KRUEGER A Series User Manual

15
KHF - SERIES A FAN COIL UNITS
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
GENERAL
Before beginning any start-up operation, the startup
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, ductwork, 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.
Fan 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 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. 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.
!
Caution
AIR SYSTEM BALANCING
All ductwork 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 ductwork 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.
Some selections may require air balancing in the field.
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.
SECTION TWO - START-UP

KRUEGER A Series Specifications

General

Brand	KRUEGER
Model	A Series
Category	Fan
Language	English