All permanent openings for ventilation should be designed to prevent the entry of
vermin. Where screens are provided, they should not have apertures of less than 6
mm. or greater than 9 mm. in any direction, and they should be accessible for
cleaning. Fine mesh screens shall be avoided as they are liable to become blocked
with dust.
The location of vents and the method of cleaning them should be stated in the
Owners Handbook (Caravans and Boats).
As a guide, the minimum effective free area of vents is stated below in connection
with this water heater. Additional appliances burning gas in the same area would
require additional air requirements.
1. If a D61B, D61E or G11E is installed in an enclosed space in a Caravan Holiday
Home the required ventilation is that as specified in BS 5482 part 2, i.e. 10 cm²
per kilowatt input rating divided between high and low. So the high and low
should be 55.5 cm² for the D61B, D61E and 113 cm² for G11E.
2. Where a D61B or D61E is installed in an open bottomed cupboard in a
Caravan Holiday Home, i.e. in a kitchen, the ventilation requirements are as
stated in BS 5482 part 2. (EN 721).
A.2.2.B PUTTING AN APPLIANCE INTO SERVICE
Checks:
Check that the main water and gas supplies meet the specifications given on the
appliances technical specification plate. Take special care to ensure that the water
and gas pressures are correct. Also make sure that the bottle regulator is large
enough to allow sufficient gas to be supplied to the appliance, bearing in mind the
gas consumption of other appliances on the same gas supply.
• FIXING THE APPLIANCE
To do this you only need to remove the cover. Proceed as follows:
• Remove the control knobs
• Remove the screw securing the front cover, hidden by the water temperature
selector knob.
• Remove the cover from the lugs which secures it to the top of the back plate.
Having selected a location for the water heater in accordance with the requirements
set out in this Manual, the water heater should be fixed to the wall using the
mounting holes on either side of the base plate.
• PUTTING THE APPLIANCE INTO SERVICE
• Before connecting up the appliance, it will be necessary to purge the water and
gas pipework thoroughly, in order to remove filings and other debris.
• Connect the ¾ inch BSP gas coupling/ valve to the appliance, ensuring that the
supplied washer is in place. Gas jointing paste should NOT be used as this is
likely to cause a blockage to the gas inlet filter which will affect the
performance of the water heater.
• Connect the water inlet and outlet pipes to the appliance. Cold to the water
control assembly and hot to left hand side of heater.
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Summary of Contents for D-61B
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