Condensing Pool Heater
12
01/07/09
Roof Terminal
The Vertical Roof Terminal should be fitted in a
minimum of 300mm clear unobstructed space. It is
not permitted to alter the construction of the Termi-
nal, above the roof line, however the concentric
section below the roof line can be altered to suit the
installation.
It is recommended that:
1.
The Installation of the flues are completed before
their connection to the Heater. This will ensure
that any debris that gets into the flues can be
cleared.
2.
That bends in vertical flues are 45 degrees.
3.
Flues may be reduced in length by cutting. The
inner Flue pipe should be cut so it is 5 to 10mm
longer than the outer Air duct. It will ease assem-
bly if the cut edges are cleaned, chamfered and
greased before assembly.
Pool Plumbing
The heater requires water flow and pressure to operate
properly. It must therefore be installed downstream of
the filter and pump. A typical installation is plumbed as
follows:
1.
The Pump outlet is plumbed to the inlet of the Filter.
2.
The outlet side of the Filter is then plumbed to the
inlet of the Heater.
3.
The outlet of the Heater is plumbed to the return line
to the pool or spa. The Pump, Filter and Heater are
plumbed in series.
If it is necessary to install a valve on the return to the
pool then it is recommended that a flow switch is
installed and interlocked with the Heater supply.
The Heater must be located so that any water leaks will
not damage the structure of the adjacent area.
There is no requirement for heat shunt connections to
the Heater, plumbing can be made in standard plastic
1½” or 50mm pipe from the supplied demountables
Use the pressure loss chart on page 5 to select a
suitable pump.
Connection to the Heater can be made from either
left to right, or right to left, it is supplied with the
‘From Pool’ connection on the left. To change, undo
the demount connection on the
right,
complete with
blanking plates, and swap with the connections on
the
left.
Ensure that the Pool Sensor is correctly
positioned in its pocket and the Pressure Switch is
connected after the change.
Fig. 5.0
Flow Rate
The Heaters have a very low resistance to the Pool
Water flow and will tolerate a wide range of flows.
The minimum recommended flow is:
80 litres/min
Pressure Switch
The Heater is protected by an adjustable water
pressure switch that has to close before the Heater
will operate.
It is very important to verify that it turns off when
the water flow is interrupted.
It has an adjustment range equivale nt to
±
1.5 metres
and is factory set for most conditions but can be
altered if required:
1.
With the pump on turn the knurled nut clockwise
until a click is heard.
2.
Turn the nut anti-clockwise a quarter of a turn.
3.
Turn the pump on and off to check the switch
operates correctly.
