted When counting elbows all elbows used in the exhaust vent or combustion air intake must be counted This includes elbows used inside the furnace jacket and termination elbows Care should be taken to plan out the vent system to be as short as possible but not shorter than 8 ft and to contain as few elbows as possible to insure the best possible operation of the furnace 16 All
11. This furnace is equipped with orifices sized for operation with natural gas For conversion to Propane Gas see instruction MG 814 in Gas Conversion Kit supplied with furnace 3 These Category Type IV furnaces are shipped completely assembled and wired internally See the Dealer Receiving and Freight Claim Procedure Section of the price guide for parts shortage or damage The furnace and duct system must be adjusted to obtain a temperature rise of 40 F to 70 F through the furnace after installation See rating label located on separator panel inside the furnace vestibule The installation must conform with local codes or in the absence of local codes with the National Fuel Gas Codes ANSI Z223 1 or latest edition and with these instructions AWARNING This furnace is not to be used for temporary heating of buildings or structures under construction Many of the chemicals used during construction when burned form acid bearing condensate that can substantially reduce the life of the heat exchanger 4 t is recommended that a commercially available CO alarm be installed in conjunction with any fossil fuel burning appliance The CO alarm shall be installed according to the alarm manufacturers installation instructions and be listed in All installations and services must be performed by qualified service personnel accordance with the latest edition of the UL Standard for Single and Multiple Station Carbon Monoxide Alarms UL 2034 or
12. 2 0 3 0 4 0 5 0 6 0 7 Low 53 55 57 59 63 71 78 ML 42 44 45 48 51 53 59 MH 35 37 38 40 42 45 49 High 31 33 34 36 38 41 44 Speed Tap Blower Motor Current Draw Amps vs External Static pressure in WC Static Pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 3 3 3 2 3 1 3 0 2 9 2 7 2 6 ML 4 0 3 8 3 6 3 5 3 4 3 2 3 1 MH 46 4 4 4 2 4 1 4 0 3 8 3 6 High 5 3 5 1 5 0 4 9 4 7 4 6 4 4 Speed Tap Blower Motor Watts vs External Static pressure in WC Static Pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 315 311 304 300 292 281 275 ML 400 390 376 363 351 342 330 MH 485 467 452 441 427 412 394 High 573 555 544 530 513 493 477 Recommended operation range 30 All installations and services must be performed by qualified service personnel VMA1 75 ALTERATIONS REQ D FOR DESIGN EXTERNAL STATIC PRESSURE COOLING UNIT HTG Speed Recommended CLG Speed 24 000 MED LOW MED LOW 30 000 MED LOW MED HIGH 36 000 MED LOW HIGH Speed Tap Furnace Airflow CFM vs External Static pressure in WC Static Pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 817 797 773 730 668 620 555 ML 1019 995 959 918 869 821 760 MH 1257 1210 1174 1125 1076 1024 959 High 1470 1420 1366 1312 1259 1196 1127 Speed Tap Temperature Rise vs External Static Pressure in WC
13. Complete the assembly of the outlet and 23 All installations and services must be performed by qualified service personnel inlet as shown in Figure 10 making sure that the spacing between the inlet and outlet complies with that noted in Figure 8 PREGLUED SECTION OF PVC PIPE W COUPLING NOTE PVC PIPE LENGTH APPROX THICKNESS OF WALL PREGLUED SECTION OF PVC PIPE W ELBOW NOTE PVC PIPE LENGTH APPROX THICKNESS OF WALL 60 PVC ELBOW EN PVC T ES COUPLINGS E COUPLINGS NC PVC PIPE M EXTERIOR WALL EXTERIOR WALL PVC ELBOW TYPICAL INSTALLATION USING ELBOWS TYPICAL INSTALLATION USING COUPLINGS FLUSH AGAINST THE EXTERIOR WALL FLUSH AGAINST THE EXTERIOR WALL Figure 10 Typical Construction Details of Sidewall Vent and Air Intake Terminations 3 Finish the vent installation by caulking the annulus to seal around the two 2 holes where the thermoplastic pipes pass through the wall 4 To prevent foreign material insects or small animals from entering the pipes an optional vent or intake terminal stainless steel screen is available from the furnace manufacturer part no V320219 J CONNECTING THE FURNACE TO ROOF VENT AIR TERMINATIONS The VMA is designed to be vented with either a concentric vent assembly or twin 2 pvc stacks The concentric vent VAOPS7515 can be vented through the ceiling roof either thru the existing roof jack or thru the 3 ceiling roof
14. Walkway Front View of a Typical Single Story House Plan View of an L Shaped House LEGEND VJ Vent terminal Air supply inlet Vent terminal installation prohibited within this region Dimension Clearance Definition Requirement for US Installations Distance above grade veranda porch deck or balcany 12 inches B Distance to window or door that may be opened 12 inches C Distance to permanently closed window 12 inches D Distance to ventillated soffit located above the terminal within a horizontal 24 inches distance of 2 feet from the centerline of the terminal E Distance to unventilated soffit 24 inches E Distance to outside corner 24 inches G Distance to inside corner OU tepi oer H Distance to each side of centerline extended above meter regulator feet assembly Distance to service regulator vent outlet 4 feet Distance to nonmechanical air supply inlet to building or the combustion 12 inches air inlet to any other appliance Distance to mechanical air supply inlet 5 feet above if within 10 feet horizontally Distance above paved sidewalk or paved driveway located on public property 7 feet Distance below veranda porch deck or balcany 24 inches n accordance with the current edition of the National Fuel Gas Code ANSI Z223 1 NFPA 54 n non direct vent applications i e sidewall venting only the required clearance is 4 feet below or to the side of the opening 1 foot above o
15. alteration service or maintenance can cause injury or property damage Refer to this manual For assistance or additional information consult a qualified installer service agency or fuel supplier AWARNING Do not use this appliance if any part has been underwater Immediately call a qualified service technician to inspect the appliance and to replace any part of the electrical or control system that has been underwater PLEASE READ THESE INSTRUCTIONS PRIOR TO INSTALLATION INITIAL FIRING AND BEFORE PERFORMING ANY SERVICE OR MAINTENANCE THESE INSTRUCTIONS MUST BE LEFT WITH THE USER AND SHOULD BE RETAINED FOR FUTURE REFERENCE BY QUALIFIED SERVICE PERSONNEL ppm STYLE CREST INC 2450 ENTERPRISE STREET 8 ia ud CERTIFIED FREMONT OH 43420 5 PHONE 419 332 7369 Listeo MG 511 5248 120307 MADE IN USA TABLE CONTENTS SECTION BEGINNING PAGE SAFETY INFORMATION 1 Il FURNACE SPECIFICATIONS 6 1 GENERAL INSTRUCTIONS AND CLEARANCES 7 IV GENERAL INSTALLATION 9 A FURNACE LOCATION 9 B BASE INSTALLATION 12 C ALCOVE INSTALLATION 13 D CLOSET INSTALLATION 14 E FUEL PIPING 15 F GENERAL VENTING REQUIREMENTS 16 G CONNECTING THE EXHAUST VENT AND COMBUSTION 18 AIR INTAKE H DIRECT VENTING THROUGH A SIDEWALL 19 INSTALLATION OF OUTSIDE EXHAUST INTAKE TERMINATIONS 23 J CONNECTING THE FURNACE TO ROOF VENT INTAKE TERMINATIONS 24 K CONDENSATE DRAIN LINE AND TRAP ASSEMBLY 26 L ELECTRICAL WIRING 2
16. applications must comply with the requirements of this manual All installations and services must be performed by qualified service personnel Combustible Floor Base Model V70 BASE CONNECTOR DUCT 12x12x14 Figure Coil Cabinet Model VE113S VE213T Note Coil Cabinet cannot be utilized as a cottage base 24 3 8 19 7 8 VE113S VE213T Figure 1B 10 All installations and services must be performed by qualified service personnel Cottage Base Model VCOT BASE Figure 1C NOTE Serves as a plenum for single story applications with exposed supply air systems 11 All installations and services must be performed by qualified service personnel B BASE INSTALLATION 1 Combustible Floor Base Model V70 BASE Use the base bottom panel as a template to mark floor opening locations see Figure 2 Cut a square opening in the floor for the supply air connector duct Cut the opening 1 inch larger than the square template opening duct requires 1 inch clearance to combustible floor REAR WALL OF CLOSET OR ALCOVE REAR WALL OF CLOSET OR ALCOVE CONNECTOR DUCT FLOOR CUTOUT CONNECTION CONNECTOR a l POINT DUCT o 1 8 MEL ENE INTAKE ENT
17. burners IMPORTANT Remove flue outlet blockage when done 4 Block the PVC pipe inlet gradually with a flat piece of metal until pressure switch functions shutting off the main burners IMPORTANT Remove air inlet blockage when done 5 Remove the blower compartment access door with the furnace operating The door interrupt switch is in the 120 volt circuit and will shut down the entire system Replace the blower door and the furnace start up cycle will begin 39 All installations and services must be performed by qualified service personnel VI INSTALLER S INSTRUCTIONS TO USER After completing the installation the installer shall inform and or demonstrate to the homeowner 1 The location of all the instructions in the furnace and that the instructions must be kept along with instructions for any accessories in the plastic pouch 2 The location and use of the manual gas shut off valve and furnace electrical disconnect switch Instruct user to always shut off gas before shutting off electric power 3 The sequence of operation of the furnace 4 The correct operation and maintenance of the appliance as outlined in this manual 5 That failure to maintain and operate this furnace in accordance with these instructions could result in hazardous conditions bodily injury property damage and may void the limited warranty on the furnace 6 Review with and encourage the user to read the label reproductions and all warnings and
