43
1002594 ISSUE 1 M172 VARIHEAT
Electrical safety
It is important to ensure that all aspects of the installation comply with the
latest I.E.T. Regulations. It is also important to ensure that any remote devices
which terminate within the pool hall are of the type and voltage as specified in
the I.E.T. Regulations latest edition.
The machine should be installed in accordance with EMC2004/108/EC.
Protected supply
Whilst not mandatory, Calorex recommend that an R.C.C.B. is always fitted or
that the supply is to local electricity authority recommendations, and that all
ducting is bonded in accordance with these regulations.
The supply to the machine should incorporate fuses or motor rated circuit
breakers (Type C) to specified rating, (See section 5.0 Variheat DATA SHEET
on page 56.) H.R.C. fuses are recommended. An isolator must be fitted
within clear view and not more than 2 metres away. The isolator must have a
minimum 3mm air gap in the off position.
All units must be correctly earthed/grounded. An earth leakage trip 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:
Voltage
Minimum
Maximum
Single phase machines
207V
253V
Three phase machines
360V
440V
Frequency
47.5Hz
52.5Hz
Note:
The voltage must be measured at the heat pump mains terminals with
all the fans/compressors running at the rated load condition.
Correct cable sizing
The cable supplying electricity to a machine with a given load must increase
in cross sectional area (C.S.A) as the length increases in order that the voltage
drop within the cable does not exceed recommended limits.
Cable sizing
should be calculated by an approved electrician with due consideration
to I.E.E and local codes of practice.
Note:
Three phase Variheat models 1200 and 1500, are fitted with phase
protection and will not run if phases are connected incorrectly.
Warning:
The red lamp adjacent to the control panel indicates that the Variheat
is live. It is necessary to wait three minutes after the supply is disconnected
before removing any panels or commencing servicing of the Variheat.
Power supply terminal block layout
single phase
N
L
L
2
3
N
1
N L1
L3
L2
4
5
L1
L2
L3
3
N
1/L1
3/L2
5/L3
2
1
Switched fuse
isolator
see data sheet
for ratings
Power supply terminal block layout
three phase
Switched fuse
isolator
see data sheet
for ratings
Switched fuse
isolator to be
within 2m (6 feet)
and within sight
of front of unit
Switched fuse
isolator to be
within 2m (6 feet)
and within sight
of front of unit
Power supply terminal block layout
single phase
N
L
L
2
3
N
1
N L1
L3
L2
4
5
L1
L2
L3
3
N
1/L1
3/L2
5/L3
2
1
Switched fuse
isolator
see data sheet
for ratings
Power supply terminal block layout
three phase
Switched fuse
isolator
see data sheet
for ratings
Switched fuse
isolator to be
within 2m (6 feet)
and within sight
of front of unit
Switched fuse
isolator to be
within 2m (6 feet)
and within sight
of front of unit
3.7 ELECTRICAL INSTALLATION
Summary of Contents for Variheat AW1200
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