Lochinvar KNIGHT 51 - Manual (Page 18)

18
Installation & Operation Manual
3
General venting
Sealing of Type “B” double-wall vent material or galvanized
vent pipe material used for air inlet piping on a sidewall or
vertical rooftop Combustion Air Supply System:
a. Seal all joints and seams of the air inlet pipe using either
Aluminum Foil Duct Tape meeting UL Standard 723 or
181A-P or a high quality UL Listed silicone sealant such as
those manufactured by Dow Corning or General Electric.
b. Do not install seams of vent pipe on the bottom of
horizontal runs.
c. Secure all joints with a minimum of three sheet metal
screws or pop rivets. Apply Aluminum Foil Duct Tape or
silicone sealant to all screws or rivets installed in the vent
pipe.
d. Ensure that the air inlet pipes are properly supported.
The PVC, CPVC, or ABS air inlet pipe should be cleaned and
sealed with the pipe manufacturer’s recommended solvents
and standard commercial pipe cement for the material used.
The PVC, CPVC, ABS, Dryer Vent or Flex Duct air inlet pipe
should use a silicone sealant to ensure a proper seal at the
appliance connection and the air inlet cap connection. Dryer
vent or flex duct should use a screw type clamp to seal the vent
to the appliance air inlet and the air inlet cap. Proper sealing
of the air inlet pipe ensures that combustion air will be free of
contaminants and supplied in proper volume.
When a sidewall or vertical rooftop combustion air supply
system is disconnected for any reason, the air inlet pipe must
be resealed to ensure that combustion air will be free of
contaminants and supplied in proper volume.
ƽ DANGER
Failure to properly seal all joints and seams
as required in the air inlet piping may
result in flue gas recirculation, spillage of
flue products and carbon monoxide
emissions causing severe personal injury
or death.
Stainless steel vent
This product has been approved for use with stainless steel
using the manufacturers listed in Table 3A.
Use only the materials, vent systems, and
terminations listed in Table 3B. DO NOT
mix vent systems of different types or
manufacturers, unless listed in this manual.
Failure to comply could result in severe
personal injury, death, or substantial
property damage.
ƽ WARNING
Installations must comply with applicable
national, state, and local codes. Stainless
steel vent systems must be listed as a
UL-1738 approved system for the United
States and a ULC-S636 approved system for
Canada.
NOTICE
Installation of a stainless steel vent system
should adhere to the stainless steel vent
manufacturer’s installation instructions
supplied with the vent system.
NOTICE
The installer must use a specific vent starter
adapter at the flue collar connection,
supplied by the vent manufacturer to adapt
to its vent system. See Table 3B for approved
vent adapters. Discard CPVC starter piece.
NOTICE
Table 3B Approved Stainless Steel Terminations and Adapters
Model
ProTech Heat Fab Z Flex
FasNSeal Saf-T Vent Z-Vent
**Boiler
Adapter
Flue
Termination
Intake
Air
Termination
**Boiler
Adapter
Intermediate
Adapter
Flue
Termination
Intake
Air
Termination
**Boiler
Adapter
Flue
Termination
Intake Air
Termination
51 - 211
300716
(Vent)
300715
(Intake Air)
FSBS3
FSRC3(R.C)
303889
WB50210
(Vent)
KB80210
(Intake Air)
9353BUREZ-1*
9392
5300CI
9314TERM
2SVSLPVC3
(Vent)
2SVSLA03
(Intake Air)
2SVSTP03
2SVSRCX03 2SVSTEX0390
* = This adapter must be used in addition to the boiler adapter for Saf-T vent pipe as shown in FIG. 3-10, unless approved vent
other than standard diameter is used. Consult a Heat Fab representative for questions.
**The stainless steel venting option is only available in 3" vent diameters.
ƽ WARNING Using vent or air intake materials other
than those specified, failure to properly
seal all seams and joints or failure to follow
vent pipe manufacturer’s instructions can
result in personal injury, death or property
damage. Mixing of venting materials will
void the warranty and certification of the
appliance.
NOTICE
The use of double-wall vent or insulated
material for the combustion air inlet pipe
is recommended in cold climates to
prevent the condensation of airborne
moisture in the incoming combustion air.