OIL-FIRED CENTRAL FURNACE
Contents
1. Fig 5B PSC unit PSC Blower delay settings BLOWER ETTINGS O OFF DELAY w2 2 4 3 MIN FIF 2 FACTORY F FACTORY F N 4 N 8 All installations and services must be performed by qualified service personnel PSC air flow Speed Tap settings ALTERATIONS REQ D FOR A C Ce eel DESIGN EXTERNAL STATIC PRESSURE COOLING UNIT HTG HTG Speed by Input sd by Input Recommended CLG Speed Low Mid Fire Fire Ce o e e oo o Speed Tap Static Furnace Airflow CFM vs External Static pressure in WC Pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 930 915 912 910 822 774 730 ML 1155 1152 1130 1126 1085 1042 920 MH 1442 1432 1418 1382 1334 1293 1230 High 1802 1762 1705 1635 1569 1493 1428 Furnace Motor Current Draw Amps vs External Static pressure in WC Low 32. VSVA6VCLOOTAHL jauuosaed ad1Aras payyenb Aq powozI d q snu SadTA1aS pue suoyejpezsut TV Hs L1 L2 z A 120 V 60 Hz 1 PHASE gt a 77 WA L ie Ge iy LIMIT NAT AN Baw R tt UNCTION BO 3 ly OIL eel BURNER fal oll J w oL2 BL sed a BL CONTROL PANEL 120 vag__ 77 amp 0 VAG _ BK ak se VA Wa L W TRANSFORM ia NEUTRAL x s6 TRA IER be BR 0 CAA d F aX o od ar RELAY oF ag fal 14 kV cau j CHOKE R mmg CAPACITO 48 7 sw U ELECTRODES I I RBK o Jy No G aa N fo 6 Nae W BURNER MOTOR rn Y E er ae p BK O E W 16x4 SOLENOID VALVE BOX CABLE 3 LATING AIR FAN MOTOR FAN CONTROL jae 6 2 E Notes 5 4 p1 B 1 Using wirenuts connect power s
3. lC REAR DOOR FRONT DOOR WER ACCESS JOOR B FILTER RACK FILTER DRAFT CONTROL KET BURNER MOUNTING PLATE PLATE BURNER MOUNTING CAPACITOR N VESTIBULE CMPRTMNT OTOR CONTROL WIRE HARNESS MOTOR P x TRANSFORMER 24v gt CHOKE RELAY 16 All installations and services must be performed by qualified service personnel EFL201 AFG BECKETT BURNER R380704 Replacement parts Nozzle installed in burner 17 MODEL NOZZLE SIZE PART 50 x 80 A R380279 60 X 80 A R380398 75 X 80 A R380366 ITEM DESCRIPTION BECKETT PART TP PART 1 BURNER HOUSING ASSY 5874GY 2 AIR BAND ASSY 5151502 3 3709 4 3493 4292 5 2139 6 31231U 7 5880 3 21844 R380674 21755 R380654 9 21807U R380653 11 2256 R320815 12 5394 R380268 13 21805E R380644 14 2999 R380271 15 2454 R380241 16 7505B1500 R350431 17 5770 18 S1771U R380645 19 51304 20 7006U R350104 D4 N A N A 3616 R380270 AIR TUBE COMBINATION WIFLG bos ER SHEAR 58020165 R380108 BLAST TUBE ONLY AF60YHHSSS 23 HEAD W SHIELD KIT 360063 R380320 ELECTRODE NOZZLE ASSY NL6OYH R380706 24 ELECTRODES PAIR 5780 R380269 STATIC PLATE 3 5 8 U 3384 25 SPLINED NUT 3666 R320121 BULK HEAD FITTING 3488 R320120 All installations and ser
4. A B C D E VENTING DRAFT REGULATORS DUCT WORK AIR CONDITIONING SUPPLY RETURN AIRFLOW AND AIR TEMPERATURE FILTERS MOUNTED EXTERNAL TO FURNACE LIMIT POSITION AND LOCATION BURNER INSTALLATION BURNER SPECIFICATIONS AND APPLICATIONS ELECTRIC4AL CONNECTIONS BLOWER MOTOR SPEED SELECTION HEAT EXCHANGER CLEANING INSTRUCTIONS SERS INFORMATION SECTION OIL SUPPLY COMBUSTION AIR SUPPLY INSPECTION AREAS STARTING THE BURNER FILTER CLEANING AND LOCATIONS APPENDIX A REPLACEMENT PARTS LIST APPENDIX B WIRING DIAGRAMS BEGINNING PAGE i U Ne BP NANA HA HW 12 12 12 12 13 15 18 All installations and services must be performed by qualified service personnel II GENERAL INSTRUCTIONS READ BEFORE START OF INSTALLATION 1 The heating 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 All local codes and or regulations take precedence over the instructions in this manual and should be followed accordingly In the absence of local codes installation must conform with these instructions and regulations of the National Fire Protection Association and to the provisions of the National Electrical Code ANSI NFPA 70 1999 or latest edition 3 The installed furnace
