Wall mounting
C D
300
G
F
B
200
A
E
200
220
180
A
Gravel bed as condensate soakaway
B
Anti-vibration mounts (standard delivery of bracket)
C
Hydraulic connection lines, indoor/outdoor unit
D
Indoor/outdoor unit Modbus cable and outdoor unit power cable:
Route the cables so they are not stressed.
E
Connection set, wall mounting (accessories)
F
Openings in the base plate for free drainage of condensate:
Never seal the openings.
G
Bracket for wall mounting (accessories)
Note
Provide thermal insulation of sufficient thickness on the pipework to
the outdoor air: See table on page 99.
7.3 Siting the indoor unit
Installation room requirements
■ Dry and protected against frost
– Max. 70 % relative humidity, corresponding to an absolute
humidity of approx. 25 g water vapour/kg dry air.
– Ambient temperatures
Wall mounted indoor unit: 5 to 35 °C
Indoor unit with integral DHW cylinder: 0 to 35 °C
■ Avoid dust, gases and vapours due to a risk of explosion in the
installation room.
Installation requirements
■ Provide a drain connection for the safety valve.
Connect the safety valve drain hose to the public sewage system
with a fall and a pipe vent.
■ Provide shut-off equipment for the heating water flow and common
heating water return/DHW cylinder return.
Design information
(cont.)
VITOCAL
VIESMANN
105
5831388
7
