Carrier 30GT-911---062, Installation Instructions Manual

2

Table 1 — Terminal Block (TB) Locations Containing LEN Connector

Table 2 — 30RB315-390 Modular Unit Combinations

UNIT MODEL

LOCATION DESCRIPTION OF TB CONTAINING LEN CONNECTOR

30HK,HL040-060

TB3 can be accessed without opening the control box door. It is located at the upper right corner 
of the control box.

30HW018-040

TB3 can be accessed without opening the control box door. It is located at the upper right corner 
of the control box.

30RB060-120

TB3 can be accessed by opening the control box door. It is located at the right side of the hinged 
display door.

30RB130-300

TB3 can be accessed by opening the left hand (smaller) door of the fan control panel. It is 
located at the right side of the display panel.

30RB315-390

Unit sizes 30RB315-390 are modular units and thus, accept two Navigator™ modules, one on 
each unit module. See Table 2.

48PG03-16 (TB1) 48PG20-28 (TB2)
50PG03-16 (TB1) 50PG20-28 (TB2)

Both TBs are accessed by opening the control box door. TB1 (PG03-16) or TB2 (PG20-28) is 
located in the lower right of the control box.

48AJ,AK,AW,AY020-060
50AJ,AK,AW,AY020-060

TB3 can be accessed by opening the control box door. It is located in the lower center of the 
control box.
NOTE: If the unit is equipped with an Economizer Circuit Board (ECB), the ECB provides an 
auxiliary RJ14 LEN connector. See product documentation for more detail.

48ZG,ZN,ZT,ZW,Z6,Z8

50ZG,ZN,ZT,ZW,ZX,ZZ,Z2,Z3,Z6,Z7,Z8,Z9

TB3 can be accessed by opening the control box door. It is located to the left of the Scrolling 
Marquee (display).
NOTE: These units provide an auxiliary RJ14 LEN connection on the corner post on the enter-
ing air end of the unit. See product documentation for more detail.

UNIT SIZE

Module A

Module B

30RBA315

30RBA160

30RBA160

30RBA330

30RBA170

30RBA160

30RBA345

30RBA170

30RBA170

30RBA360

30RBA190

30RBA170

30RBA390

30RBA190

30RBA190

LEGEND FOR FIG. 2 - FIG. 8

A

—

Alarm

AUX

—

Auxiliary

C

—

Contactor, Compressor

CAP

—

Capacitor

CB

—

Circuit Breaker

CB-FN —

Circuit Breaker Fan Circuit

CB-HT —

Circuit Breaker Cooler Heater

CB-P

—

Circuit Breaker Pump

CCB

—

Control Circuit Board

CCN

—

Carrier Comfort Network

CLHR

—

Cooler Heater Relay

CR

—

Control Relay

CS

—

Current Sensor

CSB

—

Current Sensor Board

DS

—

Disconnect Switch

ECB

—

Economizer Circuit Board

EMM

—

Energy Management Module

EQUIP —

Equipment

EXV

—

Electronic Expansion Valve

EXVB

—

EXV Board

FB

—

Fuse Block

FB1

—

Fan Board 1

FC

—

Fan Contactor

GCS

—

Ground Current Sensing

GND

—

Ground

HACR

—

Heating, Air Conditioning, and Refrigeration

IDR

—

Inducer Draft Relay

IFC

—

Indoor Fan Contactor

IFCB

—

Indoor Fan Circuit Breaker

MMC

—

Motormaster® Contactor

MMR

—

Motormaster Relay

OFC

—

Outdoor Fan Contactor

PLP

—

Phase Loss Protection

RCB

—

Rooftop Control Board

LEN

—

Local Equipment Network

MBB

—

Main Base Board

NEC

—

National Electrical Code

PMP

—

Pump Contactor

POT

—

Potentiometer

RRB

—

Reverse Rotation Board

SW

—

Switch

TB

—

Terminal Block

TDR

—

Time-Delay Relay

TRAN

—

Transformer

TXV

—

Thermostatic Expansion Value

Terminal Block Connection

Field Power Wiring
Factory Wiring
Field Wiring
Accessory or Option Wiring
To indicate common potential only, not to
represent wiring