Hitecsa EQRU2160 Installationsanleitung Seite 88

The following information is indicative. The provided diagrams are not complete and are used only to provide guidelines that allow a better use of the unit.
NOTE: The unit can be equipped with the DSVP accessory (desuperheater with variable rev electric pump and VM 3-way valve).
Chiller or heat pump set-up with DS-DSVP or RC100
Chiller
With this type of system, the main hydraulic circuit of the chiller is connected to the user and produces cold water for air conditioning. 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. The desuperheater (DS), with which the
machine can be supplied, will be connected by means of a technical water storage tank and external pump for DHW or to the system to produce hot water
for the post-heating coils of the CTA or other applications (alternatively the DSVP accessory is available, in which the DS is equipped with a pump and 3-
way mixing valve). RC100 total recovery, as an alternative to DS, can be used in the same applications, however, the amount of heat produced is signifi-
cantly higher and, at the same time, the heat level of the water produced is lower.
Heat pump with partial recovery (DS-DSVP) - 2-Pipe+DHW system
Should the unit be a reversible heat pump, summer operation is the same as the aforementioned situation of the chiller. Instead, with winter operation, the
user has DHW produced from the heat pump. If the unit is equipped with a DS or DSVP desuperheater, this can be also active in winter mode. However,
in this case, this value is deducted from the portion of heat from the hot water produced from the main heat exchanger.
Activation and deactivation of DS-DSVP and RC100
The units (CHILLER) with desuperheater DS-DSVP or total recovery RC100 and the units (HEAT PUMPS) with desuperheater DS are equipped with the
possibility of activating the heat recovery through an external digital consent "CRC100-CDS consent recovery" indicated in the wiring diagram example
using the KTRD accessory).
Moreover, the criterion to stop the thermal recovery can be established from the panel.
 for digital contact "CRC100-CDS consent recovery": if the consent is interrupted, heat recovery will cease. This mode meets the requirement to carry
out a temperature control system of the tank connected to the recovery;
 for maximum temperature: in this case the "CRC100-CDS – recovery consent" must always be enabled. The maximum recovery temperature limit is set
from the panel on the machine (see manual Electronic controls) or from the remote keypad (KTR accessory). The recovery keeps operating until the
recovery temperature is below the set limit;
IOM_EQRU-SS_EQRHU-SS_2160a4350_208676_230601_ES-EN-FR-DE-IT
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Chiller or Heat pump
1
System user side storage tank
2
Pump
3
System recovery side storage tank
6
EQRU-EQRUSS
EQRHU-EQRHUSS