Honeywell 2000- User Manual
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Table of Contents:
- Page 2 – IMPORTANT
- Page 3 – Mounting Subbase; WIRING SUBBASE; CAUTION
- Page 4 – Typical Wiring Hookups; one-stage cool conventional system with two transformers.
- Page 8 – Mounting Thermostat on Subbase
X-XX UL
INSTALLATION INSTRUCTIONS
® U.S. Registered Trademark
Copyright © 1996 Honeywell Inc. • • All Rights Reserved
Q7300A,C,D,G Series 2000
Commercial Thermostat Subbases
APPLICATION
The Q7300 Thermostat Subbases are used with T7300
Thermostats to provide electronic control of commercial
24 Vac single or multistage heat pump or conventional
heating and cooling systems. Select models have termi-
nals for LEDs and remote temperature sensors. Refer to
Table 1. All Q7300 Thermostat Subbases require a
common wire to the supply power.
Table 1. Description of Q7300 Subbases.
a
Depends on model.
RECYCLING NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do n
ot
place your old
control in the trash
Contact your local waste management authority for
instructions regarding recycling and the proper
disposal of the old thermostat.
INSTALLATION
When Installing this Product…
1. Read these instructions carefully. Failure to follow
the instructions can damage the product or cause a
hazardous condition.
2. Check the ratings given in the instructions and on
the product to make sure the product is suitable for
your application.
3. Installer must be a trained, experienced service
technician.
4. After completing installation, use these instructions
to check out the product operation.
Location
Subbase without Remote-Mounted
Temperature Sensor
Install the thermostat about 5 ft (1.5m) above the floor in
an area with good air circulation at average temperature.
See Fig. 1.
Do not install the thermostat where it can be affected by:
—
drafts, or dead spots behind doors and in corners.
—
hot or cold air from ducts.
—
radiant heat from sun or appliances.
—
concealed pipes and chimneys.
—
unheated (uncooled) areas such as an outside wall
behind the thermostat.
Subbase with Remote-Mounted
Temperature Sensor(s)
If only the remote-mounted temperature sensor(s) is used
to sense and control room temperature, then install the
thermostat in an area that is accessible for setting and
adjusting the temperature and settings.
If both the subbase and remote-mounted temperature
sensor(s) are used to sense and control room tempera-
ture, then install the subbase about 5 ft above the floor in
an area with good air circulation.
Maximum Stages
a
Model
Applications
Thermostat Required
Heat
Cool
Hookup Drawing
Q7300A
Conventional
T7300D, F
2
2
9-12
Q7300C
Heat Pump
T7300E, F
3
2
13-15
Q7300D
Heat Pump
T7300E, F
3
2
16
Q7300G
Conventional
T7300D, F
3
3
17
62-0135
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Summary
62-0135 2 Q7300A,C,D,G SERIES 2000 COMMERCIAL THERMOSTAT SUBBASES Fig. 1. Typical location of thermostat or remote-mounted sensor. Install the remote-mounted sensor(s) about 5 ft (1.5m)above the floor in an area with good air circulation ataverage temperature. See Fig. 1. Do not mount the sensor(s) ...
62-0135 3 Q7300A,C,D,G SERIES 2000 COMMERCIAL THERMOSTAT SUBBASES Fig. 5. Five T7047G Sensors providing temperature averaging network for T7300/Q7300 Thermostat/Subbase. Fig. 6. Nine T7047C Sensors providing temperature averaging network for T7300/Q7300 Thermostat/Subbase. Mounting Subbase The subba...
62-0135 4 Q7300A,C,D,G SERIES 2000 COMMERCIAL THERMOSTAT SUBBASES Typical Wiring Hookups Fig. 9. Typical hookup of T7300D,F/Q7300A in one-stage heat and one-stage cool conventional system with two transformers. Fig. 10. Typical hookup of T7300D,F/Q7300A in two-stage heat and one-stage cool conventio...
