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29
NOTE: While a drain connection is required in the
v
ent of all XFyre installations, the drain can be ac-
complished in several different ways. The figures in
this manual show the drain in a vent tee, however,
this can also be accomplished using an inline collec-
t
or for condensing stacks or an inline vertical or
horizontal collector available from several of the
l
isted vent manufacturers.
CAUTION: This venting system requires the
installation of a condensate drain in the vent piping
per the vent manufacturer’s instructions. Failure to
install a condensate drain in the venting system will
void all warranties on this boiler.
Installation
These installations utilize the heater-mounted blower
to draw combustion air and to vent the combustion
products to the outdoors. The combustion air intake
and the vent are installed horizontally through the wall
to the outdoors. Adequate ventilation air must be sup-
plied to the equipment room in accordance with the
NFGC (U.S.) or B149 (Canada).
The total length of the horizontal through-the-wall
direct vent system should not exceed 200 equivalent ft
in length. If combined vent/intake run exceeds 200
WARNING: No substitutions of flue pipe or vent
cap material are allowed. Such substitutions would
jeopardize the safety and health of inhabitants.
equivalent ft, an appropriately sized variable-speed
extractor must be used. Each elbow used is equal to
10 ft of straight pipe with a maximum of 4 elbows each
on the air intake and vent.
The vent and air intake runs should be balanced to
provide approximately the same equivalent length.
The vent cap and air intake elbow are not considered
in the overall length of the venting system.
The vent must be installed to prevent flue gas leakage.
Care must be taken during assembly to ensure that all
joints are sealed properly and are airtight. The vent
must be installed to prevent the potential accumulation
of condensate in the vent pipes. It is required that:
1. The vent must be installed with condensate drains
as directed by the vent manufacturer.
2. The vent must be installed with a slight upward
slope of not less than 1/4 inch per foot of horizon-
tal run to the vent terminal.
Termination
The vent cap MUST be mounted on the exterior of the
building. The vent cap cannot be installed in a well or
below grade. The vent cap must be installed at least 1
ft above ground level and above normal snow levels.
Only Raypak-approved vent caps may be used. The
vent terminal must be located NO CLOSER than 12”
off the wall.
Model No.
Size
(in.)
Approved Intakes
Approved Plastic
Terminals
Approved SS Terminals
300
4
PVC 90° Elbow,
Sch 40
Galvanized 90°
Elbow SS 90°
Elbow
4" PVC Tee, Sch
40*
FasNSeal FSTT4, Z-Vent 2SVSTTF04
500
850 6
6" PVC Tee, Sch
40*
FasNSeal FSTT6, Heat Fab 9690TEE
Table N: Horizontal Vent and Air Intake Terminals
*Must be ULC-S636 materials in Canada.