5. may result in personal injury substantial property damage or death See Page 4 ZAWARNING Turn off the electrical power to the unit before attempting to change supply air blower speed wiring See Page 7 Z WARNING THE HEAT EXCHANGER MUST BE CLEANED BY A QUALIFIED SERVICE PERSON See Page 11 Z CAUTION DO NOT ATTEMPT TO MAKE REPAIRS YOURSELF See Page 12 Z WARNING The area around the furnace should be kept free and clear of combustible liquids and material especially papers and rags See Page 12 Z WARNING NEVER burn garbage or refuse in your furnace Never try to ignite oil by tossing burning papers or other material into your furnace See Page 12 Z WARNING This oil furnace is designed to burn No 1 or No 2 distillate fuel oil NEVER USE GASOLINE OR A MIXTURE OF OIL AND GASOLINE See Page 12 Z CAUTION DO NOT ATTEMPT TO START THE BURNER WHEN 1 Excess oil has accumulated 2 The furnace is full of vapors 3 The combustion chamber is very hot IF ONE OR MORE OF THESE CONDITIONS EXIST CONTACT A QUALIFIED SERVICE PERSON See Page 12 Z WARNING To avoid injury from moving parts hot surfaces or electrical shock shut off the power to the furnace before removing any furnace access doors to service the air filters See Page 13 All installations and services must be performed by qualified service personnel TABLE OF CONTENTS SECTION I SAFETY SECTION Il GENERAL INSTRUCTIONS A B C a BO Bt bo Ul U
6. 28 3 1 3 02 2 91 2 64 2 49 2 36 ML 4 18 4 02 3 91 3 74 3 59 3 34 2 95 MH 5 44 5 17 4 95 4 72 4 43 4 21 3 95 High 6 61 6 36 6 04 5 73 5 46 5 17 49 Speed Tap Static High Fire Temperature Rise vs External Static pressure in WC Pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 90 91 91 92 101 108 114 ML 72 72 74 74 77 80 91 MH 58 58 59 60 62 64 68 High 46 47 49 51 53 56 58 Speed Tap Static Mid Fire Temperature Rise vs External Static pressure in WC Pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 72 73 73 73 81 86 91 ML 58 58 59 59 61 64 72 MH 46 47 47 48 50 52 54 High 37 38 39 41 42 45 47 Speed Tap Static Low Fire Temperature Rise vs External Static pressure in WC Pressure 0 1 0 2 0 3 0 4 0 5 0 6 0 7 Low 60 61 61 61 68 72 76 ML 48 48 49 49 51 53 60 MH 39 39 39 40 42 43 45 High 31 32 33 34 35 37 39 10 All installations and services must be performed by qualified service personnel J HEAT EXCHANGER CLEANING INSTRUCTIONS Z WARNING THE HEAT EXCHANGER MUST BE CLEANED BY A QUALIFIED SERVICE PERSON It is important to inspect and clean the heat exchanger once a year or as necessary to remove any build up of soot A layer of soot on the inside of the heat exchanger will act as an insulator and reduce heat transfer resulting in less efficiency To clean the heat exchanger first turn off all power to the unit Remove clean out plugs the vent connector pipe to the chimney the burner and the burner mounting plate
7. to prevent condensation of moisture on the inside surface of the tank If the fuel tank runs completely dry it may be necessary to purge the lines of trapped air Contact a qualified technician to bleed the lines and restart the burner OIL SUPPLY VALVE Turn the oil supply valve off if the burner is shut down for an extended period of time B COMBUSTION AIR SUPPLY The burner requires a generous amount of clean combustion air to operate safely Lack of adequate combustion air can result in erratic operation of the burner noisy combustion or fuel odors in the air NEVER BLOCK THE FURNACE FROM THE SUPPLY OF COMBUSTION AIR If there is an exhaust fan dryer or return air grill in the furnace room there should be increased concern and additional efforts may be required to provide adequate combustion air to the furnace at all times C INSPECTION AREAS VESTIBULE The furnace vestibule area or burner compartment should be inspected by removing the front door of the furnace and looking for signs of excessive heat such as discoloration of components materials damage from rust or corrosion soot or carbon build up EXTERIOR OF FURNACE The furnace exterior should be inspected for signs of excessive heat such as discoloration of materials and damage from rust or corrosion FLUE PIPE VENT PIPE OR CONNECTOR The furnace vent pipe should be inspected for signs of rust corrosion pitting or holes in pipe and leakage around seams in pipe indicated by