18. contain reproductions of the various safety and instruction labels placed on the Condensing Gas Furnaces Please read and comply with the contents of these labels TER Tay ALIS AMD CERTIFIED us www ahridirectory org 3018528 MODEL NO SERTAL 00000000 PSU TECTUM NC FOR INSTALLATION IN MANUFACTURED HOME DATE OF MANUFACTURE 29 NOV 2011 FOR INSTALLATION AS CENTRAL FURNACE SPECIAL TYPE FOR SINGLE STORY DWELLING ORIFICE LINE PRESSURE IN W C MANIFOLD FUEL TYPE BTUH INPUT DRILL SIZE MIN MAX PRESSURE IN W C NAT 42 4 5 14 0 3 5 INCHES W C L P 1 5 MM 11 0 14 0 10 0 INCHES W C APPLIANCE IS SHIPPED FROM FACTORY WITH 42 ORIFICES FOR NATURAL GAS FOR L P GAS CONVERSION REFER TO INSTRUCTION MANUAL PROVIDED WITH THIS APPLIANCE INSTALLATION APPLIANCE MAY BE INSTALLED IN A CLOSET OR ALCOVE WITH MINIMUM CLEARANCES TO ADJACENT COMBUSTIBLE CONSTRUCTION OF NOT LESS THAN 6 INCHES AT FRONT OF CLOSET 18 INCHES AT FRONT OF ALCOVE 0 INCH AT BACK INCH AT SIDES 0 INCH FROM FLUE PIPE 0 INCH FROM TOP OF APPLIANCE TO CEILING 1 INCH FROM PLENUM SIDES AND WARM AIR DUCT WITHIN 3 FEET OF APPLIANCE FOR CLOSET INSTALLATION A 250 SQ IN RETURN AIR OPENING MUST BE PROVIDED IN THE CLOSET DOOR SEE INSTRUCTION MANUAL FOR LOCATION DETAILS THIS TYPE FSP APPLIANCE MAY BE INSTALLED WITH A STYLE CREST INC MODEL V70 BASE ASSEMBLY SEE INSTRUCTION MANUAL FOR DETAILS ON INSTALLATION OF BASE THIS FURNACE REQUIRES A S
19. furnace E SETTING TEMPERATURE RISE All VMA Models are designed and wired at the factory for a heating blower speed that should result in an approximate temperature rise of 60 F The blower motors are wired on med low speed for heating mode The temperature rise through the furnace may vary depending on the duct system elevation heating value etc for each installation A lower temperature rise will result in a higher efficiency Temperature rise supply air temperature return air temperature After 10 to 15 minutes of continuous operation the temperature rise through the furnace must fall within a range of 40 F to 70 F If the outlet or supply duct temperature is too high you should check to make sure that your return air filter is clean your return air openings are free from obstruction your outlet registers are properly adjusted and clear and your supply and return air ducts are open The circulating air blower is not moving enough air if the supply air temperature is still too high Before proceeding further turn off the power supply to the furnace and remove the front door of the unit The speed of the blower must be increased by changing the speed tap from the motor see figure 15 This is accomplished by locating the control panel attached to the blower housing and switching the blue med low blower lead which should be connected to the Heat terminal on the White Rodgers 50A65 143 38 All installations and serv
20. instructions in this manual 7 Recommend that the user have a qualified heating contractor inspect the furnace at the start of each heating season Inform the user of the frequency of inspection required for each component 8 Should the furnace not operate after installation note diagnostic code through view port prior to removing door Vil DEALER MAINTENANCE The following maintenance procedures should be performed at the beginning of each heating season by a qualified heating contractor Correct any deficiencies at once AWARNING Personal injury or property damage could result from repair or service of this furnace by anyone other than a qualified heating contractor AWARNING To avoid injury from moving parts shut off the power to the furnace before removing blower compartment door ANCAUTION Label wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation 40 All installations and services must be performed by qualified service personnel A ELECTRICAL 1 Check diagnostic code through view port prior to removing access door 2 Check all wiring for loose connections and any signs of damage or unusual wear 3 Check for correct voltage at the furnace when operating 4 Check amp draw on blower motor and inducer motor to assure they are not exceeding name plate amp rating 5 Check for correct operation and proper settings if manually adjustable of all controls
21. the CSA International Standard Residential Carbon Monoxide Alarming Devises CSA 6 19 5 The installer shall be familiar with and comply with all codes and regulations applicable to the installation of these heating appliances and related equipment In lieu of local codes the installation shall be in accordance with the current provisions of one or more of the following standards a Federal Manufactured Home Constructions amp Safety Standard H U D Total 24 Part 280 b American National Standard ANSI 119 2 NFPA 501C for all recreational vehicle installations c American National Standard ANSI Z223 1 NFPA 54 for all gas fired furnaces d American National Standard ANSI C1 NFPA 70 Electric Code for all electrical field wiring e These gas fired units have been investigated under standards ANSI Z 21 47 CAN CGA Z223 2001 Central Furnace test standards f These gas fired units have been listed by ETL For installation as central furnace special type for single story dwelling A WARNING The area around the furnace must be kept free and clear of combustible materials especially papers and rags ANWARNING This furnace is not to be used as a construction heater Listed below are definitions of COMBUSTIBLE MATERIAL and NON COMBUSTIBLE MATERIAL COMBUSTIBLE MATERIAL Material made of or surfaced with wood compressed paper plant fibers plastics or other material that will ignite NON COMBUSTIBLE MATERI
22. 0 thick foil faced fiberglass insulation or its equivalent to prevent freezing of any condensate within the pipe 10 Minimum clearance from the PVC pipe to combustible material is zero inches IMPORTANT The VMA furnace models are vented through the roof For roof venting refer to Section IV J of this manual 17 All installations and services must be performed by qualified service personnel CONNECTING THE EXHAUST VENT AND COMBUSTION AIR INTAKE Figure 6 shows the typical exhaust vent and combustion air intake connection for VMA furnace RADIATOR HOSE RADIATOR HOSE HOSE CLAMP 2 PLACES HOSE CLAMP 2 PLACES Oar RoW C NOTE 77 DRAIN FITTING INSTALL WITH ARROW POINTING UP Figure 6 VMA 75 SHOWN NOTICE The exhaust vent pipe must be supported every 4 feet After making sure the length of the piping is correct glue all connections in place ANWARNING This furnace has been designed to be installed as a direct vent system and must have its combustion air brought in from outside the conditioned space The failure to install the vent air intake system as specified in these instructions will void the heat exchanger warranty and may result in property damage personal injury or loss of life NOTICE The furnace model series VMA may be vented either through the sidewall or the roof For sidewall instructions continue to th
23. 2 IN MIN RADIUS ara lt 4 MIN 12 IN ABOVE HIGHEST lt d ANTICIPATED SNOW LEVEL P NS IN MIN 24 IN MAX du VERTICAL VENT TERMINATION installation Figure 11 VENT ES AIR INTAKE FLASHING PLATE SLOPE ADAPTER PREVAILING WINDS P a Figure 12 25 All installations and services must be performed by qualified service personnel When the PVC vent and combustion air intake pipes pass through a ceiling and a fire stop is required Refer to the following CEILING Frame out area around where PVC pipe is to penetrate ceiling Cut a 2 3 8 diameter hole for 2 PVC in the ceiling and a corresponding hole ina firestop to be made of a minimum of 18 gauge galvanized metal large enough to cover the entire framed area Cut PVC pipe so that it extends up past the fire stop far enough to engage a PVC coupling that will rest on the fire stop and act as a support Seal between the pipe coupling and fire stop with high temperature RTV silicone sealant see Figure 13 Continue installing PVC pipe to exhaust vent and combustion air intake termination as described previously ING VENTING THROUGH CE SEAL BETWEE COUPLING AND META ANEL FLUE PIP F WITH HI TEMP SILICONE E SEALANT COUPLING gt 18 GAUGE GALVANIZED El a PANEL FIRESTOP Figure 13 K CONDENS
24. 7 V STARTING THE UNIT 33 A SEQUENCE OF OPERATION 33 B INITIAL START UP 35 C ADJUSTMENT OF BTU INPUT RATE 36 D BURNER ADJUSTMENT 37 E SETTING TEMPERATURE RISE 38 F FURNACE CHECK OUT PROCEDURE 39 VI INSTALLER S INSTRUCTIONS TO USER 40 VII DEALER MAINTENANCE 40 A ELECTRICAL 41 B GENERAL INSPECTION 41 C HEAT EXCHANGER 42 D HOUSE AIR BLOWER 42 E RETURN AIR FILTER 42 VIII TROUBLE SHOOTING 43 APPENDIX A REPLACEMENT PARTS 50 APPENDIX B WIRING DIAGRAM 52 WARRANTY 53 REFERENCED PUBLICATIONS FOR COPIES CONTACT NATIONAL FUEL GAS CODE NATIONAL FIRE PROTECTION ASSOCIATION 54 ANSI Z2338 1 1 BATTERYMARCH PARK LATEST EDITION P O BOX 9101 QUINCY MA 02269 9101 All installations and services must be performed by qualified service personnel 1 SAFETY INFORMATION This and the following page contain reproductions of the various warning and instruction labels placed on the Condensing Gas Furnaces Please read and comply with the contents of these labels CAUTION MOVING PARTS CAN CAUSE SEVERE PERSONAL INJURY SHUT OFF FURNACE BEFORE THIS PANEL PROPERTY DAMAGE PERSONAL INJURY OR LOSS OF LIFE FILTER MAINTENANCE WHEN IT BECOMES NECESSARY MANUAL PROVIDED WTH THIS FURNACE FOR DETAILS DO NOT ATTEMPT TO MAKE REPAIRS YOURSELF SPECIAL HOMEOWNERS INSTRUCTIONS IMPROPER INSTALLATION ADJUSTMENT ALTERATION SERVICE OR MAINTENANCE CAN CAUSE FOR SAFE OPERATION IT IS THE RESPONSI
