Grundfos Geo-Flo Universal Pump Controller - Page 9

  


230
VAC
230
VAC
Orange* Yellow* Red*
R
SPST Relay #1 SPST Relay #2
Pump
Power
Block
C
Field
Supplied
Relay(s)**
(230V coil)
HPC IN1
From heat pump
circuit board
or transformer
Field Wiring (low voltage)
Field Wiring (high voltage)
R HP IN2
Not all brands have the same wire colors for the pump power block.
Orange = 230 VAC (common)
Yellow = 230VAC (switched) for 1st stage
Red = 230VAC (switched) for 2nd stage
Relay #1 needed for temperature dierence mode; both relays needed for ow mode.
*
**





-






INSTALLATION TIP