8. AT 0 65 GPH 100 PSIG THAT PROVIDES AN 80 SPRAY ANGLE AND A HOLLOW SPRAY PATTERN WOULD BE ABBREVIATED IN THE TABLE AS 0 65 X 80 A INPUT CAPACITY SELECTION CHART HEATING CAPACITY NOZZLE SIZE GPH x TYPE BTU AR BecketAFG o oo oo 70 000 60000 0 50x80 A PT All rates shown achieved with 120 PSIG pump pressure for Beckett AFG Based on 2 domestic heating fuel oil having heating value of 140 000 BTU per gallon Based on thermal efficiency of 84 85 H ELECTRICAL CONNECTIONS NOTICE All field wiring must conform to local state and national codes A disconnect switch equipped with overcurrent protection e g a time delay type fuse or inverse time circuit breaker should be installed in the service line for shutting down and protecting the furnace and electrical system Since the furnace is entirely pre wired at the factory it is only necessary to connect the building electrical service lines to the two 2 pigtail wires extending from the fan center junction box The fan center is mounted inside the furnace burner compartment The service lines to the furnace should be no smaller than 14 Ga insulated copper wire with a temperature rating of 60 C or greater Connect an equipment ground wire to the furnace at the fan center junction box If wiring is run through metal electrical conduit it may not be necessary to run a separate equipment ground wire Consult local codes and authorities for specific
9. ATE 4 BURNER gt gee INSULATING SLEEVE ON OR AMULET IF APPLICABLE SEE BURNER APPLICATION CHART Fig 5 Burner insertion illustration Top view When mounting the burner the mounting plate Fig 4 must be removed to provide access to the area in front of the combustion chamber A fiber insulating sleeve or amulet is provided on the burner tube of specific burners see Fig 5 See burner application chart for type of insulator Do not allow the burner tube or end cone to physically touch or protrude into the chamber as excess heat transfer could result in destruction of the tube end cone or both The burner tube end cone is properly positioned when the end is inch back from the inside surface of the combustion chamber wall All installations and services must be performed by qualified service personnel G BURNER SPECIFICATIONS AND APPLICATIONS FURNACE MODEL BURNER BURNER HEAD STATIC MAXIMUM SHIPPED OIL THV1C SERIES SPEC INS MODEL amp TUBE PLATE NOZZLE NOZZLE PUMP NO LENGTH SIZE SIZE PRESSURE BURNER PSIG BECKETT AFG EFL201 AFG 4 5 3 5 8U 0 75X80 A 0 60X80 A INSULATOR S SLEEVE OR N NONE THE NOZZLE SIZE GIVES THE NOMINAL FLOWRATE IN GPH FOLLOWED BY THE SPRAY ANGLE IN DEGREE S AND THE SPRAY PATTERN EITHER A FOR HOLLOW CONE OR B FOR SOLID CONE FOR EXAMPLE A NOZZLE RATED
10. HIGHBOY FURNACE Fig 1 Acceptable locations for the air conditioner evaporator coil 3 All installations and services must be performed by qualified service personnel NOTICE The minimum coil pan clearance for a drum type heat exchanger is three inches unless specified otherwise by the individual coil manufacturer D FILTERS MOUNTED EXTERNAL TO FURNACE On highboy furnaces it is necessary to cut the return air opening in the side or rear casing depending upon the needs of the specific installation The filter rack is provided with the furnace refer to Fig 2 For your convenience 4 locator knock outs have been placed at the proper locations for the cutout on both the left and right side casings Cut opening between knockouts and screw filter rack in place PLEASE NOTE While scribing the return air opening the filter rack can be held in position by tape or similar temporary means iig 14 1 4 FLANCE FOR RETURN AIR DUCTWORK CONNECTION o 24 FLANGE FOR RETURN AIR DUCTWORK CONNECTION Fig 2 A typical filter rack and dimensions for the THV1C furnace Connect the return air plenum to the filter rack and slide the filter into place Dimensions for adapting the return air plenum to the filter rack are provided See Fig 2 E LIMIT POSITION AND LOCATION ZAWARNING The predetermined limit location on this oil fired furnace has been tested and approved Any attempt to relocate this safety control or repla
