106636-02 - 12/19
7
X-2
Installation, Operating & Service Manual
A. Inspect chimney and remove any obstructions
or restric tions. Clean chimney if previously used
for solid or liquid fuel-burning appliances or
fireplaces.
B. Locate blocked vent switch on boiler draft hood.
Verify connections are made.
C.
Install Vent Damper
OPEN THE VENT DAMPER CARTON and remove
Installation Instructions. READ THE INSTALLATION
INSTRUCTIONS THOROUGHLY before proceeding.
Automatic gas control valve supplied on each X-2
boiler provides redundancy referenced in vent
damper Installation Instructions.
CAUTION
Do not use one vent damper to control two
heating appliances.
1. Vent damper must be same size as outlet of
draft hood supplied with boiler (see
Table 1-1). Unpack damper carefully - DO
NOT FORCE IT CLOSED! Forcing damper
may damage motor and void warranty.
Insert pilot vent plug into gate and fold over
tabs.
2. Mount vent damper assembly onto draft hood.
(Refer to Figure 5-1 and to
instructions packed with vent damper for
specific instructions). Do not modify either
draft hood or vent damper.
NOTICE:
Provide adequate clearance for
servicing.
3. Locate vent damper position indicating means
to be visible following installation.
4. Plug factory harness vent damper connector
into damper motor polarized receptacle.
WARNING
Do not alter draft hood or place any obstruction
or non listed damper in breeching or vent
system. Flue gas spillage and carbon monoxide
production can occur.
D. Install vent system in accordance with "Venting of
Appliances" of the
National Fuel Gas Code,
ANSI
Z223.1/NFPA 54, or applicable provisions of local
building codes.
The X-2 Series boiler is a Category I, draft hood
equipped appliance.
!
1. Type B or Type L gas vent. Install in
accordance with listing and manufacturer's
instructions.
2. Masonry or metal chimney. Build and install
in accordance with local building codes;
or local authority having jurisdiction; or
Standard for Chimneys, Fireplaces, Vents,
and Solid Fuel Burning Appliances,
ANSI/
NFPA 211.
Masonry chimney must be lined with listed
clay flue lining or listed chimney lining
system.
3. Single wall metal vent. Allowed by ANSI
Z223.1/NFPA 54 under very restrictive
conditions.
4. Do not use CPVC, PVC, Polypropylene or
any other non-metallic vent pipe. Do not
use cellular core PVC (ASTM F891), cellular
core CPVC, or Radel
®
(polyphenolsulfone).
5. Do not cover non-metallic vent pipe and
fittings with thermal insulation.
!
5
Venting
Figure 5-1: Vent Damper Installation
