Hitecsa EQS 2335 Manual Del Usuario página 66

System suggestion of the unit with accessory rc100/ds and dhw
production management
IMPORTANT!
The type of system described below could lead to
lime scale forming in the water/refrigerant heat
exchanger. We therefore recommend taking
suitable steps to limit this phenomenon.
Pay particular attention to the operating pressure of the system that
must not exceed the plate values on the individual components and
must be such to avoid the boiling of the water contained in the recovery
unit.
The units are not direct generators of DHW for human use; therefore, an indirect system with technical water storage tank and instantaneous producer
of DHW for human use are required.
Recovery unit (accessory)
RC100
Desuperheater (accessory)
DS
Manometer
M
Safety valve
VS
Expansion vessel
VE
Recovery heat drain valve
VSTR
Manual air bleed valve
VSM
Automatic/manual air bleed valve
VSAM
Unit board
AP1
Check Valve
VR
3-way mixing valve
VM
Circulation pump
PU
Moreover, via the mixing units, ensure correct water circulation via the
recovery unit or the desuperheater, as well as making sure the
minimum water inlet temperatures to the recovery unit are as follows.
The minimum water inlet temperature allowed is at recovery RC100 is
20 .
The minimum water inlet temperature allowed is at recovery RC100 is
40 .
PLEASE NOTE: for the unit to operate properly, activation of the
DC/RC100 recovery pump must be controlled by means of the specific
digital outputs envisaged on board the unit (see the wiring diagram):
KPER: recovery unit pump control
KPDS: controls the desuperheater pump
Closed circuit system (for heating, for example)
Open circuit system (for hot water, for example)
R
PUR
FC
UT
ST YES
AAT
C
TRD
FA
ST5
ST6
ST7
68
IS
AU
Cock
Recirculation loop circulation pump
Fan coil/utility
For use
Temperature probe
Intermediate heat exchanger
Technical water storage tank
Water drain/charge cock
Recovery activation thermostat by the installer (KTRD -
thermostat with display supplied by HITECSA as an
accessory)
Water filter
RC100 inlet temperature probe
RC100 outlet temperature probe
DS inlet temperature probe
EQS
DHW indication
(tap, shower, sink)
Other utilities