Installation - Field Controls CAS-34U Manual

INSTALLATION

PLACEMENT OF THE CAS-34U UNIT
The motorized CAS-34U unit should be located in a dry location on a fl at
horizontal surface within the space of the appliance or appliances, and try
to be within 3' of the combustion air intake of the appliance. Two mounting
brackets are provided for securing the unit against a solid structure, such
as a wall, column, or the side of the appliance itself. Use the included
screws to attach the brackets to the CAS-34U housing as shown in Figure
1. Secure the brackets to a solid structure with appropriate fasteners. It is
not required to use the brackets as long as the unit is located so that it may
not be bumped, moved, or tipped over.
*NOTE: The CAS-34U unit can be suspended off the fl oor by utilizing the
brackets to avoid wet or damp fl oors.
INTAKE AIR HOOD LOCATION
The Intake Air Hood should be located on an outside
wall maintaining minimum clearances to other intake and
exhaust vents in accordance with the National Fuel Gas
Code, ANSI Z223.1, manufacturer's recommendations
and/or local codes which are applicable. The intake air
hood should be located at least 10' from a power vented
exhaust outlet.
An exterior air intake should be installed above snow line
or a minimum of 18" above ground level, whichever is
greater. ASHRAE recommends that the air intake be located
at least 10 feet from any source of pollutants such as auto
exhaust, dryer exhaust, exhaust from any fuel-burning ap-
pliance, etc. Avoid installation near odor sources such
as garbage bins or barbecue grills. Do not use a crawl
space, basement or attic as a source of intake air. Always
be sure to comply with local building code requirements
regarding combustion air inlets.
Figure 3: CAS-34U Internal Schematic
page 5 of 16
Figure 4: General Terminal Descriptions
P/N 780107600 Rev B 05/23
Figure 1
Figure 2