9
Table 4 — Additional Analog Inputs
LEGEND
Table 5 — Main Base Board and Economizer Control Board Outputs
LEGEND
Table 6 — CCN Communication Bus Wiring
INPUT
PIN
CONNECTION
POINT
TERMINAL
CONNECTION
POINT
COMMENT
T55
Space Temperature (SPT)
J8 — 1,2 (MBB) TB3 — 7,8 Part No. = CEC0121448-01
T56
Space Temperature (SPT) and Space
Temperature Offset (SPTO)
J8 — 1,2,3 (MBB) TB3 — 7,8,9 Part No. = CEC0121503-01
Indoor Air Quality (IAQ)
J5 — 2,3 (ECB) TB5 — 2,3 Part No. = CRCBDIOX001A00
Outdoor Air Quality (OAQ)
J5 — 3,5 (ECB) TB5 — 3,4 Part No. = CRCBDIOX001A00
ECB —
Economizer Control Board
MBB —
Main Base Board
OUTPUT
PIN
CONNECTION
POINT
DESCRIPTION
C.A1
J10 — 11 (MBB) First compressor of Circuit A
C.B1
J10 — 9 (MBB) First compressor of Circuit B
C.C1
J10 — 6 (MBB) First compressor of Circuit C
IFC
J10 — 21 (MBB) Request for indoor fan. IGC controls the Indoor Fan Motor (48HG only)
Fan Power
J10 — 3 (MBB) Allows indoor fan to operate
OFC1
J10 — 19 (MBB) Controls outdoor fan motor 1
OFC2
J10 — 16 (MBB) Controls outdoor fan motor 3 and 6 (also 2 and 5 on size 028 units)
OFC3
J10 — 13 (MBB) Controls outdoor fan motor 4
W1
J10 — 27 (MBB) Request for first stage of heating. IGC controls heating (48HG only).
W2
J10 — 25 (MBB) Second stage of heating.
ALARM
J10 — 23 (MBB) TB4 — 7,8
Economizer Power
J8 — 18 (ECB) ECB can turn off the power to the actuator
Economizer Control Signal
J7 — 1, 3 (ECB) Belimo Communication Protocol
PE_1
J8 — 3 (ECB) Power Exhaust Motor No. 1
PE_2
J8 — 6 (ECB) Power Exhaust Motor No. 2
ECB —
Economizer Control Board
IFC —
Indoor-Fan Contactor
IGC —
Integrated Gas Controller
MBB —
Main Base Board
OFC —
Outdoor-Fan Contactor
MANUFACTURER PART NO.
Alpha
2413 or 5463
American
A22503
Belden
8772
Columbia
02525
Run Status
Service Test
Temperature
Pressures
Setpoints
Inputs
Outputs
Configuration
Time Clock
Operating Modes
Alarms
Alarm Status
ENTER
MODE
ESCAPE
Fig. 7 — Scrolling
Comfort
Link™ Display
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