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Idiomas disponibles
Idiomas disponibles
Set-up of a 3-way heat pump and domestic hot water production (DHW) and possibly a desuper-
heater (DS) at the same time
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
with pumps as an alternative to the traditional solution that sees them 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. If a
3-way valve is included in the system, the production of hot water towards the domestic hot water circuit can be managed in both summer and winter; in
fact the valve diverts the water flow from the system to the technical water storage tank for the domestic hot water production system (domestic hot water
diverter valve CACS consent + domestic hot water valve VACS control). The desuperheater, with which the machine can be fitted, must be connected to
the same technical water storage tank for the DHW production system , 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).
Priority management and domestic hot water DHW request (3-way switch-over valve and activation
of any DS-DSVP)
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 understands
that there is a DHW request and, once the conditions have been verified, the procedure is activated to meet the DHW requirements;
by means of temperature probe in the storage tank: a temperature probe is placed inside the storage tank, which is directly connected to the unit board.
The required set point can be configured from the panel together with the relative activation differential. In this case, the probe must be accurately posi-
tioned and the maximum distance allowed respected due to the type of probes used.
The software manages two types of probe selectable from the keyboard
description
NTC150
NTC (*)
(*) default
2.7.2. FNR ACCESSORY - FORCED NOISE REDUCTION
The FNR-Q accessory allows a variable acoustic layout of the unit, managing the silence in chiller mode according to the specific user needs. The acces-
sory is available for EQRU chillers and for EQRHU reversible heat pumps, adequately fitted with some accessories described in the table below.
ADVANCE range of heat
pumps and chillers
EQRU-EQRHU 2160÷4350
The unit is quietly controlled according to 3 modes that can be selected by acting on the control panel on the machine, using digital input and / or program-
ming time slots. The type of FNR mode (FNR1 or FNR2), activated by digital input, must be defined via the control panel. For the configuration of the
digital input, refer to the manual "Commands and controls".
Unit operation with standard logic (T version) but with better "soundproofing"
IOM_EQRU-SS_EQRHU-SS_2160a4350_208676_230601_ES-EN-FR-DE-IT
89
type of probe
NTC HT150
50kΩ@25°C
NTC
10kΩ@25°C
Mandatory ACCESSORY
FNR-Q
Chiller or Heat pump
1
System user side storage tank
2
Pump
3
3-way valve - Not supplied
4
User-DHW
5
System recovery side storage tank
6
β (25/85)
features
3977 (±1%)
3435 (±1%)
Mandatory ACCESSORY for com-
pressor soundproofing
BCIP
EQRU-EQRUSS
EQRHU-EQRHUSS
Tmax
120°C
90°C
Mandatory ACCESSORY to adjust
the fan speed
FI or FIEC
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