25. AL Material that will not ignite and burn Such materials consist entirely of steel iron brick tile concrete slate glass or a plaster combination thereof All installations and services must be performed by qualified service personnel MODELSVMA CLOSET ALCOVE FRONT BACK SIDES VENT CONNECTOR PVC TOP PLENUM SIDES TOP AND SIDES OF DUCT BOTTOM OF DUCT Table 1 This heating appliance must be installed with clearances not less than the minimums shown above as well as ample clearance for easy access to the air filter blower assembly burner assembly controls and vent connections IV GENERAL INSTALLATION A FURNACE LOCATION 1 For best performance locate the furnace so that it is centralized with respect to the duct system 2 The furnace installation is only intended for free air return through the furnace door louvers DO NOT connect a ducted return air system directly to the furnace An improper return air installation may create a hazard and damage equipment as well as void all warranties 3 This furnace may be installed on a combustible floor when utilizing either the No V70 BASE counterflow floor base or 1135 VE213T coil cabinet for below the floor duct systems or the cottage base for floor level air distribution See Figure 1A for description of Combustible Floor Base and Figure 1C for Cottage Base This furnace is ETL listed for closet alcove or free standing applications All
26. ATE DRAIN LINE AND TRAP ASSEMBLY 1 Figure 14 illustrates the typical drain trap connection for VMA furnace Trap will be installed at factory Connect condensate drain trap to building drain system 2 An optional condensate neutralizer kit P N V320095 is available when gas furnace condensate needs to be neutralized pH increased prior to discharge into drain system 26 All installations and services must be performed by qualified service personnel 3 An optional condensate pump P N V350225 is available This pump will not fit into the vestibule of the furnace and must be installed below the furnace for operation Instructions will be included with pump if this option is utilized DRAIN TRAP ASSEMBLY INSTALLER x CONNECTION ett TO DRAIN TRAP Q Figure 14 L ELECTRICAL WIRING All wiring shall be performed by a qualified electrician or service person The wiring must comply with local codes the instructions in this manual and in the absence of codes with the National Electrical Code ANSI NFPA 70 LATEST EDITION 1 Electrical Branch Supply Circuit Route all electrical wiring to the left side of the furnace The power supply circuit to the furnace must be installed and grounded in accordance with the provisions of the National Electrical Code ANSI NFPA 70 1999 o
27. BILITY OF THE OWNER AND OR USER THAT THE BURNER CHIMNEY VENT PIPE HEAT EXCHANGER AND CONTROLS SHOULD BE INSPECTED EVERY YEAR BY A QUALIFIED HEATING CONTRACTOR THE OWNER AND OR USER SHOULD ALSO CONDUCT PERIODIC VISUAL INSPECTIONS REFER TO THE USERS INFORMATION ANY DEFICIENCIES NOTED MUST BE CORRECTED AT ONCE BY A QUALIFIED HEATING CONTRACTOR FOR ASSISTANCE OR ADDITIONAL INFORMATION CONSULT A QUALIFIED INSTALLER SERVICE AGENCY OR THE GAS SUPPLIER FOR YOUR SAFETY WHAT TO DO YOU SMELL GAS 1 DO NOT TRY TO LIGHT ANY APPLIANCE 2 DO NOT TOUCH ANT BICAL SWITCH DO NOT USE ANY PHONE YOUR BULONG S Men CAL YOUR E FP Qe amu vernon 4 F YOU CANNOT REACH SPUER CALL TE DEPARTMENT FOR YOUR SAFETY THE UNT MUST BE INSTALLED AND SERVICED BY A QUALIFIED CONTRACTOR ONLY OPERATING INSTRUCTIONS ARE LOCATED INSIDE APPUANCE NEAR BURNER ASSEMBLY REINSTALL ALL PARTS Should this unit be disassembled all components panels block offs collars gaskets and fasteners must be reassembled as originally factory produced Failure to do so may result in property damage injury or loss of life THIS FURNACE MUST BE INSTALLED SO THERE ARE PROVISIONS FOR VENTILATING AIR 390410 ANWARNING Hozardous f
28. E IS DE ENERGIZED THE IGNITOR IS TURNED OFF AND THE CONTROL BOARD CONTROL GOES INTO RETRY SEQUENCE All installations and services must be performed by qualified service personnel MAIN BURNER OPERATION CALL FOR HEAT SATISFIED END OF CYCLE AFTER DELAY TO FAN ON PERIOD ENDS CIRCULATING AIR FAN IS ENERGIZED AT HEATING SPEED THE OPTIONAL ELECTRONIC AIR CLEANER AND HUMIDIFIER ARE ENERGIZED WHEN THERMOSTAT IS SATISFIED CONTACTS OPEN AND THE GAS VALVE IS DE ENERGIZED AFTER PROOF OF FLAME LOSS INDUCER STARTS 5 SECOND POST SURGE AND OPTIONAL HUMIDIFIER ARE DE ENERGIZED THE DELAY TO FAN OFF PERIOD BEGINS 120 SECONDS THE RETRY SEQUENCE PROVIDES A 60 SECOND WAIT BEFORE IGNITION RETRY RETRY IS ATTEMPTED WITH AN ADDITIONAL 10 SECONDS OF IGNITOR WARM UP TIME IF IGNITION ATTEMPT IS UNSUCCESSFUL ONE MORE RETRY WILL BE MADE BEFORE THE CONTROL BOARD GOES INTO SYSTEM LOCKOUT AFTER THE DELAY TO FAN OFF PERIOD ENDS IF FLAME IS DETECTED THEN LOST THE CONTROL BOARD WILL REPEAT THE INITIAL IGNITION SEQUENCE FOR A TOTAL OF SIX RECYCLES AFTER SIX UNSUCCESSFUL RECYCLE ATTEMPTS THE CONTROL WILL GO INTO SYSTEM LOCKOUT THE CIRCULATING AIR FAN AND OPTIONAL ELECTRONIC AIR CLEANER ARE DE ENERGIZED IF SYSTEM IS IN LOCKOUT THE MODULE WILL RESET ITSELF AFTER 60 MINUNTES OR MAY BE MANUALLY RESET BY INTERRUPTING THE POWER TO THE
29. ILLIS AYOLOWJs 300 20 MOT NOT Ji ie 1 28 08 A 4 QW MOT QM A01 5 9 N n MOT ON MOT OA A01 i Nn 00067 000 06 NOL 3svHd 1 7H 09 A SLL 2000 Fm o NOLLO3NNOO m OLVI3HOS S300 1 S9NILES 03345 EON JOVNYNI 3AOH FION S O 9NISN30NOO Avvia 91819313 09 QOM 52 All installations and services must be performed by qualified service personnel 82111 YIN ZEZS v 9 diz eyejs ANID ON EH98S ON SseJppy jo ejeq 5 diz eyeis AYO 69 L ZEE 6BLV Hd SseJppv HO u0u814 jeengs esudieju3 062 35915 9 1S SH3HLO SIH YSSVHOUNd JHL ASNSIW YO ASN SLI AO 5 JHL ALMIEGVNM TIY SSAWNSSV LNANdINOA SIHL JO YASVHOUNd JHL ANY ANIJ JO IWILNANODASNOD ALFTISVITON SINWNSSY 18389 ATALS YSNNVI NI ALNVHHVM SIHL dO 51481 SHL AAIGOW MALTY OL SVH NOSH3d ON ONI 15380 31415 40 SNOILVOTT80O ANY S3L LNVHHVM 1 1Y S3ad3suadfns ATSSaHdX3 ALNVHHVM SIH L JACY AALS S3LLNVHSHVM T TV ANY GIOA TIIM 3AO8V AO HLIM A IdlNOO OL sioe Jospue oj eunjiej Aue JO ejqisuodsai eq jou
30. NAL ANTICIPATOR SETTING FILTER SIZE APPROXIMATE SHIPPING WEIGHT BLOWER DATA BLOWER MODEL MOTOR HORSEPOWER MOTOR RPM CFM Q 2 amp 5 IN W C SPEED LOW MD LOW MD HIGH HIGH FOR BURNER COMBUSTION INFORMATION REFER TO INITIAL STARTUP VMA1 50 50 000 48 000 VMA1 75 75 000 72 000 42 1 5mm 11 IN W C 4 5 N W C 14 IN W C 14 IN W C 10 0 03 IN W C 3 5 03 IN 25 55 F 95 WIDTH 18 DEPTH 25 3 4 HEIGHT 57 ZA 805 1010 1196 1338 WIDTH 12 DEPTH 12 115 VOLTS 60HZ 1 PH 15 AMPS 7 15 AMPS 0 8 MILLIAMPS 1 18 X 24 X 1 175 LBS 12 9T DIRECT DRIVE 1 2 1065 HIGH SPEED S 2 EN 695 797 668 860 995 869 1038 1210 1076 1162 1420 1259 All installations and services must be performed by qualified service personnel INSTALLATION PARTS PACKAGE VMA 50 VMA 75 ET K vsoos4ts2 VS00S4183 PART PART V350020 V350020 V300132 V300132 3 8 radiator hose V410017 CPVC adapter V320833 LP conversion kit VAOPS7727 V410017 V320833 VAOPS7728 Ill GENERAL INSTRUCTIONS AND CLEARANCES READ BEFORE START OF INSTALLATION 1 The BTU output capacity of the furnace proposed for installation should be based on a heat loss calculation made according to the manuals provided by the Air Conditioning Contractors of America ACCA or the American Society of Heating Refrigeration and Air Conditioning Engineers Inc ASHRAE 2
31. NG FAMILIARIZE YOURSELF WITH THE START UP AND CHECKOUT PROCEDURE ALL INSTALLATION AND SERVICES MUST BE PERFORMED BY QUALIFIED HEATING CONTRACTORS To assist you in troubleshooting this furnace it is equipped with an integrated ignition control with diagnostics These diagnostics evaluate what control system has experienced a failure and will activate a flashing light on the control in different sequences to help pinpoint the failure which has occurred Note check diagnostic code through view port prior to removing access door DIAGNOSTIC FEATURES The 50A65 control used on this furnace continuously monitors its operation and the operation of the system If a failure occurs the LED light on the control will flash a code If the failure is internal to the control the light will stay on continuously In this case the entire control should be replaced as the control is not field repairable If the sensed failure is in the system external to the control the LED will flash in the following flash pause sequences to indicate failure status each flash will last approximately 0 25 seconds and each pause will last approximately 2 seconds 1 flash then pause system locked 2 flashes then pause pressure switch stuck closed 43 All installations and services must be performed by qualified service personnel 3 flashes then pause 4 flashes then pause 6 flashes then pause 7 flashes then pause 8 flashes then pause Continuous
32. OSET INSTALLATION PROVIDE MIN 250 SQ INCH INCH 1 The return air opening into the closet PEN FREE AREA N FRONT Ew Lacu ud is to have a minimum free area of 250 OR P dd IN CLOSET DOOR LOCATED lt sq in see Figure 5 TOP CENTER OR 57 BOTTOM 2 The return air opening may be located in the top center or ideally bottom of the closet door or side wall 0 INCHES SID CLEARANCE DIAGNOSTIC VIEW PORT FURNACE CABINET d N EA CLOSET DOOR Figure 5 AWARNING Do not obstruct any return air openings including the return grille on the furnace To do so may cause the furnace to activate the high limit and shut down 3 The cross sectional area of the return system leading into the closet when located in the floor or ceiling shall not be less than 250 square inches 4 The total free area of openings in the floor or ceiling registers serving the return duct system must be at least 350 square inches At least one register must be located where it is not likely to be covered by carpeting boxes furniture or other objects 5 Materials located in the return duct system must have a flame spread classification of 200 or less 6 Non combustible pans having one inch upturned flanges are to be located beneath openings in a floor return duct system 7 Wiring materials located in the return duct system must conform to articles 300 22 of the Nati
