Gs-_03_ (On/Off With Pressure Regulator); Gs-405_ (On/Off With Servo Precision Regulator) - Johnson Controls GS Series Manual

Single-block multi-function gas control valves
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This valve provides adjustable step/slow opening for smooth ignition in a
GS-_ _2_
burner application. The valve is factory set to maximum start gas position
(On/Off Step-
and maximum flow position. Adjust the hydraulic damper at the top of the
slow Opening
solenoid coil to set the desired flow rate through the valve as well as the
with Flow
desired start gas flow rate.
Adjustment)
To adjust the maximum flow rate, loosen the unsealed mounting screw on
the aluminum hydraulic damper housing. Hand turn the housing clockwise
until the desired setting is obtained. Tighten the mounting screw to secure
the adjustment knob at the desired flow rate.
To adjust the start gas position, remove the plastic cap from the hydraulic
damper housing and turn the brass screw clockwise until the desired
setting is obtained (see Figure 6). Replace the plastic cap.
This valve provides spring regulation to maintain the gas pressure at the
GS-_03_
valve outlet. For outlet pressure adjustment, loosen the unsealed mounting
(On/Off with
screw on the plastic regulator knob at the top of the solenoid coil. Hand
Pressure
turn the regulator knob clockwise to increase or counterclockwise to
Regulator)
decrease the outlet pressure of the valve (see Figure 7). Tighten the
mounting screw to secure the adjustment knob at the desired outlet
pressure.
This valve provides servo regulation for precision control of the valve
GS-405_
outlet pressure. Before setting the valve for the desired outlet pressure,
(On/Off with
adjust the start gas pressure.
Servo Precision
Regulator)
10 G—UL Listed GS-20/25 and GS-40/45 Series Single-block Multi-function Gas Control Valves Technical Bulletin
All manuals and user guides at all-guides.com
Figure 6: Hydraulic Damper Housing
Figure 7: Spring Pressure Regulator Adjustment Knob
M

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This manual is also suitable for:

Gs-20 seriesGs-25 seriesGs-40 seriesGs-45 series

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