Manualshelf

Installation Guide

ManualsBrandsGOODMAN ManualsForced Air Furnaces97% AFUE 100,000 BTU Multi Positional Modulating Variable Speed Natural Gas Furnace with 21 in. Cabinet
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• If the heat differential is greater than 2 degrees, the furnace control board will follow the conventional 2-Stage
algorithm, equivalent to a W2 request and be reflected in the heat current demand status %.
• The circulator will operate per the heat airflow profile.
HEATING OPERATION WITH CTK02**, CTK03** & CTK04** THERMOSTAT (MODULATING COMMUNICATING)
• When the Thermostat Heat Setup DIP switch is set to 1-Stage heat, the furnace control board operation will be
compatible with a modulating communicating thermostat (CTK02**, CTK03 or CTK04).
• When a call for heat is sent, the furnace will go through the Light Off Sequence, at which time the Heat Current
Demand Status will still show 0%. After the successful Light Off Sequence and expiration of the Ignition Stabilization
Period:
• The furnace control board adjusts to the low firing rate.
• After 2 minutes, the furnace control board accepts the specific Heat Requested Demand.
• If the differential is 2 degrees or less, the heat current demand status will show 50%.
• If the specific heat requested demand is above 2 degrees, the heat current demand status will track the specific
heat requested demand.
• The circulator fan will operate per the heat airflow profile.
CONDENSATE DRAIN TRAP PRIMING
The drain trap MUST be primed prior to furnace startup. To prime, fill the drain trap with water. This ensures proper furnace
drainage upon startup and eliminates the possibility of flue gases escaping through the drain system. Please see requirements in
Condensate Drain Lines & Drain Trap section.
FURNACE OPERATION
Purge gas lines of air prior to startup. Be sure not to purge lines into an enclosed burner compartment. Follow NFPA 54, National
Fuel gas Code 8.3 for proper purging methods. In Canada, follow approved purging methods in B149.1.
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, etc.) have been appropriately installed.
FURNACE STARTUP
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.
NOTE: This furnace is equipped with an ignition device which automatically lights the burner. Do not try to light the burner
by hand.
5. Move the furnace gas valve manual control to the OFF position.
6. Wait five minutes then smell for gas. Be sure to check near the floor as propane is heavier than air,
7. If you smell gas after five minutes, immediately follow the Safety Considerations on page 4 of this manual. If you do
not smell gas after five minutes, move the furnace gas valve manual control to the ON position.
8. Replace the burner compartment door.
9. Open the manual gas shutoff valve external to the furnace.
10. Turn on the electrical power to the furnace.
11. Adjust the thermostat to a setting above room temperature.
12. After the burners are lit, set the thermostat to desired temperature.
FURNACE SHUTDOWN
1. Set the thermostat to the lowest setting.
The integrated control will close the gas valve and extinguish flame. After the blower off delay expires, the circulator blower
de-energizes.
2. Remove the burner compartment door and move the furnace gas valve manual control to the OFF position.
3. Close the manual gas shutoff valve external to the furnace.
4. Replace the burner compartment door.