11. L E MASONRY CHIMNEY W INDUCER CHIMNEY W METAL LINER W INDUCER INITIAL SERVICE TESTS CO2 in stack pipe SERVICE SERVICE Operate burner Draft Over fire at least 10 3 5 Draft in stack pipe minutes before Smoke number starting tests Gross stack temp Furnace room temp Net stack temp Gross stack minus furnace room temp O O a Cat a Ls Efficiency P Nozzle size and spray Po Oil pump pressure Ll Operation of Controls P Burner Safety Controls P Check for oil leaks Po ae Sa Tests taken by Date NOTES INSTALLER NAME amp ADDRESS 14 All installations and services must be performed by qualified service personnel APPENDIX A Replacement Parts List 15 All installations and services must be performed by qualified service personnel Sa UNIT PTION HVICO72A PART NO QTY ION CHAMBER HEAT EXCHANGER CHAMBER RETAINER FLE LEFT SIDE CA BAFF BAFFLE RIGHT SIDE C OVER FIRE DRAFT OPENING TRIM PLATE CASING RIGHT SIDE gt LEFT SIDE PANEL TOP FRONT 4 2 5 GASKET FLUE COLLAR 6 N COLLAR CLEAN OUT PLUG ASSEMBLY EL OIL BURNER BECKETT NEL FRONT SEPARATOR
12. LLOWED FOR LEFT HAND SIDE VENTING APPLICATIONS The THV1C may be vented through a standard correctly sized chimney The THV1C may also be horizontally vented through a side wall The manufacturer of this furnace has available the Field model RFDVS 45 RFVOP 415 side wall vent kit for such applications When installing the RFDVS 45 RFVOP 415 side wall vent kit outside combustion air must also be applied to the burner The following table identifies application order information SIDE WALL VENTING APPLICATION ORDER INFORMATION FIELD VENT TERMINATION SIDE WALL VENT COMBUSTION AIR INTAKE KIT ACCESSORIES KIT HOOD KIT BURNER 15 application MAX BURNER SPECIFIC FOR COMBUSTION AIR APPLICATIONS ONLY PART NUMBER PART NUMBER PART NUMBER Beckett AFG RAOPS8393 RAOPS8394 RAOPS8397 The Field vent kit is set up with 4 inch diameter vent pipe with concentric through the wall vent termination inlet air vent hood The combustion air inlet pipe diameter is also 4 inch diameter For Beckett the combustion air inlet pipe will be reduced to 3 diameter with the Beckett side wall vent kit The side wall vent may be installed either through the upper knock out on the left side casing of the unit or vertically out the top opening of the vestibule The 4 flexible vent pipe included w Field vent kit is able to be installed at 2 clearance to combustibles The combustion air inlet can be installed through the either the lower left side ca
13. N WATTS juoserwyrony OF o om oF wars as sr see co sar 400 CFM TON WATTS 435 517 588 680 741 HIGH CFM 1803 1789 1810 1728 1644 soemo o oF on om wars eow nz me mo 7 1216 1258 1273 1222 1179 isowo ON o or on wens z ze sa as soa wamom o o or ers so See to so e 400 CFM TON WATTS HIGH 7 e a ES Be EEEE tris 350 CFM TON WATTS 173 223 284 355 400 3 COOLING NORMAL OFF OFF OFF CFM 1176 1208 1213 1197 1144 400 CFM TON WATTS 223 284 339 396 487 HIGH CFM 1341 1355 1355 1355 1317 OFF ON OFF 450 CFM TON WATTS 300 366 432 196 602 LOW ON OFF CFM 847 854 861 824 785 350 CFM TON WATTS 118 163 227 271 298 NORMAL ON OFF OFF CFM 951 971 984 400 CFM TON WATTS 170 200 282 HIGH CFM 1121 1127 1149 1076 1070 ON ON OFF 450 CFM TON WATTS 197 254 302 396 440 AIRFLOW DIP SWITCH SETTING EXTERNAL STATIC PRESSURE SETTING os o3 os o7 o9 EA ee MEDIUM z TAREE MEDIUM 1124 1152 1163 1152 1101 shete tata te 447 613 ECM Blower delay settings DIP SWITCH SETTING HEATING ON amp OFF DELAY OPTIONS swe DELAY ON DELAY OFF 1 MIN 3 MIN HEATING sws on Torr _ on NOTE The fan off delay for cooling is fixed at 60 seconds This is preset and non adjustable FACTORY SETTING All installations and services must be performed by qualified service personnel
