The Q7300 Thermostat Subbases are used with T7300
Thermostats to provide electronic control of commercial
Depends on model.
If this control is replacing a control that contains
mercury in a sealed tube, do n
control in the trash
Contact your local waste management authority for
instructions regarding recycling and the proper
disposal of the old thermostat.
When Installing this Product...
1. Read these instructions carefully. Failure to follow
the instructions can damage the product or cause a
2. Check the ratings given in the instructions and on
the product to make sure the product is suitable for
3. Installer must be a trained, experienced service
4. After completing installation, use these instructions
to check out the product operation.
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Copyright © 1996 Honeywell Inc. •
Commercial Thermostat Subbases
Table 1. Description of Q7300 Subbases.
place your old
• All Rights Reserved
Q7300A,C,D,G Series 2000
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.
Subbase without Remote-Mounted
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
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.