KAH Operation & Maintenance Guide
Page: 21 of 88
Krueger | 1401 N Plano Rd | Richardson, TX 75081 | 972.680.9136 | kruegerinfo@krueger-hvac.com | www.krueger-hvac.com
SECTION 2 - START-UP & OPERATION (CONTINUED)
FIGURE 20 - PURGE ANGLE DETAIL
FIGURE 21 - PURGE ANGLE DETAIL
NovelAire® Technologies
Start-Up Procedure
1. Does the rotor rotate freely by hand? If not, recheck
the seal to determine whether or not it is binding and
if so adjust seals following the instructions below.
2. Is the motor rotation correct? This can be checked
by detaching the belts from the drive sheave and
bumping the motor. The sheave should be rotating
in the direction such that the belt will result in rotation
per the exterior markings. If not, rewire the motor.
3. Does the air flow orientation match up to design? See
the identification markings on the cassette.
4. Are the belts on correctly and sufficiently tight? Belt
length is set by the manufacturer. Consult NovelAire®
Technologies if the belt appears too loose.
5. Is the VFD programmed to control the unit and to
prevent frost formation? If not, follow the instructions
in the manual accompanying the VFD and/or consult
NovelAire® Technologies.
Indirect Fired Gas Heat Start Up
This gas burner has been carefully inspected and tested
at the factory; however, different conditions at the job site,
including controls that have been added at the time of
installation, require careful testing and final adjustment
for satisfactory operation. The Burner Test Report/Factory
Specification Sheet in each AHU shows the general data
recorded during the operation and safety tests at the
factory. This data should be used as a general guide; with
final data recorded on the start-up form. Do not exceed
550°F flue temperature at the ID fan inlet. Do not exceed
200°F supply air temperature.
Review the burner control literature, including wiring,
piping, cut sheets and drawings before attempting to start
this gas heating equipment.
All factory test start up burner specifications are located
on a laminated Burner Test Report/Factory Specification
Sheet located on the inside of the control panel door.
Each gas burner has been test run and inspected at
the factory. Adjustments to the component settings are
typically not required. However, measurements of the
system parameters should be taken and compared to
the measurements recorded on the burner test report, to
ensure safe and reliable operation.
Use the following instructions to start an indirect fired gas
heat system on an AHU.
CAUTION -
For your safety, this product requires a
check, test, and start-up adjustment by a qualified
HVAC technician. Do not use for temporary heat
prior to start-up.
