Table of Contents
Advertisement
3.2
Installation
The installation surface on the wall must be flat.
▶ Install the base on a wall. ( Fig. 6).
18-2 AWG (2x 1mm²)
1/4"
1/4"
(6.35 mm)
(6.35 mm)
Fig. 6
Mounting the base
3.3
Power connection
Power is supplied to the user interface via EMS BUS.
Connections are not polarity specific.
If the maximum total length of the BUS
connections between all BUS users is
exceeded or the BUS system has a ring
structure, commissioning of the system is not
possible.
CRC200
9/64"
(3.5 mm)
6 720 811 156-05.1O
Maximum total length of the BUS connections with AWG18
2
(0.75 mm
): 492 ft. (150 m)
▶ If several BUS users are installed, maintain a minimum
clearance of 4" (100 mm) between the individual BUS
users.
▶ If several BUS users are installed, connect the BUS users in
series or in a star pattern.
▶ To avoid inductive interference: Make sure all low-voltage
cables are routed separately from line voltage cables (min.
clearance 4" / 100 mm).
▶ In the case of outside inductive effects, use shielded cable
and ground one end of the shield. Do not connect the shield
to the connecting terminal for the ground conductor in the
module; use the building ground instead, e.g. unused
grounded terminal or water pipe.
▶ Establish a BUS connection to the heat source.
CRC200
B
U
S
Fig. 7
Connection of the user interface to a heat source
1)
Terminal identification:
On heat sources with an EMS BUS system terminals
are: BUS or BB
The outdoor temperature sensor (accessory) needs to be
connected to the heat source.
▶ Observe the instructions for the heat source when
connecting the electrical supply.
When sensor leads are extended, apply the following lead
cross-sections:
•
Up to 66 ft. (20 m) with AWG18 (0.75 mm
•
66 ft. (20 m) to 330 ft. (100 m) with AWG16 (1.50 mm
Installation | 9
1)
BUS/
BB
6 720 811 156-06.1O
2
)
2
).
6 720 821 651 (2017/05)
Hide quick links:
Advertisement
Table of Contents
