Raypak RAYTHERM 0133-4001 - Manual (Page 30)

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The boilers are certified and tested under the latest
edition of the ANSI Z21.13 standards for hot water
boilers.
The boiler should be installed to meet the latest edition
of all local codes, the National Fuel Gas Code Z223.1
and the National Electrical Code, ANSI/NFPA 70.
OPERATION
On call for heat, the ignition system, consisting of an
electronic spark module, and gas pilot system is ener-
gized. Providing pilot is proven, blower will start
running, the main gas valve will open and the boiler will
operate. When the operating control is satisfied the
boiler will shut down.
START-UP (S8610B)
1.Turn on power to the boiler with gas supply off.
2.Check ignition module as follows:
a. Set the thermostat or controller to call for heat.
b. Watch for continuous spark at the pilot burner.
c. Check the ignition spark operation. Time must be
within the lockout timing period (15 or 90 seconds).
d. Turn control down to end call for heat and wait 60
seconds on lockout models before beginning step
3.
3.Turn on gas supply.
4.Set controller to call for heat.
5.System should start as follows:
a. Spark will turn on and pilot gas valve will open and
the blower will begin running.
b. Heater will operate until call for heat is satisfied.
LOW NOx BOILERS Models 181 to 401
Fig # 9361
FLAME ROLL-OUT SAFETY SWITCH
The boiler is equipped with a cut-off device to prevent
flame roll-out in the event the heat exchanger becomes
blocked. This is a "manual reset" type roll-out switch,
that must be reset by a service technician after any over
temperature conditions have been fixed. Excessive
restriction in the heat exchanger flue passage may
cause the switch to disable the boiler.
BURNER ADJUSTMENT
This burner assembly does not require any primary air
adjustments.
VISUAL INSPECTION
Flame can be observed through the slot opening above
the plenum. Flame color is blue and evenly spread on
the top surface of the burner. At least every three
months a visual inspection should be made of the
burners. In case flame lifting is observed, check gas
pressure on manifold and static pressure in plenum.
Gas pressure in manifold should be 3.9" W.C. and
static pressure in plenum should be greater than 0.5"
W.C.
ELECTRICAL
Be sure that electrical service to the boiler has proper
overload fuse or circuit breaker protection and wire
size, and connections which comply with all applicable
codes.
Fig. # 9412