Ignition Control.
Gas Valve.
Fan.
Pump.
Expansion Vessel
3 Port Valve Head and Motor
Heat Exchanger.
Secondary Heat Exchanger.
On the Electrical Chassis
To access these items first remove the Front Top
Panel and then the Chassis Cover.
Pool Thermostat
(
See Fig. 13.0
)
Pull off the Thermostat Knobs.
Release the Rear Retainer by undoing the two
screws.
Pull off all the PCB connectors.
Slide out the Thermostat.
Replacement is the reverse.
Condensate Pressure Switch
(See Fig. 13.0
)
Undo the single fixing screw.
Pull off the two electrical connectors and transfer
to the new Switch. They connect to the ‘C’ and
‘NC’ connections.
Replacement is the reverse
Heater Components
The remainder of the parts can be accessed
through the front.
Heat Exchanger Flow Sensor
This is located on the front connection to the Heat
Exchanger. (
See Fig.14.4
)
Unclip the sensor from the connection.
Transfer the push on electrical connectors to the
replacement and clip back on.
Heat Exchanger Pool Sensor
This is located in a pocket in the ‘From Pool’ side of
the secondaryheat exchanger.
(
See Fig.14.6)
Pull out the retaining slipper, and pull out sensor.
Disconnect from the four way terminal strip on the
Electrical Chassis.
Replacement is the reverse.
Water Pressure Switch
This is located on the From Pool connection to the
Secondary Heat Exchanger and its removal will
require the draining or isolation of the Pool water in
the Heater. (
See Fig.14.6
)
Pull off the Electrical Connectors
Unscrew from the Secondary Heat Exchanger.
Replacement is the reverse.
If the Water Pressure Switch needs adjustment See
Page 12 for details.
Condensing Pool Heater
27
20/10/10
Control Thermostat
This is located on the front connection of the Heat
Exchanger. (
See Fig.14.4
)
Unclip the sensor from the connection.
Transfer the push on electrical connectors to the
replacement and clip back on.
Overheat Thermostat (manual reset)
This is located on the front connection of the Heat
Exchanger. (
See Fig.14.4
)
Unclip the sensor from the connection.
Transfer the push on electrical connectors to the
replacement and clip back on.
Heat Exchanger Combustion
Temperature Sensor
This is located on the top of the Heat Exchanger, on
the right hand side. (
See Fig.14.1
)
Release the electrical connector by pressing the
latch and pulling up.
Twist the Sensor a quarter turn clockwise and
withdraw.
IMPORTANT
Ensure the O ring seal is fitted correctly
to the replacement before fitting.
Replacement is the reverse.
Flue Thermostat (manual reset)
This is located on the Flue Adapter. (
See Fig.14.1
).
Pull off the electrical connectors.
Slide out from under the clip.
Replacement is the reverse.
Ignition Control
(
See Fig.14.3
)
Undo the single screw holding the Ignition Control
cover.
Release the two electrical connectors by pressing
the latch and pulling apart.
Pull the Ignition Control away from the Gas Valve.
Replacement is the reverse.
Gas Valve
(
See Fig.14.3
)
Remove the Ignition Control, see above.
Release the Gascock by undoing the four shoul-
der bolts holding it to the Gas Valve.
Remove the Offset tube from the Gas Valve and
unscrew the Offset Connector and transfer to the
new Gas Valve.
NB Coil resistances, 2.8k and 1.6k ohms.
Release the Gas Valve from the Venturi by
undoing three screws. (
See Fig.14.3
)
IMPORTANT
Ensure the rubber seal (and orifice if
Propane) is transfered from the old Valve and placed
between the Venturi and Gas Valve before assembly.
Replacement is the reverse.
Fire the Heater and check for gas leaks.
After five minutes check the rate and combustion
is correct to the Datatable. (inside cover). Adjust
using the throttle on the Gas Valve,
(See Fig. 14.3)
.