Djustment; Furnace Operation; Urnace Tart Up; Urnace Hutdown - Goodman *MH8 Installation Instructions Manual

S S S S S - - - - - P P P P P
T T T T T A R A R A R A RT T T T T A R U P U P U P U P U P R R R R R O C E D U R E O C E D U R E A N D O C E D U R E O C E D U R E O C E D U R E
•
R and G thermostat contacts close, initiating a call for fan.
•
Integrated control module performs safety circuit checks.
•
Circulator blower is energized on low heat speed. Electronic
air cleaner terminals are energized.
•
Circulator blower runs, integrated control module monitors
safety circuits continuously.
•
R and G thermostat contacts open, completing the call for
fan.
•
Circulator blower is de-energized. Electronic air cleaner
terminals are de-energized.
•
Furnace awaits the next call from thermostat.
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T T T T T A R A R A R A RT T T T T A R U P U P U P U P U P R R R R R OCEDURE OCEDURE OCEDURE OCEDURE OCEDURE
Furnace must have a 115 VAC power supply properly connected
and grounded. Proper polarity must be maintained for correct op-
eration. An interlock switch prevents furnace operation if the blower
door is not in place. Keep the blower access door in place except
for inspection and maintenance.
This furnace is also equipped with a self-diagnosing electronic con-
trol module. In the event a furnace component is not operating
properly, the control module LED will flash on and off in a factory-
programmed sequence, depending on the problem encountered.
This light can be viewed through the observation window in the
blower access door. Refer to the Troubleshooting Chart for further
explanation of the lighting codes.
Follow the start-up and adjustment items, refer to further informa-
tion in Section XIII, Operational Checks (see table of contents, pages
2-3 for page number)..
F F F F F
URNACE URNACE URNACE URNACE URNACE OPERATION OPERATION OPERATION OPERATION OPERATION
Purge gas lines of air prior to start-up. Do not purge lines into an
enclosed burner compartment.
Check for leaks using an approved chloride-free soap and water
solution, an electronic combustible gas detector, or other approved
method. Verify that all required kits (propane gas, high altitude,
etc.) have been appropriately installed.
NOTE: NOTE:
NOTE: NOTE: NOTE: An interlock switch prevents furnace operation if the blower
door is not in place. Keep the blower access doors in place except
for inspection and maintenance.
F F F F F S S S S S - - - - -
URNACE URNACE URNACE URNACE URNACE TART TART TART TART TART UP UP UP UP UP
1. Close the manual gas shutoff valve external to the furnace.
2. Turn off the electrical power to the furnace.
3. Set the room thermostat to the lowest possible setting.
4. Remove the burner compartment door.
NO NO NO NO NOTE: TE: TE: TE: TE: This furnace is equipped with an ignition device which
automatically lights the burner. Do not try to light the burner by
hand.
5. White-Rodgers Model 36G54: Push the switch to the OFF
position.
A A A A A
A N D A N D A N D A N D D J U D J U D J U D J U D J US T M E N T S T M E N T S T M E N T S T M E N T S T M E N T
A A A A A A A A A A
N D N D N D N D N D D J U D J U D J USTMENT D J U D J U STMENT STMENT STMENT STMENT
6. Wait five minutes to clear out any gas. Then smell for gas,
including near the floor.
7. If gas can be smelled following the five minute waiting period
in Step 6, immediately follow the instructions on Page 3 of
this manual. If you do not smell gas after five minutes:
White-Rodgers Model 36G54: Push the switch to the ON
position.
8. Replace the door on the front of the furnace.
9. Open the manual gas valve external to the furnace.
10. Turn on the electrical power supply to the furnace.
11. Set the room thermostat to the desired temperature.
NO NOTE: NO TE: TE: TE: There is an approximate 30 second delay between thermo-
NO NO TE:
stat energizing and burner firing.
F F F F F S S S S S
URNACE URNACE URNACE URNACE URNACE HUTDOWN HUTDOWN HUTDOWN HUTDOWN HUTDOWN
1. Set the thermostat to lowest setting.
2. Turn off the electrical power supply to the furnace.
3. White-Rodgers Model 36G54: Push switch to the OFF position.
4. Close manual gas shutoff valve external to the furnace.
5. Replace the door on the unit.
G G G G G S S S S S P P P P P M M M M M
AS AS AS AS AS UPPLY UPPLY UPPLY UPPLY UPPLY RESSURE RESSURE RESSURE RESSURE RESSURE
T
O PREVENT UNRELIABLE OPERATION
INLET GAS SUPPLY PRESSURE
RATING PLATE WITH ALL OTHER
.
OPERATING
HIGH VOLTAGE !
D
ISCONNECT ALL POWER BEFORE
. M
INSTALLING THIS UNIT ULTIPLE
. F
BE PRESENT AILURE TO DO
,
DAMAGE PERSONAL INJURY
M M M M M S S S S S S S S S S
ODELS ODELS ODELS USING ODELS ODELS USING USING USING USING INGLE INGLE INGLE INGLE INGLE TAGE TAGE TAGE TAGE TAGE
The line pressure supplied to the gas valve must be within the
range specified below. The supply pressure can be measured at the
gas valve inlet pressure tap or at a hose fitting installed in the gas
piping drip leg. The supply pressure must be measured with the
unit OFF. To measure inlet pressure, use the following procedure.
22
EASUREMENT EASUREMENT EASUREMENT EASUREMENT EASUREMENT
CAUTION
OR EQUIPMENT DAMAGE
MUST BE AS SPECIFIED ON THE
HOUSEHOLD GAS FIRED APPLIANCES
WARNING
SERVICING OR
POWER SOURCES MAY
SO MAY CAUSE PROPERTY
.
OR DEATH
G G G G G V V V V V
AS AS AS AS AS ALVES ALVES ALVES ALVES ALVES
,
THE
UNIT