Troubleshooting; Corrective Action; Pressure Switch - EmberGlow VFF15NLA Manual De Instalación Y Funcionamiento Del Propietario

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WARNING: If you smell gas:
• Shut off gas supply.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your
building.
• Immediately call your gas supplier from a neighbor's phone. Fol-
low the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire department.
WARNING: Only a qualified service technician should service and
repair heater. Make sure that power is turned off before proceeding.
Turn off and let cool before servicing.
IMPORTANT: Operating heater where impurities in air exist may create odors. Cleaning sup-
plies, paint, paint remover, cigarette smoke, cements and glues, new carpet or textiles, etc.,
create fumes. These fumes may mix with combustion air and create odors.
Note: All troubleshooting items are listed in order of operation.
Problem
Using natural gas and
pilot will not light.

Pressure Switch

When using natural gas (NG), there is a
pressure switch that acts to turn off the gas
flow to the pilot if the inlet pressure exceeds
9.5" WC. This is to prevent the operation of
the unit on the wrong gas (propane). If your
natural gas supply exceeds 9.5" WC the unit
will not operate. Either contact your gas sup-
plier to check and adjust the inlet pressure or
a qualified service technician can bypass the
pressure switch.
Before attempting to bypass the pressure
switch, make sure the type of gas being used
is correct. Check to make sure the connection
fitting is in the correct inlet on the regulator.
Refer to Connecting to Gas Supply, page 14
Only a qualified installer should bypass the
pressure switch. To bypass the pressure
switch locate the set screw on the regulator.
Use a small flat bladed screw driver to turn the
set screw counterclockwise 2 turns. This will
bypass the pressure switch function.
24

TROUBLESHOOTING

Possible Cause
I n l e t p r e s s u r e e x c e e d s
9.5" WC.
www.sureheat.com

Corrective Action

Bypass pressure switch. See
instructions below.
The entire gas delivery piping including con-
nections inside the heater should be leak
tested by the qualified installer. After leak
testing the qualified installer should light the
appliance. Refer to the correct flame pattern
as illustrated on page 21 All flame patterns
should be safely inside the product. If for any
reason they are not, stop use of the appliance
and call for repairs.
Pressure Switch Set Screw
Figure 30 - Gas Regulator Pressure
Switch
200176-01B

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