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Calorex Heat Pumps Ltd. · The Causeway, Maldon, Essex CM9 4XD, UK
Technical Manual
PPT8/12/16/22LX/LY SLIMLINE
SD638160 ISSUE 22d
®
4.1 Electrical (Machine
Wiring and Supply)
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 line with EMC2004/108/EC.
Protected supply
to incorporate fuses or motor type circuit breakers (Type C)
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. An earth leakage trip of the
Current operating type (30mA) is recommended to be fitted to all pool
electrics.
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:
Minimum
Maximum
Voltage single phase
207V
253V
Voltage three phase
360V
440V
Frequency - Hz
47,5
52,5
This voltage must be made available at the heat pump while running.
† Note the Isolator must have a minimum of 3mm air gap when turned off.
NOTE: Three phase heat pumps are fitted with a phase protection 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 3N~ 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.
IMPORTANT
The user should be made aware that THE WHOLE installation should be
isolated when working on ANY PART.
