Grundfos Geo-Flo Universal Pump Controller User Manual

  
Wiring the Controller (Single Heat Pump -- Magna Geo Pump)


-





1. 
2. 
3. 

NOTES:
A. 
IMPORTANT:


-


24 VAC Input to Power
Controller
(
Note 3
)
24VAC Input Signal
(Note 2)
24VAC Input Signal
(Note 1) Magna GEO Pump
Input
/Output
Grundfos Direct Sensor Inputs
1-10 VDC Input
(not use
d)
Earth Ground
Thermistor Inputs
Y2
Brown
Black
Blue
Entering
Water Therm (from loop)
Leaving
Water Therm (to loop)
Thermistors Common
4-pin connector from
Grundfos Flow Sensor
on either Entering OR Leaving Water side
R
C
LWT
EWT
OUT IN REF
PWM
HP IN1 HP IN2
LWT EWT C
THERMS
+ -
1-10 DCIN
24VAC IN GND
AUXILIARY
L1 L2 N1 N2
OUT OUT ININ
BRN BLK BLU
ACC
(Note A)
C
208-230 VAC Input/Output
Power to UPS26-99 (2nd pump)
for two pump flow centers. Do
not connect Magna GEO single
pump flow center to this
terminal block.
Line Voltage Wiring
(115V or 230V)
UPS26-99 (2nd pump)
Do not connect to
Magna GEO pump.
115V
or 230V
pump
(Note B)
(Note C)



IMPORTANT:
Controller must
be grounded.

Grundfos Geo-Flo Universal Pump Controller Specifications

General

Brand	Grundfos
Model	Geo-Flo Universal Pump Controller
Category	Controller
Language	English