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Subject to change without notice | 83053600fUK – Translation of the original operating manual | ait-deutschland GmbH
Pull off the green bus connector from the bottom
of the control element and connect the cable as
shown in the terminal diagram, then re-attach the
connector to the control element.
After completing all electrical installation work, close
the switch cabinet inside the unit. Close the unit
if no further installation work inside the unit is to be
performed immediately.
Flushing, filling and bleeding
the system
ATTENTION
The system must be absolutely free from
air before commissioning.
Contamination and deposits in the system can cause
malfunctions.
Flushing, filling and bleeding
the heating circuit
ATTENTION
Do not exceed a pressure of 2.5 bar when
flushing the unit. The drain line of the heat
-
ing circuit safety valve must be closed before
flushing and filling.
Example: HMD 1/E with row tank-connection
Connect hose to the filling and draining tap and
lay it to a drain.
Connect the filling and drain tap at the hydraulic
module (heating water outlet to the heat pump).
Close shut-off valves in the hydraulic module on
the heat pump side. Open shut-off valves of the
module on the heating circuit side.
Example for heating variant:
A
H
000
J
offen
zu
offen
1 Return, domestic hot water
2 Return, hot water
3 Supply, hot water /
domestic hot water
4 Filling stop cock
5 Heat pump
6 Drain
“Switching valve” operating manual
Dismantle the motor of the 3-way valve for the
domestic water heating (accessories). To do so,
remove the U-bolt on the motor base and carefully
pull off the motor from above....
Turn stem through 180° and flush domestic hot
water circuit for approx. 1 minute.
Turn stem through 180° back to starting position
(rounded side of stem points to B).
Flush heating circuit! If necessary, the heating
and domestic hot water circuit can be flushed at
the same time! To do so, turn stem through 30°.
After completing the flushing and filling procedure,
move stem to the starting position and mount the
motor of the 3-way valve.
The unit is bled automatically when the bleeders
(black cap) of the safety assembly are open. If the
heating circuit is filled or emptied, the bleeding
valve opens.
Open shut-off valves in the hydraulic module on
the heat pump side. Close shut-off valves of the
module on the heating circuit side. Close shut-off
valves on site on the heating pump side.