Iprepurge | Lennox International Inc G32Q3-100, G32Q5-125, G32Q5-100

HEATINGSEQUENCECONTINUED

NORMALHEATINGMODEABNORMALHEATINGMODE

IPREPURGE

IPRESSURESWtTCHCLOSED?

GAS VALVE DE-ENERGIZED.

!11INDOOR BLOWER DE-ENERGIZED,(Seetop of previous page.)

L'WO'STAGE'OOEI S,N";L;'S_;_%T

COMBUSTION AIR INDUCER ON FOR 2.5 MINUTES,

	CALLFOR 2ridSTAGE		2ridSTAGEON DELAY
	HEAT(HIGHHEAT)		ON CONTROLBOARD
	FROM THERMOSTAT	COMPLETE (B, 12 OR 15 MIN
I	INDOOR BLOWER ON
	HIGH HEATING SPEED?
		1		2.5
		1		MINUTES
I COMBUSTION AIR BLOWER ON HIGH SPEED?
I	HIGH HEAT PRESSURE		SWITCH CLOSED?	I
	YES	_
I	HIGH HEAT GAS VALVE OPEN? (8 SEC. DELAY)			_'NO

CONTROL CHECKS: FLAME PRESENCE, CLOSED I PRIMARY LIMIT, CLOSED PRESSURE SWITCHES, r

CONTINUOUSLY CLOSED ROLl.OUT SWITCH (dudng heating cycle).

SEE PREVIOUS SEQUENCES FOR FAILURE MODES.

DEMAND FOR HEAT SATISFIED.	I
THERMOSTAT OPENS.

GAS VALVE DE-ENERGIZED.		]

COMBUSTION	AIR BLOWER	I
POST-PURGE	- 5 SECONDS.
INDOOR BLOWER		J
SELECTED TIME OFF DELAY.

PRESSURESW,TC c

:_ _o

PRESSURE SWITCH WATCHGUARD

COMBUSTION AIR INDUCER

DE-ENERGIZED.

5-MINUTE DELAY

COMBUSTIONiNDUCER ONAIR. I

Page 30

Image 30

Lennox International Inc G32Q3-100 Iprepurge, Combustion AIR Inducer on for 2.5 Minutes, Heathighheat On Controlboard

Contents

Lennox TOP View AIR Outlet Access AssemblyAccess Panel AIR Door Interlock Switch Inches mrn Insta!iatton Setttng Equipment Shipping Damage Bottom Return Air Applications Bottom Return Filter InstallationSide Return Filter Installation in.turn Knockout Pattern for Bottom Return AIR Application Filter Door Assembly Piping and Fittings SpecificationsSupply Air Plenum OUT Termination KitsG32-100 or -125 with 3 IN. Venting BTU Iventingractl es Resized to approach the minimum size as deter Pipe Wallringkit Topview Exhaust Termination Intake OutsidewallWall Termination Wall Ringtermination Side View Front View ExhaustFront View ,, l/EXHAUST Vent Exhaarus Nipplebootorcap Adapter Use the provided condensate drain adapter 3/4For Right-Hand Side Condensate Exit Left Side Piping Condensate PlumbingGroundjoint type Right Side Piping Electrostatic Discharge ESD Connections factory- and field-installed for gas leaksPrecautions and Procedures GAS Pipe Capacity ft.3/hr Im31hrl Hole in the cabinet. a snaphole plug is providedto Interior MAKE-UP BOX InstallationExterior MAKE-UP BOX Installation G32Q and Condensing Unit G32Q Control BOX Surelight Integrated Control Board Typical G32Q Field Wiring Diagram G32Q TWO-STAGE Control Board Typical G32Q Schematic Wiring Diagram Turn gas valve knob to on position For Your Safety Read Before OperatingHoneywell VR8205 Series GAS Valve GAS Valve Shown in OFF Position Operation sequence followssteps 1 through4 as out Manifold Pressure Measurement & Adjustment KBtuhDIFFERENTIALPRESSURESWITCHCIRCUITRY Temperature Rise Annual ServiceBlower Speeds Cleaning DuralokPlus TM Heat Exchanger Bushing.Reconnect wires275F 135C Cleaning the Bumer Assembly Reinstallthe screws to secure the burner box cover Heating Parts CabinetBlower Parts Simultaneous Heating Sequence Normal Heating ModeAbnormal Heating Mode Operation Flame Signal Normal Heating Mode AbnormalIndoor Blower on Delay Begins GAS Valve OFF. Combustion AIR Iprepurge High Heat GAS Valve OPEN? 8 SEC. DelayPressure Switch Watchguard Combustion AIR Inducer Combustion AIR Inducer on for 2.5 Minutes Normal Cooling Mode Abnormal Cooling Mode GPRRoOuPNEDRELYI Heating Section InstallerJob Number TH Ermostat