Table of Contents
Advertisement
880TB/881TB: Installation, Start–Up, Operating and Service and Maintenance Instructions
WARNING
!
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:
-
Seal any unused openings in venting system.
-
Inspect the venting system for proper size and horizontal pitch,
as required in the National Fuel Gas Code, NFPA 54/ANSI
Z223.1 and these instructions. Determine that there is no
blockage or restriction, leakage, corrosion and other
deficiencies, which could cause an unsafe condition.
-
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.
-
Close fireplace dampers.
-
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.
-
Follow the lighting instructions. Place the appliance being
inspected into operation. Adjust the thermostat so appliance is
operating continuously.
-
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.
-
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, NFPA 54/ANSI Z223.1.
-
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 dampers
and any other gas-fired burning appliance to their previous
conditions of use.
The Chimney Adapter Kit is a listed alternative venting system for these
furnaces. See the kit instructions for complete details.
This furnace is permitted to be vented into a clay tile-lined masonry
chimney that is exposed to the outdoors below the roof line, provided:
1. Vent connector is Type-B double-wall, and
2. This furnace is common vented with at least 1 draft hood equipped
appliance, and
3. The combined appliance input rating is less than the maximum
capacity given in
Table
10, and
4. The input rating of each space heating appliance is greater than the
minimum input rating given in
Design Temperature. Chimneys having internal areas greater than
38 sq. in. (24516 sq. mm) require furnace input ratings greater than
the input ratings of these furnaces. See footnote at bottom of
Table
11, and
5. The authority having jurisdiction approves.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Table 11
for the local 99% Winter
Exterior Masonry Chimney FAN + NAT Installation with Type-B
Double Wall Vent Connectors
Table 10 – Combined Appliance Maximum Input Rating
in Thousands of BTUh per Hour
VENT HEIGHT
FT (M)
12
(7741)
6 (1.8)
74
8 (2.4)
80
10 (3.0)
84
15 (4.5)
NR
20 (6.0)
NR
30 (9.1)
NR
If all of these conditions cannot be met, an alternative venting design
shall be used, such as the listed chimney adapter kit with a furnace listed
for use with the kit, a listed chimney-lining system, or a Type-B common
vent.
Table 11 – Minimum Allowable Input Rating of
Space-Heating Appliance in Thousands of BTUh per Hour
VENT HEIGHT
FT. (M)
(7741)
Local 99% Winter Design Temperature: 17 to 26 degrees F
6
8
10
15
20
30
Local 99% Winter Design Temperature: 5 to 16 degrees F
6
8
10
15
20
30
Local 99% Winter Design Temperature: -10 to 4 degrees F
6
8
10
15
20
30
Local 99% Winter Design Temperature: -11 degrees F or lower
Not recommended for any vent configuration.
*. The 99.6% heating (db) temperatures found in the 1997 or 2001 ASHRAE
Fundamentals Handbook, Climatic Design Information chapter,
(United States) and 2A (Canada) or the 2005 ASHRAE Fundamentals
handbook, Climatic Design Information chapter, and the CD-ROM included
with the 2005 ASHRAE Fundamentals Handbook.
Inspections before the sale and at the time of installation will determine
the acceptability of the chimney or the need for repair and/or (re)lining.
Refer to
Fig. 31
to perform a chimney inspection. If the inspection of a
previously used tile-lined chimney:
a. Shows signs of vent gas condensation, the chimney should be
relined in accordance with local codes and the authority having
jurisdiction. The chimney should be relined with a listed metal
22
E
NFPA & AGA
INTERNAL AREA OF CHIMNEY
SQ. IN. (SQ. MM)
19
28
(12258)
(18064)
119
178
130
193
138
207
152
233
NR
250
NR
NR
INTERNAL AREA OF CHIMNEY
SQ. IN. (SQ. MM)
12
19
28
(12258)
18064)
0
55
99
52
74
111
NR
90
125
NR
NR
167
NR
NR
212
NR
NR
NR
NR
78
121
NR
94
135
NR
111
149
NR
NR
193
NR
NR
NR
NR
NR
NR
NR
NR
145
NR
NR
159
NR
NR
175
NR
NR
NR
NR
NR
NR
NR
NR
NR
Table
38
(24516)
257
279
299
334
368
404
38
(24516)
*
141
154
169
212
258
362
*
166
182
198
247
293
377
*
196
213
231
283
333
NR
2A
Advertisement
Table of Contents
