Technical data

BWR MTD2
4
BWR_MTD2_0011_0121_201110_EN HFC 410A
Source water circuit
Main components in the source water circuit:
- source pump
- water differential pressure switch
- system vent
- drain valves
- threaded male fittings
Power and control electrical panel
Electrical control panel built in compliance with EN 60204-1/IEC
204-1, complete with:
- main door lock disconnect switch,
- thermal cut-out switches and contactors for the compressors,
- remote ON/OFF terminals,
- remote keypad connection terminals,
- manual summer-winter changeover terminals,
- terminals for connecting system and ground source flow switch-
es,
- alarm signal terminals, / secondary pump / dehumidifier,
- compressor start-up signal terminals,
- outside air temperature sensor terminals,
- outlet electric heater or boiler terminals
- DHW storage electric heater terminals
- electronic controller,
- phase control boards for managing modulating pumps,
- safety fuses,
- compressor start capacitor (single-phase units only),
- IP54 index of protection,
- electrical panel for outdoor installation, with two doors and
gaskets
- numbered control circuit cables,
- phase sequence control relay
- pump enabling relay,
- terminals for three-way valve and DHW storage temperature
sensor
- remote COOL/HEAT terminals,
- peak limiter for single-phase units only
VERSIONS AVAILABLE
BWR MTD2 Reverse-cycle ground source heat pump with
domestic hot water production. Built-in water
circuit assembly and peak limiter for single-
phase units.
SUPPLIED AS STANDARD
- N-THC remote control complete with backlit display, tempera-
ture probe, humidity probe, knob and 4 buttons (must be
installed)
- Outside air temperature probe for climate compensation (must
be installed)
- Domestic hot water probe
- Storage tank probe
- Rubber vibration dampers
ACCESSORIES
- N-THC wired room timer thermostat with backlit display, com-
plete with temperature and humidity probe for system configu-
ration.
- N-EM1 expansion module for system configuration.
- 3-way selector valve for domestic hot water production.
- Supplementary electric heater for the heating system.
- DHW storage electric heater, as supplementary heat source
and for Legionella prevention.
- N-CM kit for managing heat pumps in cascade.
- N-RS RS485 serial card for ModBus protocol.
- Low-loss header, 35, 100 or 200 litres.
- Domestic hot water cylinder, 300 or 500 litres.
- Domestic hot water storage tank, 300 litres, to be combined
with the DOMH2O instant domestic hot water production kit.
- Domestic hot water storage tank, 300, 500 and 1000 litres
with solar heating coil, to be combined with the DOMH2O
instant domestic hot water production kit.
- DOMH2O15 and DOMH2O24 instant domestic hot water pro-
duction kit.