IBC Technologies VFC 160 Installation And Operating Instructions Manual - page 7
IBC Technologies Inc.
- 7 -
VFC 160
provide space for splicing in an optional
2” compatible air filter unit.
The junction between the initial 2" vent
section (e.g. 10' of CPVC ), the vent line
diameter is increased through use of a
3”- 2” (or 2.5" x 2") reducer. It shall be
placed in a vertical section of the flue
gas vent to avoid pooling of condensate.
Exhaust venting must slope back to the
trap/drain with a pitch of at least ¼” per
foot so condensate runs towards the trap.
Support should be provided every 2 to 3
feet for each of the intake and vent
piping. Insulate exhaust piping where it
passes through unheated space with
appropriate pipe insulation to prevent
freezing of condensates.
Ensure all venting components are clean
of burrs/debris prior to assembly.
Particular care is to be taken to avoid
ingestion into the fan of CPVC/ABS
debris left in the combustion air piping.
All joints must be secured using CPVC,
ABS or ABS/PVC solvent cement to
bond the respective pipe material. Use
solvent cement on the connector located
at the CPVC/ABS junction (e.g. 10’
along the exhaust piping). Follow the
cement manufacturer’s instructions
closely when joining various
components.
All vent connections must be liquid and
pressure tight. Test exhaust venting
connections, under fan pressure with
vent blocked, using a soap/water
solution prior to firing.
1.4.1.3 Condensate Trap
A condensate trap must be installed at
the base of the boiler (or within 12” of
the first 90° exhaust line elbow), as
shown in Figures 2. (e.g. spliced into
the 2” CPVC exhaust vent using a
straight 2" tee or a 2” x ½” x 2” reducing
tee). The trap itself is formed using ½”
CPVC pipe for the drop leg, with ½”
PVC pipe, elbows and threaded union
fittings. The trap must be installed as
follows:
• Have 5” minimum neck depth
• Piped to within 3” of a drain or be
connected to a condensate pump
• Drainage line must slope down to the
drain at a pitch of ¼” per foot so
condensate runs towards the trap
• IMPORTANT! Fill trap with
water before boiler is first fired to
prevent exhaust fumes from
entering room. Never operate the
boiler unless the trap is filled with
water.
• Trap should be checked every 6
months. Clean and refill as
necessary.
5 " m in .
¼ " v e r t ic a l p e r
h o r iz o n t a l f o o t
f il l w it h w a t e r
( C P V C D r o p l e g )
t o d r a in o r c o n d e n s a t e t r a p
Figure 2 -Condensation Trap Alternatives