Connecting A Domestic Hot Water Tank - DeDietrich 24 Installation And Service Manual

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6 Installation
Caution
Before connecting the pipes, remove all the protective plugs.
Caution
For heating only boilers. If the heating system is filled via the sanitary water circuit, install a disconnector device in
the sanitary water filling pipe in accordance with the regulations in force.
6.3.3

Connecting a domestic hot water tank

The boiler is electrically preconfigured for connecting an external tank. The tank's hydraulic connection is shown in the figure
below. Connect the NTC domestic hot water priority sensor to terminals 3-4 of terminal board M2. The sensing element of the
NTC sensor must be inserted into the correct well provided on the tank. Check that the exchange output of the tank coil is
correct for the boiler output. The domestic water temperature (+35°C...+60°C) is adjusted using the knob
Important
Check that the parameter DP200=1
Important
Set parameter DP004 to enable the anti-legionella function and parameter DP160 to set the maximum temperature
value while the function is running.
A Heating installation
B Motorised three-way valve
C Heating circuit flow
D DHW tank heating flow
E Heating circuit return
F DHW tank
G DHW tank temperature sensor
Fig.109 DHW tank connection
168 INIDENS
B
C D
A
M2
CH ENABLE
E OS
OT - RT
R-bus
On/Off
M2
F
BO-7772478
.
TS
G
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