Installation Manual

41
HE Series Infrared Gas Heater Installation and Operation Manual

WARNING
Improper adjustment, alteration, service or maintenance can
cause property damage, injury or death. This heater must be
installed and serviced only by a trained gas service technician.
SET THERMOSTAT TO CALL FOR HEAT
APPLY 120 VOLTS - 

• CHECK 120V TO DSI AT “L1”
• CHECK 120V OUT AT “IND” FROM DSI TO BLOWER
COMBUSTION AIR BLOWER
STARTS
AIR PROVING SWITCH HAS
CLOSED 24 VOLTS IS PRESENT
AT “PSW” AT DSI CONTROL.
• CHECK TUBING TO SWITCH IS CONNECTED
AND NOT BLOCKED OR KINKED
• CHECK AIR PRESSURE WITH MANOMETER
• CHECK FOR OBSTRUCTION IN THE AIR INTAKE
• REPLACE DEFECTIVE BLOWER
• CHECK INTEGRITY OF SWITCH
• REPLACE DEFECTIVE SWITCH
• CHECK DSI CONTROL FUSE FOR CONTINUITY
• VISIBLY CHECK IF IGNITER IS SHORTING OUT
• CHECK GROUND WIRING
• REMOVE AND INSPECT IGNITER AND LEAD
• CHECK BOOT OF THE IGNITION CABLE FOR
SIGNS OF MELTING OR OVERHEATING
• IF “YES” ... TAKE PROTECTIVE ACTION TO
SHIELD CABLE AND BOOT FROM EXCESSIVE
TEMPERATURE; REPLACE ANY DEFECTIVE
COMPONENT
• CHECK CERAMIC INSULATOR AND CAP
• CHECK SPARK GAP SETTING IS 3/16” (ADJUST
BY MOVING THE GROUND PRONG ONLY)
• PERFORM IGNITION LEAD TEST (See SPARK
IGNITION CIRCUIT INSTRUCTIONS—Section 22)
• GOOD SPARK.....REPLACE IGNITER
• NO SPARK/OR WEAK.....REPLACE CONTROL
SPARK IGNITER / SENSOR
24V TO GAS VALVE - RED LIGHT
IS ON
CONTINUED

NO
YES
YES
YES
NO
NO
• REMEDY 120 VOLTS SUPPLY FAULT
NO
NO
• FAULTY RELAY SWITCH IN DSI — RE-
PLACE DSI
BLOCKED FLUE SWITCH IS
CLOSED
24 VOLTS IS PRESENT AT “TH” AT
DSI CONTROL.

YES
NO
• CHECK TUBING TO SWITCH IS CONNECTED
AND NOT BLOCKED OR KINKED
• CHECK AIR PRESSURE WITH MANOMETER
• CHECK INTEGRITY OF SWITCH
• REPLACE DEFECTIVE SWITCH
• CHECK FOR AND REMEDY ANY OBSTRUCTION
IN THE VENT / TUBE