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79
Table 56 — Field Connection Terminal Strip
*Refer to Third Party Control section on page 38 for information on wiring fire shutdown with a Humidi-MiZer™ system.
TERMINAL LABEL
DISPLAY NAME
POINT DESCRIPTION
SENSOR LOCATION
TYPE OF I/O
CONNECTION
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, 15
4
OAQ or
SP.RH
Outdoor air quality sensor, or
Space humidity sensor
economizer
space
4-20 mA input
J10, 14
5
RM.OC
Remote occupancy switch
field installed
24 VAC input
J10, 13
6
Outdoor enthalpy switch power
economizer
24 VAC input
J10, 11-12
7
ENTH or
IAQ.S
Outdoor enthalpy switch, or
Indoor air quality switch
economizer, or
return/space
24 VAC input
J10, 9-10
8
EC.CP or EC.AP
EC.CP
Economizer actuator (digital control)
Economizer actuator (analog control)
economizer
2-10 VDC output
2-10 VDC output
J10, 6-8
9
Economizer signal common
economizer
VDC
J10, 3-5
10
EC.CP
EC.AP
Economizer actuator (digital control)
Economizer actuator (analog control)
economizer
communication
2-10 VDC output
J10, 1-2
R
24 VAC power
24 VAC output
J11, 11-14
Y1
Y1
Thermostat Y1 (1st stage cool)
space
24 VAC input
J11,10
Y2
Y2
Thermostat Y2 (2nd stage cool)
space
24 VAC input
J11, 9
W1
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 1-2,
or
HUMIDISTAT 1-2*
FDWN
HUM
Fire shutdown switch
Space humidity switch
supply/return/space
space
switch input
J12, 6-7
T55 1-2
SPT
Space temperature (T55/56)
space
10k thermistor
J12, 4-5
T55 2-3
SPTO or RAT
Space temperature offset (T56) or
Return air temperature
space or return
10k thermistor
J12, 3-4
LEN
Local Equipment Network (LEN)
communication
J13, 1-3, 4-5
CCN
Carrier Comfort Network (CCN)
communication
J13, 6-8, 4-5
SEPARATION OF CIRCUITS TO EACH 24V TRANSFORMER MUST BE MAINTAINED
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
FAN STATUS
T55
J12
FIRE SHUTDOWN
RUN TEST
J13
7
8
J11
7
14
17
J10
LEN
CCN
CCN
(COM)
SHIELD
(-)
(+)
48HG500382
Fig. 25 — Low-Voltage Terminal Strip
a48-7568
Summary of Contents for 48PG24
Page 68: ...68 Fig 14 Low Voltage Control Schematic 48PG20 28 Units without Humidi MiZer System a48 7627...
Page 69: ...69 Fig 15 Low Voltage Control Schematic 48PG20 28 Units with Humidi MiZer System a48 8227...
Page 70: ...70 Fig 16 Low Voltage Control Schematic 50PG20 28 Units without Humidi MiZer System a48 7778...
Page 71: ...71 Fig 17 Low Voltage Control Schematic 50PG20 28 Units with Humidi MiZer System a50 8101...
Page 72: ...72 Fig 18 Power Schematic Units without Humidi MiZer System a48 7628...
Page 73: ...73 Fig 19 Power Schematic Units with Humidi MiZer System a48 8228...
Page 74: ...74 Fig 20 Component Arrangement Units without Humidi MiZer System a48 8229...
Page 75: ...75 Fig 21 Component Arrangement Units with Humidi MiZer System a48 8230...
Page 105: ......