Row
-DENCO
Commissioning and Testing
FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications
65
10.10 2-Way ON/OFF valve (optional)
The on-off valve shuts off water flow into the DRC unit (see OVERVIEW DIAGRAM) in
the event of a flood alarm.
The 2-way ON/OFF valve kit comprises:
– valve body
– 24 VAC electric servo control with limit switch
– 2 x 3-piece joints
Fig. 10-15
Connect the servomotor power cable to the special terminals in the DRC electrical
panel (see wiring diagram).
Assembly
For correct assembly of the valve any position is allowed, except where the servo con-
trol is facing downward.
10.11 Temperature and Hhumidity Pprobe (option DRZ-3HSENA.E04)
The temperature/humidity probe is required in order to use the IDM (Integrated Dyna-
mic Management) function. This measures the dew point of the intake air to the DRC
and activates a special alarm signal if the water temperature is below dew point and
consequently there is the risk of dehumidification and condensate forming.
The figure shows the optional temperature and humidity probe.
•
In the event of replacement, release the white plastic cover by pressing point (A)
with a screwdriver or other pointed object; lift the cover (B) to access the fastening
screws (C) and terminals (D).
For the probe electrical connections use shielded cable; the connections to the termi-
nals on the board are shown in the wiring diagram.
Fig. 10-16: Wiring diagram
126 mm
80
A
B
H
T
U
O
M
T
T
U
O
+
C
D