Airwell HRW 07, Installation And Maintenance Manual

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17
ELECTRICAL CONNECTIONS
GENERALITIES
Ensure that the available electrical power supply and the network frequency are matched to the required operating
current, taking account of the appliance’s specific location and the current required to supply any other appliances
connected to the same circuit.
1. Ensure that the unit is supplied with the specified voltage. Two stuffing boxes and one grommet hole
are provided on the side of the appliance. They are used respectively for the power and the control
wiring. The power supply line must be properly dimensioned with a motor supply type fuse or a mains
circuit breaker to protect the circuit against voltage surges. (Refer to the Maker’s Plate for the voltages
to be taken into consideration).
2. Always shut down the power supply to the unit before connecting the thermostat wiring.
PRESSOSTATS SETTINGS
LP : Low Pressure fixed setting: 1.5 bar (20 PSI) reset at 2.4bar (35 PSI)
HP : High Pressure fixed setting: 29 bar (420 PSI) reset at 21 bar (305 PSI).
COLOUR CODE
BK : Black OG : Orange GNYE : Green/Yellow
BN : Brown WH : White RD : Red
BU : Blue GY : Grey VT : Violet
YE : Yellow GN : Green
CONTROL AND REGULATION
RCL : Local control module.
ICT : Anti-freezing protection sensors.
RT : Intake air temperature sensor.
LWT : Outlet water temperature sensor.
SM : Remote ON/OFF switch, 100 m maximum (Not supplied -Please consult us for longer distances).
CLK : CLOCK input remote ON/OFF
KA3 : Flow switch relay
REMOTE MANAGEMENT AND PROGRAMMING MODULE KIT (<100M)
µBMS : Supervision module
FAULT REPORTING OPTION
KA2 : Remote fault reporting relay (3 A max / 230 V)
FAST CONNECTION OPTION AND SEEING "UNDER TENSION"
H1 : Seeing "under tension"
ELECTRIC HEATING BATTERY OPTION
EC1 : Stage 1 heating elements
EC2 : Stage 2 heating elements.
FA : Automatic reset safety thermostats.
FM : Manual reset safety thermostats.