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507867-02

Page 9 of 54

Issue 2128

Figure 8. 

Equipment in Confined Space - All Air from 

Outside

Figure 9. 

Equipment in Confined Space

(Inlet Air from Ventilated Crawl Space & Outlet Air to 

Outside)

Roof Terminated

Exhaust Pipe

Furnace

Ventilation

Louvers

(Crawl Space)

*Intake Debris Screen Provided

Inlet Air

Minimum

12 in. (305mm)

above Crawl

Space Floor

Coupling or

3 in. to 2 in.

Transition

(Field Provided)

* See Maximum Vent Lengths table

NOTE-The inlet and outlet air openings shall each have a 

free area of at least one square inch per 4,000 Btu (645mm

2

 

per 1.17kW) per hour of the total input rating of all equipment 

in the enclosure.

Figure 10. 

Equipment in Confined Space

(Inlet Air from Ventilated Attic & Outlet Air to Outside)

Ventilation Louvers

Inlet Air

(Minimum 12 in.

(305mm) above

Attic Floor)

Roof Terminated

Exhaust Pipe

Furnace

*Intake Debris

Screen

(Provided)

* See Maximum Vent Lengths table

NOTE-The inlet and outlet air openings shall each have a 

free area of at least one square inch per 4,000 Btu (645mm

2

 

per 1.17kW) per hour of the total input rating of all equipment 

in the enclosure.

Shipping Bolt Removal

Units with 1/2 hp and 3/4 hp blower motors are equipped 

with  three  flexible  legs  and  one  rigid  leg.  The  rigid  leg 

is  equipped  with  a  shipping  bolt  and  a  flat  white  plastic 

washer  (rather  than  the  rubber  mounting  grommet  used 

with a flexible mounting leg). See Figure 11. The bolt and 

washer must be removed before the furnace is placed into 

operation. After the bolt and washer have been removed, 

the rigid leg will not touch the blower housing.

Figure 11. 

Units with 1/2 HP and 

3/4 HP Blower Motors

Summary of Contents for 030-B12

Page 1: ...amage personal injury or loss of life Installation and service must be performed by a licensed professional installer or equivalent service agency or the gas supplier WARNING As with any mechanical eq...

Page 2: ...Issue 2128 Unit Dimensions FRONT VIEW SIDE VIEW Capacity A B C D in mm in mm in mm in mm 030 B12 045 B12 070 B12 17 1 2 446 16 3 8 416 16 406 1 5 8 194 090 C12 090 C16 110 C16 110 C20 21 533 19 7 8 50...

Page 3: ...lve Combustion Air Inducer Blower Access Door Combustion Air Pressure Prove Switch Cold End Header Box Control Box includes integrated ignition control transformer and interlock switch Blower Assembly...

Page 4: ...Snap bushing 1 Snap Plug 1 Wire tie 1 Condensate trap 1 Condensate trap cap 1 Condensate trap clamp 1 2 diameter debris screen 1 3 4 Threaded street elbow Check equipment for shipping damage If you fi...

Page 5: ...dards NOTE Furnace must be adjusted to obtain a temperature rise within the range specified on the unit nameplate Failure to do so may cause erratic limit operation and premature heat exchanger failur...

Page 6: ...ALL OF THE FOLLOWING CRITERIA ARE MET a Furnace must be in its final location The vent system must be permanently installed per these installation instructions b Furnace must be installed as a two pi...

Page 7: ...inated atmosphere Meet all combustion and ventilation air requirements as well as all local codes CAUTION In the absence of local codes concerning air for combustion and ventilation use the guidelines...

Page 8: ...a minimum free area of 1 square inch per 4 000 Btu 645 mm per 59 kW per hour of total input rating of all equipment in the enclosure see Figure 6 and Figure 7 It is also permissible to bring in air fo...

Page 9: ...let Air to Outside Ventilation Louvers Inlet Air Minimum 12 in 305mm above Attic Floor Roof Terminated Exhaust Pipe Furnace Intake Debris Screen Provided See Maximum Vent Lengths table NOTE The inlet...

Page 10: ...late Also consider gas supply connections electrical supply vent connection and installation and service clearances 24 inches 610 mm at unit front The unit must be level Do not connect the return air...

Page 11: ...th optional RAB Return Air Base Bottom return air Return air from both sides Bottom and one side return air FRONT VIEW SIDE VIEW 1 Unit side return air Opening 3 1 4 83 1 23 584 Overall Maximum 584 23...

Page 12: ...Left End Air Flow Air Flow Left Hand Discharge Bottom floor Right End Left End Air Flow Air Flow Top Plenum 1 in 25 mm Front 0 Back 0 Sides 0 Vent 0 Floor 0 Front clearance in alcove installation mus...

