Specifications

2
Table 1 — TB3 Location for 30GTN,GTR,GUN,GUR and 30HK,HL,HW
*And associated modular sizes.
UNIT MODEL DESCRIPTION OF TB3 LOCATION
30GTN,GTR,GUN,GUR040-110*
Open control door (left side) at end of unit. TB3 is located in the bottom left corner of the control
box through an opening in the inner panel.
30GTN,GTR,GUN,GUR130-210*
Open the control door on the compressor side of the unit. TB3 is located on a bracket attached to
the left side of the control box.
30GTN015-035
Open control door at end of unit. TB3 is located in the upper right corner of the control box
through an opening in the inner panel.
30HK,HL040-060 and 30HW018-040
TB3 can be accessed without opening the control box door. It is located at the upper right corner
of the control box.
(
)
CCN — Carrier Comfort Network
CHT — Cooler Heater Thermostat
CLHR — Cooler Heater Relay
CPCS — Compressor Protection and Control System
CR — Control Relay
EMM — Energy Management Module
EQUIP — Equipment
EXV — Electronic Expansion Valve
FB — Fuse Block
FIOP — Factory-Installed Option Package
GND — Ground
Fig. 2 — TB3 Location, 30GTN,GTR,GUN,GUR040-110, and Associated Modular Units
LEN — Local Equipment Network
LLSV — Liquid Line Solenoid Valve
MBB — Main Base Board
NEC — National Electrical Code
TB — Terminal Block
TDR — Time-Delay Relay
TRAN — Transformer
TXV — Thermostatic Expansion Valve
Terminal Block Connection
Field Control Wiring
LEGEND