Weil-McLain 2 Series Manual page 29

®
SlimFit Series 2
Venting/combustion air — options
SlimFit boiler venting and air piping — OPTIONS and PIPING LIMITS — The table below lists the acceptable
vent/air pipe terminations described in this manual.
USE ONLY the pipe materials listed in Figure 22, page 25 | See Figure 96, page 105 for part/kit numbers
Boiler vent and air connections:
Provide a vent pipe mfr's SlimFit VENT/AIR ADAPTER at boiler vent connection and air connection (if used). See
Figure 96, page 105 for part/kit numbers
Provide vent pipe manufacturer's reducer(s) as needed to meet vent/air pipe size used.
SIDEWALL
Direct Exhaust
VENT
See page 33
Max/Min length, feet
Thickness for
wall/roof vent penetration;
Max: 8" Min: 0"
6"
100 max / 6 min
SF1000
8"
DO NOT USE 8"
6"
DO NOT USE 6"
SF1500
8"
100 max / 6 min
6"
DO NOT USE 6"
SF2000
8"
100 max / 6 min
If the TOTAL number of elbows used in the vent and air piping and terminations is more than two elbows in the vent
piping and one elbow in the air piping, REDUCE the maximum lengths above by the following lengths for each additional
elbow (whether 45° or 90°).
Note 1
6-inch vent/air piping — Reduce maximum allowable length by 15 feet for each additional elbow used.
8-inch vent/air piping — Reduce maximum allowable length by 7 feet for each additional elbow used.
NOTE: If the pipe manufacturer's equivalent lengths for elbows is LONGER than the values listed above, use the
pipe manufacturer's value for length reduction per elbow instead.
Boilers will derate as vent/air pipe length increases — see Figure 108, page 116 for derate amount vs piping length.
Note 2 Side air intake/through the roof vent must use Combustion Air Pressure Kit, see Figure 96, page 105 for Kit part number.
Part number 550-100-180/0917
COMMERCIAL CONDENSING GAS
VERTICAL
Direct Exhaust
SF0061de
SF0062de
See page 35
(note 1)
Max/Min length, feet
Thickness for
wall/roof vent penetration;
Max: 8" Min: 0"
100 max / 6 min
DO NOT USE 8"
DO NOT USE 6"
100 max / 6 min
DO NOT USE 6"
100 max / 6 min
REDUCE MAXIMUM VENT/AIR PIPE LENGTHS FOR ELBOWS
- — Boiler Manual
FIRED WATER BOILER
SIDEWALL Direct Vent
(vent and air out sidewall)
VENT
AIR
T
See page 39
(note 1)
Max/Min length, feet
Thickness for
wall/roof vent penetration;
Max: 8" Min: 0"
100 max / 6 min
150 max / 6 min
DO NOT USE 6"
100 max / 6 min
DO NOT USE 6"
100 max / 6 min
VERTICAL Direct Vent
(vertical or sidewall air)
T
o tio
See Note 2.
SF0062
See page 41
(note 1)
Max/Min length, feet
Thickness for
wall/roof vent penetration;
inches Max: 8" Min: 0"
100 max / 6 min
150 max / 6 min
DO NOT USE 6"
100 max / 6 min
DO NOT USE 6"
100 max / 6 min
(note 1)
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