DeDietrich MIT-M /E Installation, User And Service Manual page 25

Hydraulic outlet
B
Back-up boiler
Outdoor unit
7756241 - v02 - 19062020
Circuit
B1
Mixed circuit: radiators
B
B1
Mixed circuit: underfloor
heating
B
Connections to be made
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 internal three-way valve kit (with motor) and the flow sensor
for the mixing valve HK21.
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.
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.
5 Installation
3
/ " nipple on the boiler return
4
MIT-M 25