33. P N MG 511 Printed Instruction Manual Note This page is not to be included as part of printed hard copy Overall Specifications Material white plain paper Printed text black Binder staple upper left corner Individual page specifications Cover page printed single side up Warranty page printed single side down facing out as last page of manual The balance of instruction manual pages to be printed utilizing both front and back side of paper evoly TENIS GAS FIRED HIGH EFFICIENCY FURNACE DOWN FLOW amp DIRECT VENT SEALED COMBUSTION MODEL VMA1 50N amp VMA1 75N INSTALLATION AND SERVICE MANUAL For installation in 1 Manufactured Homes 2 Modular Homes Buildings 3 Site Constructed Residential Single Story Dwellings ANWARNING FOR YOUR SAFETY 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 e Do not to light any appliance e Do not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas suppliers instructions e f you cannot reach your gas supplier call the fire department A WARNING f the information in these instructions is not followed exactly a fire or explosion may result causing property damage personal injury or loss of life A WARNING Improper installation adjustment
34. PECIAL VENTING SYSTEM REFER TO INSTALLATION INSTRUCTIONS NO MG 511 FOR PARTS LIST AND METHOD OF INSTALLATION SEE STYLE CREST INC SB 5 2450 ENTERPRISE STREET FREMONT OH 43420 MAXIMUM VENT LENGTH 30 FT MINIMUM VENT LENGTH 8 FT THIS FURNACE MUST BE INSTALLED IN ACCORDANCE WITH MANUFACTURES INSTRUCTIONS AND LOCAL CODES IN THE ABSENCE OF LOCAL CODES CONFORM TO THE FOLLOWING CODES AS APPLICABLE NATIONAL FUEL GAS CODE ANSI 2223 1 MANUFACTURED HOME CONSTRUCTION AND SAFETY STANDARD TITLE 24 CFR PART 3280 MANUFACTURED HOME INSTALLATION ANSI NCSBCS A225 1 THICKNESS OF THE WALL CONSTRUCTION THROUGH WHICH THE VENT AIR INTAKE PIPES MAY BE INSTALLED MINIMUM 1 2 MAXIMUM 18 PERFORMANCE THIS APPLIANCE IS A CATEGORY I DIRECT VENT FORCED AIR FURNACE FOR MOBILE HOME OR TRAVEL TRAILER INSTALLATION TESTED AT 0 3 INCHES OF WATER STATIC PRESSURE DESIGNED MAXIMUM OUTLET AIR TEMPERATURE 200 F OR LESS WITH A NOMINAL TEMPERATURE RISE OF 55 F CONFORMS TO ANSI Z21 47b CSA 2 3b 2008 CENTRAL FURNACE FOR MAXIMUM EFFICIENCY SET APPLIANCE FOR A 40 F TEMPERATURE RISE ELECTRICAL RATING 115 VOLTS 60 HERTZ 1 PHASE MAXIMUM CURRENT AMPS 7 15 WARNING RISK OF FIRE OR ELECTRIC SHOCK ONLY CERTIFIED OR MANUFACTURER QUALIFIED SERVICE PERSONNEL SHALL BE USED TO INSTALL AND PROVIDE MAINTENANCE OF THIS APPLIANCE 390425 O 5059 1005 OT 5170 MA All installations and services must be performed by qualified service pe
35. RMOSTAT IS THERMOSTAT AND CORRECT SATISFIED IF NECESSARY Yes DOES THE CIRCULATING AIR BLOWER TURN OFF AFTER THERMOSTAT IS SATISFIED WITHIN 120 SECONDS Yes Y 48 All installations and services must be performed by qualified service personnel Yes Yes IF LED LIGHT FLASHES 1 FLASH THEN PAUSE SYSTEM LOCKOUT 2 FLASHES THEN PAUSE PRESSURE SWITCH STUCK CLOSED 3 FLASHES THEN PAUSE PRESSURE SWITCH STUCK OPEN 4 FLASHES THEN PAUSE OPEN LIMIT SWITCH OR ROLLOUT SWITCH 6 FLASHES THEN PAUSE 115 VOLT POWER REVERSED 7 FLASHES THEN PAUSE LOW FLAME SENSE SIGNAL 8 FLASHES THEN PAUSE CHECK IGNITOR OR IMPROPER GROUNDING CONTINUOUS FLASHING _ FLAME HAS BEEN SENSED WHEN NO PAUSE NO FLAME SHOULD BE PRESENT NO CALL FOR HEAT CHECK COMPLETE SYSTEM OUT THE LED WILL ALSO FLASH ONCE AT POWER UP LED LIGHT STAYS ON CONTINUOUSLY COMPLETE FAILURE REPLACE INTEGRATED CONTROL TROUBLESHOOTING COMPLETE 49 All installations and services must be performed by qualified service personnel APPENDIX A REPLACEMENT PARTS OSA VMAT 75 SHOWN OTHER MODEL S MAY VARY SLIGHTLY NOTE 50 All installations and ser
36. RY J FLOOR CUTOUT COMBUSTION AIR DUCT BOTTOM PANEL TEMPLATE UNIT TOP VIEW VIEW Figure 2 TOP VIEW ASSEMBLED ALTERNATE BENT TABS SECURING DUCT CONNECTOR DUCT CONNECTOR TO DISTRUBUTION DUCT W ALTERNATE TABS BEN EUP DUCT OPENING TAB SHEET METAL SCREW DISTRUBUTION 4 REQUIRED 1 EACH DUCT SIDE ATTACHING DUCT CONNECTOR 70 BASE TO BASE T T T T FLOOR P J0 BASE T L x 4 I FLOOR JOIST CONNECTOR DUCT DISTRIBUTION DUCT gt lt DISTRIBUTION DUCT gt Figure 3 After cutting openings in the floor place the bottom panel in position Mark the square opening location on the distribution duct at the connection point of the 12 All installations and services must be performed by qualified service personnel connector duct Remove the bottom panel Cut an opening in the distribution duct slightly larger than the connector duct refer to Figure 2 for location of this cut Cut the connector duct to length Install the connector duct Bend over each tab Insure an airtight seal by using high temperature sealant or tape on the joint Reinstall the bottom panel over the connector duct Put the base top assembly in place see Figure 3 Slit the corners of connector duct down to the top of the base assembly If metal projects more than 1 inch above the top of the base assembly trim the flanges down to 1 inch While the top of distribution duct is being pulled up wi
37. URT re ea HOLINS 3unssaud a N OL NONNOD 17 OL LOH 193NNO2 095010 MOIS HOLIMS 3N ISS3Hd S3HSY Z 8 10X901 WAISAS HSY SOLISONOVI qut 058 ang 2 ML 3TH 110 Toa LS Vy san Pals MOSN3S WY CIAO Bu ans HO 9Nr1002 m Xnv 1n0 moOs P9H 63 02 SNIINGH NWONH aes oho aS oS OM NIROSH nd i OTTER AS 55384 TA 3 WS x Sd 1 DEEEH e o mo W x INVA IVISOWGBHL 1002 91H YOLO INOD 94 LL aada AAA 91 6905 NUN 9 5 4017 A M sb 330 440 038 081 ao aa 5 le 3f NO 038 00 NO 440 03S 06 m ISNI NO NO 50935 09 JOU t CE 44O NYAL QO HOLIMS 145 AVI30 OL E 5 a z T Sp NO NO JAS 09 440 NO 085 Gh od NOTB Em 5 m d NO 440 08s 0 Aye MWUX C Ic 440 440 8s SI 83000 TN a 29 zE Eme de ME i MET NGNT AER CRI SOVOG HOLIMS 145 AYI30 OL mm ip BN CNN O40 HUNK HQ HLH o SNOILISOd HILIMS NOILdO mx HNT eid ovd H 1000 3 Vos NOWNOO SLIHM eR HOIH_ON MOTTIA 1002 i i AOT QN 3TI8 258 081NOO Q31YM93INI 91 6905 HOLMS HOLIMS d NOO0 S N
38. aced D HOUSE AIR BLOWER Check and clean the blower wheel housing and compartment with a vacuum Check the motor name plate and follow the motor manufacturers instructions for lubrication if required IMPORTANT Some motors are permanently lubricated and should not be oiled See motor name plate for specific instructions E RETURN AIR FILTER The Return Air Filter s Provided with this unit is a permanent type filter This filter s should be inspected and when dirty cleaned or replaced if necessary to assure proper furnace operation Follow the cleaning removal and replacement procedure below 42 All installations and services must be performed by qualified service personnel FILTER MAINTENANCE PROCEDURE The filter is located inside front door of the VMA Remove filter retaining rod and remove dirty filter Clean the filter by vacuuming rinsing with tap water hosing or dipping in an ordinary detergent solution After cleaning replace the completely dry filter and retain with retaining rod If the filter has a mesh the mesh side of the filter must be towards the furnace FILTER REPLACEMENT Should the filter require replacement replace with like size and type filter as originally supplied with furnace IMPORTANT Remind homeowner of importance of monthly filter inspections during the heating season to ensure efficient and trouble free operation of their furnace Vill TROUBLESHOOTING NOTICE BEFORE TROUBLESHOOTI
39. assembly for warpage deterioration and carbon or other build up If necessary clean the accessible portions of the housing and blower with a damp cloth Vacuum to remove any lint or dust from the motor assembly 41 All installations and services must be performed by qualified service personnel 5 GASKETS SEALING MATERIALS Inspect all visible gaskets for signs of degradation or liquid seepage especially any seals which were removed as part of the inspection Replace any suspect gaskets C HEAT EXCHANGER Inspect for corrosion pitting warpage deterioration carbon build up and loose gaskets in the flue pipe burner box and accessible areas of the heat exchanger 1 CLEANING THE COIL AIR SIDE a Remove the blower from the blower compartment In order to remove the blower it will first be necessary to disconnect the furnace from the outside power supply and disconnect the blower wire harness from the furnace at the blower pan quick connect b Clean the coil with a vacuum cleaner by going through the blower pan opening being careful not to bend or damage any of the fins c Once all components are cleaned they must be re installed to their factory produced state Any seals or joints in the flue system which have been removed or loosened must be reconnected and sealed if necessary Do this in accordance with the installation instructions ANCAUTION The inducer motor mounting plate gasket and the collector box gasket must be repl
40. correct input can be assumed if the furnace manifold pressure is the same as that shown on the rating label if a gas meter is not available for natural gas or the unit is installed on an unmetered propane gas supply Shut off the gas supply to the furnace Remove the pressure gage and re install the pipe plug using a thread compound resistant to the action of LP gases If the rated input cannot be obtained with the present orifice at the correct pressure your local gas supplier may assist in sizing the proper orifice Style Crest will gladly assist in sizing the orifice if you provide them with the heating value in BTU per cubic foot and the specific gravity of the fuel gas D BURNER ADJUSTMENT This unit is designed to not require any burner adjustment The flames should be checked by looking through the sight glass located on the burner box Burner 37 All installations and services must be performed by qualified service personnel flames should be clear blue and almost transparent in color see Figure 16 NOTE It is not unusual to have orangish flames visible in the tube for LP gas SOLID BLUE FLAME BURNE MANIFOLD Figure 16 A CAUTION The furnace models are direct vent design and do not require an air shutter adjustment air shutters are not used for proper flame characteristics Burner box access cover must always be secured with all screws in place and tightened before operating
