T7300D Programmable Commercial
Thermostat and Q7300A,G Subbases
SPECIFICATION DATA
FEATURES
• Use on multistage conventional applications.
• 7-day programming.
• Two Occupied and two Unoccupied periods per day.
• Individual heat and cool setpoints available for
Occupied and Unoccupied periods.
• Proportional plus Integral (P+I) control eliminates
temperature fluctuations.
• Intelligent Recovery® control automatically optimizes
equipment start times based on building load.
• Intelligent Fan™ feature energizes fan continuously in
the Occupied periods. Fan can also be configured for
conventional heat or electric heat fan operation.
APPLICATION
The T7300D Programmable Commercial Thermostat and
Q7300A,G Subbases control 24 Vac commercial single zone
multistage heating, ventilating and air conditioning (HVAC)
equipment.
• Automatic or manual changeover selectable.
• Universal Versaguard™ Thermostat guards available.
• Convenient overrides allow temporary setpoint changes.
• Remote sensor capability.
• Keypad lockout available.
• Auxiliary contacts can be used to interface with
C7400/W7459 Economizer System for total integration
of rooftop control.
® U.S. Registered Trademark
Copyright © 1997 Honeywell Inc. • All Rights Reserved
63-1267
T7300D PROGRAMMABLE COMMERCIAL THERMOSTAT AND Q7300A,G SUBBASES
SPECIFICATIONS
T7300D Thermostat:
T7300D Programmable Commercial Multistage Thermostat
provides programming keys, Liquid Crystal Display (LCD) and
system operation algorithms.
Q7300A,G Subbases:
Q7300A Thermostat Subbase provides 2 stage heating
and 2 stage cooling control for conventional single
zone systems.
Q7300G Thermostat Subbase provides 3 stage heating
and 3 stage cooling control for conventional single
zone systems.
Electrical Rating:
24 Vac, 50/60 Hz.
20 to 30 Vac, 50/60 Hz.
Batteries:
No batteries required.
Loss of Power:
The thermostat will maintain programmed times and
temperatures for the life of the product. The clock and day
information is retained for a minimum of two hours.
Light Emitting Diodes (LEDs):
Two user-defined LEDs.
Two additional LEDs available on some models.
System Current Draw:
6 VA maximum at 30 Vac, 50/60 Hz.
Output Relay Draw:
See Table 1.
Table 1. Maximum Amps at 30 Vac.
Relay Running (A) Inrush (A)
Fan 1.6 3.5
Heat (all stages) 1.6 3.5
Cool (all stages) 1.6 7.5
Auxiliary (Economizer) 1.6 3.5
Temperature:
Ratings:
Operating Ambient: 40°F to 110°F (4°C to 43°C).
Shipping: -30°F to +150°F (-34°C to +65°C).
Display Accuracy:
±1°F (±0.5°C).
Setpoint:
Heating: 40°F to 90°F (4°C to 31°C).
Cooling: 45°F to 99°F (7°C to 37°C).
Deadband: 2°F (1°C).
Default Settings: see Table 2.
Table 2. Default Setpoints.
Control Occupied Unoccupied
Heating 70°F (21°C) 55°F (13°C)
Cooling 78°F (25.5°C) 90°F (32°C)
Minimum Stage Operation Time:
Minimum On (Heat and Cool): factory setting 2 minutes;
adjustable 0-2 minutes.
Minimum Off (Compressor): factory setting 4 minutes;
adjustable 0-5 minutes.
Minimum Off (Heat): factory setting 4 minutes; adjustable
0-4 minutes.
Remote Sensor Wiring Temperature Offset:
Temperature offset occurs with 500 ft (157m) to 1000 ft
(305m) of 2-wire cable. See Table 3.
Table 3. Temperature Offset.
Temperature
Range 18 AWG 20 AWG 22 AWG
50-90°F -0.4°F -0.7°F -1.0°F
10-32°C -0.3°C -0.4°C -0.6°C
Humidity Ratings:
5% to 90% RH, noncondensing.
Clock Accuracy:
+1 minute per month.
Finish:
Taupe color.
Dimensions:
See Fig. 1.
Mounting Means:
T7300 Thermostat mounts on a Q7300 Subbase. The
subbase mounts horizontally on a wall or outlet box with two
no. 6 x 32 screws (included).
Accessories:
C7400 Enthalpy Sensor (form 63-2140).
M7415 Damper Actuator (form 63-2100).
ML7984 Valve Actuator (form 95C-10753).
R8222 Switching Relay (form 60-2056).
T675A Temperature Control (form 60-2200).
T7022A1010 Remote Temperature Sensor (form 60-0247).
T7047C Remote Temperature Sensor (form 62-3050).
T7047G Remote Temperature Sensor (form 62-3050).
T7147A Remote Temperature Sensor and Override
Module (form 62-3049).
W859F Packaged Economizer (form 63-2476).
W950A System Supervisor (form 60-2351).
W7459 Economizer Logic Module (form 63-2141).
C7046C Discharge Air Sensor (form 60-2350).
C7150B Discharge Air Sensor (form 63-2072).
63-1267 2
T7300D PROGRAMMABLE COMMERCIAL THERMOSTAT AND Q7300A,G SUBBASES
6-3/4 (172)
1/16 (2)
3-1/4 (82)
1-3/8 (35)
1-7/8
(47)
4-1/8
(105)
4-3/4
(121)
1
1-11/16
(43)
7-5/16 (186)
7/8
(22)
Occupied
Start Time
Day/Time
Set Program
Unoccupied
Start Time
Clear
Start Time
Day
Copy
Run
Program
Temporary
Occupied
Continous
Unoccupied
Set Current
1
1 T7200 WALLPLATE DOES NOT HAVE THE LED EXTENSION
Fig. 1. Dimensions of T7300 and Q7300 in in. (mm).
Set Temperature
Occupied
Temp
System
Unoccupied
Temp
Heat/Cool
Settings
Fan
Change
Time/Temp
4-5/8
(117)
5 (127)
9/16
(14)
M10234
63-12673
T7300D PROGRAMMABLE COMMERCIAL THERMOSTAT AND Q7300A,G SUBBASES
Home and Building Control
Honeywell Inc.
Honeywell Plaza
P.O. Box 524
Minneapolis MN 55408-0524
Honeywell Latin American Division
Miami Lakes Headquarters
14505 Commerce Way Suite 500
Home and Building Control
Honeywell Limited-Honeywell Limitée
155 Gordon Baker Road
North York, Ontario
M2H 2C9
Honeywell Europe S.A.
3 Avenue du Bourget
B-1140 Brussels Belgium
Miami Lakes FL 33016
63-1267 J.H. 2-97 Printed in U.S.A.
63-1267 4
Printed on recycled paper containing at
least 10% post-consumer paper fibers.
Honeywell Asia Pacific Inc.
Room 3213-3225
Sun Hung Kai Centre
No. 30 Harbour Road
Wanchai
Hong Kong
Helping You Control Your World
®
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