COMBAT
®
CTU UNIT HEATERS INSTALLATION OPERATION AND SER VICE MANUAL
14 of 46
SECTION 7: FLUE INSTALLATION
7.1 Flue Installation
The flue must terminate outside of the building.
Flues and air intakes must be a fu lly sealed system
and correctly sized for the model. Flues should be
assembled as detailed
on Page 14, Figure 5 through
Page 15, Figure 7. 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 14, Figure 5 through
Page 15, Figure 7.
7. 2 T y p e 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 15, Figure 7. The wire mesh be
fitted inside the fresh air adapter on the heater and
must be removed prior to installation.
7. 3 T y p e B
22
Appliance
The flue must terminate outside the building and be
fitted with a low resistance terminal.
See Page 14, Figure 5 through Page 15, Figure 6.
Figure 5: Flue and Roof Detail
WARNING
Carbon Monoxide Hazard
Heaters installed unvented must be interlocked
with sufficient building exhaust.
Heaters must be installed according to the
installation manual.
Failure to follow these instructions can result
in death or injury.
WARNING
Fire Hazard
Keep all flammable objects, liquids and
vapours the minimum required clearances to
combustibles away from heater.
Some objects will catch fire or explode when
placed close to heater.
Failure to follow these instructions can result
in death, injury or property damage.
WARNING
Cut/Pinch Hazard
Wear protective gear during installation,
operation and service.
Edges are sharp.
Failure to follow these instructions can result
in injury.
Roof
Flue
Terminal
Metal Sleeve
Masterflash
Soaker Flashing
or Rain Collar.
Flue
25 mm Air Gap to
Combustible Material
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