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CTU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL
10
SECTION 6: FLUE INSTALLATION
6.1 Flue Installation
WARNING
Fire Hazard
Some objects will catch fire or explode when placed
close to heater.
Keep all flammable objects, liquids and vapours the
required distance away from the heater.
Failure to follow these instructions can result in death,
injury or property damage.
The flue must terminate outside of the building.
Flues and air intakes must be a fully sealed system
and correctly sized for the model. Flues should be
assembled as detailed
on Page 10, Figure 3 through
Page 11, Figure 6. The joints between the flue
terminal and the roof or wall must be properly
sealed. If the flue passes through a wall or ceiling of
combustible material, it must be enclosed by a
sleeve of non-combustible material and be
separated from the sleeve by at least a 25 mm air
gap.
Flues and air intakes must be adequately
supported so that the heater does not bear the
weight of the pipes.
For flue termination See Page 10, Figure 3 through
Page 11, Figure 6.
6.2 Type C
12
, C
32
& C
62
Appliance
Room Sealed.
The heaters are designed to be installed as room
sealed appliances. The flue and air intake are run as
separate pipes to the special concentric wall or roof
terminal.
See Page 11, Figure 6.
6.3 Type B
22
Appliance
The flue must terminate outside the building and be
fitted with a low resistance terminal.
See Page 10, Figure 3 through Page 11, Figure 5.
6.3.1 Air Intake Terminal Cover
For Type B
22
appliance installations, an air intake
terminal cover is an available option. The cover is
scored flat sheet metal that must be bent into shape.
See Page 10, Figure 4. Remove and retain the
screws for the air inlet spigot. Use these screws to
attach the cover in position over the spigot.
Figure 3: Flue and Roof Detail
Roof
Flue
Terminal
Metal Sleeve
Masterflash
Soaker Flashing
or Rain Collar.
Flue
25 mm Air Gap to
Combustible Material
Figure 4:
Fold Leg
Down
Fold Foot
Out
Fold Leg
Down
Fold Foot
Out
Description Part Number
Air Intake Terminal Cover (100mm) F078A
Air Intake Terminal Cover (130mm) F077A
Air Intake Terminal Cover