Section 9: Outside Air Supply; Figure 24: Filter Housing Assembly; Figure 25: Outside Air Supply - Roberts Gorden CoRayVac CRT-10 Installation, Operation & Service Manual

SECTION 9: OUTSIDE AIR SUPPLY

®
The CORAYVAC system is approved for use with
an outside air system. Halogenated hydrocarbons or
other corrosive chemicals in the air can be drawn
into the equipment and seriously damage the sys-
tem components. Avoid the use of such chemical
compounds near the air inlet to the heaters.
IMPORTANT: If the building has a slight negative
pressure or contaminants are present in the air, an
outside combustion air supply to the heaters is
strongly recommended.

Figure 24: Filter Housing Assembly

Filter Housing
Wing Nut

Figure 25: Outside Air Supply

Vent Cap or
Bird Screen
Outside Wall
Description
Filter Housing
100 mm Take Off
100 mm Air Flex Duct (10 m sections)
100 mm Bird Screen
100 mm Vent Cap
150 mm Vent Cap
Door-Control
Housing
Filter
Top Gasket
and Disk
Filter
100 mm
Housing
Air Flex Duct
100 mm
Take Off
Part Number
01326801
C1361B
C1376B
01365400
90502300
90502302
All joints and seams in the air supply system must
be airtight. The filter housing attaches to the burner
assembly by using the wing nut provided. Single
wall pipe duct may be attached to the burner and
end vent.
Duct Design Rules:
- 150 mm (6") diameter duct must not exceed
27 m (90') maximum 30 flow units.
- 100 mm (4") diameter ductmust not exceed
27 m (90') maximum 12 flow units.
- Elbows are equivalent to 3 m (10') of duct
length.
Filter
Support
Bottom Gasket
Description
Filter Housing
Filter and Gaskets
Filter Support
Wing Nut
Burner
Clamp
Spiral Duct
or PVC
SECTION 9: O A S
UTSIDE IR
Part Number
01326801
01312401
91905500
92511601
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