Bakers Pride Oven DRG-40 operation manual Check Safety Lockout Slow-Opening, Controls Only

VR8105, VR8205, AND VR8305 DIRECT IGNITION COMBINATION GAS CONTROLS

4.	With main burner operating, check the gas control						a. Remove the pressure regulator adjustment cap
	flow rate using the meter clocking method or check						(Fig. 6).
	pressure using a manometer connected to the					Using a screwdriver, turn the inner adjustment screw for
5.	outlet pressure tap on the gas control. See Fig. 6.					LO pressure clockwise				to increase or
	If necessary, adjust the high pressure regulator to					counterclockwise			to decrease the gas pressure
	match the appliance rating. See Tables 8 and 9 for					to the burner.
	factory-set nominal outlet pressure and adjustment					10.	Once high and low pressure have been checked
	range.						and adjusted, replace pressure regulator
	a. Remove the pressure regulator adjustment cap						adjustment cap. If the desired outlet pressure or
	(Fig. 6).						flow rate cannot be achieved by adjusting the gas
Using a screwdriver, turn the inner adjustment screw for							control, check the control inlet pressure using a
HI pressure clockwise				to increase or			manometer at the inlet pressure tap of the control.
counterclockwise			to decrease the gas pressure				If the inlet pressure is in the nominal range (see
to the burner.							Tables 8 and 9), replace the gas control.
6.	After high pressure has been checked, check low						Otherwise, take the necessary steps to provide
	pressure regulation. Two-stage appliance						proper gas pressure to the control.
	operating sequences vary. Consult the appliance
	manufacturers instructions for the specific					Check Safety Lockout (Slow-Opening
	operating sequence and regulator adjustment
	procedure for the appliance in which the control is					Controls Only)
	installed and for instructions on how to prevent the					1.	With the system power off and the thermostat set
	control from moving to high stage while checking
							to call for heat, manually shut off the gas supply.
	the low pressure regulator setting.					2.
7.							Energize ignition control and start timing safety
	Check the low rate manifold pressure listed on the
							lockout time. When spark ignition terminates, stop
	appliance nameplate. Gas control low rate outlet
							timing.
	pressure should match this rating.
8.							When using the VR8105H, VR8205H and
	With main burner operating, check the gas control
							VR8305H step-opening control, the specified
	flow rate as before (using the meter clocking
							ignition control safety lockout time must exceed 8.5
	method or check pressure using a manometer
							seconds for the system to function properly.
	connected to the outlet pressure tap on the					3.
							After spark cutoff, manually reopen the gas control
	control).
9.							knob. No gas should flow to the main burner.
	If necessary, adjust the low pressure regulator to					4.
							Reset the system by adjusting the thermostat
	match the appliance rating. See Tables 8 and 9 for
							below room temperature, wait 30 seconds, and
	factory-set nominal outlet pressure and adjustment
							then move the thermostat setting up to call for
	range.
							heat. Normal ignition should occur.
			Table 8. Pressure Regulator Specification Pressures (in. wc).
					Factory Set Nominal Outlet
		Type of		Nominal Inlet		Pressure				Setting Range
Model Type		Gas		Pressure Range	Step		Full Rate	Step			Full Rate
Standard,		NAT		5.0-7.0	—		3.5	—			3.0-5.0
Slow
		LP		12.0-14.0	—		10.0	—			8.0-12.0
Step		NAT		5.0-7.0	0.9		3.5	None			0.7-1.7
		LP		12.0-14.0	2.2		10.0	None			1.4-5.5
Two-stage		NAT		5.0-7.0	—		1.7 Low	—			0.9-3.0 Lowa
							3.5 High				3.0-5.0 High
		LP		12.0-14.0	—		4.9 Low	—			3.5-5.5 Low
							10.0 High				8.0-11.0 High

aLow Fire setting range for VR8305Q 1/2 in. by 1/2 in. and 1/2 in. by 3/4 in. is 1.5 to 3.0 in. wc.

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