Barometric Damper - Watts AERCO CFR 3000 Installation And Start-Up Manual

SECTION 2: INSTALLATION

Barometric Damper

Vent Increaser
Vent Stater Section
Figure 2-13: Vent Starter Section, Vent
Figure 2-14: Installation Caution Label
Increaser, Barometric Damper
The supplied stack guard sensor must be field installed on the vent starter section. The sensor comes with
a molex connector that must be connected to the mating wiring harness from the rear of the boiler.
Observe the CAUTION LABEL on the exhaust manifold. Remove this label from the exhaust manifold
before installation of the vent starter.
2.11.2 Barometric Damper
To ensure the proper pressure range is maintained, the CFR boiler requires a
barometric damper to be installed immediately after the factory supplied starter
piece (see Figure 2-15). Do not use the appliance vent connection size to
determine the size of barometric damper. Refer to latest edition of NFPA
54/ANSI Z223.1 for sizing Category I venting systems to size the vent. Then use
that same diameter to size a barometric damper that will be installed
immediately after the factory provided starter piece. Refer to the manufacturer's
instruction on barometric damper installation, operation, and maintenance.
Figure 2-15: Stack Guard Sensor
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