Airwell PAC HT 14-7 Engineering Data Manual - Page 4
Browse online or download pdf Engineering Data Manual for Heat Pump Airwell PAC HT 14-7. Airwell PAC HT 14-7 20 pages. High temperature air-to-water heat pumps
Print Page
General Characteristics (continued)
Standard equipment
The PAC HT is supplied with the following standard equipment :
Electrical box including electrical safety devices, circuit breakers, fuses.
Electronic controller and its keypad screen.
Communicating room terminal.
Main disconnect switch.
Start-up current limiter (depending on models).
Phase sequence controller (three phase models).
Refrigeration circuit with its safety devices.
Hydraulic kit comprising : 3 speed circulation pump, flow controller,
automatic bleed, drain, pressure gauge, safety valve (3.5 bars).
4 pads for sound insulation under the casing.
Exchanger protection grille.
Water filter.
1 filter stop valve.
Control
The water law parameters are programmed in the controller at the factory. It
is possible to adapt them more precisely to the specific features of the home
when the PAC HT is being installed :
Base outdoor temperature at the site of the home.
Home heat losses compared against the base temperature for an ambient
temperature of 20° C.
Inlet water temperature for the corresponding heat emitters.
The indoor terminal controls the ambient temperature. The water law can
be altered depending on the desired comfort temperature and the variance
between that and the actual measured temperature.
Functions accessible via the indoor terminal:
Clock settings (times and day).
Ambient temperature set point.
Unoccupied period management.
Comfort / forced economy modes.
4
Options and accessories
Accessories available for fitting on site :
Vibration absorbent pads.
Water valves with pressure tapping.
Set of hoses – Length 1m, Ø 1 inch.
3-way directional valve to be used with domestic hot water tank and/or
boiler relief.
300 litres water tank for Domestic Hot Water production and 2.5 kW
fitted and wired electric heating resistance. 230 V single phase or 400
V three phase. DHW production management and Legionnaires' disease
protection controlled entirely by the PAC HT's standard controller.
Additional electric heating, independent of the heat pump, to be fitted in
the circuit. Capacity : 6 kW, 2 stages : 2 kW + 4 kW. This option is
available for new installations or boiler replacement only.
Filter (sludge trap)
Buffer/Mixing tank, 140 litres.
Freezing protection mode.
Unit fault display in the form of error codes.
All the parameters needed to manage DHW production are accessible on the
control display located inside the machine. Several DHW production modes
are available :
Comfort mode :
Priority given to DHW production without any time or
electricity tariff constraints.
Economy mode :
DHW is only produced during off-peak periods or in
accordance with times programmed in the controller.
Immediate running :
The machine keypad can be used to force DHW
production. At the end of the cycle the system reverts automatically to
normal running.
The Legionnaires' disease protection function is included in the standard
control system.