3.3.4 Version -W
The 3 way valve is flanged directly to the heat exchanger.
The valve consists of two parts, the base with integrated
valve body and the motor, which can be removed via the
bayonet connection. The valve runs in both settings on a
limit switch, it therefore does not require any electrical
energy except when changing from one valve setting to
the other. The valve can be set to its centre position
manually with the catch of the lever on the motor of the 3
way changeover valve. In this setting, all 3 ways are open
(see Ch. 4.5). In comparison to version -H, version -W is
equipped with connection pipes for connecting a water
heater.
Note:
The expansion tank is integrated in
WTC 15-A, WTC 25-A as well as
WTC 32-A vers. W.
1
3
4
2
1 Heating
flow
2 Heating return
3 Flow to water heater
4 Return from water heater
3.3.3 Version -H-0
Version -H-0 is a unit for heating operation without DHW
preparation. The heating pump and the expansion vessel
are usually fitted on site. When installing the pump on
site it should be observed that a minimum installation
pressure of 1 bar is maintained if the pump is fitted in the
flow. The pressure loss diagram from Ch. 3.2.2 should
be used when sizing the pump. Weishaupt recommend
the pump is installed in the return of the heating system
of the unit.
1
2
1 Heating
flow
2 Heating return
14
3
Summary of Contents for thermo condens WTC 15-A
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