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Installation Manual – THH
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Section 2 – Start-Up
AIR SYSTEM BALANCING
All duct work must be complete and connected, and all grilles, filters,
access doors and panels must be properly installed to establish actual
system operating conditions BEFORE beginning air balancing operations.
Each individual unit and attached duct work is a unique system with its
own operating characteristics. For this reason, air balancing is normally
done by balance specialists who are familiar with all procedures required
to properly establish air distribution and fan system operating conditions.
These procedures should not be attempted by unqualified personnel.
After the proper system operation is established, the actual unit air
delivery and the actual fan motor amperage draw for each unit should be
recorded in a convenient place for future reference such as the inspection,
installation, & start-up check sheet, a copy of which is provided on the
back of this manual. Contact the Sales Representative or the factory for
additional copies of this sheet.
WATER SYSTEM BALANCING
A complete knowledge of the hydronic system, its components, and
controls is essential to proper water system balancing and this procedure
should not be attempted by unqualified personnel. The system must be
complete and all components must be in operating condition BEFORE
beginning water system balancing operations.
Each hydronic system has different operating characteristics depending
on the devices and controls in the system. The actual balancing technique
may vary from one system to another.
After the proper system operation is established, the appropriate system
operating conditions such as various water temperatures and flow rates
should be recorded in a convenient place for future reference.
Before and during water system balancing, conditions may exist which
can result in noticeable water noise or undesired valve operation due to
incorrect system pressures. After the entire system is balanced, these
conditions will not exist on properly designed systems.
CONTROLS OPERATION
Before proper control operation can be verified all other systems must
be in proper operation. The correct water and air temperatures must
be present for the control function being tested. Some controls and
features are designed to not operate under certain conditions or beyond
designed range.
A wide range of controls and electrical options and accessories may be
used with the equipment covered in this manual. Consult the approved
unit submittals, order acknowledgment, and other manuals for detailed
information regarding each individual unit and its controls. Since controls
and features may vary from one unit to another, care should be taken
to identify the controls to be used on each unit and their proper control
sequence. Information provided by component manufacturers regarding
installation, operation, and maintenance of their individual controls is
available upon request.
PHYSICAL DATA
Each unit on a job will have its own unique operating environment and
conditions that may dictate a maintenance schedule for that unit that is
different from other equipment on the job. A formal schedule of regular
maintenance and an individual unit log should be established and
maintained. This will help to achieve the maximum performance and
service life of each unit on the job.
Information regarding safety precautions contained in the
preface at the beginning of this manual should be followed
during any service and maintenance operations.
For more detailed information concerning service operations, consult your
Sales Representative or the Factory.
MOTOR/BLOWER ASSEMBLY
The type of fan operation is determined by the control components and
their method of wiring, and may vary from unit to unit. Refer to the wiring
diagram for each unit for that unit’s individual operating characteristics.
Motors are permanently lubricated, PSC or ECM type and do not require
field lubrication.
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