8
V. BeFore iNstalliNg tHe Boiler
FailUre to Follow tHese warNiNgs coUlD
resUlt iN Fire, ProPertY DaMage, PersoNal
iNjUrY, or DeatH.
When vent pipe is exposed to temperatures below
freezing, such as when it passes through an unheated
space or when a chimney is used as a chaseway, vent
pipe must be insulated with 1/2”Armaflex or equivalent.
In extremely cold climate areas, use 3/4”Armaflex or
equivalent.
Combustion air must be clean outdoor air. Combustion air
must not be taken from inside the structure because that
air is frequently contaminated by halogens, which include
fluorides, chlorides, phosphates, bromides and iodides.
These elements are found in aerosols, detergents,
bleaches, cleaning solvents, salts, air fresheners, paints,
adhesives, and other household products.
Locate combustion air inlet as far away as possible
from swimming pool and swimming pool pump house.
All combustion air and vent pipes must be airtight and
watertight. Combustion air and vent piping must also
terminate exactly as shown in
Figures #1 – #2
. If a
concentric vent termination is being used, refer to
Figures
#3 – #5
for proper setup.
Vent connections serving appliances vented by natural
draft shall not be connected into any portion of mechanical
draft systems operating under positive pressure.
Solvent cements are combustible. Keep away from
heat, sparks, or open flame. Use only in well ventilated
areas. Avoid breathing in vapor or allowing contact with
skin or eyes.
coMBustIon aIR/VEnt pIpE REQuIREMEnts
c
ontinued
concEntRIc VEnt RooF InstallatIon
concEntRIc VEnt
Figure #5
Figure #4
WARNING
!
