Mr. Heater HST45 Operations Instructions download pdf (Page 21)

Operating Instructions and Owner’s Manual | Gas-Fired Low-Intensity Infrared Heater

BURNER DOES NOT LIGHT

Possible Cause

Air

in the gas line.

Imp

roper gas inlet pressure.

Gas

valve does not open.

Low gas outlet pressure.

BURNER DOES NOT STAY LIT

Possible Cause

Damaged wires between DSI module and electrode.

Faulty DSI module

Damaged

Electrode

Try This….

rge gas lines.

Check

gas inlet pressure at the 1/8” NPT plugged tap. Gas inlet

pressure should be as follows:

Natural Gas: 5.0”w.c. min.; 10.5” max.

Gas: 11”w.c. min.; 13.0” max.

gas inlet pressure does not meet inlet pressure requirements

ntact the gas company.

Check

for 24V across valve terminals.

Check

Shutoff On Valve.

NO: Check wiring between the ignition module and the valve.

Repair/replace wires as required. If wiring is OK, replace ignition

dule. IF YES: Replace gas valve.

Check

gas manifold pressure. Measure manifold pressure at the

pressure tap on the gas valve.

Check

gas manifold pressure. Measure manifold pressure at the

pressure tap on the gas valve. Natural Gas: 4.0” w.c. LP Gas: 10.0”

w.c. If manifold pressure does not meet requirements, adjust valve

outl

et pressure with the adjustment screw on the valve. NOTE:

Proper inlet gas pressure must be verified before performing outlet

pressure testing.

Try this…..

Replace wires as required.

Replace DSI module.

Replace Electrode

Enerco Group, Inc.,

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Mr. Heater HST45 Operations Instructions Page 21

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