CTC Union 43309 Quick Manual

SERVICE INSTRUCTIONS
FIGURE 4 CALIBRATING THERMOSTAT
Temperature
Bimetal
adjustment
lever
7/32" Calibration wrench
The thermostat is accurately calibrated
before leaving the factory and no further
calibration should be necessary. If the
thermostat appears to be out of calibra-
tion or for any reason fails to function
properly, a qualified serviceperson should
proceed as follows:
1. The anticipator's heat may adversely
affect thermostat recalibration. To
prevent this, disconnect electrical
power, power to the thermostat at the
furnace, main fuse, or breaker box.
2. Move temperature adjustment lever to
a setting about 5˚ above room tem-
perature.
HEAT ANTICIPATION ADJUSTMENT
FIGURE 5 ANTICIPATOR ADJUSTMENT
Move this lever
Arrow points to the
matched current rating to adjust heat
of the primary control. anticipator.
Climate Technology Corp.
2500 Frisco Avenue
Memphis, TN 38114
A Hunter Fan Company
CALIBRATION
3. Remove thermostat cover. Slip 7/32"
wrench onto hex nut beneath bimetal.
While holding temperature adjust-
ment lever stationary, turn hex nut
clockwise until mercury shifts to the
right end of the tube for Heating
models. Left end of tube for Cooling
models.
4. Move temperature adjustment lever to
lowest setting.
5. Replace thermostat cover. Wait 10
minutes for bimetal temperature to
stabilize. Do not stand near the
thermostat during this period, as your
breath and body heat will affect
bimetal temperature.
6. Move temperature adjustment lever to
correspond to actual room tempera-
ture. Then remove thermostat cover.
7. Slip 7/32" wrench onto hex nut. While
holding temperature adjustment lever
stationary, turn hex nut counter-
clockwise until mercury just barely
shifts to the left end of the tube for
Heating models. Right end of tube for
Cooling models.
8. Replace thermostat cover and set
temperature adjustment lever to
desired temperature. Turn on electrical
power to system.
Some heating installations require longer
or shorter "ON", "OFF" periods to
maintain even temperatures. For average
conditions, set the heat anticipator
indicator to match the current rating of
the primary heating control. Move
indicator approximately 1/2 division in
direction indicated by the arrows on the
thermostat for longer "ON" cycles, or
move lever in opposite direction for
shorter "ON" cycles. Allow at least 24
hours to determine if setting provides
satisfactory operation before making any
further adjustments.
NOTE: Cooling anticipation is fixed, and
cannot be adjusted.
TECHNOLOGY
CORPORATION
CTC thermostats regulate 24 to 30 VAC single-stage heating-cooling systems. See the
chart below for specific models and applications.
THERMOSTAT MODELS AND APPLICATIONS
PART NUMBER
43309
43320
• Slotted Screwdriver
• Hammer
ELECTRICAL DATA
Switch Rating: 24 VAC (30 VAC max.)
Heating Models – 0.2 to 1.2 amps
Cooling Models– 0-1.5 amps
Switch Action: Sealed mercury switch
Anticipator Rating:
Heating Models – Adjustable from 0.2
to 1.2 amps
Cooling Models – Fixed 24 VAC
THERMAL DATA
Temperature Range: 50˚F – 90˚F (10˚C – 32˚C)
WARNING!

DISPOSAL INFORMATION

This product contains mercury
in a sealed tube. DO NOT place
this control in the trash at the
end of its useful life.
If this product is replacing a control that
contains mercury, DO NOT place the old
product in the trash.
Contact your local waste management
authority for instructions regarding
recycling and the proper disposal of this
product, or of and for any old control
containing mercury in a sealed tube.
41660-01 9/9/03
M E R C U R Y
MECHANICAL
THERMOSTAT
CLIMATE
APPLICATION
Use in standard 2-wire heating systems
Use in standard 2-wire cooling systems
TOOLS NEEDED FOR INSTALLATION
• Electric Drill and 3/16" Bit
• Level

SPECIFICATIONS

APPLICATIONS
This thermostat is designed for use with:
• Standard heating or cooling systems
• Electric heating systems
• Millivolt systems
This thermostat cannot be used with:
• Two-transformer systems
• Multi-stage applications
To avoid electrical shock or equipment damage,
make sure power is disconnected before installation.
When installing this product:
• Read these instructions thoroughly.
Failure to follow them could damage
the product or produce an unsafe
condition.
• Check the ratings in these instructions
and on the product to make sure the
product is compatible with your
application.
• Installation must be performed by a
trained, experienced service technician.
• Upon completion of the installation,
verify the correct operation of the
product as detailed in these instruc-
tions.
B U L B
ORIENTATION
Horizontal
Vertical
INSTALLATION