Swift Motorhome Owners Service Manual page 131

ALD E HE ATI N G
Note: The hot water is not intended for
drinking or cooking. When the heater is in
continuous use, it should be emptied ap-
prox. once a month, to ensure that a new
air cushion is formed in the heater. The air
cushion is essential for absorbing pressure
surges in the heater.
Note: The warm water heater should always
be drained of fresh water when there is a
risk of frost and when the motorhome is not
in use.
Note: The warranty does not cover frost
damage.
Draining the heater using the combined
safety/drain valve:
1. Switch off the freshwater pump
2. Open all water taps.
3. Then open the safety/drain valve by raising
the yellow lever (M) to a vertical position.
4. The heater will now drain directly below
the vehicle through the safety/drain valve
hose. Check that all the water is emptied out
(about 7-10 litres). Leave the valve in the open
position until the next time the heater is used.
Note: Check that the automatic check valve
(N) is open and is allowing air to enter the
heater when it is being drained, and that the
hose is not blocked.
Closed
N
130
The heating cartridges
All Compact 3010s are fitted with two 230V
heating cartridges with a maximum output
of either 2100 or 3150W. Select the heating
cartridge output on the control panel.
Always check that the input supply to the
vehicle has the correct amperage in relation to
the selected output.
Note these ratings are for the boiler only.
1050W requires a 6 amp fuse/supply.
2100W requires a 10 amp fuse/supply.
3150W requires a 16 amp fuse/supply.
The circulation pump
A circulation pump is required to circulate the
heated glycol fluid. A 12V circulation pump is
fitted in the expansion tank.
An optional 230V circulation pump can be
fitted on the boiler. Selection of circulation
pump is made with a switch on the control
panel. The room thermostat on the control
panel controls the circulation pump, i.e.
switches it on or off according to the amount
of heat required.
Depending on the specification of your
motorhome, the circulation pump for the
heating system may be in the header tank,
as shown in the diagram on page 130, or, an
inline pump may be fitted on the side of the
Alde heating appliance.
When the Alde inline pump is fitted care
should be taken not to leave the pump in
high speed service operation (setting 4-5) as
this will considerably shorten the life of the
pump. Settings 1-3 are advised for normal
Open
M
operation. Setting 4-5 are for removing air from
the system only. Pumps found to have failed
due to overheating will not be covered under
warranty.
System temperature
The boiler is set to a system temperature of
80°C, i.e. the temperature of the glycol fluid as
it circulates in the heating system.