Heat Controller HKV Installation, Operation & Mainenance Manual page 9

Heat Controller, Inc.
•
Include at least one 90-degree turn in supply air
ducts to reduce noise transmission.
•
Existing ducts must be checked to insure proper
size and configuration prior to installation of any
replacement unit. Also inspect for and repair all air
leaks in existing ducts.
•
Units may only be connected to a dedicated duct
system. Consult the factory BEFORE connecting
multiple units to a common duct system.
•
Never connect a unit to a duct system with automatic
or modulating dampers, VAV boxes, etc. in the supply
air system. Never allow a situation where the total
unit CFM can drop below the minimum required for
proper unit operation.
HKV LArge CommerCiAL
•
Never connect a bypass damper from the supply air
duct to the return air duct. Never allow the return air
temperature to drop below the minimum allowable
normal temperature for proper unit operation.
•
Do not use HKV units for 100% outdoor air treatment.
Do not add hot-gas-bypass to "convert" a unit for
outdoor air treatment. Always use a dedicated
outdoor air unit for outdoor air treatment.
•
Do not exceed 10% of the total unit CFM with
untreated outdoor air.
8
IOM Instructions
Installation