Filter
Top Products
Installation & Operation Manual
2 General venting (continued)
Stainless steel air intake/vent
connections
1. Combustion Air Intake Connector (FIG. 2-3) - Used to
provide combustion air directly to the unit from outdoors.
A fitting is provided on the unit for final connection.
Combustion air piping must be supported per guidelines
listed in the National Mechanical Code, Section 305, Table
305.4 or as local codes dictate.
2. Vent Connector (FIG. 2-3) - Used to provide a
passageway for conveying combustion gases to the
outside. A transition fitting is provided on the unit for
final connection. Vent piping must be supported per the
National Building Code, Section 305, Table 305.4 or as
local codes dictate.
REMOVE PVC/CPVC VENT
CONNECTOR WHEN
INSTALLING STAINLESS STEEL
Figure 2-3 Near Boiler Stainless Steel Venting
Stainless steel vent and air piping
This product has been approved for use with stainless steel
FasNseal vent systems manufactured by Dura-vent.
Lochinvar offers a matching stainless steel sidewall vent
termination kit, see Table 3A on page 19.
Use only the materials, vent systems, and
terminations listed in Table 2B. DO NOT
mix vent systems. Failure to comply could
result in severe personal injury, death, or
substantial property damage.
ƽ WARNING
Installations must comply with 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 installation
instructions supplied with the vent system.
NOTICE
The installer must use a specific vent
starter adapter supplied by the vent
manufacturer to adapt to different vent
systems. See Table 2B for approved vent
adapters.
NOTICE
STAINLESS STEEL VENT TERMINATION KITS
Kit Part Number Model Component Description
KIT30028 SB 1000 - 1500
6" PVC x 6" Stainless Steel
Adapter
6" Stainless Steel Vent
Termination
6" Stainless Steel Air Inlet
KIT30029 SB 1300 - 1500
6" PVC x 6" Stainless Steel
Adapter
6" Stainless Steel x 7"
Stainless Steel Adapters (2)
7" Stainless Steel Vent
Termination
7" Stainless Steel Air Inlet
Table 2B Approved Stainless Steel Terminations and
Adapters
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.
The SYNC uses model specific combustion air intake
and vent piping sizes as detailed in Tables 2C and 2D on
page 18.
Increasing or decreasing combustion
air or vent piping to sizes not
specified in this manual is not
authorized.
NOTICE
PVC/CPVC or ABS is acceptable air inlet pipe material.
NOTICE
17