830CA: Installation, Start–Up, Operating and Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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must be in good condition and be installed in accordance with the vent
manufacturer’s instructions.
To prevent condensation in the furnace and vent system, the following
precautions must be observed:
1. The return-air temperature must be at least 60°F (16°C) db except
for brief periods of time during warm-up from setback at no lower
than 55°F (13°C) db or during initial start-up from a standby
condition.
2. Adjust the gas input rate per the installation instructions. Low gas
input rate causes low vent gas temperatures, causing condensation
and corrosion in the furnace and/or venting system.
3. Adjust the air temperature rise to the midpoint of the rise range or
slightly above. Low air temperature rise can cause low vent gas
temperature and potential for condensation problems.
4. Set the thermostat heat anticipator or cycle rate to reduce short
cycling.
Air for combustion must not be contaminated by halogen compounds
which include chlorides, fluorides, bromides, and iodides. These
compounds are found in many common home products such as
detergent, paint, glue, aerosol spray, bleach, cleaning solvent, salt, and
air freshener, and can cause corrosion of furnaces and vents. Avoid using
such products in the combustion-air supply. Furnace use during
construction of the building could cause the furnace to be exposed to
halogen compounds, causing premature failure of the furnace or venting
system due to corrosion.
Vent dampers on any appliance connected to the common vent can cause
condensation and corrosion in the venting system. Do not use vent
dampers on appliances common vented with this furnace.
ADDITIONAL VENTING REQUIREMENTS
A 4” (101 mm) round vent elbow is supplied with the furnace. A 5-inch
(127 mm) or 6- inch (152 mm) vent connector may be required for some
model furnaces. A field-supplied 4-inch-to-5-inch (101 - 127 mm) or
4-inch-to-6-inch (101 - 152 mm) sheet metal increaser fitting is required
when 5-inch (127 mm) or 6-inch (152 mm) vent connector is used. See
Venting Orientation for approved vent configurations.
NOTE:
Vent connector length for connector sizing starts at furnace vent
elbow. The 4-inch vent elbow is shipped for upflow configuration and
may be rotated for other positions. Remove the 3 screws that secure vent
elbow to furnace, rotate furnace vent elbow to position desired, reinstall
screws. The factory-supplied vent elbow does NOT count as part of the
number of vent connector elbows.
The vent connector can exit the furnace through one of two locations on
the casing.
1. Attach the single wall vent connector to the furnace vent elbow, and
fasten the vent connector to the vent elbow with at least two
field-supplied, corrosion-resistant, sheet metal screws located 180°
apart.
NOTE:
An accessory flue extension is available to extend from the
furnace elbow to outside the furnace casing. See Product Data for
accessory listing. If flue extension is used, fasten the flue extension to
the vent elbow with at least two field-supplied, corrosion-resistant, sheet
metal screws located 180° apart. Fasten the vent connector to the flue
extension with at least two field-supplied, corrosion resistant sheet metal
screws located 180° apart.
2. Vent the furnace with the appropriate connector as shown in
-
.
3. Determine the correct location of the knockout to be removed.
4. Use a hammer and screwdriver to strike a sharp blow between the
tie points and work the slug back and forth until the slug breaks
free.
A180242
Fig. 32 – Chimney Inspection Chart
An accessory Vent Guard Kit is REQUIRED for downflow applications
where the vent exits through the lower portion of the furnace casing. See
and Product Data for accessory listing. Refer to the Vent Guard
Kit Instructions for complete details.
The horizontal portion of the venting system shall slope upwards not less
than 1/4-in. per linear ft. (21 mm/M) from the furnace to the vent and
shall be rigidly supported every 5 ft. (2 M) or less with metal hangers or
straps to ensure there is no movement after installation.
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and wear
appropriate protective clothing, safety glasses and gloves when
handling parts and servicing furnaces.
CAUTION
!
BURN HAZARD
Failure to follow this caution may cause personal injury.
Hot vent pipe is within reach of small children when installed in
downflow position. See the following instruction.
CHIMNEY INSPECTION CHART
For additional requirements refer to the National Fuel Gas Code NFPA 54/ANSI Z223.1 and ANSI/NFPA 211
Chimneys, Fireplaces, Vents, and Solid Fuel Burning Appliances
Consult
venting instructions for
application
suitability
Is chimney
lined with properly
sized, listed liner or
Type-B vent?
Is chimney
to be dedicated to
a single
furnace?
Chimney
exposed to
outdoors below
roof line?
Repair
liner or top seal
or reline chimney as
necessary.
Mortar
or tile
debris?
Clay
tile misalignment,
missing sections,
gaps?
Debris
in cleanout?
Mortar, tile, metal vent,
fuel oil residue?
Is
liner and top
seal in good
condition?
Is chimney
property lined with
clay tile liner?
Crown
condition:
Missing mortar
or brick?
Rebuild
crown.
Yes
Yes
No
No
No
Reline
Yes
Repair
Yes
Yes
Yes
No
No
Remove mortar
and tile debris
Remove metal vent
or liner.
No
No
No
No
Yes
Yes
Suitable
Suitable
Not Suitable
Line chimney with property
sized, listed flexible metal
liner or Type-B vent per
NFGC Vent
Sizing Tables and liner or
vent manufacturer’s
Installation instructions.
Instal
instructions.
Chimney is
acceptable for use.
Consult
venting instructions for
application
suitability.
Yes
Not Suitable
Condensate
drainage at bottom
of chimney?
Yes
No
