Ferroli RVL-I PLUS, Installation And Maintenance Manual

Page: 8 / 92

8
GENERAL FEATURES
Functional diagram of hydraulic compartment
1 Air purge valve
2 Expansion vessel
3 Refrigerant gas connection
5 Refrigerant liquid connection
7 Manometer
8 Flow switch
9 Circulation Pump
10 Heat exchanger
11 Water outlet connection
12 Pressure relief valve
13 Water inlet connection
14.1 Electrical heating tape
14.2 Electrical heating tape
14.3 Electrical heating tape
Temperature probes: TW_in; TW_out; T1 (water probes)
T2B; T2 (refrigerant probes)
1-phase 10~16kW
3-phase 12~16kW
1
2
3
5
T2B
T2 Twin
Twout
8 T1
9
11
13
7 12
10 14.1
14.2
14.3
The user interface consists of a wired remote controller (up to 50 m from the unit) which allows
the management of:
- HEATING AND COOLING SYSTEM , where the heat pump is the sole energy source . The
unit, if activated in heat or cool mode, works by modulating the frequency of the compressor
to maintain the temperature of the produced water to the setpoint value set by the controller .
Through parameter you can use the remote controller (eg . For single-zone systems) as a room
thermostat .
- DOMESTIC HOT WATER PRODUCTION (DHW) . The unit is activated in a heatt mode to
keep the temperature of a DHW tank (not supplied) to the setpoint value . It requires a 3-way
diverter valve (not supplied) and a temperature sensor (T5 probe, L = 10m, provided) to be
inserted into one well of the DHW tank .
- ADDITIONAL SOURCES OF ENERGY (boiler or electrical heater) . Depending on the
parameters set, these sources can be activated in integration or replacement of the heat pump
when the system is used for space heating or for DHW production .
The controller also activate additional energy sources in case the heat pump is not working .
- ELECTRIC HEATER OF THE DHW TANK . The controller can manage the activation of an electric heater inserted in the DHW tank as
a heat integration to the heat pump, for disinfecting function, or as a source of energy reserve for DHW production in case the heat pump
is not working .
FAST DHW . This function can be activated manually and it allows you to give priority to DHW production by activating all energy sources
(heat pumps, electric heaters, boiler) available for DHW heating to bring in the shortest time possible the DHW tank to the setpoint required .
- DISINFECT FUNCTION .
You can set from the controller weekly cycles for disinfecting the water in the Dhw tank . In order to successfully
execute these cycles, the heat pump must be integrated with DHW electric heater or boiler .
- SILENT MODE . If active it allows a reduction of the maximum frequency of the compressor and of the fan speed in order to reduce the
noise emitted and the power absorbed by the unit. There are 2 levels of silencing. Through time programming, you can define for 2 daily
time bands the desired silent level (eg . during the night) .
- ON / OFF using an external contact . The unit can be turned on and off (eg . thermostat / remote switch) via an external contact: in this case
the unit will operate in the mode set by the controller keyboard .
- HEAT / COOL via external contacts . The unit can be activated in heat or cool mode via two external contacts (eg . thermostat that manages
the heat and cool demand / remote switch) .
- ECO / COMFORT . For both modes (heat and cool) it is possible to define daily time bands and corresponding set point for ECO and
COMFORT modes .
- WEEKLY SCHEDULING . It allows a schedulation of 6 time bands for each day of the week: for each time band it is possible to define the
mode (COOL / HEAT / DHW) and the required setpoint .
- Antifreeze protection . Guaranteed for outdoor air temperature down to -20°C, thanks to the management of the electronic board of the
unit which allows you to heat water using antifreeze heater (standard on the plate heat exchanger), the heat pump itself working in heating
mode and the electric booster (if installed) .
- Detailed alarms diagnostics with alarms history .
- Display of all operating parameters .
The control system