41. e information above on this ibl 2 Set the thenmostat to the lowest setting 3 Tum off all electric power to the appliance 4 This appliance is equipped with a hot sur ace igniter that automatically lights the bumer Do pat try to tight the by hand 5 Turn gas contro knob clockwise 7 to OFF position For gas valves with switch move the switoh to the OFF position 6 Wait five 6 minutes 10 clear out any Then smeli gas including near thefloor or ground if you amel STOP Follow B in the safety information above on this label H you don t smell gas go to next 7 Turn gas control knob counterciockwiae to ON position For gas valves with a switch move the switch to the ON position 8 Turn on all alectric power to unit 9 Sot thermostat to desired to setting and equipped set 10 appliance wili not operate fallow the instructions To Sek thermostat to owes wetting and if equipped set the set the operating mode to COOL or 2 pepe o piled the appliance 3 M OO cid GU Tomb ss Cael compartment cover 4 Turn gas contro knob clockwise For gas valves with aviich move the switch to the OFF poaltion to OFF 5 Replace the burner compartment cover All installations and services must be performed by qualified service personnel This and the previous page
42. e following section For roof venting refer to Section IV J of this manual 18 All installations and services must be performed by qualified service personnel NOTICE The air intake pipe must be supported every 4 feet After making sure the length of the piping is correct glue all connections in place except the connection to the burner box If the combustion air piping is installed in a warm humid place such as a laundry room or above a suspended ceiling it must be insulated with a 1 0 foil faced insulation or its equivalent If the vent piping is run through an unconditioned space it must be insulated with a 1 0 foil faced insulation or its equivalent ACAUTION Outside combustion air must not come from an area that is directly adjacent to a pool hot tub or spa Measures should be taken to prevent the entry of corrosive chemicals or vapors to the combustion and ventilation air supply Such chemicals include but are not limited to chlorinated and or fluorinated hydrocarbons such as found in refrigerants aerosol propellants dry cleaning fluids degreasers and removers Other harmful compounds may come from bleaches air fresheners or mastics Vapors from such products can form acid compounds when burned in a gas flame Should acid compounds form in your furnace it may reduce the life of the furnace H Direct Venting Through a Sidewall 1 Vent And Combustion Air Pipes Vent and combustion air pipes may pass through a maxim
43. es of proper terminations a The exhaust vent termination must be installed in the same atmospheric pressure zone i e on the same wall as the air intake termination b The bottom edge of the vent termination elbow must be installed at least 12 inches above the outlet of intake termination elbow c The horizontal distance between the inlet and exhaust terminations should be minimized when possible and should never exceed 24 inches d The vent and intake systems should utilize the same numbers of elbows and approximately the same length of straight pipe to reach the outside termination 20 All installations and services must be performed by qualified service personnel 90 MEDIUM RADIUS S NOTE THE HORIZONTAL DISTANCE BETWEEN THE INLET AND THE OUTLET SHOULD VENT BE KEPT TO A MINIMUM TO PREVENT RECIRCULATION OUTLET TO THE AIR INLET ITSELF yl 12 INCH MIN m3 rd s HORIZONTAL SIDEWALL VENTING TERMINATION Figure 8 Typical Relative Locations of Direct Vent Terminations When Sidewall Venting 3 Exhaust Vent Terminal Location Clearance Requirements a The vent terminal shall be located at least 3 feet above any forced air d inlet located within 10 feet Refer to Figure 9 for a depiction of the minimum required clearances between vent terminations and building features according to the National Fuel Gas Code NFGC The vent terminal shall be at least 12 inches below 12 i
44. flashing no pause pressure switch stuck open open high limit switch 115 volt AC power reversed low flame sense signal check ignitor or improper grounding Flame has been sensed when no flame should be present no call for heat The LED will also flash once at power up A WARNING Power must be disconnected before servicing All installations and services must be performed by qualified service personnel TROUBLESHOOTING GUIDE THE SYSTEM IS STARTED BY SETTING THE THERMOSTAT TO CALL FOR HEAT THE FOLLOWING SHOULD HELP ESTABLISH THE TYPE OF MALFUNCTION OR DEVIATION FROM THE NORMAL OPERATION TO USE THIS DIAGRAM YOU JUST NEED TO FOLLOW THE INSTRUCTIONS IN THE BOXES NOTE CHECK DIAGNOSTIC CODE THROUGH VIEW PORT PRIOR TO REMOVING ACCESS DOOR TURN THERMOSTAT TO CALL FOR HEAT DOES THERMOSTAT MAKE CONTACT No IS ROOM TEMPERATURE NO IS ROOM TURN PSTAT Yes BELOW THERMOSTAT TEMPERATURE MEE E 2 2 SETTING ABOVE 90 DEGREES RT EMO COOL THE THERMOSTAT IS THE TRANSFORMER SUPPLYING 24 VOLTS No CORRECT WIRE TO THE THERMOSTAT ARE WIRES CONNECTED L gt CONNECTIONS Yes Yes CHECK INPUT REPLACE IS INTERNAL DAMAGE POWER DOOR THERMOSTAT PRESENT ON THE gt INTERLOCK TRANSFORMER SERVICE SWITCH AND FUSES Y Yes Yes REPLACE TRANSFORMER IS THE INDUCER No IS THERE 24 VOLTS No
45. flashing plate Concentric vent utilizing existing roof jack as a chase Follow instructions included with concentric vent kit VAOPS7515 Concentric vent without roof jack as a chase Follow instructions included with concentric vent kit VAOPS7515 Dual 2 vent air termination kit VAOPS7484 1 Remove roof jack assembly 2 Place a 2 2 holes ceiling roof flashing plate to the ceiling centering it over existing hole 24 All installations and services must be performed by qualified service personnel Place second flashing plate on roof over existing hole Plate must be sealed to roof to ensure a weather proof seal Secure plate to roof Drop pvc pipes thru holes in flashing plates Secure with hose clamps to flashing plate Seal with silicone type caulk Re gs oe The furnace may be vented vertically through the roof The outlet inlet of the vent and air intake terminations shall be a minimum of 12 inches above highest anticipated snow level The vent outlet must be installed a minimum of 12 in above the air intake inlet The combustion air intake shall be installed upwind of the vent outlet when exposed to prevailing winds The exhaust vent and combustion air intake can be a minimum of 3 in and a max of 24 in apart see Figures 11 amp 12 When installing dual 2 PVC pipes and the 2 flashing plates VAOPS7484 on pitched roof slope adapter may be used to simplify 2 90 VENT AIR ELBOWS INTAKE MEDIUM 1
46. h considerable snowfall it is advisable to locate the vent terminal much higher than the minimum 12 inches above ground to prevent blockage by snow accumulation or drifting e The vent and combustion air terminations shall be checked periodically at least at the start of each heating season for restriction or blockage from foreign material in the exhaust vent or in the air intake piping Clean the air intake and vent terminations when necessary Installation Of Outside Exhaust Intake Terminations 1 After determining appropriate installation locations suitable locations must observe all clearances specified in this manual mark and cut two 2 2 3 8 inch diameter holes in the outside wall for the outdoor terminal s 2 Measure and cut two 2 2 inch diameter thermoplastic pipes 1 1 2 inches longer than the depth of the wall Cutting the pipe longer leaves a 34 inch connection allowance at both ends of the pipe Using PVC pipe cement glue a PVC elbow or coupling fitting to one 1 end of each pipe Before inserting the pipe through the wall mark the other end of the pipe so the elbow orientation can be determined Also if a protective shield refer to Section H passage 1 of this manual will be used on the exterior surface of the wall it should be installed at this time From the inside glue a coupling fitting to each pipe using PVC pipe cement while being careful to maintain the proper orientation of the termination elbow s
47. icable gas Pipe dope or sealant certified to be resistant to the action of the applicable gases should be used on all threaded joints A drip leg must be used on both LP and Natural gas installations prior to the furnace in order to trap oil condensate and other impurities which might otherwise lodge in the gas valve or plug the burner orifice A drip leg shall be provided at the outlet of the gas meter when there is excessive condensation between the gas meter and the furnace Failure to install a drip leg may void the limited warranty on the furnace ANWARNING gas pipe connections must be leak tested using methods approved by State Local and National Fuel Gas Code NFPA 54 ANSI Z233 1 Latest Edition Any leaks must be repaired immediately after turning off the gas supply A final test for gas leakage must be made after purging the gas line A CAUTION DO NOT wet electronic components during the leak test Wetting electronic components may damage circuitry and cause a hazardous situation Dry moisture from all leads and terminals if wetting occurs Wait at least 24 hours for the circuit to fully dry before energizing the system 15 All installations and services must be performed by qualified service personnel F AWARNING The furnace and its gas valve must be disconnected from the gas supply during pressure testing of the gas supply system at pressures in excess of 1 2 PSIG or 14 inches w c GENERAL VENTING REQUIREMENTS
