RHOSS TCAEBY 269 Mode D'emploi page 71

,2. Set-up of a 3-way heat pump (VDEV) and domestic hot water production (DHW) and possibly a desuperheater (DS) at the same time
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With this type of system, the main circuit of the heat pump produces DHW (winter season) or DCW (summer season) for the user. The unit can be set-
up as a pump or pump and storage tank as alternative to the traditional solution seen installed in the system. For the production of DHW by using the
heat pump, use a technical water storage tank, which cannot be used directly for human consumption, and combine it to a DHW producer/intermediate
heat exchanger.
Should a 3-way valve system (VDEV) be envisaged , it can manage production of hot water to the DHW circuit in both the summer and winter seasons.
, and is able to keep the heat storage tank level high. This way, the system allows maximum service continuity to the DHW and system, regardless of
the operation mode (summer or winter).
How to manage the DHW request:
•
by means of the discrete input: the request is assigned by a thermostat (e.g. via a KTRD accessory). When the thermostat closes, the unit under-
•
by means of a temperature probe in the storage tank: a temperature probe is placed inside the storage tank, which is directly connected to the
be accurately positioned and the maximum distance allowed respected due to the type of probes used.
Type of probe:
description
NTC150
NTC
Section II :: Installation and maintenance
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type of probe
NTC HT150
NTC
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1 Heat pump
2 System user side storage tank
3 Pump
4 3-way valve (VDEV)
5 User-DHW
6 System recovery side storage tank
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features
EN
3977 (±1%)
3435 (±1%)