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4

440 04 6001 00

Specifications  subject to change without notice.

FURNACE DAMAGE HAZARD

Failure to follow this caution may result in reduced

furnace life.
DO NOT redrill orifices. Improper drilling (burrs,

out

of

round holes, etc.) can cause excessive burner

noise and misdirection of burner flames. This can

result in flame impingement of heat exchangers,

causing failures. (See Figure 1.)

CAUTION

!

BURNER 

ORIFICE

A93059

Figure 1 

 

Orifice Hole

For proper operation and long term reliability the furnace

input rate must be /

2  percent of input rate on

furnace rating plate, or as adjusted for altitude.
The gas input rate on rating plate is for installations at

altitudes up to 2000 ft. (609.6M).

NOTICE

The NATURAL GAS manifold pressure adjustments in Table

4 compensate for BOTH altitude AND gas heating value. DO

NOT apply an additional de

rate factor to the pressures

shown in Table 4. The values in this Table and NOT

referenced to sea level; they are AS

MEASURED AT

ALTITUDE.
The heating content of natural gas at altitude may already

provide for a reduction in capacity or altitude. Refer to Table

4. No adjustments to the furnace may be necessary at

altitude for certain gas heating values.
Refer to the instructions provided in the factory-specified

Propane conversion kit for instructions for setting gas

manifold pressures for Propane applications.

In the USA, the input rating for altitudes above 2000 ft. (610

M) must be reduced by 2 percent for each 1000 ft. (305 M)

above sea level refer to Table 2. The natural gas manifold

pressures in Table 4 adjust for BOTH altitude and natural

gas heating value.
In Canada, the input rating must be reduced by 5 percent for

altitudes of 2000 ft. to 4500 ft. (610 to 1372 M) above sea

level. The natural gas manifold pressures in Table adjust

for BOTH altitude and natural gas heating value.

NOTE

:  For Canadian altitudes of 2000 to 4500 ft. (610 to

1372 M), use USA altitudes of 2001 to 3000 ft. (611 to 914
M) in Table 4

.

To adjust manifold pressure to obtain the proper input rate,

first, determine if the furnace has the correct orifice installed.

At higher altitudes or different gas heat contents, it may be

necessary to change the factory orifice to a different orifice.

Tables have been provided in the furnace installation

instructions to match the required orifice to the manifold

pressure to the heat content and specific gravity of the gas.

To do this:

1. Obtain average yearly gas heat value (at installed

altitude) from local gas supplier.

2. Obtain average yearly gas specific gravity from local

gas supplier.

3. Find installation altitude range for your installation in

the manifold pressure tables in Table 4.

4. Find closest natural gas heat value and specific grav-

ity in Table 4. Follow heat value and specific gravity

lines to point of intersection to find orifice size and

low-and high-heat manifold pressure settings for

proper operation.

5. Check and verify burner orifice size in furnace.

NEVER ASSUME ORIFICE SIZE. ALWAYS CHECK

AND VERIFY.

NOTICE

If orifice hole appears damaged or it is suspected to have

been redrilled, check orifice hole with a numbered drill bit of

correct size. Never redrill an orifice. A burr

free and squarely

aligned orifice hole is essential for proper flame

characteristics.

6. Replace orifice with correct size, if required by Table

4. Use only factory

supplied orifices. See EXAMPLE

1.

EXAMPLE 1:

0 - 2000 ft. (0 - 609.6M) altitude

Heating value = 1050 Btu/cu ft.

Specific gravity = 0.62

Therefore: Orifice No. 44

(Furnace is shipped with No. 44 orifices. In this example, all

main burner orifices are the correct size and do not need to

be changed to obtain proper input rate.)

Manifold pressure: 3.4-in. w.c. (847 Pa).

NOTE

:  To convert gas manifold Table pressures to Pascals,

multiply the in.w.c. value by 249.1 Pa/in. w.c. (1 in. w.c. =
249.1 Pa).

Check Inlet Gas Pressure

The inlet gas pressure must be checked with the furnace

operating in maximum heat. This is necessary to make sure

the inlet gas pressure does not fall below the minimum

pressure of 4.5 in. w.c.

1. Make sure the gas supply is turned off to the furnace

and at the electric switch on the gas valve.

2. Remove the 1/8 in. NPT plug from the inlet pressure

tap on the gas valve.

3. Connect a manometer to the inlet pressure tap on gas

valve.

4. Turn on furnace power supply.
5. Turn gas supply manual shutoff valve to ON position.
6. Turn furnace gas valve switch to ON position.
7. Jumper R and W thermostat connections at the

furnace control board.

8. When main burners ignite, confirm inlet gas pressure

is between 4.5 in. w.c. (1125 Pa) and 13.6 in. w.c.

(3388 Pa).

9. Remove jumper across thermostat connections to

terminate call for heat. Wait until the blower off delay

is completed.

10. Turn furnace gas valve electric switch to OFF

position.

Содержание R9MSB0601716B

Страница 1: ...in the following manner CAUTION Signal Words on Product Labeling Signal words are used in combination with colors and or pictures or product labels The signal word WARNING is used throughout this man...

Страница 2: ...eath WARNING signifies hazards which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage NOTE...

Страница 3: ...115vac terminal is energized whenever blower operates HUM 24vac terminal is only energized when the low pressure switch LPS is closed on a call for heat Prime Condensate Trap with Water CARBON MONOXID...

