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The T8024 Programmable Multistage Thermostat
provides electronic control of single-zone, multistage
heating and cooling systems. First stage and second
stage cooling cycle rates are fixed at 3 cph. Heating
cycle rate is selectable. Temperature indication can be
set for °F or °C.
The T8024 Thermostat is powered from the system
transformer. Batteries are not required because setpoints
are held permanently by non-volatile memory.
T8024 includes a thermostat, wallplate (for wiring and
mounting thermostat) and owner's guide.
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.
Contact your local waste management authority
for instructions regarding recycling and the
proper disposal of an old control containing
mercury in a sealed tube.
If you have questions, call Honeywell Inc. at
1-800-468-1502.
INSTALLATION
When Installing this Product...
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazard-
ous 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 installation is complete, check out product
operation as provided in these instructions.
® U.S. Registered Trademark
Copyright © 2000 Honeywell •
T8024D Programmable
Multistage Thermostat
• All Rights Reserved
INSTALLATION INSTRUCTIONS
CAUTION
Electrical Shock or Equipment Damage
Hazard.
Can shock individuals or short equipment
circuitry.
Disconnect power supply before installation.
Location
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 the sun or appliances.
— concealed pipes and chimneys.
— unheated (uncooled) areas such as an outside wall
behind the thermostat.
This thermostat is a precision instrument and was
carefully adjusted at the factory. Handle it carefully.
Mounting Wallplate to Wall
IMPORTANT
Level only for appearance. The thermostat func-
tions normally even when not level.
Mount wallplate, T8024 and the screws provided (see
Fig. 2) as follows:
1. Place the wallplate at the desired location on the
wall.
2. Pull the thermostat wire through the entrance hole
on the decorator cover plate, then through the wall-
plate entrance hole.
3. Select the two mounting holes that best fit the
application.
4. Fasten the wallplate to the wall using the anchors
and screws provided.
5. After wiring the wallplate, plug the hole to prevent
drafts from affecting the thermostat; see Wiring
section.
69- 1387- 1
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Table of Contents
Related Manuals for Honeywell Tradeline T8024D
Summary of Contents for Honeywell Tradeline T8024D
- Page 1 Handle it carefully. proper disposal of an old control containing mercury in a sealed tube. Mounting Wallplate to Wall If you have questions, call Honeywell Inc. at 1-800-468-1502. IMPORTANT Level only for appearance. The thermostat func- INSTALLATION tions normally even when not level.
- Page 2 T8024D PROGRAMMABLE MULTISTAGE THERMOSTAT 5 FEET [1.5 METERS] M11338 Fig. 1. Typical location of thermostat. The T8024 Thermostat is powered through the system transformer and is adaptable to most 24 Vac multistage heating-cooling systems. Refer to Fig. 5 for typical wiring WALL WALL hookups.
-
Page 3: Operation
T8024D PROGRAMMABLE MULTISTAGE THERMOSTAT DASHED LINES INDICATE TABS TERMINAL FOR STRAIGHT FOR WRAPAROUND ON BACK OF THERMOSTAT SCREW INSERTION STRIP STRIP 7/16 IN. (11 MM) 5/16 IN. (8 MM) ENGAGE TABS AT TOP OF THERMOSTAT WITH SLOTS ON WALLPLATE. M20212 Fig. -
Page 4: Installer Setup
T8024D PROGRAMMABLE MULTISTAGE THERMOSTAT Slide the SYSTEM switch in the bottom right corner of d. Press the key. Factory configuration (FC) is the thermostat to select the desired system setting. displayed A typical example is shown, but infor- mation displayed varies by model. This infor- mation is for factory use only. -
Page 5: Setting The Current Time And Day
T8024D PROGRAMMABLE MULTISTAGE THERMOSTAT b. Press to change number of cooling stages. 5. Exit Installer Setup. a. Press the key to save all changes and return to normal operation. M20215 c. Press to display number of heat stages. M12590A Table 1. Heating Cycle Rates for Stage-Two Heating. System Cycles Per Hour M20217... - Page 6 Make certain all equipment responds properly to the thermostat. +RPH DQG %XLOGLQJ &RQWURO +RPH DQG %XLOGLQJ &RQWURO +RQH\ZHOO +RQH\ZHOO /LPLWHG+RQH\ZHOO /LPLWpH 'RXJODV 'ULYH 1RUWK '\QDPLF 'ULYH *ROGHQ 9DOOH\ 01 6FDUERURXJK 2QWDULR 09 = 69-1387-1 G.H. Rev. 10-01 Printed in Mexico www.honeywell.com/yourhome...