Exhaust Vent And Air Intake Pipe Installation; Exhaust Tapping For Vent Sample - PEERLESS Pinnacle PI-399 Installation And Operation Manual

VENTING, INTAKE AIR AND CONDENSATE
d. Effort should be made to keep a minimum
difference in equivalent length between the air
intake pipe and the exhaust vent.
3. The minimum combined equivalent length is 16
equivalent feet.
4. The maximum combined equivalent length can be
extended by increasing the diameter of the vent pipe.
However, the transitions to a larger size should begin
15 equivalent feet from the boiler.
a. Transitions should always be made in vertical
sections of pipe to prevent the condensate from
pooling in the vent pipe.
b. Use a 4" x 6" reducing coupling to transition from
the PI-399 boiler connections to 6" vent.
c. The maximum equivalent length for the
increased diameter vent pipes is 125 feet.
d. If the transition occurs at a distance greater than
15 equivalent feet from the boiler, the maximum
equivalent length will be reduced. See Table 5.2.
Table 5.2: Maximum Equivalent Vent Length for
Oversized Vent Pipe
Transition
TEL of
Point
Standard 4"
(ft from
Vent Pipe (ft)
boiler)
15 30
20 40
25 50
30 60
35 70
40 80
None 85
TEL = Total Equivalent Length
E. EXHAUST VENT AND AIR INTAKE PIPE
INSTALLATION
1. On the PI-399 the 4" exhaust vent connection is
located on the rear of the boiler and the air intake is
higher and toward the left side when the boiler is
viewed from the front. See Figure 10.1. The air
intake connection is intended for a slip fit. No sealant
or adhesive is required.
2. Use only solid PVC, CPVC, or ABS schedule 40 or
80 pipe. FOAM CORE PIPING IS NOT APPROVED.
20
TEL of
Maximum
Oversized 6" TEL of all
Vent Pipe (ft)
Vent Pipe (ft)
95 125
77-1/2 117-1/2
60-1/2 110-1/2
43 103
26 96
8-1/2 88-1/2
0 85
3. Remove all burrs and debris from joints and fittings.
4. All joints must be properly cleaned, primed, and
cemented. Use only cement and primer approved for
use with the pipe material. Cement must conform to
ASTM D2564 for PVC or CPVC pipe and ASTM
D2235 for ABS pipe.
WARNING
All joints of positive pressure vent systems must be
sealed completely to prevent leakage of flue products
into the living space.
5. Horizontal lengths of exhaust vent must slope back
towards the boiler not less than ¼" per foot to allow
condensate to drain from the vent pipe. If the vent
pipe must be piped around an obstacle that causes a
low point in the pipe, a drain pipe must be
connected to allow condensate to drain.
6. All piping must be fully supported. Use pipe hangers
at a minimum of 4 foot intervals to prevent sagging
of the pipe where condensate may form.
7. Do not use the boiler to support any piping.
8. A screened straight coupling is provided with the
boiler for use as an outside exhaust termination.
9. A screened intake air tee is provided with the boiler
to be used as an outside intake termination.
10. An optional stainless steel intake air/exhaust vent
termination (91401) is available from your PB Heat,
LLC distributor for use with Pinnacle Boilers.
11. Refer to Figure 5.3 to 5.5 for sidewall venting and
Figure 5.6 for vertical venting. Refer to Figure 5.7 for
sidewall venting below grade.
F.

EXHAUST TAPPING FOR VENT SAMPLE

To obtain a combustion sample a hole must be drilled in
the exhaust vent pipe just above the first elbow at the
outlet of the boiler.
a. Drill a 21/64" diameter hole in the vent pipe just
above the first elbow.
b. Tap the hole with a 1/8" NPT Pipe Tap.
c. Take combustion samples through the tapped
hole.
d. Thread a standard 1/8" NPT Pipe Plug into the
hole.