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HEATERHUT WATER HEATER ENCLOSURES
This sheet covers the requirements for installing the Star-Kap™ on a HeaterHut gas water heater
enclosure. The HeaterHut enclosure is designed for the purpose of housing a gas water heater
outside of the living space of a structure. These requirements are based on the A.G.A. test reports
FT-C-6-93 and FT-C-18-93. The HeaterHut water heater enclosure is not sold or manufactured by
the Field Controls Co. These installation instructions only address the installation of the Star-Kap™,
state the maximum capacity water heater allowed in an HeaterHut and the vent termination
clearances from windows or openings into a building structure as tested in the A.G.A. field reports FT-
C-6-93 and FT-C-18-93.
INSTALLATION GUIDE LINES
1. The maximum gas water heater appliance to be operated in a HeaterHut enclosure: up to 65,000
BTU/HR input.
2. Two (2) make up/combustion air openings into the HeaterHut enclosure shall be installed. Each
opening size shall be based on one (1) square inch per 4000 BTU/HR. The vent termination shall
have the following clearance distances.
a. HH4034 Model HeaterHut
14" from combustible exterior wall to center of vent cap
b. HH5065 Model HeaterHut
16" from combustible exterior wall to center of vent cap
c. A minimum of 12" from any window or opening into the main building structure
d. A minimum of 18" below an eave or overhang
STAR-KAP™ INSTALLATION
Install one section of DOUBLE Wall vent pipe on top of water heater vent outlet and extend through
roof of HeaterHut to a height as required by local codes. Then install a storm collar over vent pipe
and push down until it rest of top of HeaterHut roof, caulk around storm collar if desired. Install Star-
Kap™ on top of vent pipe and secure with three self-tapping sheet metal screws. (See Figure 1)
SPECIAL VENTING APPLICATION
INSTALLATION SHEET FOR
Figure 1
P/N 46357800 Rev A 11/00
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