Unvented Applications; Unvented Installations; Unvented Installation End Clearances; Figure 36. Unvented Installations - Calcana CAL Series Installation, Operation, Service, And Parts Manual

CAL-SERIES
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UNVENTED APPLICATIONS

UNVENTED INSTALLATIONS: BROODER OR APPROVED INDUSTRIAL APPLICATIONS
WARNING: UNVENTED INSTALLATIONS ARE NOT APPROVED FOR RESIDENTIAL GARAGES. Do not
operate heater in a residential garage application without an approved (exhaust) venting system installed
and connected to the heater. When this heater is installed in a residential garage, the operation of the
heater, when not connected to a properly installed and maintained venting system, can result in carbon
monoxide (CO) poisoning and possible death.
Units may ONLY be installed in unvented installations such as brooder barns or industrial buildings if the
following conditions are met:
1) A 4" (10.2 cm) diameter by 90° elbow must be attached to the flue, vent or exhaust end of heater
and turned down pointing towards the floor. (see Figure 36)
2) The heater must be interlocked with an exhaust fan sized at 4 (four) CFM (114 Liters) for every 1000
Btu/hr input.
3) For BROODER NSTALLATION ONLY, the fan interlock is not required only if the maximum input does
not exceed 30 Btu/hr per cubic foot (28.32 Liters) of volume of air in the building or the input
specified by local codes or authorities.
4) Maintain clearance to combustibles at exhaust (vent) end as noted below.

UNVENTED INSTALLATIONS

UNVENTED INSTALLATION
END CLEARANCES

Figure 36. UNVENTED INSTALLATIONS

UNVENTED

Figure 37. END CLEARANCES UNVENTED INSTALLATIONS

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