Raypak RAYTHERM 0133-4001 - Manual (Page 28)

FOR MODELS WITH AUTOMATIC GAS VALVES
LIGHTING INSTRUCTIONS
1. Close all gas valves. Turn off electrical power
supply. Wait five (5) minutes.
2. Open manual pilot valve. Turn on electrical
power. Pilot is automatically lighted.
PILOT
VALVE CONTROL
SHOWN IN THE
MAIN GAS SHUT-OFF
"ON" POSITION VALVE SHOWN IN
THE "ON"
POSITION
GAS INLET
Fig. # 8220.0
IGNITION MODULE
Fig. # 8929.1
3. Open main gas valve.
4. Set temperature controls to desired temperature.
TO SHUT DOWN
Close all manual gas valves. Turn off electrical
power.
28
PILOT WITH
BURNER FLAME
AFTER START-UP
STANDING PILOT CHECKOUT PROCEDURE
1. Turn on pilot gas supply, light pilot, and check
pilot tubing connections for leakage. With main
burner in operation, paint tubing connections
with a rich soap and water solution. Bubbles
indicate a gas leak.
2. Adjust pilot to obtain a normal flame enveloping
3/8 to 1/2 inch [9.5 to 12.5 mm] of the
thermcouple or generator tip.
3. Place system in operation, and:
a. Check for satisfactory ignition of main
burner.
b. Make certain the pilotstat "holds in", and
that shutdown occurs within 2-1/2 minutes
after the pilot flame is extinguished.
c. Observe operation for at least three cycles
to be sure the system is functioning nor-
mally.
INTERMITTENT PILOT SYSTEM CHECKOUT
(S8600)
1. Turn on power to the ignition systems and turn
gas supply off.
2. Check ignition module as follows:
a. Set the thermostat or controller above
room temperature to call for heat.
b. Watch for continuous spark at the pilot
burner.
c. Time the spark operation. Time must be
within the lockout timing period (15 or 90
seconds).
d. Turn thermostat down to end call for heat
and wait 60 seconds on lockout models
before beginning step 3.
3. Turn on gas supply.
4. Set thermostat or controller above room temp-
erature to call for heat.
5. Systems should start as follows:
a. Spark will turn on and pilot gas valve will
open at once. Pilot burner should ignite
after gas reaches the pilot burner.
b. Spark ignition should cut-off when pilot
flame is established.
c. Main gas valve should open and main
burner should ignite after gas reaches the
burner port.
PILOT FLAME SHOULD ENGULF THERMOCOUPLE
Fig. # 8186.1
STANDING PILOT