Ill mY4 =lb.'Hai I:JI'.,l::i iL__"]aW-'IHIar-"aai[o] K_
1.
2.
3.
r_,qI:il I_I al::liaid".JI:,J_ IIk_[,.-'11ir_,1nar_,'aiI[,] _
4,
For minimum and maximum vent pipe lengths see
Table 1
Use only 3" diameter Heat Fab Saf-T Vent, Z-Flex
Z V_nt, ProTech FasNSeaL or Flex L Star-34 Type
AL2.9-4C stainless steel vent pipe and fittings for
venting of flue gases from the boiler.
Connect vent pipe to boiler by spreading a I/4" bead
of high-temp GE 106 silicone or Silicones Unlimited
$45005 Red around the fan adapter. Attach proper
vent adapter to fan adapter (not applicable, Z-Flex)
Z-Flex vent pipe/fiRing connects directly to fan
adapter, secure to fan adapter using Z-Flex lock band.
See Figure 11.
Attach remaining pipe and fittings per each
manufacturer's vent instructions. Use only the silicone
recommended by vent pipe manufacturers. Maintain
proper clearance to combustible construction - see
Section 1, Preinstallation.
5. a,
b,
Side Wall Venting Only - Horizontal lengths of
the vent pipe shall slope down not less than 1/4"
per foot from the boiler to the vent terminal. If
vent pipe does slope back toward boiler, a
horizontal drain is required as described in 5B and
Figure 10.
Vertical Venting Only - A horizontal drain tee is
required. Slope horizontal lengths ._ not less
than I/4" per foot from the boiler to the vent
terminal. Install drain tee as shown in Figure I0.
Use silicone hose and form a 3" diameter loop
trap with a water seal. Pipe to drain per
local code.
6.
Support horizontal l_,ngths of the vent system to
prevent sagging by use of metal strapping or
equivalent means. Locate supports at not more than
four (4) foot intervals
Vertical Venting Only - If there is no solid anchor
point in the system below the roof for supporting
vertical sections of the vent pipe fie Firestop
Support, etc.), a special vent support system will be
required. See vent manufacturer's instructions for
additional information
1.
2.
3.
4.
5.
6.
7.
For maximum air inlet pipe lengths see Table 2
Use only 4" diameter galvanized pipe or 4" diameter
flexible aluminum vent for supplying combustion air to
boiler inlet air box.
Boiler connection can be from either right or left side
of boiler jacket Determine which jacket side air inlet
piping is to be routed and remove the 4-1/2" jacket
knock out.
Attach a 4" diameter 90 degree elbow to top of air
box and connect air inlet piping.
Support air inlet piping using the same methods and
requirements as shown in the previous section for vent
pipe support.
Seal all connections using silicone.
To prevent condensation from forming on exposed
portions of Wall Thimble and 4" diameter air inlet
piping, wrap exposed aleas with insulation.
Z-FLEX
Z-VENT
MALE
Z-FLEX
Z VENT
LOCKING
BAND
SVSLBXO3
HEAT-FAB
SAF-T VENT
PIPE,
MALE END
HEAT-FAB
_ AF-T VENT
7301AMTK
VENT ADAPTER
PROTECH
FABNSEAL
VENT PIPE
MALE END'
FLEX-L
- STAR-34
VENT PIPE
MALE END'
PROTECH FLEX-L
I FASNSEAL _ STAR-54
FSA-PSC/DE 3 SRAPPA3
VENT ADAPTER VENT ADAPTER
1/4" BEAD 1/4" BEAD 1/4" BEAD !/4" BEAD
LREEB E LPER E B
AOA TEBAOAPTERAOA ' R ABA TER
Figure 1 1: Vent Connection to Boiler
11
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