Honeywell T7350

T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT

29 63-2605—5

Fig. 25. Typical hookup of T7350M for system with two independent heat stages (one modulating), two independent cool stages (one modulating), and two transformers.

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

WHEN INSTALLED ON A SYSTEM WITH TWO TRANSFORMERS, REMOVE THE FACTORY-INSTALLED JUMPER.

USE ECONOMIZER INSTRUCTIONS FOR INSTALLATION DIRECTIONS.

M22006

RCX

SUBBASE

W1 G

T7770 REMOTE SENSOR

MH MC

AUXRH

T5 T6 T7 T4 T3

DISCHARGE

AIR

SENSOR

OUTDOOR

AIR

SENSOR

MOTION

SENSOR

HUMIDITY

SENSOR

OSOS AS MXAS

MHC HP

(HOT)

HEATING

TRANSFORMER

COOLING

TRANSFORMER

L2 1

(HOT)

COMPRESSOR

CONTACTOR 1

HEAT

RELAY 1

123456789

FAN

RELAY

ECONOMIZER

MODULATING

HEAT

(4-20 mA)

–

MODULATING

COOL

(4-20 mA)

–

Contents

Main PRODUCT DATA T7350 Commercial Programmable Thermostat FOR SINGLE- OR MTG512ULTI-STAGE CONVENTIONAL/HEAT PUMP SYSTEMS APPLICATION FEATURES Contents ORDERING INFORMATION FEATURES Features Available via PDA Configuration Features via Optional Network Model-H SPECIFICATIONS Page T7350 COMMERCIAL PROGRAMMABLE THERMOSTAT Fig. 2. T7350H LonMark Space Comfort Controller Rooftop Object (8504) with Node Object. Hardware Input 563-26055 Hardware OutputHardware Output MERCURY NOTICE Location Subbase Mounting Subbase Page Wiring Page Mounting Thermostat on Subbase (Fig. 8) SETTINGS Using Thermostat Keys Setting Temperature Setting System and Fan System Settings INSTALLER SETUP % Setup Using Keypad Setting Keypad Lockout Configuration Special Functions Restore Factory Configuration (Run/Clear) Get Factory Schedule (Info/Clear) Test Mode (Occupied/Not Occupied/Schedule Day) T PROGRAMMING Setting Current Day/Time Setting Schedule Times Program Holidays Copying a Day Clearing Program Start Times Temperature Setpoints Setpoint Limits Programming Temperature Setpoints Using Temporary Occupied Override Using Temporary Not Occupied Override OPERATION Startup Operation T7350 Relay Logic Logic with Modulating Outputs (T7350H1017, M, only) O/B Terminal for Heat or Cool Changeover Recovery Ramping Logic Recovery Ramping for Conventional Systems Recovery Ramping for Heat Pump Systems Auxiliary Relay Relay for Time-Of-Day (Table 16) Relay for Economizers Other Uses for the Auxiliary Relay Default Auxiliary Relay Operations (T7350D, T7350H1009 only) Dehumidification (T7350D,M,H only) Control Through Cooling Options Utilizing Auxiliary Output TROUBLESHOOTING GUIDE (TABLE 19) Page WIRING DIAGRAMS (FIG. 17-25) Fig. 17. Typical hookup of T7350A in two-stage heat and one-stage cool conventional system Fig. 18. Typical hookup of T7350B in two-stage heat and two-stage cool conventional system 63-26055 26 Fig. 19. Typical hookup of T7350B in three-stage heat and two-stage cool heat pump system Fig. 21. Typical hookup of T7350D in two-stage heat and four-stage cool conventional system. Page Page APPENDIX - PDA USAGE Hardware Requirements Setting Clock PDA Programming Configuration Page Page Page Weekly (Wkly) Schedule Holidays Calibration Online Diagnostics