48. ices must be performed by qualified service personnel control with one of the higher speed blower leads attached to a terminal marked Park Be sure to attach any unused blower leads to a terminal marked Park Replace the blower door and turn on the power supply F FURNACE CHECKOUT PROCEDURE Before any system of gas piping is finally put into service it shall be carefully tested to assure that it is gas tight as indicated in the Fuel Piping Section of this Furnace Manual NOTICE All controls on the unit should be checked for proper functioning prior to the qualified service personnel leaving the job site Specifically the following should be checked With furnace in normal heating operation check to make certain blower will start and stop automatically under control of integrated fan control 1 Check safety limit control as follows a Shut off incoming power b Block return air opening or disconnect blower motor leads c Restore power to furnace d Set thermostat above room temperature calling for heat e When temperatures are reached in furnace at limit control setting with blower out of operation burner should shut off f Shut off electrical power IMPORTANT Remove blockage or reconnect blower motor and restore power 2 Make certain thermostat will automatically start and stop furnace 3 Block the flue pipe outlet gradually with a flat piece of metal until the pressure switch functions shutting off the main
49. installations and services must be performed by qualified service personnel MAXIMUM VENT LENGTH VENT SIZE 2 IN PVC FURNACE EXHAUST COMBUSTION AIR INTAKE MODEL VENT ELBOWS NO ELBOWS NO Note the drain elbow supplied with VMA furnaces count as 1 elbow Note the two 45 elbows supplied w VMA furnace count as 1 elbow Table 2 6 A hack saw may be used to cut the PVC pipe It must be cut smoothly at right angles with all burrs removed All joints must use standard PVC Schedule 40 elbows and couplings Joints are not to be made by gluing except where noted and butting together the cut or raw edges of the vent pipe The joints inside the vestibule should be sealed with a silicone caulk to allow for maintenance Notice Do not use silicone caulk to seal the PVC sleeve or coupling to the metal air intake collar on the burner box The screw securing the sleeve or coupling to the collar is sufficient 7 Use the two radiator hose clamps to connect both the exhaust vent and combustion air vent pipes to the venting system included in the parts package This will aid in the serviceability of the vent should it need to be removed in the future Refer to figure 6 8 Vent connections shall be checked for leakage with the furnace induced draft blower running and with the vent termination blocked A mild soap and water solution may be used to check for leaks 9 Vent pipe passing through an unheated space must be insulated with 1
50. ion 5 FIELD WIRING AND REPLACING WIRING Field wiring between the furnace and devices not attached to the furnace shall conform with the temperature limitation for Type T 35 C wire If any of the original factory supplied furnace wiring is replaced or a separate device other than the thermostat is wired internal to the unit 105 C thermoplastic or equivalent wire must be used 32 All installations and services must be performed by qualified service personnel V STARTING THE UNIT A SEQUENCE OF OPERATIONS AT ANY TIME THE GAS VALVE IS NOT ENERGIZED START CONTINUOUS SAFE OPERATION CHECK IF FLAME SIMULATION CONDITION PRESENT OR ROLL OUT SWITCH OPENS SYSTEM ENERGIZES INDUCER FAN FOR 15 SECONDS AND CIRCULATOR BLOWER AT HEATING SPEED UNTIL SITUATION CORRECTION THERMOSTAT CALLS FOR HEAT CONTACTS CLOSE CONTROL BOARD ENERGIZED INDUCER ENERGIZED ADEQUATE DIFFERENTIAL PRESSURE PRESSURE SWITCH SENSES CONTACTS CLOSE Y START TRIAL FOR IGNITION POWER IS APPLIED TO THE SILICON NITRIDE POWER INTERRUPTION SYSTEM SHUTS OFF IGNITOR IGNITOR WARM UP IS 20 SECONDS AFTER IGNITOR WARM UP THE GAS VALVE IS ENERGIZED TO OPEN FLAME MUST BE DETECTED WITHIN 4 SECONDS IF FLAME IS DETECTED THE DELAY TO FAN ON TIME BEGINS 45 SECONDS 33 RESTARTS WHEN POWER IS RESTORED IF FLAME IS NOT DETECTED THE GAS VALV
51. lua gas Inspect rubber hose connecting inducer autlet to PVC tee and all vent system joints for leak free connections before furnace operation Can cause personal injury or loss of life This compartment must be closed except when servicing L 380024 m E NOTE DO NOT ADD SEALANT TO THE PVC BURNER BOX INLET RING CONNECTION REFER TO INSTALLATION INSTRUCTIONS 10 224 J OUTSIDE POWER SOURCE CONNECT 15 60Hz TO L1 HOT AND L2 COMMON 390229 390056 WARNING ynu do not follow these instructions exactly fire personal injury lor explosion result causing property damage or loss af ile ver itis equipped with ahot surface igniter that autamatically lights the burner Do nok try to ight the burner by hand B BEFORE OPERATING eral al std the sondanos area gan Be sure to smek to the base of unit because some gas isheaviar than air and will on the floor or ground WHAT TO DO IF YOU SMELL GAS attempted repair may reaut in a fire or explosion Do not use this appliance if amy part has been underwater immediately qualified service technicien to inspect the appliance and to replace any part of the contrat system and any gas control which has been underwater STOP Read th
52. nches horizontally from or 12 inches above any door window or gravity air inlet into a building The bottom of the vent terminal shall be located at least 12 inches above grade The vent terminal shall not be located e over public walkways or over an area where wetting of surfaces by condensate or water vapor could create a nuisance or hazard e near soffit vents crawl space vents or other areas where condensate or water vapor could create a nuisance hazard or cause property damage and e where wetting of components by condensate or water vapor could be detrimental to the operation of pressure regulators relief valves or any other equipment The vent terminal shall be installed a minimum of 14 inches from any obstruction and 3 feet from an inside corner of an L shaped structure 21 All installations and services must be performed by qualified service personnel ele FIXED CLOSED FIXED OPERABLE 80 OPERABLE ae lu dur 3r
53. on when an external electrical source is utilized 4 BLOWER MOTOR SPEED WIRING Figure 15 FACTORY WIRING VMA 50 OTOR CONTROL LOW RED HEAT H ED LOW BLUE PARK HIGH BLACK COOL H ED HIGH YELLOW PARK COMMON WHITE CIR N FACTORY WIRING VMA 75 OTOR CONTROL LOW RED PARK ED LOW BLUE HEAT H ED HIGH YELLOW PARK HIGH BLACK COOL H COMMON WHITE CIR N BLOWER DELAY SETTINGS To delay fan Set Switch turn on by 1 2 15 sec Off Off 30 sec Off On 45 sec On Off 60 sec On On To delay fan Set Switch turn off by 3 4 60 sec On On 90 sec Off On 120 sec On Off 180 sec Off Off Factory Settings For Optimal Performance 29 All installations and services must be performed by qualified service personnel VMA1 50 ALTERATIONS REQ D FOR A C DESIGN EXTERNAL STATIC PRESSURE COOLING UNIT HTG Speed Recommended CLG Speed 24 000 LOW MED LOW 30 000 LOW MED HIGH 36 000 LOW HIGH Speed Tap Furnace Airflow CFM vs External Static pressure in WC Static Pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 836 805 773 743 695 620 566 ML 1044 1010 972 914 860 826 752 MH 1250 1196 1146 1101 1038 977 902 High 1339 1338 1283 1233 1162 1086 1008 Speed Tap Temperature Rise vs External Static Pressure in WC Static Pressure 0 1 0
54. onal Electrical Code NFPA70 Latest Edition 8 Gas piping is not to be located in or through the return duct system 14 om All installations and services must be performed by qualified service personnel E FUEL PIPING Sizing and installation of fuel lines must be in accordance with Federal State amp Local regulations Including the National Fuel Gas Code NFPA 54 ANSI Z233 1 Latest Edition NOTE These furnaces are designed to be gas piped through the left side or the bottom For service purposes it is recommended that the gas union be located inside the furnace when possible AWARNING Because of the potential of odorant fade a gas leak may not be detected by smell If this furnace is installed below grade contact your gas supplier for a gas detector A qualified installer or service person must perform all gas piping and testing Piping from the natural gas meter to the furnace shall be in accordance with requirements of the local gas utility Piping from the LP tank to the furnace must follow the recommendations of the gas supplier A readily accessible manual shut off valve certified for the applicable gas with a non displaceable rotor member shall be installed within six feet of the gas equipment serves A union or flanged connection shall be provided directly up stream of the burner to allow burner removal Unions must be of a ground joint type or flange jointed type using a gasket resistant to the appl
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56. out of the gas line for initial start up of the furnace after installation This should be done by a qualified heating contractor If excessive gas escapes when purging the gas supply at the union allow the area to ventilate for at least 15 minutes before attempting to start the furnace LP gas is especially dangerous because the specific gravity of LP gas allows it to accumulate at floor level at a dangerous concentration AWARNING Heat exchanger oil will burn off on initial firing creating an unpleasant odor To prevent this odor from occurring more than once it is suggested that 1 A window s be opened 2 The thermostat set at highest setting 3 The furnace remain running as noted above for 15 minutes or until odor has dissipated 35 All installations and services must be performed by qualified service personnel C ADJUSTMENT OF BTU INPUT RATE The orifice for this furnace was sized 1 for natural gas having a heating value of 1025 BTU per cubic foot and a specific gravity of 65 or 2 for liquefied propane gas with a heating value of 2500 BTU per cubic foot and a specific gravity of 1 55 The information plate inside the furnace vestibule will specify which gas your furnace is orificed for If the furnace is installed at an altitude that is more than 2 000 feet above sea level it is mandatory that the input to the burner be reduced 4 0 for every 1 000 feet that it is above sea level If the furnace is installed at an eleva
