Safety Unit (Only For France) - DeDietrich MIT-M /E Installation, User And Service Manual

Tab.20
Hydraulic outlet
A
+ Buffer tank
Back-up boiler
Outdoor unit
Fig.19
30
b
a
c
d
e
7756241 - v02 - 19062020
Circuit
A1, B1, C1
Mixed circuit: radiators
B
A1, B1, C1
Mixed circuit: underfloor
heating
B
DHW, DHW1
Domestic hot water pro­
duction
5.6.5
29 9 28
2 cm
(54)
MW-C000711-F
Connections to be made
For each circuit
Install an automatic air vent at the highest point on the heating circuit.
Install two isolation valves.
Install the internal pipe adapter kit for installing an external three-way
valve HK22.
Install the hydraulic module with pump for a mixing zone EA144.
For the C1 circuit only:
Install the PCB + sensor for the mixing valve AD249.
Connect the flow sensor to "Tflow" on the SCB-10 PCB.
For each circuit
Caution
Connect the circuit requiring the highest temperature on
circuit A0 and the circuit requiring the lowest tempera­
ture on circuit B1.
Set the maximum temperature depending on the emitter.
Install an automatic air vent at the highest point on the heating circuit.
Install two isolation valves.
Install the hydraulic module with pump for a mixing zone EA144.
For the C1 circuit only:
Install the PCB + sensor for the mixing valve AD249.
Connect the flow sensor to "Tflow" on the SCB-10 PCB.
Install a domestic water thermostatic mixing valve (not supplied) on
the domestic hot water tank outlet (mandatory for France).
Install the kit comprising the heating/DHW reversing valve + domestic
hot water sensor EH812.
Install a safety unit on the domestic water inlet.
Install a pump (not supplied).
Caution
To ensure optimal operation of the back-up, the flow rate
of the boiler must always be higher than that of the in­
stallation.
3
Install the / " non-return valve and the
4
(not provided).
Install a filter on the boiler outlet.
Do not exceed the maximum authorised pipe lengths.

Safety unit (only for France)

9 Isolation valve
28 Domestic cold water inlet
29 Pressure reducer
30 Safety unit
54 End of the discharge pipe free and visible 2 to 4 cm above the flow
funnel
a Cold water inlet with an integrated non-return valve
b Connection at the cold water inlet of the DHW tank
c Stop cock
d Safety valve 0.7 MPa (7 bar)
e Drain opening
5 Installation
3
/ " nipple on the boiler return
4
MIT-M 29