Specifications

17 I 14 I I I

J1O J11 RUN TEST J12

(_ SEPARATION OF CIRCUITS TO EACH 24V TRANSFORMER MUST BE MAINTAINED

I.........I T55IFANSTATOSl

1 2 3 4 5 6 7 8 9 10 R Y1 Y2 W1 W2 G C X 1 2 1 2 3 1 2

Fig. 25 -- Low-Voltage Terminal Strip

LEN CCN

Table 56 -- Field Connection Terminal Strip

CONNECTION

TERMINAL LABEL DISPLAY NAME POINT DESCRIPTION SENSOR LOCATION TYPE OF I/O PIN NUMBER

1 24 VAC power 24 VAC output J10, 17

2 IAQ Indoor air quality sensor return/space 4-20 mA input J10, 16

3 Indoor & outdoor air quality common 4-20 mA input J10, !5

4 OAQ or Outdoor air quality sensor, or economizer

SRRH Space humidity sensor space 4-20 mA input J10, 14

5 RMOC Remote occupancy switch field installed 24 VAC input J10, !3

6 Outdoor enthalpy switch power economizer 24 VAC input J10, 11-12

ENTH or Outdoor enthalpy switch, or economizer, or

7 IAQ.S Indoor air quality switch return/space 24 VAC input J1O, 9-10

8 EC.CP or EC.AP Economizer actuator (digital control) 2-10 VDC output J10, 6-8

EC.CP Economizer actuator (analog control) economizer 2-10 VDC output

9 Economizer signal common economizer VDC J10, 3-5

10 EC.CP Economizer actuator (digital control) communication

EC.AP Economizer actuator (analog control) economizer 2-10 VDC output J10, 1-2

R 24 VAC power 24 VAC output Jl!, 11-14

Y1 Y1 Thermostat Y1 (1st stage cool) space 24 VAC input J11 ,!0

Y2 Y2 Thermostat Y2 (2nd stage coo!) space 24 VAC input J11, 9

W! W1 Thermostat W1 (1st stage heat) space 24 VAC input J11,7-8

W2 W2 Thermostat W2 (2nd stage heat) space 24 VAC input J11,6

G G Thermostat G (Fan) space 24 VAC input J11,5

C 24 VAC common 24 VAC output J11,2-4

X ALRM Alarm output (normally open) 24 VAC output J11, 1

FIRE SHUTDOWN !-2, FDWN Fire shutdown switch supply/return/space switch input J12, 6-7

or HUM Space humidity switch space

HUMIDISTAT 1-2"

T55 1-2 SPT Space temperature (T55t56) space 10k thermistor J12, 4-5

Space temperature offset (T56) or space or return 10k thermistor J12, 3-4

T55 2-3 SPTO or RAT Return air temperature

LEN Local Equipment Network (LEN) communication J13, 1-3, 4-5

CCN Carrier Comfort Network (CCN) communication J13, 6-8, 4-5

*Refer to Third Party Control section on page 38 for information on wiring fire shutdown with a Humidi-MiZer system.