14. OIL FIRED CENTRAL FURNACE Installation Operation and Service Manual With Users Information Section Models THV1C072A948SA THV1CO072A9V4SA A WARNING e Do NOT store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance Improper installation adjustment alteration service or maintenance can cause a fire or explosion resulting in property damage personal injury or loss of life For assistance or additional information consult a qualified installer or service agency These instructions should be e read prior to installing the furnace e retained for reference by qualified service personnel e reviewed before performing any service or maintenance Fismel CERTIFIED www ahridirectory org Intertek MO 513 ECN 5396 MA 141211 MADE IN USA I SAFETY SECTION This page contains various warnings and cautions found throughout the Oil Furnace Manual Please read and comply with the statements below Z AWARNING AND CAUTIONS Z WARNING This furnace is not to be used as a construction heater See Page 1 CAUTION MUST BE TAKEN NOT TO EXCEED 90 ROTATION OF THE FLUE ELBOW COUNTERCLOCKWISE OR RIGHT FROM THE VERTICAL POSITION See Page 2 ZAWARNING The predetermined limit location on this oil fired furnace has been tested and approved Any attempt to relocate this safety control or replace this safety control with a control that is not approved or is incompatible
15. allations and services must be performed by qualified service personnel E FILTER CLEANING AND LOCATION The air filters should be inspected each month and cleaned when dirty Cleaning the air filters frequently may reduce airborne contaminants from entering the furnace and depositing in the furnace duct system and home Z WARNING To avoid injury from moving parts hot surfaces or electrical shock shut off the power to the furnace before removing any furnace access doors to service the air filters The filter rack will be located between the return air plenum and the return air opening on the side of the furnace refer to figure 8 Slide the dirty filter out clean it with a mild soap and water solution Make sure filter is thoroughly dry before replacing se lt FILTER Fig 8 Location of the air filter on the typical highboy furnace 13 All installations and services must be performed by qualified service personnel COMBUSTION AND EFFICIENCY TESTING FOR OIL FIRED CENTRAL FURNACES Complete this form for each furnace installed Read instruction manual carefully before making tests Retain this form with furnace CUSTOMER NAME ADDRESS CITY STATE BURNER MODEL NO BLAST TUBE LGTH AIR SHUTTER OPENING HEATING INS OF MAX EST SYSTEM COMBUSTION CHAMBER CONDITION MATERIAL FURNACE MODEL TYPE OF VENTING SYSTEM MASONRY C METAL O SIDEWALL O MASONRY CHIMNEY CHIMNEY POWER VENTER CHIMNEY E META
16. ce this safety control with a control that is not approved or is incompatible may result in personal injury substantial property damage or death All installations and services must be performed by qualified service personnel F BURNER INSTALLATION NOTE The burner is factory installed on this furnace NOTICE Remove all cardboard packing from around chamber before installing burner The oil burner will mount on three stud mounting bolts on the lower mounting plate covering the opening in the front of the heat exchanger The end of the burner tube should be inserted no further than 1 4 inch back from the inside surface of the combustion chamber A distance further than 1 4 inch back from the inside chamber wall may cause impingement and sooting This unit is equipped with a chamber retainer refer to Fig 4 This retainer secures the chamber during shipping and helps to maintain insertion depth DO NOT remove this retainer when installing burner OVERFIRE DRAFT BURNER MOUNTING PLATE G ASKET ACCESS COVER BURNER MOUNTING PLATE BURNER MOUNTING BURNER STU MOUNTING 3 LATE COMBUSTION CHAMBER OVERFIRE DRAFT AC SS CHAMBER RETAINER OVERFIRE DRAFT ACCESS PORT ase Fig 4 Typical location of the overfire air tap and components in burner mounting plate area EAT EXCHANGER DRUM o aina CHAMBER i i ae NANN LN BURNER MOUNTING PL
