5
A. GENERAL
1. Install the PUREFIRE Boiler venting system in accordance
with these instructions and with the National Fuel Gas
Code, ANSI Z223.1/NFPA 54, CAN/CGA B149, and/or
applicable provisions of local building codes.
2. The P
UREFIRE Boiler is a direct vent appliance and is
ETL Listed as a Category IV appliance with Intertek
Testing Laboratories, Inc.
B. APPROVED MATERIALS
1. Table 3.1 lists approved materials for vent pipe (and
adhesives where applicable). Use only these materials
for exhaust vent piping.
2. Cellular core piping is approved for inlet air piping only.
Notice: Installations in Canada require compliance
with ULC S636 Standard for Type BH Gas Venting
Systems.
C. EXHAUST VENT/AIR INTAKE PIPE
LOCATION
1. Install vent piping before installing water, fuel, or
condensate piping. Working from largest to smallest
diameter reduces the chances of piping interference.
2. The vent piping for this boiler is approved for zero
clearance to combustible construction.
3. The Peerless P
UREFIRE boiler, like all high efficiency
products, is likely to produce a vapor plume due to
condensation. Surfaces near the vent termination will
likely be coated with condensation.
4. The maximum combined vent and air inlet vent
length for the Peerless P
UREFIRE boiler is 200
equivalent feet (60 m). Be sure that the boiler is
located such that the maximum vent length is not
exceeded.
5. Air Intake Pipe Location – Sidewall Venting:
a. Provide 1 foot (30 cm) clearance from the bottom
of the air intake pipe to the level of maximum
snow accumulation. Snow removal may be
necessary to maintain clearances.
b. Do not locate air intake pipe in a parking area
where machinery may damage the pipe.
c. The maximum distance between the air intake
and exhaust is 6 feet (1.8 m).
d. If the vent pipe and air inlet pipe terminations
penetrate the wall at the same level the minimum
distance between them is 8" center-to-center.
e. For multiple boiler installations the minimum
distance between the inlet of one boiler to the
exhaust of another is 8" center-to-center.
f. See Figure 3.1 for an illustration of vent spacing
for multiple boilers.
VENTING & AIR INLET PIPING
3. VENTING & AIR INLET PIPING
The venting system for this product is to be installed
in strict accordance with these venting instructions.
Failure to install the vent system properly may result
in severe personal injury, death or major property
damage.
WARNING
This vent system operates under positive pressure.
Vent connectors serving appliances vented by
natural draft shall not be connected into any portion
of this venting system. Failure to comply may result
in serious injury, death or major property damage.
WARNING
Only the materials listed below are approved for use
with the
P
URE
F
IRE
Boiler. Use only these components
in accordance with these instructions. Failure to use
the correct material may result in serious injury,
death, or major property damage.
WARNING
Description Material
Conforming to
Standard
Vent Piping & Fittings
PVC (Sch 40 or 80) ANSI/ASTM D1785
CPVC (Sch 40 or 80) ANSI/ASTM D1785
PVC-DWV ANSI/ASTM D2665
MUGROTM PP(s) EN 14471 T120
Pipe Cement
(PVC & CPVC Only)
PVC/CPVC Cement ANSI/ASTM D2564
Table 3.1: Approved Materials for Exhaust Vent
Pipe
Use of cellular core pipe for any exhaust vent
component is prohibited. Use of cellular core pipe
may result in severe personal injury, death, or major
property damage.
WARNING
If the maximum equivalent vent length is exceeded,
the maximum burner input rate may be reduced.
NOTICE
Locating air intake and exhaust pipes on different
sides of a building can cause erratic operation due to
wind gusts. When using the sidewall venting
configuration always locate both terminations on the
same outside wall.
NOTICE
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