Page 10 SD092750 ISSUE 34
To be in accordance with I.E.E. standards latest issue
or local codes of practice, also EMC 2006/108/EC.
Protected supply to incorporate fuses or motor rated
circuit breakers to specified rating, (see Data Sheet).
H.R.C. fuses are recommended. An isolator must be
fitted within 2m and in sight of the machine.†
All units must be correctly earthed/grounded. An earth
leakage trip of the current operating type is
recommended to be fitted to all pool electrics.
Inconsistent Electrical Supply
The following limits of operation must noy 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.
† Note the Isolator must have a minimum of 3mm air
gap when turned off.
Voltage Minimum Maximum
Single Phase Machines (U.K) 207V 253V
Three Phase machines (U.K) 360V 440V
Single Phase Machines (60Hz) 187 253
Three Phase machines (60Hz) 187 253
Cycle Frequency 50Hz 47.5Hz 52.5Hz
Cycle Frequency 60Hz 57.0Hz 63.0Hz
INTERLOCK
All units have interlock circuits incorporated in control
circuit brought out to two terminals. These terminals are
shorted out for factory testing.
On site the shorting loop should be removed and two
wires taken to pair of voltage free contacts in water pump
starter/contactor/relay so that Heat Pump cannot operate
unless water pump is operating (see page 18 fig 9).
Note
1200 and 4000 three phase machines are fitted with a
phase rotation relay and will not run if the phases are not
connected in the 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 3~ 60Hz
machines.
4.1 Electrical
(MACHINE WIRING AND SUPPLY)
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