Dhw expansion vessel (available on request), Connecting the external sensor – DE DIETRICH MS 24 BIC User Manual
Page 79
79
71.06199.02 - EN
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”.
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 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.