JOhNsON CONTROLs
16
FORM ET115.24-NOM5 (908)
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 final
visual inspection. All equipment, plenums, duct-work,
and piping should be inspected to verify that all systems
are complete and properly installed and mounted, 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, free blower wheel operation,
and loose or missing access panels or doors. Except as
required during start-up and balancing operations, no
fan 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 filter of the proper 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.
COOLING/HEATING sYsTEM
Prior to the water system start-up and balancing, the
chilled/hot water systems should be flushed 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
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 fitting installed on the coil.
In the case of the manual air vent fitting, 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.
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, indepen
-
dently. 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, 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.
