Hydraulic connection set
For hydraulic connection of the outdoor unit to the indoor unit, flexi-
ble routing underground:
■ 4 adaptors
■ 2 rubber end collars
A
■ 1 roll of route warning tape
A
A
a
c
B
d
B
C
b
A
End collar
B
Flow/return line made of polybutene
C
Outer pipe, thermally insulated
Flow/return lines
B
2 x DN 32
– Dim. a: External
7
40 mm
– Dim. b: Wall thickness
3.7 mm
– Adaptors
4 x DA 40 to R 1¼
Outer pipe
C
– Dim. c: External
7
160 mm
Number of end collars
A
2
Dim. d: Line length
– 5 m
Part no.
7521273
– 10 m
Part no.
7521274
– 15 m
Part no.
7521275
– 20 m
Part no.
7521276
■ The flow and return lines are made of polybutene to EN ISO 15876
with a pressure rating of 8 bar at 95 °C. To differentiate between
the two pipes, one is marked with a stripe.
■ The thermal insulation is made from longitudinally watertight polyo-
lefin foam, which is connected to the polyethylene (HDPE) outer
pipe.
■ The pipe is fixed directly in the brickwork with expanding mortar or
concrete (no other accessories required).
■ The flow and return lines can be trimmed.
Floorstanding installation connection set
Part no. ZK02938
Connection set for connecting the outdoor unit to the hydraulic con-
nection sets
Components:
■ 2 stainless steel DN 32 corrugated pipes, 600 mm long, with 1¼
brass locking nut and thermal insulation, 42 x 32 mm
■ Thermal insulation, 54 x 31 mm, 200 mm long
■ Brass twin connector 1½ male/1¼ male
■ Brass reducer 1½ male to 1¼ female
■ Adhesive tape: Length 1000 mm, width 50 mm
Wall mounting connection set
Part no. ZK02939
For hydraulic connection of the outdoor unit to the heating system
Components:
■ Wall duct DN 150, 750 mm long
■ Sealing insert with entries for 2 x copper pipes
7
28 mm and
3 x electric cables 1 mm to 18 mm (copper pipe not included)
■ Cap with entries for 2 x copper pipes
7
28 mm and 3 x electric
cables of varying diameters
■ Thermal insulation 28 x 24 mm, 200 mm long for the copper pipes
in the wall duct
■ Thermal insulation, 54 x 31 mm, 200 mm long
■ Adhesive tape: Length 1000 mm, width 50 mm
6.5 Vitocal 222-A: Hydraulic connection accessories
3-way diverter valve
Part no. ZK02928
For installation in the return in cascade applications
Installation accessories
(cont.)
VITOCAL
VIESMANN
61
5831388
6