57. pening Clearance in accordance with local installation codes the requirements of the gas supplier and the manufacturer s installation instructions n direct vent applications clearance in accordance with local installation codes the requirements of the gas supplier and the manufacturer s installation instructions In non direct vent applications i e sidewall venting only the required clearance is 7 feet Figure 9 NFGC Minimum Clearances Between the Vent Terminal and Various Building Features 22 All installations and services must be performed by qualified service personnel 4 Vent Terminal Location Guidelines NCAUTION Bushes shrubs or any vegetation that may restrict the flow of flue products must be kept away from vent and air intake terminations Terminations must also be kept clear of any leaves weeds combustible materials snow and ice build up Avoid locating the vent terminal over areas where dripping of condensate or small pools of acidic condensate could create a problem In addition to following any local code requirements when possible utilize the guidelines below in locating the vent terminal to help insure trouble free operation of a sidewall vented furnace e Avoid locating the vent terminal on wall facing prevailing winds and wide open areas When impractical choose a location that protects the vent from strong winds such as behind a fence or hedge e n geographical areas wit
58. r latest edition and all local codes having jurisdiction 2 Connection Of Power Supply Wires Remove the cover from junction box Insert 115 VAC wires through the strain relief bushing or conduit connection as applicable on the left side of the furnace junction box c Connect the hot wire to the black wire d Connect the neutral wire to the white wire e f Connect ground wire to the green wire Reinstall and secure the junction box cover with the original mounting Screws 3 Connection Of Room Thermostat Wires 27 All installations and services must be performed by qualified service personnel NOTE Class 1 thermostat wire must be used inside the furnace burner compartment a Insert 24 VAC wires through the plastic grommet on the left side of the furnace casing b Connect the thermostat wires to the W R 50A65 143 control refer to the wiring diagram c Connect the thermostat wires to the room thermostat IMPORTANT The room thermostat should be installed 4 to 5 feet above the floor on an interior wall which is relatively free from direct sources of heat sunlight or supply airflow or exposure to cold drafts from open windows and doors The nominal anticipator setting is 0 8 amperes for the VMA refer to the thermostat literature for additional information Four conductor thermostat wire is recommended for 24 VAC low voltage control circuit wiring How ever only 2 wires are requi
59. red for the furnace a heating application only Electrical Wire Diameter Maximum Recommended Thermostat Wire Length AWG Feet 24 55 22 90 20 140 18 225 Once the furnace is installed check the thermostat anticipator for proper nominal setting 1 Connect a multimeter capable of reading milliamps mA in series with the low voltage wires to the thermostat 2 Increase the thermostat setting or create a call for heat 3 Read the value of the thermostat current in milliamps 4 Adjust the heat anticipator of the thermostat to the value read by the multimeter If the heat anticipator is set too high the furnace may delay activation of a heating cycle for too long If the heat anticipator is set too low the furnace may cycle too frequently Either condition may not provide optimal comfort to the homeowner NOTICE The hot surface igniter and operation of this furnace depends on correct polarity The hot leg of the supply circuit must be connected to the black line lead L1 and the common leg L2 to the white line lead in the field 28 All installations and services must be performed by qualified service personnel mounted junction box The hot leg must pass through the disconnect switch in all cases to prevent the hazard of electrical shock when servicing IMPORTANT The furnace must be grounded in accordance with local codes and with the National Electrical Code ANSI NFPA NO 70 Latest Editi
60. ressure inside the closet with closet door closed and the furnace blower operating on high speed shall be no more negative than minus 0 05 inch water column ANWARNING Do not obstruct any return air openings including the return grille on the furnace To do so may cause the furnace to activate the high limit and shut down All installations and services must be performed by qualified service personnel A CAUTION The vent and air intake elbows must be kept away from bushes shrubs or any vegetation that may restrict the flow of flue products It must also be kept clear of any leaves weeds or other combustible materials Keep the vent hood clear of snow Avoid locating the terminals in areas where standing water or condensate drippage may be a problem AWARNING This furnace has been designed to be installed as a direct vent system and must have its combustion air brought in from outside the conditioned space The failure to install the vent air intake system as specified in these instructions Will void the heat exchanger warranty and may result in property damage personal injury or loss of life A CAUTION Outside combustion air must not come from an area that is directly adjacent to a pool hot tub or spa Measures should be taken to prevent the entry of corrosive chemicals or vapors to the combustion and ventilation air supply Such chemicals include but are not limited to chlorinated and or fluorinated hydrocarbons such as found in ref
61. rigerants aerosol propellants dry cleaning fluids degreasers and removers Other harmful compounds may come from bleaches air fresheners or mastics Vapors from such products can form acid compounds when burned in a gas flame Should acid compounds form in your furnace it may reduce the life of the furnace ANWARNING Because of the potential of odorant fade a gas leak may not be detected by smell If this furnace is installed below grade contact your gas supplier for a gas detector AWARNING gas piping must be leak tested methods approved by State Local and National Codes including the National Fuel Gas Code 54 ANSI Z233 1 Latest Edition A final test for gas leakage must be made after purging the gas line This test must be conducted with the unit operating and should include the furnace piping and gas valve Never use an open flame to check for a gas leak A CAUTION Care must be taken not to wet electronic components during leak test Wetting the primary ignition module may damage its circuitry and cause a hazardous situation Dry moisture from all leads and terminals if wetting occurs Wait at least 24 hours for the circuit to fully dry before energizing the burner circuit AWARNING The furnace and its individual gas shutoff valve must be disconnected from the gas supply during pressure testing of the gas supply system at pressures in excess of 1 2 PSIG or 14 0 w c The furnace must be isolated from the gas suppl
62. rsonnel The following safety information should be read understood and followed by the installer 1 Use only with type of gas approved for this furnace Refer to furnace rating plate 2 Do not install this furnace where it could be exposed to drafts or other wind or moisture conditions Refer to Section IV of this manual 3 Provide adequate ventilation air to the furnace space Refer to Section IV C and D of this manual 4 Connect this furnace to an approved vent system only Combustion products must be carried outdoors Refer to Section IV F thru J of this manual 5 Never test for gas leaks with an open flame Leak test methods must comply with State Local and National codes including the National Fuel Gas Code NFPA 54 ANSI 2233 1 Latest Edition 6 Always install furnace with a duct system that has an external static pressure within the allowable range referenced in specifications 7 Make sure supply air ducts are completely sealed to the furnace casing Refer to Section IV The following pages contain various warnings and cautions found throughout the Gas Fired High Efficiency Furnace Manual Please read and comply with the statements below AWARNING This furnace is not to be used for temporary heating of buildings structures under construction ACAUTION These high efficiency condensing furnaces are not certified for and shall not be vented into a standard or any type of chimney A CAUTION Negative p
63. services must be performed by qualified service personnel Yes AFTER GAS VALVE OPENS DO THE BURNERS IGNITE No CHECK FOR PROPER MANIFOLD PRESSURE ADJUST TO 3 5 FOR NATURAL GAS OR 10 0 WC FOR LP GAS Yes Yes IS IGNITOR No REPOSITION TO POSITIONED CORRECTLY CORRECT LOCATION DO BURNERS STAY LIT PAST PROOF OF FLAME CHECK Yes DOES THE INTEGRATED CONTROL CHECK ACROSS THE ENERGIZE THE No CIRCULATING AIR No REPLACE THE CIRCULATING AIR BLOWER BLOWER TERMINALS INTEGRATED CONTROL AFTER THE 45 SECOND CIR N amp HEAT TIME DELAY FOR PROPER VOLTAGE Yes CONFIRM IF DOES THE CIRCULATING AIR FAN COME ON WHEN ENERGIZED No DOES BLOWER SPIN FREELY No Yes Yes EITHER BLOWER WHEEL IS RUBBING AGAINST HOUSING OR MOTOR SHAFT IS SPINNING FREELY AND REPAIR OR REPLACE AS NECESSARY IS CAPACITOR WORKING PROPERLY Yes REPLACE MOTOR Ne REPLACE CAPACITOR 47 All installations and services must be performed by qualified service personnel Yes No No DOES SYSTEM RUN UNTIL IS LED LIGHT CHECK ALL THERMOSTAT IS SATISFIED ON INTEGRATED WIRING FOR CONTROL FLASHING LOOSE CONNECTIONS Yes Yes DOES BURNER SHUT OFF No CHECK FOR SHORT IN WIRE TO WHEN THE
