E-31
English
Start-Up: Air-to-Water Heat Pumps 10
9.7.3 Swimming Pool Water Circulating Pump
The swimming pool circulating pump operates while the
swimming pool water is being heating. The swimming pool water
heating can be interrupted at any time by a request for domestic
hot water, defrosting or by raising the heating characteristic
curve (e.g. after lowering the temperature at night), but not by a
“more” signal from the heating controller. If the request is still
pending after the swimming pool water has been heated for 60
minutes, the swimming pool circulating pump is switched off for 7
minutes and the heat circulating pump is switched on to supply
the return flow sensor with the representative temperature of the
heating circuit again. If the heating controller generates a “more”
signal during these 7 minutes, the request for heating will be
processed first.
NOTE
In the summer operating mode, swimming pool water preparation is not
interrupted after 60 minutes by a flushing period.
9.7.4 Auxiliary Circulating Pump
The output of the auxiliary circulating pump can be configured to
allow parallel operation of the auxiliary circulating pump and the
heat pump's compressor. Configuration is possible for heating,
DHW preparation and swimming pool water preparation. It also
operates if the return temperature has fallen below 15 °C, or the
temperature has fallen below 6 °C on the flow sensor of air-to-
water heat pumps.
In the summer operating mode, the auxiliary circulating pump
operates for 1 minute every 150 hours.
9.7.5 Primary Pump for Heat Source
The primary pump delivers the energy of the heat source to the
heat pump.
The well water or brine circulating pump always operates if the
heat pump is switched off. It starts 1 minute before and switches
off 1 minute after the compressor.
In the case of air-to-water heat pumps, the ventilator is switched
off during defrosting.
10 Start-Up: Air-to-Water Heat Pumps
When the voltage is recovered, air-to-water heat pumps start
with defrosting at external temperatures lower than 14 °C or 10
°C. The return temperature must be at least 18 °C to prevent
defrosting being terminated by the minimum permissible
temperature being undershot on the flow sensor.
By activating the start-up function, the 2nd heat generator is
enabled for a period of one hour, defrosting is disabled and the
current defrosting process is terminated.
The heating pump operates continuously during start-up and
requests for domestic hot water or swimming pool water are
overridden.
NOTE
At low heating water temperatures, heat up the buffer tank first before
gradually opening the individual heating circuits.
Type of heat pump Primary pump
Air-to-water heat pump Ventilator
Brine-to-water heat pump Brine circulating pump
Water-to-water heat pump Well pump
To Next Page
Loading...
Need help?
General
