Chimney & Vent Pipe Connections - RBI SERIES 8800 Installation & Operation 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 3A and 3B lists
the equivalent breeching and flue sizes required for the
boiler/water heater.
Table 3A - Equivalent Breeching & Chimney Size
Model Size
in
Size
10
420
10
530
630 12
14
735
14
840
14
950
16
1050
16
1160
16
1260
18
1370
18
1470
Note: These sizes are based on a 20 ft, 6.1m chimney height.
Table 3B - Equivalent Breeching & Chimney Size Dual Flue
Model Size
in
Size
10
840
10
950
12
1050
12
1160
12
1260
14
1370
14
1470
14
1580
14
1685
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
in
mm Size
18
254 1580
254 18
1685
305 1790 20
20
356 1900
22
356 2000
356 24
2400
26
406 2800
28
406 3200
406 30
3600
30
457 4000
457
Model
mm in
Size
16
254 1790
16
254 1900
305 14
2000
16
305 2400
18
305 2800
355 20
3200
22
355 3600
22
355 4000
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.
Size
WARNING: Never modify or alter any part of the
mm
boiler's draft diverter. This includes the removal
457
or alteration of any baffles. Never install a vent
457
pipe of a diameter different than that of the
508
boiler draft hood flue collar. Failure to comply
508
with this warning can result in severe personal
559
injury or death.
610
660
Always provide a minimum clearance of 6 in, 152 mm
711
between type C vent pipe and any combustible
762
materials. Type B1 vent may be used, clearance
762
between it and any combustible material must be as
listed.
WARNING: Failure to maintain minimum
clearances between vent connectors and any
Size
combustible material can result in a fire causing
mm
extensive property damage, severe personal
406
injury or death!
406
356
To determine the appropriate power venter for the boiler/
406
water heater, see Table 4, Power Venter Sizes. Follow
457
the power venter manufacturer's installation instructions.
508
559
Table 4 - Power Venter Sizes
559
8900
Model
420-530
630
735-1160
1260-1900
Models 2000-4000 - Consult Tjernlund
Power Venter Max. Pipe Length
Size FT
100
HS-2
100
HS-3
100
HS-4
100
HS-5
m
31
31
31
31