Thermo Products CDX3-75N, CHX3-75N, CHX3-125N, CDX3-125N, CHX3-100N, CDX3-100N operation manual If Not

All installations and services must be performed by qualified service personnel.

AFTER IGNITOR WARM-UP, THE 36J54 GAS VALVE IS ENERGIZED TO OPEN ON LOW FIRE SETTING

FLAME MUST BE DETECTED WITHIN 4 SECONDS IF FLAME IS DETECTED, THE DELAY-TO-FAN-ON TIME BEGINS (45 SECONDS)

IF NOT

IF FLAME IS NOT DETECTED, THE GAS VALVE IS DE-ENERGIZED, THE IGNITOR IS TURNED OFF AND THE 50V51-843 CONTROL GOES INTO "RETRY" SEQUENCE

THE RETRY SEQUENCE

PROVIDES A 60 SECOND

WAIT BEFORE IGNITION

RETRY. RETRY IS

ATTEMPTED WITH A

DIFFERENT VOLTAGE

SETTING.

		IF IGNITION ATTEMPT IS
IF SO	UNSUCCESSFUL, ONE MORE
		RETRY WILL BE MADE
		BEFORE THE 50V51-843
	GOES INTO SYSTEM LOCKOUT

IF FLAME IS DETECTED, THEN LOST,

THE 50V51-843 WILL REPEAT THE

INITIAL IGNITION SEQUENCE FOR A

TOTAL OF TEN RECYCLES. AFTER

TEN UNSUCCESSFUL RECYCLE

ATTEMPTS, THE CONTROL WILL

GO INTO SYSTEM LOCKOUT.

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