® U.S. Registered Trademark
Copyright © 2002 Honeywell •
• All Rights Reserved
INSTALLATION INSTRUCTIONS
69-1412-1
T8624D Chronotherm
®
IV
Deluxe Programmable
Multistage Thermostats
APPLICATION
The T8624D Chronotherm® IV Deluxe Programmable
Multistage Thermostats provides electronic control of 24
Vac single-zone multistage systems.
Refer to Table 1 for a general description of the
thermostats. All T8624 thermostats require a common
wire to supply power.
Table 1. Description of T8624 Thermostats.
MERCURY NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do not place your old
control in the trash. Dispose of properly.
Contact your local waste management authority
for instructions regarding recycling and the
proper disposal of the old control.
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
Install the thermostat about 1.5m (5 ft) 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.
T8624
Changeover
System Selection
Fan
Selection
Comments
D
Automatic
Heat-Off-Cool-Auto
On-Auto
System and fan selections are done by keyboard.
