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Alternatively, wooden battens may be screwed to the sides of the recess, from front to back, bearing down
on the top of the cabinet to hold it firmly, as shown at A, fig. 4. Whichever method is used, it must be
possible to remove the refrigerator easily for subsequent servicing purposes. The brackets or battens must
be in a position where they will not restrict the air circulation over the cooling unit; they must not be
positioned across the cabinet over the fins of the condenser of the cooling unit at the rear, otherwise air-
flow will be impaired and performance affected.
Fitting the Upper Ventilator
To fit the upper ventilator, screw a block of wood approx. 25mm (1") square x 66mm (25/e") long, to each
side of the recess, 16mm (5/e") back from the front edge, as shown at B, fig. 4. Secure the ventilator to the
blocks with a screw through the hole provided at each end.
Additional Ventilator
To reduce the amount of heat entering the caravan,
particularly when used in warmer climates, an
additional ventilator (A, fig. 5), may be fitted in the wall
of the vehicle, preferably above the level of the top of
the refrigerator. (The exterior flue venting kit must still
be used).
All surfaces above and adjacent to the flue outlet, and
beside and below the burner housing should be of, or
protected by, metal or other inflammable material.
8. VENT HOLE UNDER REFRIGERATOR
A ventilation hole of not less than 13cm2 (2in2) effective area (40mm or 1 5/8" diameter) must be provided
in the floor below the refrigerator as shown in fig. 5. The hole should lead directly to the outside air through
the floor or wall so that, in the event of a gas leak, it would provide an escape outlet for the heavier-than air
gas. It should not be too close to the burner where draught could affect the flame.
On mobile installations, the vent hole should be shielded against entry of mud etc.., by a deflector as
shown in fig. 5a, fitted underneath with its "closed" end facing the front of the vehicle. The deflector should
be made from a suitable piece of metal, to suit the particular installation.
9. FLUE ARRANGEMENT
Flue Baffle
The flue baffle (4, fig. 10) must be in position in the central tube of the boiler, suspended on its support
wire so that the lower end of the baffle is 75mm (3") above the bottom of the central tube over the burner.
The top end of the baffle support wire is bent into the shape of an "0," and rests horizontally on the top of
the central tube. The baffle is correctly positioned during the manufacture and should not become
displaced during normal use. If the flue baffle is missing or is incorrectly located, the cooling unit will not
operate properly on gas. Any strapping tape used to retain the baffle support wire to the top of the boiler
casing during transit should be removed before installation.