3. PRESENTATION
AERMEC presents the new
WRL-H, UNITS, GAS SIDE REVERSIBLE
HEAT PUMPS, OPTIMISED FOR
GEOTHERMIC SYSTEMS that are water-
cooled and operate with R410A
refrigerant.
They are INDOOR UNITS with hermetic
scroll compressors that perfectly meet
the requirements of the residential
market:
High performance
These units have been designed
optimising functioning in heat pump
mode, allowing to reach high
efficiencies.
Easy installation
The electric and hydraulic connections
are all positioned in the upper part
of the unit facilitating the installation
and maintenance operations. This also
allows to reduce the technical spaces
and their positioning in as smaller space
possible.
Silent
The WRL-H units are distinguished for its
working silence.
Careful soundproofing of the unit with
suitable sound-absorbent material
confer all units with noise limits such
to consent the use of the WRL-H
heat pumps also in homes and not
necessarily in dedicated technical
rooms.
Dynamic set point
The electronic regulation, via the aid
of an external air temperature probe
(ACCESSORY) and according to the
external conditions, automatically
modifies the set point of the system
water temperature, thereby improving
the energy efficiency of the system.
optimised for:
1. GEOTHERMIC SYSTEMS
Production of water for heating
systems for systems with FAN
COILS, RADIANT PANELS OR LOW
TEMPERATURE RADIATORS, up to
60°C.
2. PRIORITY PRODUCTION OF
DOMESTIC HOT WATER (DHW).
Production of DHW with priority
logic is guaranteed in summer and
winter mode.
V3V
1
2
3
13
13
4
5
9
10
12
III III
6
7
8
M
7
7
6
7
8
M
15
14
7
7
11
AREA 1 AREA 2/3
NOTE:
VMFCRP can control:
1. n° 2 STA/STH or n° 2 pumps (digital
contacts).
2. n° 1 mixing valve (analogue contact) –
SSM probes kit necessary.
Examples of hydraulic layouts
ATTENTION
The units are shipped with
n.1 TEMPERATURE PROBE
FOR A POSSIBLE STORAGE
TANK.
4. SYSTEM EXAMPLES
The WRL heat pump can manage up to a maximum of 3 ZONES
ZONE N° 1: Managed as per standard thanks to last generation electronic regulation. It is recommended to mount the
"SSM" electronic marking probe (accessory) to control the fl ow temperature. (The unit is shipped with n.1 temperature
probe for a possible DHW storage tank.)
ZONE 2 and ZONE 3 are managed using the VMFCRP + SSM accessories for each zone.
E.G. The heat pump is connected directly to the utility circuit (SYSTEM) and produces domestic hot water (DHW) via the
management of a 3-way diverter valve, connected to a storage tank.
The DHW production has priority over that of the system.
The system example below refers to
a 3-way diverter valve installation to
produce DHW and various types of
utilities (Radiant panels, Fan Coils,
Radiators).
KEY:
1. WRL-H
2. External air temperature probe (ACCESSORY)
3. Remote control panel
4. Three-way valve
5. Safety valve
6. Mixing valve Zone 1
7. Pump (ATTENTION: The pumps are not managed in areas 2 and 3)
8. Water temperature probe
9. Additional expansion vessel (if necessary)
10. Domestic hot water storage tank “DHW” (not supplied)
11. Storage tank probe
12. Integrative electric resistance (not supplied)
13. STA - STH “Zone control panel” (accessory)
14. VMFCRP (accessory, necessary to control Zones 2 and 3)
15. SSM (accessory, necessary to control Zones 2 and 3)
7
IWRLTY. 1201. 5890974_06
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