5. ELECTRICAL (MACHINE WIRING AND SUPPLY)
SEE FIG. 4,5,6 AND 7
All electrical work to be carried out in accordance with l.E.E. standards, latest
issue, or local codes of practice as applicable.
The machine should be installed in accordance with EMC2004/108/EC.
Protected supply
to incorporate fuses or motor type circuit breakers (Type
GU, FAZC) to specified rating, (see Data Sheet). H.R.C. fuses are recommended.
An isolator which disconnects all poles must be fitted within 2m and in sight of
machine.†
All units must be correctly earthed-grounded and an earth leakage trip installed.
Inconsistent Electrical Supply
The following limits of operation must not be exceeded if Calorex machines are
to be guaranteed either in performance or warranty terms:
N.B. This voltage must be available at the heat pump whilst running.
The voltage must not drop below the above figures when starting the machine.
† Note the isolator must have a minimum of 3mm air gap when turned off.
ELECTRICAL
NOTE: AW1234BH , AW1534BH, AW1834BHC, AW3034, and AW7034
machines are fitted with phase protection and will not run if the phases
are not connected in correct order (phase sequence) or if the supply
voltage is 15% less than the nominal voltage. (415V for 3~N 50Hz) .
The lamp on the phase rotation relay, situated in the electric box, is
illuminated when the phases are correctly connected and the voltage is
sufficient. The undervoltage protection feature is not present in phase
protection relays fitted in 220V 3~ 60Hz machines.
Minimum
Maximum
Voltage
Single Phase machines (U.K)
207V
253V
Three-phase machines (UK)
360V
440V
Three phase machines (60Hz)
187V
253V
Three phase ma N (60Hz)
360V
440V
Cycle frequency (50Hz)
47.5Hz
52.5Hz
Cycle frequency (60Hz)
57.0Hz
63.0Hz
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SD331851 ISSUE 28
