® U.S. Registered Trademark
Copyright © 2003 Honeywell International Inc. •
• All Rights Reserved
INSTALLATION INSTRUCTIONS
69-1688
T834C Heating and
Cooling Thermostat
APPLICATION
The T834C Thermostat (see Fig. 1) controls 24 to 30 Vac single-stage heating-cooling systems. See Table 1 for
application information. An spdt mercury switch makes R to W on a temperature fall for heating, and R to Y on a
temperature rise for cooling.
Fig. 1. T834C internal view.
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 an old control.
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 the product
operation as provided in these instructions.
Table 1. T834C Specifications.
Model No.
Application
Heat Anticipation
Switching
See Fig.
No.
System
Fan
T834C
For use in standard heating-
cooling systems.
0.18A to 1.0A,
adjustable.
Heat-Off-
Cool
On-Auto
2
.18
.2
.25
.3
.5
.7
.9
L
O
N GE R
FAN
SWITCH
TEMPERATURE
SETTING LEVER
MOUNTING HOLE
SYSTEM
SWITCH
ADJUSTABLE HEAT
ANTICIPATOR
INDICATOR
BIMETAL ELEMENT
BEHIND SCALE
MOUNTING HOLE
(THERMOSTAT
TO WALL OR
OUTLET BOX)
M21180
69-1688.fm Page 1 Tuesday, May 6, 2003 10:05 AM
