LAARS Heating Systems
Page 10
If the system temperatures are unknown at the
time of installation, class IIC or higher venting
material is recommended.
The MagnaTherm is a category iV appliance and
may be installed with the standards listed on Table 6.
The unit’s vent can terminate through the roof, or
through an outside wall.
All installations must be done following the vent
supplier’s recommended installation techniques.
if these are not available, refer to the Laars
recommendations for the material used.
For category iV boilers, have horizontal runs
sloping upwards not less than 1/4 inch per foot
(21 mm/m) from the boiler to the vent terminal;
be installed so as to prevent accumulation of
condensate; and, where necessary, have means
provided for drainage of condensate.
Pour la catégorie iV, les chaudières ont horizontal
en pente vers le haut au moins 1/4 de pouce par pied
(21 mm/m) à partir de la chaudière pour l’évent
borne; être installé de façon à éviter l’accumulation
de condensats; et, le cas échéant, ont des moyens
prévus pour l’évacuation des condensats.
This will allow the condensate to run back to the
MagnaTherm to drain. Route the vent pipe to the
heater as directly as possible. Seal all joints. Provide
adequate hangers as required in the venting system
manufacturer’s installation instructions, or at least
every 4 feet.
The unit must not support the weight of the vent
pipe. The maximum equivalent pipe length allowed
is 100 feet (30m). Each elbow is considered to be
5 feet (1.5m). Laars offers accessories to use with
horizontal and vertical exhaust vent systems, as
shown in Table 5
3.2.1
Common Venting
common venting is explicitly not allowed without
the addition of an external vent extraction fan,
professionally engineered and approved by the local
jurisdiction. MagnTherm units are never permitted
to share a vent with any catagory 1 appliances.
3.2.3
Venting requirements Unique to
Canada
MagnaTherm boilers and water heaters are Vent
table 5. Vent accessories
(Place in section 3.1)
Model 2000
Model 3000
Model 4000
Screen for horizontal galvanized air pipe
D2012101
D2012102
D2012103
Screen for horizontal PVC air pipe
CA012001
CA012002
CA012003
Screen for horizontal polypropylene air pipe
CA012201
CA012202
CA012203
Screen for vertical galvanized air pipe
D2012201
D2012202
D2012203
Screen for vertical PVC air pipe
CA012401
CA012402
CA012403
Screen for vertical polypropylene air pipe
CA012601
CA012602
CA012603
Table 3a - Ducted Air Accessories
(Place in section 3.2)
Model 2000
Model 3000
Model 4000
Horizontal vent terminal for stainless steel
D2012001
D2012002
D2012003
Screen for horizontal CPVC vent
CA012101
CA012102
CA012103
Screen for vertical stainless steel vent
D2012301
D2012302
D2012303
Screen for vertical CPVC vent
CA012501
CA012502
CA012503
Table 3* - Vent Accessories
(Place in section 3.5)
Model 2000
Model 3000
Model 4000
Air intake screen for unit placed outdoors
CA011901
CA011902
CA0011903
Vent terminal for unit placed outdoors
CA011801
CA011802
CA011803
Table 3** - Air & Vent Accessories for Units Placed Outdoors
Installation Standards
Material
United States
Canada
Stainless steel
UL 1738
Venting must be ULC S636 certified for use as
venting material. The venting material class must
be chosen based upon the intended application
of the boiler, and must be installed according to
the maximum flue gas temperature and the vent
manufacturer’s instructions.
CPVC, sch 40
ANSI/ASTM F441
Polypropylene
Pending aPProVal
ULC S636 Class 2C
table 6. required exhaust Vent material