Страница 4: ...ions to match the required orifice to the manifold pressure to the heat content and specific gravity of the gas To do this 1 Obtain average yearly gas heat value at installed altitude from local gas s...

Страница 5: ...hould be clear blue almost transparent See Figure 12 i Remove jumper R to W j Reinstall manifold pressure tap plug from gas valve 2 Verify natural gas input rate by clocking meter NOTE Contact your HV...

Страница 6: ...exchangers or condensing flue gases in heat exchanger areas not designed for condensate S Shortened furnace life S Component damage Temperature rise must be within limits specified on furnace rating p...

Страница 7: ...nals when furnace is in low heat and after blower starts 4 Set heat anticipator on thermostat per thermostat instructions and install on sub base or wall 5 Install blower access door Electronic thermo...

Страница 8: ...743 3048 18 20 0 81 Derate multiplier factors are based on midpoint altitude for altitude range ON OFF Switch Regulator Seal Cap Regulator Adjustment Regulator Seal Cap under Cap 1 2 NPT Outlet 1 8 NP...

Страница 9: ...290 22 164 327 818 64 56 112 281 23 157 313 783 66 54 109 273 24 150 300 750 68 53 106 265 25 144 288 720 70 51 103 257 26 138 277 692 72 50 100 250 27 133 267 667 74 48 97 243 28 129 257 643 76 47 9...

Страница 10: ...10 440 04 6001 00 Specifications subject to change without notice 338309 201 Rev E A11602 Figure 5 Service Label Information...

Страница 11: ...2 42 3 3 42 3 4 915 825 43 3 6 43 3 7 43 3 8 42 3 2 850 44 3 8 43 3 5 43 3 6 43 3 7 875 44 3 6 44 3 7 43 3 4 43 3 5 4000 900 44 3 4 44 3 5 44 3 7 44 3 8 1219 925 44 3 2 44 3 4 44 3 5 44 3 6 950 44 3...

Страница 12: ...5 1075 1015 950 885 Red 3 2 5 394 1030 1025 1030 1010 985 940 905 855 805 735 0801716B SIDE BOTTOM Black 4 0 389 1650 1620 1640 1605 1555 1495 1425 1345 1255 1165 Yellow 3 5 381 1420 1425 1400 1370 13...

Страница 13: ...switch is 0 73 in W C The maximum make point of the switch is 0 83 in W C ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death There may be more than one el...

Страница 14: ...ND FIELD 24 V WIRING FIELD 115 208 230 460 V WIRING FACTORY 24 V WIRING FACTORY 115 V WIRING 208 230 OR 460 V THREE PHASE 208 230 V SINGLE PHASE BLOWER DOOR SWITCH WHT BLK WHT BLK NOTES Connect Y term...

Страница 15: ...e sure that it operates properly with the room thermostat Check all modes including Heat Cool and Fan 7 Check operation of accessories per manufacturer s instructions 8 Review Owner s Manual with owne...

Страница 16: ...8 Turn on electrical supply to furnace Blower Motor and Wheel Maintenance To ensure long life economy and high efficiency clean accumulated dirt and grease from blower wheel and motor annually The in...

Страница 17: ...aning Burners and Flame Sensor The following items must be performed by a qualified service technician If the burners develop an accumulation of light dirt or dust they may be cleaned by using the fol...

Страница 18: ...burner assembly without striking the igniter on surrounding parts c Inspect igniter for signs of damage or failure d If replacement is required remove the screw that secures the igniter on igniter bra...

Страница 19: ...supply circuit is on Cleaning Heat Exchangers The following items must be performed by a qualified service technician Primary Heat Exchangers If the heat exchangers get an accumulation of light dirt o...

Страница 20: ...ed Follow these procedures to winterize your furnace UNIT COMPONENT DAMAGE HAZARD Failure to follow this caution may result in damage to the furnace and other property damage Do not use ethylene glyco...

Страница 21: ...ner Manifold A11461 Figure 12 Burner Flame SET SCREW MOTOR WHEEL HUB MOTOR SHAFT FLAT SCREW MOTOR ARM GROMMET SCREW LOCATION BLO HSG ASSY BRACKET BRACKET ENGAGEMENT SEE DETAIL A CAPACITOR OR POWER CHO...

Страница 22: ...22 440 04 6001 00 Specifications subject to change without notice FLAME SENSOR BELOW BURNER FLAME ROLLOUT SWITCH BRACKET IGNITER IGNITER BURNER SUPT ASSY BURNER ASSY A11403 Figure 14 Burner Assembly...

Страница 23: ...y If the burner flame is proven the blower motor is energized on HEAT speed 25 sec after the gas valve GV is energized Simultaneously the electronic air cleaner terminal EAC 1 is energized and remains...

Страница 24: ...flash the status code of the previous fault or status code 11 1 short and 1 long flash if there was no previous fault After the control repeats the code 4 times the control will go through a brief com...

Страница 25: ...control will repeat the ignition sequence 3 more times before lockout 14 occurs If flame signal is lost during the blower on delay period blower will come on for the selected blower off delay Check t...

Страница 26: ...26 440 04 6001 00 Specifications subject to change without notice 339236 2 Rev A Figure 16 Wiring Diagram...

Страница 27: ...can cause personal injury property damage or death Consult a qualified installer service agency or your local gas supplier for information or assistance The qualified installer or service agency must...

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