16
Series 49
Installation, Operating & Service Instructions
111368-04 - 1/22
6
Venting
(continued)
A. Vent damper must be same size as outlet
of vent supplied with boiler (see Table 3-2).
Unpack damper carefully - DO NOT FORCE IT
CLOSED! Forcing damper may damage motor
and is not covered by warranty.
Insert pilot vent plug into gate and fold over
tabs.
B. Mount the vent damper assembly onto diverter.
See damper manufacturer instructions for more
information. Do not modify either diverter or
vent damper. See Figure 6-1.
NOTICE:
Provide adequate access for
servicing.
C. Locate vent damper position indicator to be
visible following installation. See Figure 6-2.
D. Plug vent damper connector into damper
motor polarized receptacle.
3. Install Blocked Vent Switch (BVS). See Figure
6-1.
A. Attach BVS to diverter using supplied #6
sheet metal screws.
B. Attach Black/White (BVS) and Black (BVS/
FRS) quick connects to BVS.
Wires are interchangeable.
4. Install vent piping.
A.
See Figure 3-4 for vent sizes and locations.
See Figure 4-2 for clearances.
B.
Install vent piping from vent damper outlet
to chimney. See Figure 6-3 for typical vent
installation.
WARNING
This installation is not complete until rear air
dam is installed. Product performance will be
negatively affected if rear air dam is not installed
which can cause severe personal injury or
death.
!
Figure 6-2: Vent Damper Position Indicator
(shown in open position)
CAUTION
Do not use one vent damper to control more
than one heating appliance.
!
Single Draft Hood System
(49-075S - 49-299S)
1. Install vent damper.
OPEN VENT DAMPER CARTON and remove
Installation Instructions. READ INSTALLATION
INSTRUCTIONS THOROUGHLY before
proceeding.
2. Install rear air dam.
Hang air dam on screws located at back of
boiler. See Figure 6-1 for location.
Figure 6-3: Typical Single Draft Hood Installation
49-075S through 49-299S
Bottom
of Boiler
Air Gap
Front
of Boiler
Cleanout
Thimble
Chimney
Slope Up
