DeDietrich MIT-M /E Installation, User And Service Manual page 27

Tab.19
Hydraulic outlet
A
B
7756241 - v02 - 19062020
Circuit
A0
Direct zone: radiators
A
A0
Direct zone: underfloor
heating
A
DHW
Domestic hot water pro­
duction
A1, B1, C1
Mixed circuit: radiators
B
A1, B1, C1
Mixed circuit: underfloor
heating
B
Connections to be made
Caution
In case of a direct circuit with radiators fitted with ther­
mostatic valves, install a differential valve to ensure flow.
Install an automatic air vent at the highest point on the heating circuit.
Install two isolation valves.
Install the HK150 differential valve if thermostatic valves are present
on the radiator circuit.
Install an automatic air vent at the highest point on the heating circuit.
Install two isolation valves.
Install the safety thermostat wiring kit for direct underfloor heating
HA255.
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.
For each circuit
Caution
Connect the circuit requiring the highest temperature on
the A0 circuit and the circuit requiring the lowest temper­
ature on the A1, B1 and C1 circuits.
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 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 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.
5 Installation
MIT-M 27