KRUEGER KLPP, Installation, Start-Up And Service Instructions Manual

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12
Fan Powered Terminal Units IOM
FIGURE 7 – Typical Power Connections for Fan Powered Units with 3-Stage Electric Heat
unit. All disconnect switches on the terminal (if equipped)
should be in the OFF position while making power
connections.
4. Units with electric heat should use copper wires rated at
least 125% of rating plate amperage. Refer to the unit’s
rating label and minimum supply circuit amps.
5. Observe wiring diagram and instructions attached to the
unit. 480-v, 3-phase units require a Wye power source
with a 4th (neutral) wire in addition to the full sized
ground wire. All units must be grounded as required by
NEC 424-14 and 250.
STEP 4 - SYSTEM SETUP AND CALIBRATION
GENERAL
The parallel fan powered terminals (KLPP, KQFP and QFV) are
designed to provide varying quantities of cold primary air
to a space in response to a thermostat demand for cooling.
For a heating demand, the fan will operate to supply ceiling
plenum air to the space. For units equipped with a heating
coil, the heater will operate as required to meet a heating
demand.
The series fan powered terminals (KLPS, KQFS and QFC) are
designed to provide a constant airflow to the space. The air
supplied to the space is a mixture of primary air and ceiling
plenum air. The fan speed is adjusted to provide the required
airflow to the space. In response to a cooling demand from
a thermostat, the damper will increase the amount of cold
primary air while reducing the amount of ceiling plenum air
to decrease the temperature of the air being delivered to the
space.
Most terminal control packages provide pressure
compensation to allow pressure independent operation of
the primary air damper, regardless of changes to the available
static pressure in the supply ductwork. To balance the unit it
is necessary to set both the minimum and maximum airflow
set points of the controller. The many types of control
options available each have specific procedures required
for balancing. Refer to the submittal information for these
requirements.
SET POINTS
Maximum and minimum airflow set points are normally
specified for the job and specific for each unit on the job.
Default set point values are provided by the factory and can
be reset to the specific requirements in the field. The fan
speed must be field adjusted after all discharge ductwork
and diffusers have been installed.
FIELD ADJUSTMENT OF THE MAXIMUM AND MINIMUM
AIRFLOW SET POINTS
Each fan powered terminal unit is equipped with an airflow
sensor installed in the primary air inlet that measures a
differential pressure. The relationship between the airflow
probe pressure and the corresponding airflow is shown in
the airflow sensor graph. See Figure 8. The corresponding
chart for specific probe is attached to each unit.
Power
Supply
120/277V
L1
N
G
Term Block or
Optional Disc Switch
Line Fuse
(Optional)
< Brown >
B
ro
w
n
Brown
Brown
G
re
en
G
re
en
B
ro
w
n
< W
hi
te >
< W
hi
te >
< White >
Thermal Hi-Limit
Auto-Reset (Typ)
White #18
Red
Fan Relay
Orange #18
Crimp
Cap
Red
SCR
2
5
1
4
3
6
CAP
MOTOR
MOTOR
CAP
Dual Motor Option
2 OR 3
2
OR 3
1
1
W
hi
te
#
12
< Brown >
< Brown > < Brown >
(Opt)
Motor
Fuse
(Opt)
Manual
Reset
Black #18
B
la
ck #
18
B
la
ck #
12
B
la
ck #
12
Transformer
Yellow #18
Yellow #18
Yel
low
#
12
Brown #18
Brown #12
B
ro
w
n #
12
White #18
Red #18
Re
d #
18
Re
d #
12
Orange #18
Blue #18
Blue #18
Black #18
Black #18
B
la
ck #
18
B
la
ck #
18
B
la
ck #
18
B
lk #
18
B
lk #
12
Blk #12
W
ht
#
12
Black #18
COM
N.O.
AFS
To
Controller
24 VAC
STEP 1
HEAT CONTACTOR
STEP 2
HEAT CONTACTOR
STEP 3
HEAT CONTACTOR
W
ht
#
18
B 059606 BM 5/96
C 119728 CS 11/97
D T01119 BR 5/01
E T01874 MF 7/02
Notes:
1. Use Thermostat with Isolating Contacts to
prvent Interconnection of class 2 outputs.
2. Use Copper conductors only suitable for 75
degrees C.
3. This Heater has integral limit control.
4. The Air flow must be in the direction indicated
on the unit. Air flow should not be less than
indicated on the label.
5. The Inlet temperature should not exceed 77
degrees fahrenheit.
6. This Unit has 1 Circuit.
7. Wire colors in < > to be sized by unit amps.
Caution:
Electrical shock may result.
Disconnect power prior to
servicing unit.
THIS DOCUMENT AND ITS CONTENT REMAIN THE EXCLUSIVE PROPERTY OF AIR SYSTEM COMPONENTS NO REPRODUCTION, USE OR DISCLOSURE OF THIS
DOCUMENT OR ITS CONTENTS IS AUTHORIZED WITHOUT THE WRITTEN CONSENT OF A DULY AUTHORIZED REPRESENTATIVE OF AIR SYSTEM COMPONENTS
NOTES: LEGEND
FACTORY WIRING
FACTORY PIPING
FIELD WIRING
FIELD PIPING
* PIGGY BACK CONNECTOR
DRAWN BY
FN
DATE
2/14/92
WIRING DIAGRAM
CKD
APPVD
UNLESS OTHERWISE
SPECIFIED
ALL DIMESIONS IN INCHES
[ ] = MILLIMETERS
TOLERANCES
FRACTIONAL = 1/32 [.794]
DECIMAL = 010 [.254]
ANGULAR = 1 0
REMOVE BURRS AND
SHARP EDGES
TITLE
120/277V 1 1Ø
3 STAGE, 3 ELEMENT
DO NOT SCALE THIS DRAWING
SCALE
N/A
SIZE
C
DRAWING NO
00- 713776
REV
E
SHEET
4/99
-04