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N
EO
T
HERM
Boilers and Water Heaters
Other methods of introducing combustion and ventilation air
are acceptable, providing they conform to the requirements in
the applicable codes listed above.
In Canada, consult local building and safety codes or, in
absence of such requirements, follow CAN/CSA B149.
Ducted Combustion Air
The combustion air can be taken through the wall, or through
the roof. When taken from the wall, it must be taken from
out-of-doors by means of the LAARS horizontal wall
terminal, kit, See Table 6.
See Table 3 to select the appropriate diameter air pipe.
When taken from the roof, a field-supplied rain cap or an
elbow arrangement must be used to prevent entry of rain
water. (See Figure 10)
Use ABS, PVC, CPVC or galvanized pipe for the combustion
air intake. (See Table 4.) The pipe should be sized per Table
2. Route the intake to the boiler as directly as possible. Seal
all joints. Provide adequate hangers. The unit must not support
the weight of the combustion air intake pipe. Maximum linear
pipe length allowed is shown in Table 3. Subtract 5 allowable
linear ft. (1.5m) for every elbow used.
The connection for the intake air pipe is at the top of the unit.
In addition to air needed for combustion, air shall also be
supplied for ventilation, including air required for comfort
and proper working conditions for personnel. Refer to the
applicable codes.
3.3 Venting
The NeoTherm is a Category IV appliance and may be
installed with PVC and CPVC that complies with ANSI/
ASTM D1785 F441, polypropylene that complies with
ULC-S636 Class IIb, or a stainless steel venting system that
complies with UL 1738 Standard. (See Table 5)
The unit’s vent can terminate through the roof, or through an
outside wall.
When using PVC/CPVC for vent material, venting must be
Figure 10.
Combustion Air and Vent Through Roof
INSTALLATION STANDARDS
MATERIAL
UNITED STATES
CANADA
Stainless Steel
UL 1738
Venting must be ULC-S636 certified for use as
PVC, sch 40
ANSI/ASTM D1785
venting material. The venting material class must be
CPVC, sch 40
ANSI/ASTM F441
chosen based upon the maximum flue gas temperature
Polypropylene
ULC-S636
and the intended application of the boiler.
Figure 11.
Required Exhaust Vent Material
*
*
*
*
*
*
*
In Canada, refer to CAN/CSA
B199.1
WARNING
Failure to use polypropylene CPVC or stainless steel
venting for the first 20” (285-600) / 30” (199 / 210)
of vent material or for any part of the venting that is
installed inside a closet may lead to property damage,
personal injury or death. The proper length of this
material is supplied with boiler. Boilers in the U.S. may
use pipe included with the boiler.
Failure to use the appropriate vent material, installation
techniques, glues/sealants could lead to vent failure
causing property damage, personal injury or death.
All venting must be installed according to this manual
and any other applicable local codes, including but
not limited to, ANSI Z223.1/NFPA 54, CSA B149.1,
CSAB149.2 and ULC-S636. Failure to follow this manual
and applicable codes may lead to property damage,
severe injury, or death.
The flue temperature of the NeoTherm changes
dramatically with changes in operating water
temperature. Therefore, it is necessary to assess the
application of the boiler to determine the required
certified vent class. If the NeoTherm is installed in an
application where the ambient temperature is elevated,
and/or installed in a closet/alcove, polypropylene, CPVC
or stainless steel material is required. If the system
temperatures are unknown at the time of installation,
Class IIB or higher venting material is recommended.
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Страница 4: ...LAARS Heating Systems...
Страница 11: ...Page 7 NEOTHERM Boilers and Water Heaters...
Страница 24: ...Page 20 LAARS Heating Systems Figure 16 Hydronic Piping Single Boiler Zoning with Circulators...
Страница 26: ...Page 22 LAARS Heating Systems Figure 18 Hydronic Piping Multiple Boilers Zoning with Circulators...
Страница 84: ...Page 80 LAARS Heating Systems Parts Illustration 1 Jacket Components...
Страница 86: ...Page 82 LAARS Heating Systems Parts Illustration 4 Internal Components Sizes 750 850...
Страница 88: ...Page 84 LAARS Heating Systems Parts Illustration 6 Gas Train Components Sizes 600 850...
Страница 89: ...Page 85 NEOTHERM Boilers and Water Heaters Parts Illustration 7 Heat Exchanger Components 68A Sizes 285...
Страница 90: ...Page 86 LAARS Heating Systems Parts Illustration 8 Electrical Components Front Battery CR2032 Touchscreen Back...
Страница 91: ...Page 87 NEOTHERM Boilers and Water Heaters Notes...