Raypak P-R185B To P-R405B, C-R185B To P-R405B, P-R185BL To P-R405BL, C-R185BL To C-R405BL, RP2100

NOTE: Do not use Teflon tape on gas line pipe thread. A flexible sealant is recommended.

A minimum of 7" W.C. and a maximum of 14" W.C. upstream pressure under load, and no load conditions must be provided for natural gas or a minimum of 12" W.C. and a maximum of 14" for propane gas.

GAS PRESSURE REGULATOR

The gas pressure regulator is preset at 4" W. C. for natural gas, and 11" W. C. for propane gas. The pressure at the gas valve, taken with a manometer, should be about 3.7" W. C. natural gas (3.9" W.C. for Low NOx) and 10.5" W. C. propane gas. If an adjustment is needed, remove seal

and turn adjustment screw clockwise to increase

pressure or counter-clockwise to decrease pres- sure.

ELECTRONIC IGNITION GAS VALVES-CONTINUED

Fig # 9328	Fig # 9329
	Gas
	Pressure
	Adjustment
Robertshaw 7200	Robertshaw 7000 BDER
Model 185	Model 265-335

Gas

Fig # 9327Pressure

Adjustment

Robertshaw 7000 DERHC

Model 405

PIPE SIZING FOR GAS CONNECTIONS

Fig. # 8149Fig. # 9365

ATMOSPHERIC LOW NOx

GAS PRESSURE ADJUSTMENT LOCATIONS

MILLIVOLT GAS VALVES

Gas

Low NOx units are not available in propane.

Pressure

Adjustment

Fig # 9263

Robertshaw 7000

Models 185 thru 405

ELECTRONIC IGNITION GAS VALVES

Gas

Pressure

Adjustment

Honeywell VR8304

Models 185 thru 405

Fig # 9264

18