Certikin MB35S, Operating, Installation And Servicing Instructions

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Condensing Pool Heater
11
22/12/08
1. Ensure the required service clearance is
available.
2. Fit the 90 degree elbow to the heater and
measure from its outlet face to the wall.
3. Add 5 mm for every 100 mm distance to
1065 mm.
Example:
Distance measured = 480 mm
(5 x 480) / 100 = 25 mm
Flue centre 1065 + 25 = 1090mm
If it is required to reduce the length of the Terminal
the minimum overall length is 300mm. The Flue
duct should be cut 10mm longer than the Air duct.
Terminal Guard
The flue products from this appliance are very low
temperature so a guard is only required if the
terminal is is in a position where it may be dam-
aged. A suitable guard is available from:
TFC Ltd.
01732 351555, Model DK6
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
assembly if the cut edges are cleaned, cham-
fered and greased before assembly.
Plumbing
The heater requires water flow and pressure to oper-
ate properly. It must therefore be installed down-
stream 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
Fig. 5.0
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 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 specify 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, com-
plete with blanking plates, and swap with the
connections on the
left. Ensure that the Pool
Sensor is correctly positioned in its pocket afetr
the change.
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 equivalant to
±
1.5
metres. The switch is factory set for most condi-
tions but can be altered if required:
1. With the pump on turn the knurled nut clock-
wise 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.