64. tat set at highest setting 3 The furnace remain running at conditions 1 amp 2 above for 15 minutes or until odor has dissipated A CAUTION The furnace models are of direct vent design and do not require an air shutter adjustment air shutters are not used for proper flame characteristics Burner box access cover must always be secured with all screws in place and tightened before operating furnace ANWARNING Personal injury or property damage could result from repair or service of this furnace by anyone other than a qualified heating contractor ACAUTION Label wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation ACAUTION The inducer motor mounting plate gasket and the collector box gasket must be replaced if they show any sign of having been damaged A WARNING Power must be disconnected before servicing All installations and services must be performed by qualified service personnel Il FURNACE SPECIFICATIONS SERIES MODEL INPUT IN BTUH OUTPUT IN BTUH MAIN ORIFICE NAT MAIN ORIFICE LP GAS SUPPLY PRESSURE L P MINIMUM NAT MINIMUM L P MAXIMUM NAT MAXIMUM GAS MANIFOLD PRESSURE L P NAT INTAKE SIZE IN INCHES VENT SIZE IN INCHES NOMINAL TEMPERATURE RISE SEASONAL EFFICIENCY AFUE ANNUAL FUEL UTILIZATION EFFICIENCY DIMENSIONS CABINET SIZE SUPPLY AIR OUTLET ELECTRICAL SUPPLY FUSE OR HACR BREAKER TOTAL CURRENT AMPS NOMI
65. th one hand bend down each side of the connector duct tightly to the base assembly with the other hand This assures a tight connection between the base assembly and the connector duct and that the distribution duct will be full size Use high temperature tape and or high temperature silicone caulking on all joints and seams to minimize air leakage Secure the base assembly to the floor with two screws in the front flange 2 Cottage Base Model VCOT BASE The VCOT BASE cottage base Figure 1C is required for a freestanding cottage base installation The cottage base allows the two sides and rear to have an 8 x 12 register installed IMPORTANT All joints and seams of supply ducts must be sealed with a sealing method suitable to the application conditions and temperatures LE High temperature silicone and or aluminum tape Refer to assembly and installation instructions included with cottage base for additional information ALCOVE INSTALLATION INCH TOP CLEARANCE In this application a minimum of 18 inches of clearance P di must be provided to the front of the unit See Figure 4 o Note access to diagnostic view port PROVIDE REMOVABLE PANEL ABOVE ALCOVE TO ACCESS FLUE DIAGNOSTIC FURNACE YEN ANO CABINET IR 0 INCHES SID CLEARANCE Tt om NEAREST WALL OR bus PARTITION 205 Figure 4 13 All installations and services must be performed by qualified service personnel D CL
66. tion of 5 000 feet its input must be reduced 20 0 Example a furnace rated at 75 000 BTU at sea level must be reduced to a firing rate of 60 000 75 000 x 80 60 000 at an elevation of 5 000 feet If the furnace is installed at an elevation of 2 000 feet or less no reduction in input is required Your gas supplier or Style Crest will supply you with the correct orifice sizing information To check the input of your natural gas furnace allow the unit to operate for 10 to 15 minutes and proceed as follows 1 Call your gas supplier and ask for the BTU content heating value of one cubic foot of the gas supplied to the installation area An alternate approach is to assume a value of 1025 BTU Cu Ft which is the national average 2 With all other gas appliances turned off and using a stopwatch clock the time required for the small dial on the gas meter to make one full revolution The meter dial will state the cubic feet of flow for one revolution usually one two or five FORMULA BTU Cu Ft x Number of Cu Ft x 3600 Seconds Input BTU hr Seconds for one revolution EXAMPLE 1025 BTU Cu Ft x 2 Cu Ft x 3600 73 505 BTU Input 100 40 Seconds Check the model number of the furnace the input rate the type of gas and the manifold pressure on the rating label located in the burner vestibule If using the above example the furnace is a VMA1 75N model and the input rate is 73 505 BTU hr The input rate would be acceptable because it was
67. um wall thickness of 18 inches The minimum wall thickness is 2 inches Referring to Figure 7 the maximum distance from the outer wall to the center of the elbow is 12 inches 19 All installations and services must be performed by qualified service personnel VENT OUTLET COMBUSTION AIR INLET FL 12 MAX M 4 MIN ai 1 2 MAX VENT TERMINATION MIN COUPLING COUPLING NLESS ELBOW UNLESS ELBOW 15 ELBOW 15 FLUSH FLUSH COMBUSTION AIR INLET TERMINATION E d 674 ELBOW COUPLING COUPLING TERMINATION TERMINATION POINTING DOWN INSIDE OUTSIDE INSIDE OUTSIDE STRUCTURE STRUCTURE STRUCTURE STRUCTURE 1B MAX 18 r H 2 MIN F 2 MIN Figure 7 Proper Direct Vent Terminations RH amp LH views and Vent Termination Only w o Outside Combustion Air Intake RH view NOTICE If exterior sidewall building materials are subject to degradation from contact with flue gases or moisture a minimum 24 inch diameter shield shall be fabricated from stainless steel or UV resistant plastic sheet The protective shield shall be installed around the vent pipe on the outside wall 2 Exhaust Vent Termination Elbow The exhaust vent termination elbow shall be installed in accordance with these instructions and any applicable local codes Refer to Figures 7 and 8 for typical exampl
68. vices must be performed by qualified service personnel PARTS UNIT VMA1 50N VMA1 75N PARTS UNIT 50 1 75 ITEM DESCRIPTION PART NO PART NO QTY ITEM DESCRIPTION PART NO QTY PART NO QTY 1 28930 1 V28930 1 17 FILTER RETAINER ROD V14808 1 V14809 1 2 HEAT EXCHANGER 39032 1 V39033 1 18 FILTER V370192 V370192 3 SIDE CASING LEFT V619029 1 V619029 1 19 INDUCER V340330 V340330 4 SIDE CASING RIGHT V619030 1 V619030 1 20 INDUCER GASKET V330137 V330137 5 TOP V619028 1 V619028 1 21 IGNITER V380650 V380650 6 BLOCK OFF COIL za 18952 2 22 FLAME SENSOR 350759 V350759 7 BAFFLE AIR SIDE V18980 V18935 23 CAM LATCH ASSEMBLY V320904 V320904 8 BLOWER 18975 V18975 24 V320905 V320905 9 TRAP ASSSEMBLY V320816 V320916 25 VENT DRAIN ELBOW ASSEMBLY V320903 V320903 0 FRONT DOOR V618929 3 V618929 3 26 COMBUSTION AIR INTAKE ASS Y V320915 320915 1 GROMMET VINYL 2500 550007 4 V350007 4 27 RADIATOR HOSE V410017 V410017 2 TAKE PIPE V19052 V19052 28 HOSE CLAMP 300276 2 V300276 2 3 VENT PIPE V18950 V18950 29 PARTS PACKAGE 50054182 50054183 4 BLOWER ASSEMBLY
69. within 296 of the listed input of 75 000 3 Make sure that the gas supply pressure to the furnace is within the allowable range of 5 5 to 14 WC pressure on natural gas and 11 0 to 14 0 WC on propane gas The pressure to the furnace must be checked while the furnace burner and any other gas appliances on the same supply system are operating using the 1 8 in NPT manifold pressure tap 36 All installations and services must be performed by qualified service personnel GAS PRESSURE CHART FOR VMA MODEL FURNACES SUPPLY PRESSURE MANIFOLD PRESSURE MAX 14 WC MIN 4 5 WC 3 5 3 WC MAX 14 WC PROPANE MIN 11 WC 10 0 3 WC TABLE 3 This gas furnace is equipped with a fixed orifice sized for the manifold pressure shown on the rating label The input can only be increased or decreased by adjusting the manifold pressure Remove the 1 8 threaded pipe plug located on the gas manifold Use a U tube manometer or recently calibrated pressure gage to measure the pressure To adjust the pressure remove the screw cap from the regulator on the gas valve and using the adjustment screw Decrease the pressure by turning the screw counterclockwise or increase it by turning the screw clockwise ANCAUTION ADJUSTMENTS TO THE LISTED PRESSURE MUST NOT EXCEED 0 3 WC A 0 3 WC adjustment will increase or decrease the input approximately 4 096 Replace screw cap when adjustment is complete The
70. y by closing its manual shut off valve at test pressures equal to or greater than 1 2 PSIG or 14 0 w c All installations and services must be performed by qualified service personnel A WARNING Copper and brass tubing and fittings except tin lined shall not be used if the gas contains more than a trace 0 3 grains per 100 cubic ft of hydrogen sulfide gas Check with your gas supplier A WARNING TURN OFF THE ELECTRICAL POWER to the furnace before attempting to change blower speed wiring AWARNING Turn off power to furnace before it is placed into service The gas piping system must have been leak tested by a qualified heating contractor in accordance with State Local and National Codes including the National Fuel Gas Code NFPA 54 ANSI Z233 1 Latest Edition A WARNING It may be necessary to purge the air out of the gas line for initial start up of the furnace after installation This should be done by a qualified heating contractor If excessive gas escapes when purging the gas supply at the union allow the area to ventilate for at least 15 minutes before attempting to start the furnace LP gas is especially dangerous because the specific gravity of LP gas allows it to accumulate at floor level at a dangerous concentration ANWARNING Heat exchanger oil will burn off on initial firing creating an unpleasant odor To prevent this odor from occurring more than once it is suggested that 1 A window s be opened 2 The thermos

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