Install Instructions (Venting)

Part number 550-100-103/1110
GAS-FIRED WATER BOILER — Manual addendum — Venting
A–4
Venting & air — general (cont.)
Figure 2 DIRECT VENT APPLICATIONS — Vent and air termination options
DIRECT VENT
SIDEWALL termination
DIRECT VENT
VERTICAL termination
DIRECT VENT
VERTICAL vent and
SIDEWALL air
Weil-McLain
sidewall
termination
plate
(See Boiler
manual
page 18)
3” or 4”PVC
concentric
termination
(See addendum
page A-8)
Vertical
vent
termination
and
Sidewall
air
termination
(See
addendum
page A-15)
3” or 4” PVC
concentric
termination
(See addendum
page A-8)
Vertical
termination with
separate vent
and
air pipes
(See Boiler
manual
page 73)
Sidewall
termination with
separate vent
and
air pipes
(See Boiler
manual
page 66)
Direct vent
installation
sequence
Install the boiler.Step 1
Determine the termination method — sidewall or vertical, concentric or separate pipes, etc.Step 2
Determine proper location for wall or roof penetration for each termination.Step 3
Install termination assembly as described in this manual.Step 4
Install air and vent piping from boiler to termination.Step 5
Install pipe supports and brackets as required.Step 6