SPYDER® LON PROGRAMMABLE, VAV/UNITARY CONTROLLERS
63-2685—03
18
Fig. 21. Controller wiring diagram (model PUL6438S shown) for typical AHU application. (For note 2, refer to Fig. 15.)
1
2
1
2
EARTH GROUND WIRE LENGTH SHOULD BE HELD TO A MINIMUM. USE THE HEAVIEST GAUGE WIRE AVAILABLE, UP TO
14 AWG (2.O MM
2
) WITH A MINIMUM OF 18 AWG (1.O MM
2
), FOR EARTH GROUND WIRE.
TO ASSURE PROPER ELECTRICAL CONTACT, WIRES MUST BE TWISTED TOGETHER BEFORE INSERTION INTO THE
TERMINAL BLOCK.
ANALOG OUTPUTS FROM SENSOR ARE 4 TO 20 mA SIGNALS. A 499 OHM 1% TOLERANCE (OR BETTER) PRECISION
RESISTOR IS REQUIRED TO DRIVE THIS AND OTHER 4 TO 20 mA SIGNAL DEVICES. PLACE THIS RESISTOR AS CLOSE
AS POSSIBLE TO THE DRIVEN DEVICE.
M29756
AO-1
DI-1
UI-1
UI-2
COM
24 VAC
24 VAC
COM
+
-
DO-1
DO-2
DO-3
DO-4
DO-8
UI-3
COM
3
COM
COM
COM
DISCHARGE
AIR TEMP
COM
UI-6
OUTDOOR
ENTHALPY
RETURN
ENTHALPY
20 VDC
20 VDC
3
499
2
COMP2
COMP 1
HEAT 2
HEAT 1
FAN
UI-4
499
SBUS1 SBUS2
AO-1 COM AO-2 AO-3 COM
UI-1 COM UI-2 UI-3 COM UI-4 UI-5 COM UI-6
DI-1 DI-2 COM DI-3
20V DC
DI-4
NET
-2
NET
-1
SHLD
EGND
24 V
AC
24V
AC COM
DO-1
COM
DO-2
DO-3 DO-4
DO-5
COM
DO-6 COM
1 2 3 4 5 6 7 8
1
0
9
2 3 4 5 6 7 8 0
9
1
1 1 1 1 1 1 1 1 2
1
1 2 3 4 5 6 7 8 0
9
2
2 2 2 2 2 2 2 2 3
3
1 2 3 4 5 6 7 8 0
9
3
3 3
3 3
3 3
3 4
DO-7 DO-8 COM
L
ON
W
ORKS
-BUS
L
ON
W
ORKS
-BUS
DIP
SWITCH
S3 (TR23
AND TR24
ONLY.)
ON
SW1 SW2 SW3
DIP SWITCH S2
ON
SW1 SW2
DIP
SWITCH
S1
ON
SW1 SW2
DO NOT
CHANGE
THIS
SWITCH
POSITION.
1
11 10 9 8 7 6 5 4 3 2
12
GND
SENSOR
LON +
LON -
SETPT
LED
OVERRIDE
24 V
A
C
HUM
4
TR23-H
ONLY
DIP SWITCH S1 FOR HUMIDITY MODELS ONLY. SEE TR23 INSTALLATION INSTRUCTIONS, FORM NO. 62-0267,
FOR CONFIGURATION DETAILS.
4
UI-5
