CTC Union GSi 600 Series, Installation And Maintenance Manual

Page: 46 / 136

46 CTC GSi 600
8.1 Sensor connection
Sensor connection is carried out on top of the main product.
Sensor terminal block
i
Do not attach
the sensor cable
permanently until you
have tested where
the best location is.
Connection of outdoor sensor (B15)
The outdoor sensor is connected to G11–G12 on the sensor terminal block.
The sensor should be set up on the house’s northwest or north side, so that
it is not exposed to morning and evening sun. If there is a risk of the sensor
being affected by the sun’s rays, it must be protected by a screen.
Place the sensor at around 2/3 of the height of the facade near a corner, but
not under a roof projection or other form of wind protection. Do not place it
either above ventilation ducts, doors or windows where the sensor may be
affected by factors other than the actual outdoor temperature.
Connection of room sensors (B11 and B12)
Connect room sensor 1 to G17–G19.
Connect room sensor 2 to G20–G22.
The room sensor is fi tted at a central point in the house, in the most open
position possible, ideally in a hall between several rooms. This is the best
position for the sensor to record an average temperature for the house.
Feed a three-conductor cable (minimum 0.5 mm²) between the heat pump
and room sensor. Then attach the room sensor securely in a position roughly
two thirds of the way up the wall. Connect the cable to the room sensor and
heat pump.
When connecting a wireless room sensor (accessory), refer to the
accessory's manual.
Check room sensor connection
• Open the "Installer/Service/Function Test/Heating Circuit" menu.
• On the row "LED room sensor", press "OK".
• Select "On" using the "+" button and press "OK".
Check that the room sensor LED lights up. If not, check the cables and
connection.
• Select "Off" using the "-" button and press "OK". If the OK LED goes
off, the check is complete.
• Return to start menu by pressing the "Home" button.
Room sensor 1 (B11)
Sensor terminal
block Terminal
block, room
sensor
G17 #1 (alarm)
G18 #2
G19 #4
Room sensor 2 (B12)
Sensor terminal
block Terminal
block, room
sensor
G20 #1 (alarm)
G21 #2
G22 #4
Accessory: expansion card (A3)
For certain system options the product must be supplemented with the
expansion card accessory (A3). See the manual provided for how to install
the card. Settings which are entered after installation are found in this
manual.