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G valves Continued
A booster pump may be installed in front of the G1 valve when installing the DHW option if the head,
including pressure drop of the DHW tank coil, exceeds the head allowed by the pump curve when
calculated at 7GPM. If a booster pump is needed for a different reason, this location should also be used.
Check the DHW tank pressure drop from the Chiltrix Tank Manual or tank provider coil specs if not using a
Chiltrix tank. The G1 valve should be located as close to the CX34 as practical.
G1 Valve Wiring and Parameters
G1 and G3 valves use 220v Primary from the CX34. Use conduit and install per local code.
Figure 1, this is the direction of flow when it is activated for DHW. Figure 2, this is the direction of flow
when it is activated for Heating or Cooling. When the brown wire is connected to L1, the blue wire
connected to L2, and the black control wire is connected to G1S the valve is controlled by voltage at L2 and
G1S. Voltage at G1S activates the valve for DHW. No voltage at G1S activates the valve for Heating/Cooling.
See wiring diagram above. Note: Use the center “T” screw as a visual cue for valve position.
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