441 01 2314 06
Specifications are subject to change without notice.
10
CARBON MONOXIDE POISONING HAZARD
Failure to follow the steps outlined below for each
appliance connected to the venting system being placed
into operation, could result in carbon monoxide
poisoning or death:
The following steps shall be followed for each appliance
connected to the venting system being placed into
operation, while all 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
National Fuel Gas Code, ANSI
Z223.1/NFPA 54
or
CSA B149.1, Natural Gas and Propane
Installation Code
and these instructions. Determine that
there is no blockage or restriction, leakage, corrosion and
other deficiencies which could cause an unsafe condition.
3.As far as 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.
4.Close fireplace dampers.
5.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 are operating
at maximum speed. Do not operate a summer exhaust fan.
6.Follow the lighting instructions. Place the appliance being
inspected into operation. Adjust the thermostat so
appliance is operating continuously.
7.Test for spillage from draft hood equipped appliances at the
draft hood relief opening after 5 minutes of main burner
operation. Use the flame of a match or candle. (
Figure 4
)
8.If improper venting is observed, during any of the above
tests, the venting system must be corrected in accordance
with the
National Fuel Gas Code, ANSI Z223.1/NFPA 54
and/or
CSA B149.1, Natural Gas and Propane Installation
Code
.
9.After it has been determined that each appliance connected
to the venting system properly vents when tested as out-
lined above, return doors, windows, exhaust fans, fireplace
dampers and any other gas
−
fired burning appliance to their
previous conditions of use.
!
WARNING
Venting to Existing Masonry Chimney
Dedicated venting of one fan assisted furnace into any ma-
sonry chimney is restricted
. A chimney must first be lined with
either Type B vent sized in accordance with NFGC tables 13.1 or
13.2 or a listed metal lining system, sized in accordance with the
NFGC Section 13.1.7 for a single appliance or 13.2.20 for multiple
appliances, or NSCNGPIC Appendix C, Section 10. (See
Masonry
Chimney Venting
of these instructions.)
Listed, corrugated metallic chimney liner systems in masonry
chimneys shall be sized in the U.S. by using
NFGC
tables per
13.1.7 for dedicated venting and per 13.2.20 for common venting
with the maximum capacity reduced by 20% (0.80 X maximum ca-
pacity) and the minimum capacity as shown in the applicable table.
Corrugated metal vent systems installed with bends or offsets re-
quire additional reduction of 5% of the vent capacity for each bend
up to 45
°
and 10% of the vent capacity for each bend from 45
°
up to
90
°
. In Canada, use the
NSCNGPIC
.
NOTE
: Two(2) 45
°
elbows are equivalent to one (1) 90
°
elbow.
Combined Venting into a Masonry Chimney
Venting into a masonry or concrete chimney is only permitted
as outlined in the NFGC or NSCNGPIC
venting tables.
Follow
all safe venting requirements.
Note:
See section “
Masonry Chimney Venting
”.
5. Horizontal Venting
Category
I
Furnaces With External Power
Venters
In order to maintain a Category
I
classification of fan
−
assisted fur-
naces when vented horizontally with sidewall termination, a power
venter is
REQUIRED
to maintain a negative pressure in the vent-
ing system.
In the U.S.
: Per the NFGC, a listed power venter may be used,
when approved by the authority having jurisdiction.
In Canada:
Only power venters approved by the power venter
manufacturer and where allowed by the authority having jurisdic-
tion may be used.
Please consult the Fields Controls Co. or Tjernlund Products, Inc.
for power venters certified for use with this furnaces.
Vent Termination
Venting Through a Non-Combustible and
Combustible Wall
Consult External Power Venter manufacturer instructions.
Select the power venter to match the Btuh input of the furnace be-
ing vented. Follow all of the power venter manufacturer’s installa-
tion requirements included with the power venter for:
•
venting installation,
•
vent terminal location,
•
preventing blockage by snow,
•
protecting building materials from degradation by flue gases,
•
s
ee
Figure 5
for required vent termination.
NOTE:
It is the responsibility of the installer to properly terminate
the vent and provide adequate shielding. This is essential in order
to avoid water/ice damage to building, shrubs and walkways.
