LAARS HP-M2 Series - Installation, Operation and Maintenance Instructions - Manual (Page 8)

Page 8 LAARS Heating Systems
2E. Installing Stainless Steel
Horizontal / Vertical Venting
(non concentric)
Stainless Steel Special Gas Vent listed to U.L.
Standard 1738 and U.L.C. Standard 636 may be used
to vent all H Series H(W)(P) and DH(P) models. Vent
pipe and fittings are manufactured to these Standards
by Heat-Fab, Inc. under the trade name of Saf-T
Vent® and by Z-Flex™ under the trade name of
Z-Vent. Follow the Special Gas Vent manufacturers’
instructions regarding design, location and assembly
of the vent system.
The H Series appliance may be vented with any
number of elbows or fittings provided that the
maximum equivalent feet of venting is not exceeded.
90° elbows in the vent system shall be considered to
be 10 equivalent feet. When vented with Special Gas
Vent, the H Series must not be common vented with
any other appliance.
2F. Connecting Special Gas Vent
to H Series
Teledyne part number 2400-372 (Figure 6) is
used to secure the Special Gas Vent to the flue outlet
of the H Series*. Heat-Fab pipe or fittings (part
numbers 2400-350 or 2400-352) or the male end of
Z-Vent pipe (Z-Vent # 02 SVEPXX030) may be
installed over the flue outlet of the H Series.
*If a duct is used around the Special Gas Vent to
bring in combustion air from another location, the
connection of that duct to the appliance must be
secured with sheetmetal screws.
Each joint between the appliance and the last
joint before the location where the Special Gas vent
exits the duct must also be secured with sheetmetal
screws.
In this application, part number 2400-372 is not
used at the boiler flue collar. It is used, and must be
used, to secure the Special Gas Vent at the point
where the Special Gas Vent exits the duct.
The combustion air supply should be protected
from debris entering the duct. This may be done with a
H Series Vent Terminal, part number 2400-277, as
shown in Figure 7 or with a large mesh screen.
Follow the Special Gas Vent manufacturer’s
instructions for cleaning and sealing all parts before
assembling.
2G. Appliance Joint Procedure
Part #2400-350 (See Figure 8)
Apply 1/4" bead of silicone sealer (GE108 or
Novagard 400) to the 3 inch (3") flue outlet of the H
Series approximately one inch (1") from the end.
Slide flue adapter over the H Series flue outlet
(flared up end) and push down to stop (do not force
adapter beyond stop).
Apply another bead of silicone around this joint
and smooth out.
Apply 1/4" bead of silicone to the straight end of
the 2400-350 pipe approximately 1/4" from the end.
Slide the pipe into the adapter until it bottoms in
the adapter.
Apply another bead of silicone around this joint
and smooth out.
2H. Appliance Joint Procedure
Part #2400-352 or Z-Vent
#02SVEPXX030 (see Figure 8)
Apply 1/4" bead of Silicone sealer (GE 108 or
Novagard 400) to the 3 inch (3") flue outlet of the H
Series approximately one inch (1") from the end.
Slide pipe over the H Series flue outlet and push
down to stop (do not force pipe beyond stop).
Apply another bead of silicone around this joint
and smooth out.
2I. Securing Special Gas Vent
Attach part number 2400-372 to 5" collar on
appliance or end of five inch (5") combustion air duct
and tighten large clamp.
Form tabs on part number 2400-372 onto Special
Gas Vent pipe and secure tabs with the 3" clamp.
After the clamp has been tightened, fold the end
of the tabs down over the clamp.
DO NOT use screws in any portion of the 3"
Special Gas Vent.
For vertical venting see instructions in the
Vertical Vent Kit pertaining to use of raincaps and
condensate drip tee's.
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