Pre-Installation Vent System Inspection; Removal Of Existing Furnace From Common Venting System; Metal Vent Installations; Masonry Chimney Installations - Bryant 349HAV Series Installation, Start-Up, And Operating Instructions Manual

6. All runs of pipe should be as short as possible with as few
turns as possible.
7. Seams should be tightly joined and checked for leaks.
8. The flue pipe must not extend into chimney but be flush
with inside wall.
9. The chimney or vent pipe must extend at least 3 ft above the
highest point where it passes through a roof of a building
and at least 2 ft higher than any portion of a building within
a horizontal distance of 10 ft. It shall also extend at least 5
ft. above highest connected equipment flue collar.
NOTE: The NFGC venting tables MUST be used; DO NOT use
BDP's Single-Stage Vent Tables for Category I Fan-Assisted
Furnaces, as they are based on different input ratings.
II. PRE-INSTALLATION VENT SYSTEM INSPECTION
Before furnace is installed, it is highly recommended that any
existing vent system be completely inspected.
For a chimney or Type B vent, this should include the following:
1. Inspection for any deterioration in chimney or Type B vent.
If deterioration is discovered, the chimney must be repaired
or Type B vent must be replaced.
2. Inspection to ascertain that vent system is clear and free of
obstructions. Any blockage must be cleared before install-
ing furnace.
3. Cleaning chimney or Type B vent if previously used for
venting a solid fuel burning appliance or fireplace.
4. Confirming that all unused chimney or Type B vent
connections are properly sealed.
5. Verification that chimney is properly lined and sized per
applicable codes.
III. REMOVAL OF EXISTING FURNACES FROM
COMMON VENT SYSTEMS
If furnace being replaced was connected to a common vent system
with other appliances, the following steps shall be followed with
each appliance connected to the venting system placed in opera-
tion, while any other appliances connected to the venting system
are not in operation:
1. Seal any unused openings in the venting system.
2. Inspect the venting system for proper size and horizontal
pitch as required in the NFGC or the CAN/CGA B149
Installation Codes and these instructions. Determine that
there is no blockage or restriction, leakage, corrosion, and
other deficiencies which could cause an unsafe condition.
3. In so far as is practical, close all building doors and
windows and all doors between the space in which the
appliance(s) connected to the venting system are located
and other spaces of the building. Turn on clothes dryers and
any appliance not connected to the venting system. Turn on
any exhaust fans, such as range hoods and bathroom
exhausts, so they shall operate at maximum speed. Do not
operate a summer exhaust fan. Close fireplace dampers.
4. Follow the lighting instructions. Place the appliance being
inspected in operation. Adjust thermostat so appliance shall
operate continuously.
5. Test for draft hood equipped appliance spillage at the draft
hood relief opening after 5 minutes of main burner opera-
tion. Use the flame of a match or candle.
6. After it has been determined that each appliance connected
to the venting system properly vents when tested as outlined
above, return doors, windows, exhaust fans, fireplace damp-
ers, and any other gas-burning appliance to their previous
conditions of use.
7. If improper venting is observed during any of above tests,
the venting system must be corrected.
Vent system or vent connectors may need to be resized. For any
other appliances when resizing vent systems or vent connectors,
system or connector must be sized to approach minimum size as
determined using appropriate table found in the NFGC or NSC-
NGPIC.
IV. METAL VENT INSTALLATIONS
The furnace is approved for use with Type B vent that terminates
through the roof. Refer to the NFGC Venting Tables supplied with
furnace for proper sizing and setup of this furnace with Type B
vent for a dedicated vent system or a common vented system.
V. MASONRY CHIMNEY INSTALLATIONS
This furnace can be common vented into an existing tile lined
masonry chimney provided:
1. The chimney is currently serving at least 1 drafthood
equipped appliance.
2. The vent connectors and chimney are sized in accordance
with the NFGC Venting Tables supplied with furnace.
This furnace must not be vented ALONE into an existing masonry
chimney (either tile lined or unlined) unless the chimney is also
lined with either a Type B vent system or a listed single-wall metal
lining system (as specified in the NFGC Venting Tables). Both of
these systems must be sized in accordance with the NFGC Venting
Tables supplied with furnace.
Before venting this furnace into a chimney, check chimney for
deterioration and repair if necessary.
This furnace must not be vented into a chimney serving a separate
appliance designed to burn solid fuel.
Type B vent connector must be used on all installations. It must be
sized per the NFGC Venting Tables supplied with furnace.
VI. MULTISTORY INSTALLATIONS
For multistory installations, refer to Appendix G of the NFGC or
Canadian Standard CAN/CGA-B149. Additional vent connectors
should be sized per the enclosed instructions.
VII. SIDEWALL VENTING INSTALLATIONS
A. General
This furnace is A.G.A. and C.G.A. designed certified for sidewall
venting through an outside wall by use of the following auxiliary
draft inducer:
Field Controls Company Model No. DGF-2 sidewall vent-
ing kit.
Follow Installation Instructions supplied with DGF-2 kit.
The minimum vent length is 5 ft and the maximum is 60 ft.
B. Location Requirements for Sidewall Venting
Locate vent terminal adhering to the following minimum clear-
ances:
1. Vent terminal must be located at least 1 ft above the grade
or at least 1 ft above normal expected snowfall.
2. Avoid installing vent terminal above public walkways. If
this is not possible, install terminal at least 7 ft above
walkway.
3. Vent terminal should be at least 4 ft to the side of and at
least 1 ft above doors and windows.
4. Vent terminal should be at least 3 ft above any forced air
inlet located within 10 ft.
5. Vent terminal should be located at least 6 ft from the
combustion-air intake of another appliance.
6. Vent terminal should be located at least 4 ft above any
electric or gas meters, regulators, and relief equipment.
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