Page 13: ...lters This unit is not equipped with a filter or rack Afield provided filter is required for the unit to operate properly Table 1 list recommended filter sizes A filter must be in place whenever the f...

Page 14: ...vent pipe hangers Uniformly apply a liberal coat of PVC primer for PVC or use a clean dry cloth for ABS to clean inside socket surface of fitting and male end of pipe to depth of fitting socket Canad...

Page 15: ...et surface and end of pipe are wet with cement forcefully insert end of pipe into socket until it bottoms out Turn PVC pipe 1 4 turn Capacity VENT PIPE DIA in STANDARD CONCENTRIC Outdoor Exhaust Accel...

Page 16: ...blockage restriction leakage corrosion or other deficiencies which could cause an unsafe condition 3 Close all building doors and windows and all doors between the space in which the appliances remain...

Page 17: ...urnace NOTE In non Direct Vent installations combustion air is taken from indoors and flue gases are discharged outdoors In Direct Vent installations combustion air is taken from outdoors and flue gas...

Page 18: ...ck the terminations IMPORTANT Use Figure 24 to correctly size vent pipe diameter 030 045 070 090 110 Standard or Concentric See Table 3 Intake or Exhaust 1 1 2 2 2 1 2 or 3 Furnace capacity 1 Which te...

Page 19: ...26 n a 75 60 28 n a 97 97 78 78 9 36 21 70 55 23 92 92 73 73 10 31 16 65 50 18 87 87 68 68 Concentric Termination Elevation 0 10 000 ft Number of 90 Elbows Used 1 1 2 Pipe 2 Pipe 2 1 2 Pipe 3 Pipe Cap...

Page 20: ...65 50 18 82 82 63 63 8 31 16 60 45 13 77 77 58 58 9 26 11 55 40 8 72 72 53 53 NOTE Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total...

Page 21: ...n horizontal runs of exhaust pipe When transitioning up in pipe size use the shortest length of 2 PVC pipe possible When transitioning down in pipe size use at least 1 foot of 2 PVC pipe NOTE Exhaust...

Page 22: ...and guidelines listed in Combustion Dilution and Ventilation Air section must be followed Follow the next two steps when installing the unit in Direct Vent applications where combustion air is taken...

Page 23: ...take air inlet will not be obstructed by loose insulation or other items that may clog the debris screen 2 If intake air is drawn from a ventilated attic Figure 31 or ventilated crawlspace Figure 32 t...

Page 24: ...N A 3 in N A N A 9 9 18 18 35 35 47 47 20 to 1 7 to 17 1 1 2 in N A N A 15 N A 20 N A N A N A N A N A 2 in N A N A 9 8 18 16 32 29 30 30 2 1 2 in N A N A 5 N A 13 N A 24 N A 34 N A 3 in N A N A N A N...

Page 25: ...arance under veranda porch deck or balcony 12 Equal to or greater than soffit depth 3 feet 9m 12 3 feet 9m within a height 15 feet 4 5m above the meter regulator assembly 3 feet 9m 6 inches 152mm for...

Page 26: ...s 152mm for appliances 10 000 pliances 10 000 Btuh 3kw and 50 000 pliances 50 000 Btuh 15kw 6 inches 152mm for appliances 10 000 Btuh 3kw 12 inches 305mm for appliances 10 000 Btuh 3kw and 100 000 Btu...

Page 27: ...tallation codes the minimum allowed distance between the combustion air intake inlet and the exhaust outlet of other appliances shall not be less than 12 inches 305 mm IMPORTANT Details of Intake and...

Page 28: ...44 6 On field supplied terminations a minimum distance between the end of the exhaust pipe and the end of the intake pipe without a termination elbow is 8 and a minimum distance of 6 with a terminatio...

Page 29: ...045 and 070 models EXHAUST VENT Figure 41 Direct Vent Concentric Wall Termination 71M80 69M29 or 60L46 US 44W92 or 44W93 Canada Figure 42 STRAIGHT CUT OR ANGLE CUT IN DIRECTION OF ROOF SLOPE EXHAUST V...

Page 30: ...d be connected to the 2 or 3 PVC flue pipe as shown in the illustration Do not use an accelerator in applications that include an exhaust termination tee The accelerator is not required 2 As required...

Page 31: ...CUMULATION SIZE PER EXHAUST PIPE TERMINATION SIZE REDUCTION TABLE Figure 46 Non Direct Vent Field Supplied Wall Termination SIZE TERMINATION PER EXHAUST PIPE TERMINATION SIZE REDUCTION TABLE FIELD PRO...

Page 32: ...ermination Drain Trap assembled Figure 49 Kit 51W18 USA 15Z70 Canada Parts Identification and Assembly Exhaust from Furnace To Termination Exhaust from Furnace To Termination Kit 51W18 is shown Figure...