17. clearance of 24 inches is recommended for passage to all points on the furnace requiring service access NOTE The THV1C furnace may be installed on combustible flooring NOTE The THV 1C furnace is approved for closet installation If the furnace is installed in a closet it requires two openings in the closet door for combustion air each having a minimum area of 162 sq inches This free area intentionally exceeds the recommended minimum free area of 2 square inches per 1000 BTUH of input rate All installations and services must be performed by qualified service personnel A VENTING NOTE On the THV1C it is possible to rotate the flue elbow which is factory installed for vertical discharge 90 counterclockwise from the vertical position to adapt to various venting systems A CAUTION MUST BE TAKEN NOT TO EXCEED 90 ROTATION OF THE FLUE ELBOW COUNTERCLOCKWISE OR RIGHT FROM THE VERTICAL POSITION ROTATION OF FRONT FLUE ELBOW When an installation requires that the flue exit out the left hand side casing on a front flue unit remove screw securing the 90 deg elbow and rotate it 90 counterclockwise Then remove knock out in side casing and extend vent through the opening A trim collar may be ordered from the manufacturer of this furnace to hide the gap around the flue pipe This trim collar however is not required for operation Trim collar gasket part numbers s R14121 R330073 NOTE ROTATION OF FLUE PIPE IS ONLY A
18. minimum requirements All installations and services must be performed by qualified service personnel I BLOWER MOTOR SPEED SELECTION ZAWARNING Turn off the electrical power to the unit before attempting to change supply air blower speed wiring The furnace comes from the factory with the proper cooling speed selected and the heat rise set to approximately 70 F on mid fire The heat rise is determined by the nozzle size and the switch selection on the control board located in the blower compartment for ECM models or blower speed taps for PSC models For ECM unit switches 7 amp 8 are used to select the proper blower speed for heating refer to figure 5A and page 8 For PSC unit refer to figure 5B and page 10 for blower speed tap selections FE a c pine oI 2 59 4 5 N oa l L i A OFF i S j ey Sat aw oS O EER 3 i AWARNING ie qh ee o WS A m o Fig 5A ECM unit All installations and services must be performed by qualified service personnel ECM air flow DIP switch settings outdoor dip switch setting external static corre unit size airflow setting ipo cone ore oe aoe eel eer ae 350 CFM TO
19. must be level and positioned in a central location with respect to outlet registers It should be located near the chimney to minimize any horizontal run of flue pipe which may be required 4 A furnace installed in a residential garage must be installed so the burner and ignition source are located higher than 18 inches above the floor unless the required combustion air is taken from the exterior of the garage Also the furnace must be located or protected to avoid physical damage by vehicles Z WARNING This furnace is not to be used as a construction heater 5 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 and burn whether flame resistant or not NON COMBUSTIBLE MATERIAL Material that is not capable of being ignited and burned Such materials consist entirely of or a combination of steel iron brick tile concrete slate or glass MINIMUM CLEARANCES TO COMBUSTIBLE MATERIALS FROM TOP amp TYPE OF UNIT MODEL NO SIDES OF FRONT SIDES OF SE REAR FURNACE PLENUM HIGHBOY THVIC 0 Note 1 T 0 Notes THV1C front clearance 6 for Closet 24 for Alcove The minimum clearances listed in the preceding table are for fire protection Clearance for servicing the front of the furnace should be at least 24 inches A
