Safety Unit (Except France); Special Precautions For Connecting The Heating Circuit - DeDietrich MIT-M /E Installation, User And Service Manual

Reversible packaged air source heat pump
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5 Installation
Fig.20
30
55
9
27
17
Tab.21
Underfloor heating type installation: maximum temperature of 40 °C
Static height
Expansion vessel
inflation valve pres­
sure
5 m
1 bar
10 m
1.3 bar
15 m
1.8 bar
Tab.22
Radiator type installation: maximum temperature of 70 °C
Static height
Expansion vessel
inflation valve pres­
sure
5 m
1 bar
10 m
1.3 bar
15 m
1.8 bar
30
MIT-M
5.6.6
9 Isolation valve
17 Drain valve
27 Non-return valve
28 Domestic cold water inlet
29
9
28
29 Pressure reducer
30 Safety unit
2 cm
54 End of the discharge pipe free and visible 2 to 4 cm above the flow
(54)
55 Safety valve 0.7 MPa (7 bar)
L000370-C
5.6.7
During connection, it is imperative that the standards and corresponding
local directives be respected.
Ensure that the EPDM sealing elements do not come into contact with
substances containing mineral oil. Products containing mineral oil will
cause permanent serious damage to the material, causing it to lose its
impermeability.
If components made from composite materials are used (polyethylene
connection pipes or flexible hose), we recommend components with an
anti-oxygen barrier.
Germany: anti-oxygen barrier according to the DIN 4726 standard.
Volume of the expansion vessel
Volume of the expansion vessel depending on the volume of the installation (in li­
tres)
75
100
7
7
7
8
10
10
Volume of the expansion vessel depending on the volume of the installation (in li­
tres)
75
100
8
9
9
11
12
13

Safety unit (except France)

funnel

Special precautions for connecting the heating circuit

Caution
Hold the connection at the indoor unit end with a spanner to avoid
twisting the pipe inside the appliance.
Caution
The hydraulic installation must be capable of handling a minimum
flow rate at all times:
If radiators are connected directly to the heating circuit, install a
differential valve between the indoor unit and the heating circuit.
Leave one heating circuit without a thermostatic valve and/or
without a solenoid valve.
Fit drainage valves between the indoor unit and the heating
circuit.
125
150
175
8
8
8
8
9
9
11
11
12
125
150
175
10
11
12
12
13
14
15
16
18
200
225
250
9
9
9
10
10
11
13
13
14
200
225
250
13
14
15
15
16
17
19
21
22
7756241 - v02 - 19062020

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Mit-m /hMono awhp 6 mrMono awhp 8 mrMono awhp 11 mr

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