De Dietrich MS 24 BIC - Инструкция по эксплуатации - Страница 80

79

71.06199.02 - EN

INSTALLATION INSTRUCTIONS

26. CONNECTING THE EXTERNAL SENSOR

The wiring harness leaving the control board includes two RED wires itted with faston covers. Connect the external sensor 
to these two wires.
With the external sensor connected, the “

kt

” curve (Graph 2) can be changed by pressing 

+/-

.

N.B.: In case of installation in an average living unit (good perimeter insulation and radiator systems), set the “

kt

” climate 

curve to “25”.

TM

 = Flow temperature range

Te

 = External temperature

Graph 2

TM

Te

“kt” curves

1012_0501

DHW expansion vessel kit comprising:
- 1 stainless steel expansion vessel;
- 1 support for expansion vessel;
- 1 nipple G1/2”;
- 1 lock nut;
- 1 connection hose.

27. DHW EXPANSION VESSEL (AVAILABLE ON REQUEST)

Connect the hose (supplied as an accessory in the expansion vessel kit) to the two connectors A and B as shown in igure.
The DHW expansion vessel should be mounted if:
-   the pressure of the water supply or lifting system is such as to require the installation of a pressure reducer (pressure 

higher than 4 bar)

-   a non-return valve is itted to the water supply line
-    the water supply network is insuficient for the expansion of the water contained in the storage boiler and it is necessary 

to use the DHW expansion vessel.