Page 33: ...n tape or appropriate pipe dope 3 Install the cap over the clean out opening at the base of the trap Secure with clamp See Figure 58 4 Install drain trap using appropriate PVC fittings glue all joints...

Page 34: ...iping from furnace must slope down a minimum of 1 4 per ft toward trap Figure 55 Evaporator Coil Using a Separate Drain Figure 56 Evaporator Coil Using a Common Drain Piping from furnace must slope do...

Page 35: ...507867 02 Page 35 of 54 Issue 2128 Figure 58 Trap Drain Assembly Using 1 2 PVC or 3 4 PVC...

Page 36: ...ide of unit See Figure 61 and Figure 62 4 Piping should be sloped 1 4 per 15 feet 6 mm per 5 6 m upward toward the gas meter from the furnace The piping must be supported at proper intervals every 8 t...

Page 37: ...ted WARNING Figure 61 Gas Piping Upflow Applications NOTE BLACK IRON PIPE ONLY TO BE ROUTED INSIDE OF CABINET FIELD PROVIDED AND INSTALLED GROUND JOINT UNION DRIP LEG MANUAL MAIN SHUT OFF VALVE Upflow...

Page 38: ...16 42 530 15 01 490 13 87 460 13 03 430 12 18 400 11 33 1 1 2 38 1 1 610 40 894 2100 59 46 460 41 34 1180 33 41 990 28 03 900 25 48 810 22 94 750 21 24 690 19 54 650 18 41 620 17 56 2 50 8 2 067 52 50...

Page 39: ...wer for service Complete the wiring connections to the equipment Use the provided unit wiring diagram and the field wiring diagram shown in Figure 66 Use 18 gauge wire or larger that is suitable for C...

Page 40: ...the heating speed 3 When there is a cooling demand the indoor blower will run on the cooling speed Generator Use Voltage Requirements The furnace requires 120 volts 10 Range 108 volts to 132 volts Th...

Page 41: ...507867 02 Page 41 of 54 Issue 2128 Figure 67 Typical Wiring Diagram...

Page 42: ...ARNING Danger of explosion Can cause injury or product or property damage Should the gas supply fail to shut off or if overheating occurs shut off the gas valve to the furnace before shutting off the...

Page 43: ...r to the unit 11 Set the thermostat to desired setting NOTE When unit is initially started steps 1 through 11 may need to be repeated to purge air from gas line 12 If the appliance will not operate fo...

Page 44: ...bilize observe the flame Flame should be stable and should not lift from burner Natural gas should burn blue 4 After allowing unit to stabilize for 5 minutes record manifold pressure and compare to va...

Page 45: ...s installation of a gas valve regulator spring which is provided with the gas conversion Kit LP Kits include low line pressure switch Table 13 Burner Orifice Conversion Kits at Varying Altitudes Capac...

Page 46: ...d and other spaces of the building 4 Close fireplace dampers 5 Turn on clothes dryers and any appliances not connected to the venting system Turn on any exhaust fans such as range hoods and bathroom e...

Page 47: ...ess panel in place Motor Nameplate__________Actual__________ Blower Speeds Follow the steps below to change the blower speeds 1 Turn off electrical power to furnace 2 Remove blower access panel 3 Disc...

Page 48: ...90 348 1270 271 1135 199 885 109 735 71 0 20 1355 349 1230 280 1100 207 850 119 680 81 0 30 1330 368 1205 291 1060 220 795 126 625 84 0 40 1295 378 1180 298 1025 226 755 134 570 91 0 50 1265 386 1140...

Page 49: ...06 1275 173 1160 135 0 20 1655 392 1460 273 1315 219 1230 185 1110 142 0 30 1615 408 1410 282 1290 225 1195 192 1065 151 0 40 1595 416 1365 295 1245 236 1155 203 1010 160 0 50 1560 429 1335 308 1200 2...

Page 50: ...33 1880 441 1715 353 1605 288 1435 210 2135 614 1885 421 1705 342 1595 280 1415 207 0 20 2085 648 1830 455 1665 362 1560 298 1360 220 2085 628 1830 437 1670 351 1545 293 1370 218 0 30 2040 663 1795 46...

Page 51: ...intake pipes and all connections for tightness and to make sure there is no blockage NOTE After any heavy snow ice or frozen fog event the furnace vent pipes may become restricted Always check the ven...

Page 52: ...ating correctly 19 Replace heating compartment access panel Table 17 Control Diagnostic Codes Integrated Control LED Codes Red LED Flash Code2 Diagnostic Codes Status of Furnace LED Off No power to co...

Page 53: ...s Problems detected during the inspection may make it necessary to temporarily shut down the furnace until the items can be repaired or replaced Instruct the homeowners to pay attention to their furna...

Page 54: ...height of eight 8 feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment The sign shall read in print size no less than...

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