CAS-2B Components(exceptair duct)for the
BeckettAFG burner.The kit includesthe intake
terminal,vacuumreliefvalve(VRV)andspecialairboot
connectionwithintegralairadjustmentmeansfor the
AFG burner.The CAS-2Bcan be used with 4"
galvanisedairductorwith4"flexiblealuminiumairduct.
It isrecommendedthatthemetallicairductingmaterial
shouldbeinsulatedfromtheairintakeupto5 feetfrom
theburnertoavoidcondensationontheoutsideof the
intakepipe.
CAD-1Air duct kit consistsof 25 feet of insulated
UL/ULCListedClass1 airduct,andtwo4" steelband
clamps. The ductincorporatesa corrugatedflexible
aluminiumcore, surroundedby fibreglassinsulation
coveredwithavinylvapourbarrier.
CAUTION
The CAS-2B does not turn the furnace
installation into a direct vent system.
Therefore the building structure must provide
for adequate combustion air to be delivered at
the vacuum relief valve. The burner will
need to draw combustion air from the VRV's
surroundings if the intake ever becomes
blocked. Therefore non-direct vent installation
codes must be followed.
Comprehensive installation instructions are provided
with the kit.
Outdoor combustion air - side-wall venting, DV-
2000 TM:
The new DV-2000 TM venting system is a sealed system
and completely isolates the furnace from the interior of
the building. The burner is totally unaffected by any
pressure fluctuations within the building which makes it
ideal for tight home constructions.
The DV-2000 TM venting system requires additional
parts, which are not included with the kit. These
additional parts must be constructed of 3" Schedule 40
PVC, PVC-SWV, SDR-26,SDR-21, Septic Sewer Pipe,
or ABS plastic pipe, fittings and sealant. Also,
installation procedures, piping and fittings must conform
to the following ANSI/ASTM standards:
PVC
SDR26, SDR21
Septic Sewer Pipe
PVC-DWV
PVC Primer and
Solvent Cement
ABS Pipe and Fittings
ASTM D-1785
ASTM D-2241
ASTM D-2729
ASTM D-2665
ASTM D-2564
ASTM D-2235
Procedure for
Cementing Joints
ASTM D-2855
Additional parts required (not included in VTK kit):
a. 3" elbow fitting as required
b. 3" plastic pipe
c. 3" 90°elbow, female-female(for terminal)
d. 3" female to 2" female reducer (Riello 40-BF burner
only)
e. 2" 90°elbow, street type, female-male (Riello 40-BF
burner only)
f. 3" female-female PVC or ABS coupling (not sewer
pipe) (Beckett AFII burner only)
g. transition bushings to go from PVC or ABS to
ASTM D2729 Septic Sewer Pipe (if applicable).
If PVC fittings are mixed with ABS fittings, use a solvent
cement that is approved for bonding the two plastics.
Intake pipe length - DV-2000TM:
The DV-2000 TMventing system has been certified for
120 equivalent feet of 3" intake pipe. Count a 90°elbow
as 10 equivalent feet and a 45°elbow as 5 equivalent
feet in the calculation.
For Example:
1
2
3
2
1
1
5' Length = 5 equivalent feet
10' Lengths = 20 equivalent feet
90°elbows = 30 equivalent feet
45°elbows = 10 equivalent feet
90°elbow (terminal) = 10 equivalent feet
90°elbow (Riello Burner) = 10 equivalent feet
Total = 85 equivalent feet,
which is less than 120 feet,
which is acceptable.
Intake pipe installation - DV-2000TM:
Obtain the necessary additional parts, to complete the
installation, and start by piping at the burner, tf the
optional vestibule has been installed, remove the
appropriate knockouts in the side panels of the
vestibule. The lower 5" knockout in the right hand panel
is used for the Beckett AFIt burner. The higher 5"
knockouts on the right and left-hand panels are for right
or left connection to the Riello 40-BF burner.
Beckett AFII burner:
Remove the burner intake cover by removing the 3
screws securing it in place. Discard the cover and
screws. Apply silicone liberally around the end of a 3"
coupling and fully insert the silicone end onto the burner
opening. Fasten securely with 3 self-tapping sheet
metal screws.
15
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