20. rated it must be equipped with a means to prevent operation of either unit unless the damper is in the full heat or cool position The supply return airflow shall be set to obtain an air temperature rise across the furnace in the range of 55 to 85 F Since the flow resistance of each duct system is slightly different the airflow fan speed may have to be changed in the field to achieve a satisfactory temperature rise One way to measure the temperature rise across the furnace is to insert temperature measuring devices e g thermometers into the return air duct and into the supply air duct about 12 inches from the furnace After the furnace has been firing continually for over 20 minutes read the temperature difference between the two 2 thermometers The temperature difference should not exceed 85 F nor be less than 55 F A temperature rise of 70 F is considered to be optimum for comfort The blower fan speed fan is adjusted by changing the fan motor winding energized by the control system The furnace is set on fan speed ML at the factory refer to page 13 of this manual To adjust the fan speed change corresponding wire from the appropriate fan speed to the HEAT tap on the control The duct system should again follow the current design standard of Air Conditioning Contractors of America ACCA or ASHRAE Fundamentals volume The most common location for the A shaped coil A style is shown in Fig 1
21. s When removing the clean out plugs remove the screw at the 12 o clock position Then pull clean out plug straight back SCREW cee EXCHANGER Fig 6 Clean out plug removal With access to the inside of the heat exchanger through the burner area clean out openings and vent pipe connection it is possible to use a long flexible wire brush and an industrial type vacuum cleaner to remove any soot build up NOTE A one inch outside diameter vacuum cleaner hose will fit into the radiator To vacuum and brush the outer radiator of the heat exchanger go through the clean out openings in both directions as shown in figure 7 below CLEANOUT OPENING CLEANOUT OPENING Fig 7 Recommended method and device for cleaning inside of heat exchanger Reassemble the furnace to its original construction Remount the burner being certain that the air tube is properly inserted into the chamber opening see section F If heavy soot deposits were found in the heat exchanger this may indicate the burner is out of adjustment When returning clean out plugs to their original position insert plug and replace screw at the 12 o clock position This is sufficient for sealing the access tube 11 All installations and services must be performed by qualified service personnel IHI USERS INFORMATION SECTION A OIL SUPPLY Do not allow the fuel tank to run completely empty During the summer keep the tank full
22. sing knock out or the lower right side casing knock out All installations and services must be performed by qualified service personnel B DRAFT REGULATORS A draft regulator is supplied with the furnace and should be installed according to the regulator manufacturer s recommendations With the burner operating use a draft gauge to adjust the regulator to the proper setting refer to the instructions enclosed with draft regulator to adjust to the proper setting When the burner air supply and draft are properly adjusted the overfire draft should be a negative 01 to 02 WC as measured at the 5 16 overfire