Installation, Operation and Maintenance Instructions User guide
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
The MagnaTherm can be common vented, however,
the common venting must be a professionally
designed and approved system. MagnaTherm
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 2500 Model 3000 Model 3500 Model 4000
Screen for horizontal galvanized air pipe D2012101 D2012101 D2012102 D2012103 D2012103
Screen for horizontal PVC air pipe CA012001 CA012001 CA012002 CA012003 CA012003
Screen for horizontal polypropylene air pipe CA012201 CA012201 CA012202 CA012203 CA012203
Screen for vertical galvanized air pipe D2012201 D2012201 D2012202 D2012203 D2012203
Screen for vertical PVC air pipe CA012401 CA012401 CA012402 CA012403 CA012403
Screen for vertical polypropylene air pipe CA012601 CA012601 CA012602 CA012603 CA012603
Table 3a - Ducted Air Accessories
(Place in section 3.2)
Model 2000 Model 2500 Model 3000 Model 3500 Model 4000
Horizontal vent terminal for stainless steel D2012001 D2012001 D2012002 D2012003 D2012003
Screen for horizontal CPVC vent CA012101 CA012101 CA012102 CA012103 CA012103
Screen for vertical stainless steel vent D2012301 D2012301 D2012302 D2012303 D2012303
Screen for vertical CPVC vent CA012501 CA012501 CA012502 CA012503 CA012503
Table 3* - Vent Accessories
(Place in section 3.5)
Model 2000 Model 2500 Model 3000 Model 3500 Model 4000
Air intake screen for unit placed outdoors CA011901 CA011901 CA011902 CA0011903 CA0011903
Vent terminal for unit placed outdoors CA011801 CA011801 CA011802 CA011803 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 certied 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 ue 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