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Buffer sensors (TPO, TPM)
If a hydraulic separating buffer is used, 2 sensors
must be installed in the buffer. Differing sensor
placements are to be considered for:
•
Heating buffer
•
Heating or cooling buffer and
•
Unifresh
The placement takes place as specified in the hy-
draulic plans.
4.10 Pumps, drives 230 VAC
Pumps, (heating circuit pumps, hot water charge
pumps) as well as drives (mixing valves, etc.) are
connected directly to the control.
A test-run may only be undertaken on a fully-pre-
pared system that is ready for commissioning! A
relay test can be carried out on the OTE control in
order to test the appropriate outputs (actuators).
4.11 Safety thermostat (STB) in heating
circuit
If a non-self-resetting safety thermostat (STB) is
installed on site, this STB is to be installed directly
in the power supply to the heating circuit pump
(not supplied).
4.12 Auxiliary heater hot water
A separate circuit breaker is to be provided in the
distribution box for the optional electrical auxiliary
heater in the hot water tank (Legionella protec-
tion). See El.-diagram in Annex. This function is op-
tional and thus not in the heat pump's scope of de-
livery.
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