KRUEGER A Series User Manual

32
KHF - SERIES A FAN COIL UNITS
INSTALLATION, OPERATION, AND MAINTENANCE MANUAL
FRBii INPUTS AND OUTPUTS
TB1 – Low Voltage Peripheral Devices
(See Table F.9 for detailed description of each signal)
TABLE F.1 – SCREW TERMINAL (TB1) SIGNAL IDENTIFICATION
PIN SIGNAL
1 Y1 – Cool 1
2 Y2 – Cool 2
3 W1 – Heat 1
4 L – Low
5 M – Medium
6 H - High
7 G – Fan Enable
8 C – Common (through JP2)
9 C – Common (through JP2)
10 R – 24VAC
11 S2 – Auxiliary Input (Heat 2)
12 S1 – Common
J1 – Low Voltage Peripheral Devices
TABLE F.2 – LOW VOLTAGE PERIPHERAL DEVICE (J1) SIGNAL IDENTIFICATION
PIN SIGNAL
1 R – 24VAC
2 S2 – Aux In (Heat 2)
3 Y1 – Cool 1
4 Y2 – Cool 2
5 LOW
6 MED
7 HIGH
8 24V
9 24V
10 G – Fan Enable
11 W1 – Heat 1
12 COM
13 DAMP - Damper
14 COM
15 HEAT – Heat output
16 COM
17 24V
18 S1 – Common
W1 – MTR PWR
The MTR PWR quick connect provides voltage to the line
side of the fan speed relays through an external jumper. For
PSC motors, this will be the line voltage of the unit. For EC
motors, this will either be 24VAC (without PWM) or a switch
contact common (with PWM).
J2/J3 – Incoming Power
TABLE F.3 – INCOMING POWER (J2 & J3) SIGNAL IDENTIFICATION
PIN SIGNAL
1 NEUT
2 120
3 208
4 240
5 277
J4/J5 – Motor Output
TABLE F.4 – MOTOR OUTPUT (J4 & J5) SIGNAL IDENTIFICATION
PIN SIGNAL
1 LOW
2 MED
3 HIGH
4 NEUT
F1
T1
T2
J4
J1
TP1
TP2
JP2
J2
J3
C1
J5
W1
K4
TP1
K5
K2
K1
TB1
JP3
W2
LEVEL
MOTOR OUTPUT
MTR PWR
SCREW
TERMINALS
LOW VOLTAGE
PERIPHERAL DEVICE
EARTH
INCOMING POWER
Figure F.2 – Connector layout
W2 – EARTH
EARTH connection grounds the secondary side of the
transformer to the enclosure cabinet through a wire bonded
to the control enclosure.

KRUEGER A Series Specifications

General

Brand	KRUEGER
Model	A Series
Category	Fan
Language	English