Dimplex M Flex Air, Installation And Operating Instruction

10

DOK4x HOIAO FxDEN · FD 0001

www.glendimplex.de

English

Air-to-water heat pump M Flex

5.2 Indoor unit and optional 

domestic hot water cylinder

The indoor unit and an optional domestic hot water cylinder
must be installed in a frost-free, dry room on an even, smooth
and horizontal surface. The entire base of the indoor unit frame
should lie  directly on the floor to ensure an adequate sound-
proof seal. The surface must have sufficient load bearing ca-
pacity for the weight of the heat pump and the possible domes-
tic hot water cylinder. 
Both parts must be installed so that maintenance work can be
carried out without hindrance. This can be ensured by main-
taining a clearance of approx. 1 m in front of and to the right of
the heat pump. The distance shown on the left side is required
without domestic hot water cylinder for the hydraulic and elec-
trical connection. When using a domestic hot water cylinder,
this is dependent on the structural features of the cylinder.

For installation in a corner, the domestic hot water cylinder in-
stallation can only take place once the hydraulic, electrical and
refrigeration lines have been connected to the indoor unit.
The domestic hot water sensor pre-installed on the indoor unit
must be inserted in the designated immersion sleeve of the cyl-
inder.
Neither frost nor temperatures higher than 35 °C must occur in
the installation room at any time of the year. The heat exchange
surface of the domestic hot water cylinder used must match
the heat output of the heat pump.

The minimum volume of the room where the heat pump is in-
stalled must be no less than the following value depending on
the refrigerant quantity in the device:

If the refrigerant quantity is increased, the room volume must
be calculated according to the following formula:
[minimum permissible room volume m³] = 
[refrigerant quantity in kg] / [permissible concentration 0.39
kg/m³]

5.3 Acoustic emissions

The heat pump operates silently due to efficient sound insula-
tion. Internal insulation measures should be carried out to pre-
vent vibrations from being transmitted to the foundation or to
the heating system.

1,0 m

1,0 m

0,6 m

Perfor-

mance level

Amount of 
refrigerant

Permissible 

concentration in 

the installation 

room according 

to DIN EN 378 

(Tab. C.3)

Minimum per-

missible room 

volume for 

indoor installa-

tion

M Flex 0609

3.80 kg R410A

0.39 kg/m³

9.7 m³

M Flex 0916(M)

4.78 kg R410A

0.39 kg/m³

12.3 m³