Enerco ERXL-175 사용자 설명서

Operating Instructions and Owner’s Manual

Enerco | enerRadiant® XL Series Heater

1.   Turn the thermostat up. When the thermostat calls for 

heat, blower motor will energize.

2.   When the motor approaches nominal running RPM, 

the air proving switch closes and activates the ignition 
module.

3.   The ignition module then energizes the hot surface 

igniter for a timed warm-up period (approximately 45 
to 60 seconds.)

4.   After the warm-up period, the gas valve is energized.

5.   During the last part of the sequence, the igniter is de-

energized and is converted to a flame sensing rod.

6.   If a flame is detected, the gas valve remains open. 

When the call for heat is satisfied, and the system 
control mechanism de-energizes the burner line 
voltage supply, the gas valves are turned off.

7.   If no flame is detected on a single-try module, the gas 

valve is closed, and the module will lockout until it is 
reset. Reset is accomplished by removing power from 
the module for at least five (5) seconds (thermostat 
cycle required.)

8.   If no flame is detected on a three-trial module, the 

gas valve is closed, and a purge period begins. After 
the purge, the module acts to power the igniter for a 
second warm-up period, and a second trial for ignition 
period. If flame is still not established, a third and 
final purge, warm-up, and trial cycle begins. After 
three trials, the module will lockout until reset. Reset is 
accomplished by removing power from the module for 
at least five (5) seconds (thermostat cycle required.)

9.   On a three-trial module, if flame is established and 

lost on the first or second trial, the gas valve is turned 
off, a purge, warm-up, and trial for ignition will occur 
on a three-trial module, only three trials for ignition 
are allowed per thermostat cycle.

For best performance, the following maintenance procedures should 
be performed before each heating season:

1.   Be sure gas and electrical supply to heater are off 

before performing any service or maintenance.

2.   Check condition of blower scroll and motor. Dirt and 

dust may be blown out with compressed air, or a 
vacuum cleaner may be used.

3.   Check condition of burner. Carefully remove any dust 

or debris from inside the burner box or burner cup.

4.   Inspect the igniter. Replace igniter if there is excessive 

carbon residue, erosion, breakage or other defects.

5.   Check the inside of the firing tube with a flashlight. If 

carbon or scale are present, scrape out the deposits 
with a wire brush or rod, or metal plate attached to a 
wooden pole.

6.   Check to see that the burner observation window is 

clean and free of cracks or holes. Clean or replace as 
necessary.

7.   Check the flue pipe for soot or dirt. After cleaning as 

necessary, re-attach the flue pipe to the heater.

8.   Outside surfaces of heater may be cleaned by wiping 

with a damp cloth.

9.   A qualified service agency should be contacted for 

service other than routine maintenance.

10.   Check vent terminal and fresh air inlet to see that they 

have not been blocked during the non-heating season. 
If either pipe is restricted, the air switch won’t close, 
resulting in a no-heat situation.

 

  CAUTION: Before opening the Ener-Radiant XL 

burner door for any type of service, be sure 
the gas supply has been shut off at the heater 
and the electrical cord from the burner box has 
been unplugged.

 

Blower Motor  1. Is the thermostat calling for heat? Is there

 

Fails to Run:  115V at the burner receptacle?

 

  2. Check blower side door for seal. Check door 

switch. Replace if necessary/

 

  3. Check blower for obstructions. Replace 

blower if necessary.

 

Igniter  1. Check igniter for damage. Replace if 

 

Does Not Glow:  necessary.

 

  2. Check voltage and resistance at igniter. 

(Voltage should be 115V. Resistance should be 
40-75 ohms.)

 

  3. Check for obstructions to the air inlet and 

outlet.

 

  4. Check wiring and hose connections to the 

air switch. Replace if necessary.

 

  5. Check voltages at transformer primary and 

secondary. Replace transformer or module if 
necessary.

 

Valve Does Not  Gas pressure downstream of gas control can

 

Come On:  be measure by using a manometer and 

connecting to pressure tap on control/

 

  1. Check to see if manual valve heater is ON.

 

  2. Check to see if manual valve knob on heater 

gas control in ON.

 

  3. Supply gas pressure can be checked at 

1/8” NPT pressure tapping on heater external 
manual valve.

 

  4. Check to see if gas control is opening: no 

manifold pressure indicates valve is closed.

 

  If the valve is closed, either the gas valve or the 

ignition module is faulty. 

 

  WARNING: Do not disconnect ground leads 

inside heater. Do not interchange grounded 
and ungrounded leads on transformer or 
ignition module.

  Burner Does Not  1. Check to see if gas lines were properly 
 

Light:  purged of air.

 

  2. Check inlet and outlet gas pressure during 

ignition period.

 

  Natural inlet pressure should be 4.6”