ENVIRO-TEC
12
FORM ET115.24-NOM12 (718)
SECTION TWO - START-UP
GENERAL
Before beginning any start-up operation, the start-
up personnel should familiarize themselves with the
unit, options and accessories, and control sequence to
understand the proper system operation. All personnel
should have a good working knowledge of general
start-up procedures and have the appropriate start-up
and balancing guides available for consultation.
The initial step in any startup operation should be a
nal visual inspection. All equipment, plenums, duct-
work, and piping should be inspected to verify that
all systems are complete and properly installed and
mounted per ASHRAE and SMACNA guidelines, and
that no debris or foreign articles such as paper or drink
cans are left in the units or other areas. Each unit should
be checked for loose wires and hardware, free blower
wheel operation, and loose or missing access panels or
doors. Except as required during start-up and balancing
operations, no blower-coil units should be operated
without all the proper ductwork attached, supply
and return grilles in place, and all access doors and
panels in place and secure. A clean lter of the proper
size and type (as provided by factory or replacement
matching the original factory size and type) must also
be installed. Failure to do so could result in damage to
the equipment or building and furnishings, and/or void
all manufacturers’ warranties.
Blower-coils are not intended for temporary heat/cool
or ventilation. Units are not designed or equipped to
operate in dusty construction environments. Operation
of the units in conditions outlined above could result in
damage to the equipment or building and furnishings
and/or void all manufacturer’s warranties.
COOLING/HEATING SYSTEM
Prior to the water system start-up and balancing, the
chilled/hot water systems should be ushed to clean
out dirt and debris, which may have collected in the
piping during construction. During this procedure, all
unit service valves must be in the closed position. This
prevents foreign matter from entering the unit and/or
clogging the valves and metering devices. Strainers
should be installed in the piping mains to prevent this
material from entering the units during normal operation.
During system filling, air venting from the unit is
accomplished by the use of the standard manual, or
optional automatic, air vent tting installed on the coil.
In the case of the manual air vent tting, the screw
should be turned counterclockwise no more than 1-½
turns to operate the air vent. Automatic air vents may
be unscrewed one turn counterclockwise to speed
initial venting but should be screwed in for automatic
venting after start-up operations. Check to ensure that
no leaks are prevalent at the coils, coil connections,
piping packages, etc.
The air vent provided on the unit is not
intended to replace the main system air
vents and may not release air trapped
in other parts of the system. Inspect
the entire system for potential air
traps and vent those areas as required,
independently. In addition, some
systems may require repeated venting
over a period of time to properly
eliminate air from the system.
AIR SYSTEM BALANCING
All duct-work must be complete and connected, and all
grilles, lters, 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 unqualied personnel. Some selections
may require air balancing in the eld.
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 for additional copies of this
sheet.
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