A
AUX
B
BP
C
CAP
CB
CCB
CCH
CCN
CEM
COMP
CR
CS
CSB
DP
DPT
DS
ECB-1
ECB-2
EDT
FlOP
FS
FU
GND
HC
HGBP
HIR
HPS
HR
HS
IAQ
IDF
IDM
IFC
IFCB
IFM
IGC
IP
LAT
LEN
LS
MBB
MGV
NEC
OARH
OAT
OFC
OFM
PEC
PEM
LEGEND AND NOTES FOR FIG. 15-25
LEGEND
-- Circuit A
-- Auxiliary Contact
-- Circuit B
-- Building Pressure Transducer
-- Contactor, Compressor
-- Capacitor
-- Circuit Breaker
-- Control Circuit Breaker
-- Crankcase Heater
-- Carrier Comfort Network ®
-- Controls Expansion Module
-- Compressor Motor
-- Control Relay
-- Compressor Safety
-- Compressor Current Sensing Board
-- Duct Pressure Sensor
-- Discharge Pressure Transducer
-- Disconnect Switch
-- Economizer Control Board
-- Building and Supplier Air Control Board
-- Evaporator Discharge Air Temperature
-- Factory-Installed Option
-- Flame Sensor
-- Fuse
-- Ground
-- Heat Contactor
-- Hot Gas Bypass
-- Heat Interlock Relay
-- High Pressure Switch
-- Heat Relay
-- Hall Effect Induced Draft Motor Switch
-- Indoor Air Quality
-- Induced Draft Fan
-- Induced Draft Motor
-- Indoor Fan Contactor
-- Indoor Fan Circuit Breaker
-- Indoor Fan Motor
-- Integrated Gas Control Board
-- Internal Compressor Protector
-- Staged Gas Temperature Sensor
-- Local Equipment Network
-- Limit Switch
-- Main Base Board
-- Main Gas Valve
-- National Electrical Code
-- Outdoor Air Relative Humidity
-- Outdoor Air Temperature Sensor
-- Outdoor Fan Contactor
-- Outdoor Fan Motor
-- Power Exhaust Contactor
-- Power Exhaust Motor
PL --
RARH --
RAT --
RLA --
RLY --
RS --
SCB --
SCT --
SDU --
SST --
T-55 --
T-56 --
TB
TRAN --
VAV --
VFD --
©
45_
0
Plug
Return Air Relative Humidity
Return Air Temperature Sensor
Rated Load Amps
Relay
Rollout Switch
Staged Gas Heat Control Board
Saturated Condensing Temperature Sensor
Scrolling Marquee Display
Saturated Suction Temperature Sensor
Room Temperature Sensor
Room Temperature Sensor with Setpoint
Terminal Block
Transformer
Variable Air Volume
Variable Frequency Drive
Terminal Block
Terminal (Unmarked)
Terminal (Marked)
Splice
Factory Wiring
Field Wiring
To indicate common potential only.
Not to represent wiring.
To Indicate FlOP or Accessory
THERMOSTAT MARKINGS
BM -- Blower Motor
C -- Common
CM -- Inducer Motor
CS -- Centrifugal Switch
G -- Fan
IFO -- Indoor Fan On
L1 -- Line 1
R -- Thermostat Power
RT -- Power Supply
SS -- Speed Sensor
Wl -- Thermostat Heat Stage 1
W2 -- Thermostat Heat Stage 2
X -- Alarm Output
Y1 -- Thermostat Cooling Stage 1
Y2 -- Thermostat Cooling Stage 2
NOTES:
1. Factory wiring is in accordance with the National Electrical
Codes. Any field modifications or additions must be in compli-
ance with all applicable codes.
2. Use 75 ° C min wire for field power supply, use copper wires for
all units.
3. All circuit breakers "Must Trip Amps" are equal to or less than
156% RLA.
4,
5.
Compressor and fan motors are thermally protected -- three
phase motors protected against primary single phase conditions.
Red jumper wire must be added between R, Wl, and W2 for
space temperature sensor and all VAV units with heat and tem-
porarily during Service Test mode when the heaters need to
operate.
ll7
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