I
NSTALLATION
C
OMFORT
A
IR
C
URTAIN
en-14
en
2. Screw a lock nut
1
onto each threaded rod.
3. Attach the unit to the threaded rods.
4. Secure the unit by tightening the lock nuts
1
.
2.4
Connecting the unit to the central heating system
Only for water-heated models (type W)
See also:
6.1.2 "Opening the unit" on page 39
2.4.1 Special points
Caution:
c
The central heating system’s supply and return pipes
must be attached to the correct corresponding
connectors
1
. On the unit, the directions are
indicated with arrows.
• Keep the connectors
1
in place by using pliers when con-
necting the pipes.
• Insert a valve and a venting valve on both pipes close to
the unit.
Application limitations for units with water heating
Heating medium
water with max. 20%
glycol
Maximum
water flow-
path
W2
90/70 °C
W4
70/50 °C
Max. dis-
charge temper-
ature
types S/M
55 °C
type L
45 °C
Maximum operating pressure
8 bar
