Connecting The External Sensor; Dhw Expansion Vessel (Available On Request) - DeDietrich MS 24 BIC FF Operating And Installation Instructions

26. CONNECTING THE EXTERNAL SENSOR

The wiring harness leaving the control board includes two RED wires fitted 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".
"kt" curves

27. DHW EXPANSION VESSEL (AVAILABLE ON REQUEST)

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.
Connect the hose (supplied as an accessory in the expansion vessel kit) to the two connectors A and B as shown in figure.
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 fitted to the water supply line
- the water supply network is insufficient for the expansion of the water contained in the storage boiler and it is necessary
to use the DHW expansion vessel.
INSTALLATION INSTRUCTIONS
TM
TM = Flow temperature range
Te = External temperature
79
+/-
.
Te
Graph 2
71.06199.02 - EN