VR8215S,T DIRECT IGNITION COMBINATION GAS CONTROLS
7
69-2253—01
MAINTENANCE
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury,
or death.
Do not disassembly the gas control; it contains
no replaceable components. Attempted
disassembly, repair, or cleaning can damage
the control, resulting in gas leakage.
Regular preventive maintenance is important in
applications in the commercial cooking and agricultural
and industrial industries that place a heavy load on
system controls because:
• In many such applications, particularly commercial
cooking, the equipment operates 100,000 to 200,000
cycles per year. Such heavy cycling can wear out the
gas control in one to two years.
• Exposure to water, dirt, chemicals and heat can
damage the gas control and shut down the control
system.
The maintenance program should include regular
checkout of the control as outlined in the Startup and
Checkout section, and the control system as described in
the appliance manufacturer literature.
Maintenance frequency must be determined individually
for each application. Some considerations are:
• Cycling frequency. Appliances that may cycle 20,000
times annually should be checked monthly.
• Intermittent use. Appliances that are used seasonally
should be checked before shutdown and again before
the next use.
• Consequence of unexpected shutdown. Where the
cost of an unexpected shutdown would be high, the
system should be checked more often.
• Dusty, wet, or corrosive environments. Since these
environments can cause the gas control to deteriorate
more rapidly, the system should be checked more
often.
The system should be replaced if:
• It does not perform properly on checkout or
troubleshooting.
• The gas control is likely to have operated for more than
200,000 cycles.
• The control is wet or looks as if it has been wet.
SERVICE
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury
or death.
Do not disassemble the gas control; it contains no
replaceable components. Attempted disassembly,
repair, or cleaning can damage
the control, resulting in gas leakage.
CAUTION
Equipment Damage Hazard.
Can burn out thermostats or other
components in the control string.
Never apply a jumper across (or short) the valve
coil terminals, even temporarily.
After servicing, verify proper system operation.
If Main Burner Does Not
Come On With Call For Heat
1.
Confirm the gas control switch is in the ON position.
2.
Adjust thermostat several degrees above room tem-
perature.
3.
Using ac voltmeter, measure across the quick con-
nect terminals at gas control.
4.
If voltage is incorrect or not present, check control
circuit for proper operation.
5.
If proper voltage is present, replace gas control.
INSTRUCTIONS TO
THE HOMEOWNER
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury,
or death.
Follow these warnings exactly:
1. Before lighting, smell around the appliance for
gas. Be sure to smell next to the floor because
LP gas is heavier than air. If you smell gas:
a. Turn off the gas supply at the appliance
service valve. On LP gas systems, turn off
the gas supply at the gas tank.
b. Do not light any appliances in the house.
c. Do not touch electrical switches or use the
phone.
d. Leave the building and use a neighbor’s
phone to call your gas supplier.
e. If you cannot reach your gas supplier, call
the fire department.
2. Replace the gas control in the event of any
physical damage, tampering, bent terminals,
missing or broken parts, stripped threads, or
evidence of exposure to heat.
IMPORTANT
Follow the operating instructions provided by the
heating appliance manufacturer. The information
below describes a typical control application, but
the specific controls used and the procedures
outlined in your appliance manufacturer
instructions can differ, requiring special
instructions.