Honeywell 63-2666-03 - Manual
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Table of Contents:
- Page 3 – INSTALLATION; CAUTION; MERCURY NOTICE; Location; Subbase
- Page 4 – Mounting Subbase
- Page 5 – Wiring
- Page 6 – Mounting Thermostat on Subbase; SETTING; Using Thermostat Keys
- Page 7 – Setting System and Fan; System Settings
- Page 8 – INSTALLER SETUP; Setup Using Keypad
- Page 9 – Configuration
- Page 11 – Holidays and 365 - Day Clock
- Page 13 – Special Functions; OPERATION; Startup Operation
- Page 14 – Cycle Rates
- Page 15 – Recovery Ramping for Heat Pump; Heat pump ramping for heating proceeds as; Auxiliary Relay; Relay for Economizers
- Page 16 – Other Uses for the Auxiliary Relay
- Page 17 – Dehumidification; Control Through Cooling; Options Utilizing Auxiliary Output
- Page 20 – Automation and Control Solutions
PRODUCT DATA
63-2666-03
T7351 Commercial Programmable Thermostat
FOR SINGLE- OR MULTI-STAGE CONVENTIONAL/HEAT PUMP SYSTEMS
APPLICATION
The T7351 Commercial Programmable Thermostat controls
24 Vac commercial single zone heating, ventilating and air
conditioning (HVAC) equipment. The T7351 consists of a
thermostat and subbase. The thermostat includes the keypad
and display for 365-day programming. The subbase includes
equipment control connections. The subbase mounts on the
wall and the thermostat mounts to the subbase.
FEATURES
• Typically used in buildings (including: restaurants,
shopping malls, office buildings and banks) under
55,000 square feet.
• For single zone rooftop units, split systems, heat
pumps or hot/chilled water systems.
• 365-day programming.
• Two Occupied and two Not Occupied periods per day.
• Individual heat and cool setpoints available for
Occupied and Not Occupied periods.
• P+I+D control minimizes temperature fluctuations.
• Recovery ramp control automatically optimizes
equipment start times based on building load.
• Convenient overrides allow temporary setpoint
changes.
• Keypad multi-level lockout available with all models.
• Remote sensor capability for temperature (including
outdoor air and discharge air) and humidity sensors.
• Auxiliary subbase contact typically interface with a
Honeywell Economizer System (for total rooftop
control integration) or act as dehumidification output.
• Universal Versaguard Thermostat guards available.
Contents
Application ........................................................................ 1
Features ........................................................................... 1
Specifications ................................................................... 2
Ordering Information ........................................................ 2
Setting .............................................................................. 6
Installer Setup .................................................................. 7
Operation .......................................................................... 12
Troubleshooting Guide (Table 11) ..................................... 17
Wiring Diagram (Figures 14 and 15) ................................ 19
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Summary
T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 3 63-2666—03 Table 2. Default Setpoints. Fig. 1. Thermostat and Subbase Dimensions in inches (mm). Accessories: Duct Discharge Air Sensors: C7041B (6 or 12 in. [152 or 305 mm]), C7041C (18 in. [457 mm]), C7041J (12 ft. [3.66 m] averaging), C7770A (8 in. [203 ...
T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 63-2666—03 4 CAUTION Equipment Damage Hazard. Can damage the TIM connection beyond repair. Disconnect the TIM cable prior to opening or closing the thermostat cover. NOTE: Allow sufficient clearance below the thermostat to plug in the TIM cable. Install the r...
T7351 COMMERCIAL PROGRAMMABLE THERMOSTAT 5 63-2666—03 Fig. 5. Nine TR21 Sensors Providing a Temperature Averaging Network for T7351 Thermostat. Fig. 6. Mounting the Subbase. Wiring CAUTION Electrical Shock or Equipment Damage Hazard. Can shock individuals or short equipment circuitry. Disconnect pow...
