Roberts Gorden CTU 22 TO 115 Automatic Burner Control Box Sequence, Gas Valve for Heater Models

SECTION 11: COMMISSIONING

Figure 10: Automatic Burner Control Box Sequence

Supply 230 V
Flue Fan
Pressure Switch P	NO
C	NC

Ignition Spark

Start Gas Valve

Flame Signal

Burner sequence for Honeywell S4563 or S4565C			CLOSE
	START	RUN	DOWN

30 Sec. Purge*

ts**

Required Incoming Signals Signals Output By Control

*Purge time begins at pressure switch change over.

**ts=Safety time (S4563C=3 seconds [alternate 5 seconds]; S4565C=5 seconds)

If at any stage the flame fails, the control will go to "lockout". The red light will illuminate and the control will need to be manually reset before any further start attempt can be made.

Figure 11: Gas Valve for Heater (Models 22 - 60)

End View
		Fixing Screw
Ignition		Ignition Control
Output		(Plugs into Gas Valve)
Flame
Probe	Regulator
Connection
	(Under Cover)	12 Cable Connector
	Outlet Pressure
	Inlet Pressure
		Gas Inlet
		25