Installation Suggestions - Hitecsa EQU-PF 233 Manual De Instalación, Uso Y Mantenimiento

II.6.6

Installation suggestions

IMPORTANT!
The type of system described below could lead to
lime scale forming in the water/refrigerant heat
exchanger. It is therefore recommended to adopt
the most suitable measures to limit this
phenomenon.
When operating as a heat pump, it is advisable to
drain the recovery circuit.
(*) In the case of hot water for human consumption, an intermediate exchanger (BL) should be installed for hygienic reasons (BL). For the same reason,
it is important not to forget to periodically raise the water temperature in the tank in order to disinfect against bacteria such as Legionella Pneumophila.
(**) It is advisable to use a three-way mixer valve to guarantee the minimum recovery (RC100) or desuperheater (DS) inlet temperature.
Particular attention must be paid to the system operating pressure,
which must not exceed the values indicated on the plate of the
individual components and must be within limits so as to prevent the
water in the recovery unit from boiling.
Continuous circulation of water through the recovery unit or the
desuperheater must be guaranteed by means of mixing units.
Closed circuit system (e.g. for heating)
Open circuit system (e.g. for DHW)
17
SECTION II: INSTALLATION AND MAINTENANCE
RC100 – Recovery unit
DS – Desuperheater
M – Pressure gauge
VS – Safety valve
VE – Expansion tank
VSTB – DHW boiler temperature relief valve
VSTR – Recovery unit temperature relief valve
VSM – Manual air bleed valve
VSAM – Automatic/manual air bleed valve
TSB – DHW boiler safety thermostat
VR – Non-return valve
VM – Three-way mixer valve
PU – Circulation pump
PD – RC100/DS consensus differential pressure switch
FC – Fan coil
UT – Upon use
RI – From the water mains
ST – Temperature probe
SI – Intermediate exchanger
ST8 – RC100/DS outlet temperature probe
VSAC – Water safety valve
C – Water supply/drain valve
ST – Temperature probe
FA – Water filter