Chimney & Vent Pipe Connections - RBI 8800 series Installation And Operation Instructions Manual

Page 8
CHIMNEY & VENT PIPE
CONNECTIONS
WARNING: The vent installation must be in
accordance with Part 7, Venting of Equipment, of
the National Fuel Gas Code, ANSI Z223.1/NFPA
54-latest revision or applicable provisions of
the local building codes. Canadian installations
must comply with CAN/CGA B149.1 or .2
Installation Code. Improper venting can result in
excessive levels of carbon monoxide which can
result in severe personal injury or death!
Chimney Inspection & Sizing
A thorough inspection of the masonry chimney must be
performed to ensure that the chimney is clean, properly
constructed, lined and sized. Exterior masonry chimneys
should not be used unless properly lined to prevent
condensation and draft problems. Table 3 and 4 lists
the equivalent breeching and flue sizes required for the
boiler/water heater. Uninsulated single-wall vent pipe
shall not be used outdoors for regions where the design
temperature is below 32°F, 0°C.
Table 3 - Equivalent Breeching & Chimney Size
Model Size
Size in
420 10
530 10
630 12
735 14
840 14
950 14
1050 16
16
1160
1260 16
1370 18
1470 18
Note: These sizes are based on a 20 ft, 6.1m chimney height.
Table 4 - Equivalent Breeching & Chimney Size Dual Flue
Model Size
Size in
840 10
10
950
1050 12
1160 12
12
1260
1370 14
1470 14
1580 14
1685 14
Note: Minimum vertical rise off top dual flue units: 3 ft, 1 m (sizes
840-3200), 5 ft, 1.5 m (sizes 3600-4000).
SERIES 8800 & 8900 INSTALLATION AND OPERATING INSTRUCTIONS
Model
mm
Size in
254
1580 18
254
1685 18
305
1790 20
356
1900 20
356
2000 22
356
2400 24
406
2800 26
406
28
3200
406
3600 30
457
4000 30
457
Model
mm
Size in
254
1790 16
254
16
1900
305
2000 14
305
2400 16
305
18
2800
355
3200 20
355
3600 22
355
4000 22
355
When more than one appliance is connected to the
same chimney flue, the flue must be large enough to
safely vent the combined output of all the appliances.
WARNING: If an appliance using any type of a
mechanical draft system operating under
positive pressure is connected to a chimney
flue, never connect any other appliances to this
flue. Doing so can result in the accumulation of
carbon monoxide which can cause severe
personal injury or death!
Vent Connections
Always use a type B or single wall galvanized metal vent
pipe the same diameter as the draft diverter flue collar.
Use the shortest, straightest vent system possible for
the installation. If horizontal runs exceed 6 ft, 1.8 m they
must be supported at 6 ft, 1.8 m intervals with overhead
hangers. The vent system should be sloped up toward
the chimney at a minimum rate of 1/4 in/ft, 20 mm/m
and terminate flush with the inside of the chimney flue.
Fasten each connection with at least 3 corrosion
resistant sheet metal screws.
WARNING: Never modify or alter any part of the
boiler's draft diverter. This includes the removal
Size
or alteration of any baffles. Never install a vent
mm
pipe of a diameter different than that of the
457
boiler draft hood flue collar. Failure to comply
457
with this warning can result in severe personal
508
injury or death.
508
559
Always provide a minimum clearance of 6 in, 152 mm
610
between type C vent pipe and any combustible
660
materials. Type B1 vent may be used, clearance
711
between it and any combustible material must be as
762
listed.
762
WARNING: Failure to maintain minimum
clearances between vent connectors and any
combustible material can result in a fire causing
extensive property damage, severe personal
Size
injury or death!
mm
406
To determine the appropriate power venter for the boiler/
406
water heater, see Table 5, Power Venter Sizes. Follow
356
the power venter manufacturer's installation instructions.
406
457
Table 5 - Power Venter Sizes
508
8900
559
Model
559
420-530
630
735-1160
1260-1900
Models 2000-4000 - Consult Tjernlund
Power Venter Max. Pipe Length
Size FT
HS-2 100
HS-3 100
100
HS-4
HS-5 100
m
31
31
31
31