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Control Systems Inc.
WIRInG anD InsTallaTIon
WIRInG
Terminal 1 and 2:
Thermostat Input
Run wire straight from thermostat.
Terminal 3 and 5:
Outdoor Sensor
Place outside on the North side of the building
(if possible).
Terminal 4 and 5:
Boiler/ Chiller Sensor
This sensor is put on the main boiler/chiller loop.
Terminal 6 and 7:
Boiler/ Chiller Contacts
This contact is used to send the demand signal for the
boiler/ chiller to turn on.
Do not apply power here as the thermostat input
functions on closed contacts.
sYsTeM sensoR aTTaCHMenT (oPTIonal seTUP)
When using the Hydrobloc in an injection setup you must cut the wire from the existing system/pressure
sensor and use the extension wire to attach that line to a strap on system sensor (sold seperately). There is
also an Interconnect Wire that needs to be connected (included)
Supplied Extra Strap-on Sensor
Interconnect Wire (Red Heatshrink)
You must splice a strap-on sensor to the green (ground) and the yellow (signal) wire. Then you must place
the wire between the newly connected yellow wire and the brown wire. This will then allow you to mount
the sensor on the main system loop to use the Hydrobloc in a primary/secondary application. (No pressure
indicated on display)
Outdoor
Outdoor
Sensor
Sensor
Yellow
Brown
Green
White
H B X H Y D 0 1 0 0 H y d r o B l o c
1
Thermostat
Thermostat
2
3
4
Boiler/
Boiler/
Chiller
Chiller
5
Sensor
Sensor
6
Boiler/
Boiler/
7
Chiller
Chiller
Contacts
Contacts
H y d r o B l o c M a n u a l P a g e 5
V e r s i o n 2 . 1 0
Set
B
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