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3
Installation
3.1
Installation
Remove cover (Æ Fig. 3, page 38).
Mount the module (Æ Fig. 4, page 38).
Secure the module (Æ Fig. 5, page 38).
3.2
Electrical connection
Verify the correct position of the two
CAN termination switches to ensure
that the CAN system is correctly
terminated.
If the module is an end point,
both switches must be set to ON.
If the module is connected to a
branch cable, both switches
must be set to OFF.
Connections and interfaces (Æ Fig. 6, page 39)
Key to Fig. 6, page 39:
7.5 V DC Power supply unit connection
BUS
For configuration at the factory – do
not connect
CAN 1
Earth (GND)
CAN 2
CAN Low
CAN 3
CAN High
LAN
LAN connection (RJ45)
RESET
Reset button
TSW
Switch for CAN termination
Open the grommets to match the cable
diameter and make a cut on one side
(Æ Fig. 7, page 39).
Fit the grommets and connect the cables
(Æ Fig. 8, page 39).
Connect the screen of the CAN cable in the
module to CAN 1.
Connect one wire of the twisted wire pair in
the module to CAN 2.
IVT Anywhere Gateway – 6 720 800 760 (2011/09)
Connect the second wire (of the twisted wire
pair used for CAN 2) in the module to CAN 3.
Fit the cover.
3.3
Making CAN connection to heat
pump
NOTICE: Fault caused by
interference.
CAN cable must be a screened,
twisted cable.
•
Suitable cable, 2 × 2 × 0.3 mm
twisted cable).
•
The maximum cable length is 30 m.
If the maximum cable length of the
CAN connection between all CAN
subscribers is exceeded, the system
cannot be commissioned.
Find free connections for CAN in the heat
pump.
If no free connection is available in the heat
pump, connect the CAN cable together with
another accessory.
To avoid inductive interference: Route all low
voltage cables separately from mains voltage
cables (min. clearance 100 mm).
NOTICE: Do not confuse 12 V and
CAN connection!
If 12 V is connected to the CAN, the
processors will be destroyed.
Check that the three wires are
connected to the terminals with
the corresponding markings on
the PCB.
Connect the screen (earth) of the cable to the
earth connection of the heat pump (Æ Fig 9,
page 40).
Installation
2
(screened,
5
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