Lennox International Inc G50UH-60D-135, G50UH-48C-110, G50UH-36C-110, G50UH-36B-090 YEs

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SURELIGHT ® CONTROL

CONTINUOUS FAN SEQUENCE OF OPERATION

I	LED: SLOW FLASH RATE REMAINS	!
		I
	UNCHANGED THROUGHOUT SEQUENCE.	I

MANUAL FAN SELECTION MADE AT THERMOSTAT.

CONTROL (G) ENERGIZES INDOOR BLOWER AT

FAN SPEED. EAC TERM. IS ENERGIZED.

		/	HUM TERM. ENERGIZES
THERMOSTAT	CALLS FOR HEAT (W).	I--l't	HUM TERM. ENERGIZES
THERMOSTAT	CALLS FOR HEAT (W).	I--l't	WITH COMB. AIR INDUCER.
	YEs /		WITH COMB. AIR INDUCER.	I
NO	YEs /			I
THERMOSTAT CALLS FOR COOLING.
_YES		AFTER	NORMAL DELAY.
_YES

I INDOOR BLOWER SWITCHES TO COOL SPEED.

		I	AND HUM TERMINAL ARE DE-ENERGIZED.
		I	THERMOSTAT		OPENS. COMBUSTION AIR INDUCER I
THERMOSTAT	OPENS.
1					I
					I
			AFTER DELAY HEAT SPEED DE-ENERGIZED.
		J INDOOR BLOWER SELECTED TIME OFF DELAY BEGINS. I
			(bower	rema	ns energ zed dur ng cont nuous fan mode).
t	INDOOR BLOWER	SWITCHES	TO FAN	"4
t	SPEED, EAC TERM,	REMAINS ENERGIZED,		J

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Contents G50UHX Series Supply AIR Gasket FlueTransition FlueBoxGasket HeatExchanger FlueCollectorBoxPackage 1 of 1 contains Wheninstalled,thisfurnacemustbeelectricallygrounded Canada,referto the standardCSAB149installation codes AcautionWiTER/ Room Air from InsideMm at unit front. The unit must be level Equipment in Confined Space ALL AIR from Outside27-5/8 Side View Front ViewRemoving the Bottom Panel Leveling Bolt Installation Inches mmRemovingthe Bottom Panel Leveling an Upflow UnitHorizontal Application Unit Installed on Platform Combustion Air Inducer Filter SizeSupply Air Plenum HoleThelatesteditionof NationalFuelGasCodeNFPA54 Venting Using a Masonry ChimneyOutletopeningSeefigure15 Vent ConnectionSingle appliance Common Venting Using Tile-Lined Interior Masonry ChimneCombined Vent Connector Minimum Vent capacityMaximum Horizontal Inches mm MIN MAX Serving a Single Category I Appliance Type B Double-WallVents with Type B Double-Wall Connectors Serving Two or More Category I AppliancesVent Removal of the Furnace from Common VentPropaneInstallationCodesinCanada Gas Pipe Capacity ft3/hr m3/hrLeak Check Precautions and ProceduresInterior MAKE-UP BOX Installation Electrostatic Discharge ESDPowER @1HsuN,T INTERIORMAKE-UP BOX InstallationTypical G50UHX Field Wiring Diagram Zk for Correct Number of SecondaryG5OUHX SotFor Your Safety Read Before Lighting ManifoldHoneywell VR8205 Gas Valve with ON/OFF Switch RevolutionPrimary and Secondary Limits Checkunitforproperdraft FlueAnd ChimneyG50UHX Burner & Heat Exchanger Removal Ak Caution Diagnostic Normal Heating Mode Abnormal Heating Mode Surelight Control=-l YESlNormalcooling Mode Abnormalcooling Mode YESlYEs BlowerMotorAmps FurnaceBtuInput