air tap See Fig 4 This tap is provided in the upper burner mounting plate To measure the flue draft punch a small hole in the vent connector pipe as close to the furnace as possible and always before the draft regulator Note 1 Draft overfire may be positive for high fire applications but not to exceed 02 WC C DUCT WORK AIR CONDITIONING SUPPLY RETURN AIRFLOW AND AIR TEMPERATURE If the furnace is used in connection with summer air conditioning cooling the furnace should be installed parallel with or on the upstream side of the evaporator coil to avoid condensation in the furnace heat exchanger If the cooling unit is installed with a parallel flow arrangement dampers or other means used to control flow of air should be provided to prevent chilled air from entering the furnace If such a damper is manually ope
23. soot or condensate streaks CHIMNEY OR VENTING SYSTEM The furnace venting system should be inspected for signs of rust corrosion pitting or holes and signs of condensation or moisture leakage from the venting system If any of the above symptoms are evident call a qualified heating contractor for assistance Z CAUTION DO NOT ATTEMPT TO MAKE REPAIRS YOURSELF Z WARNING The area around the furnace should be kept free and clear of combustible liquids and material especially papers and rags Z WARNING NEVER burn garbage or refuse in your furnace Never try to ignite oil by tossing burning papers or other material into your furnace Z WARNING This oil furnace is designed to burn No 1 or No 2 distillate fuel oil NEVER USE GASOLINE OR A MIXTURE OF OIL AND GASOLINE Z CAUTION DO NOT ATTEMPT TO START THE BURNER WHEN 1 Excess oil has accumulated 2 The furnace is full of vapors 3 The combustion chamber is very hot IF ONE OR MORE OF THESE CONDITIONS EXIST CONTACT A QUALIFIED SERVICE PERSON D STARTING THE BURNER 1 Turn the main service switch to OFF position 2 Set thermostat substantially above room temperature 3 Open shut off valves in oil supply line to burner 4 Turn service switch to furnace ON If burner starts and runs but stops again on lockout it may be necessary to bleed the lines or make burner combustion air adjustments Contact a qualified service person to adjust and start burner 12 All inst
24. upply wire L1 to pigtail marked 1 and wire L2 y to pigtail marked 2 in fan center Connect an earth grounding wire to ground wire 6 terminal in J box i 2 If any electrical wiring must be replaced new wiring must have an insulation type rated for 105 C or greater LEGEND 3 Use only copper conductors for all field and replacement wiring EE FIELD WIRING 4 For adequate overcurrent protection maximum acceptable size time delay type fuse or inverse time circuit breaker refer to name plate 5 Typical room thermostat anticipator setting is 0 1 A 6 Use Class type electrical wiring to make thermostat connections to fan center and oil primary safety control 7 Electrical schematic shown with heating system cooling system if equipped and fan off SHED WITH FL
25. vices must be performed by qualified service personnel APPENDIX B Wiring Diagrams THV1C072A948SA a nn T STAT Sey vay al R Gj R NW YA ee Teil ty i My uly og WH QA af I SJ fl l EEE DELAY SW2 SWITCH SETTINGS LMT AE 06 N F 0FF Eni es Ane A ON DELAY OFF DELAY fe fo sw2 2 1 SEC 4 3 MIN ml BL FF FF 2 ue FACTORY F N FACTORY F N 4 o BURNER J aN NF fF fs HR BK We Wifo_2 i vIn 8 BK OR lup SS aera Seems A i d O A x ps9 J Y 3f BK Whcnitor BL e BL IIGNITOR TRANSFORMER Wre BK VIOLET VALVE BECKETT THUMIDIFIER CAD BURNER CELL HEATING SPEED BY INPUT LOW FIRE MID FIRE HI FIRE COOLING SPEED ML MH LOW ML MH ML ML MH MH FS ML MH H ens eee FIELD WIRING 4 ML MH H FACTORY G BLOWER SPEED TAPS COOL A C Tap HEAT Heating Tap LOW Constant air or Dehumidifier 18 6I X LW C T ONS BLOCKED VENT KIT REQ R g SCHEMATIC
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