Thermalec ZENITH ZHR 96, Instruction Manual

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Zenith Range Instruction Manual
Page 12
P
ositioning and piping connection of the heater(cont’d…)
If required levelling screws can be used in the four holes in the base of the heater. These
are used to level the heater. More importantly, they will stop the heater rocking on its
base. If the heater is installed on a shelf, the holes may be used to screw the heater
down. This can be achieved by bolting the heater down, or by using wood screws from
the top.
If the heater is connected to rigid pipework and is floor mounted, the levelling screws,
together with the pipes and cable will usually keep the heater stable.
Direction of flow through the heater
The default direction of flow of pool water through the heater is left to right. This allows
the temperature controller to sense the temperature of the water coming from the pool.
If required, the flow direction may be reversed by exchanging the positions of the probes
of the control thermostat and the safety thermostat. This is carried out as follows:
a) Switch heater circuit breakers to OFF ;
b) Switch main power supply and pump interlock supply to OFF ;
c) Remove main cover;
d) Reverse the two probes. The controller probe is situated at the left-hand end of
the element plate. The safety thermostat probe is situated at the right-hand end
of the element plate and is marked with a short length of white sheathing;
e) Move the thermometer probe to the empty pocket on the left-hand side;
f) Replace and fix the top cover before reconnecting connecting electrical supplies .
Electrical Installation
All electrical work must be carried out by a competent and experienced electrician,
certified according to the regulations in the country of installation.
Earth leakage protection must be provided by fitting a Residual Current Device (RCD) to
installations involving swimming pools or spas. The RCD must be rated to carry the
current drawn by the heater (see table below) and the current drawn by other items of
equipment on the same supply
.
Overcurrent protection must also be provided in the form of a Circuit Breaker. Due to the
continuous high load that will be drawn, the circuit breaker should be rated at least 20%
higher than of the current shown in the following table
.