KMC Controls CTE-3007 User Manual
Low Limit Controllers, SPDT
Installation Guide
CTE-3006/3007
Mounting
The controller can be mounted in any position,
but avoid locations subject to excessive vibration.
For manual reset models, position the controller to
permit convenient access to the reset buon.
1. Loosen the front screw and remove the cover.
2. Using the two 3/8" mounting keyholes, mount
the case ush against the duct work or any at
surface.
3. Install the sensing capillary in a horizontal
serpentine fashion across the downstream side of
a water coil.
4. Using HMO-4523 capillary clips (ordered
separately), support the sensing capillary
at sucient points to prevent damage from
vibration and/or air movement.
CAUTION
Do not kink or apply excessive force to the capillary
element.
5. Make the appropriate connections to the terminal
blocks. (See the Wiring section.)
Wiring
An opening for installing a connector for 1/2" conduit
is provided in the boom of the case.
All wiring should comply with national and local
electrical codes. Using 10 to 14 AWG solid copper
wire is recommended.
Strip wire ends 3/8", insert the wire ends under
the cup washers on the switch block, and securely
retighten terminal screws. Wire terminals according
to the Actuation and Reset section on the next page.
CTE-3016/3017/3026/3027 1 Installation Guide
Actuation and Reset
Terminal 1 is the “common” terminal, 4 is NC
(above setpoint), and 2 is NO. When the sensed
temperature falls below setpoint, connection “1–4”
opens and connection “1–2” closes (see diagram
below). The switch latches in this position until the
sensed temperature rises 5° F (3° C) above setpoint
and the controller is reset either (depending on the
model) automatically or manually by depressing the
reset buon located in the top of the controller case.
The controller cannot be manually reset until the
sensed temperature is at least 5° F (3° C) above
setpoint.
Common
Normally Open (Closes on Low Temp.)
Normally Closed (Opens on Low Temp.)
Setpoint Adjustment
The setpoint is the temperature at which connection
“1–4” opens as the unit senses a fall in temperature.
To adjust the setpoint:
• Turn the range adjustment screw CW to decrease
the setpoint.
• Turn the range adjustment screw CCW to
increase the setpoint.
Specifications
Range 35 to 68° F (1.7 to 20° C)
Dierential 4.5° F xed (2.5° C)
Switch Action SPDT, snap-acting
Element
Electrical Ratings
Inductive 24 FLA (Full Load Amperes)
144 LRA (Locked Rotor
2 HP @ 120 VAC, 3 HP @ 240
Pilot Duty 720 VA max. @ 120 to 600 VAC,
Approvals CUL US Listed, CE Compliant,
Weight 1.0 lbs. (0.45 kg)
Materials Plated steel case, plastic cover
Mounting Surface mount with capillary
Temperature Limits
Operating –60 to 160° F (–51 to 71° C)
Shipping –60 to 160° F (–51 to 71° C)
3/32" (2.4 mm) diameter,
20-foot (607 cm) length,
vapor-lled, tin-plated copper
capillary, max. temperature
300° F (149° C)
@ 120/240 VAC
Amperes) @ 120/240 VAC
VAC
144 VA max. @ 24 VAC
RoHs compliant
installed in horizontal serpentine paern
Testing
A manual test lever located under the cover (below
the indicator) allows the unit to be manually actuated (with a screwdriver) during system tests.
Accessories
HMO-4523 Capillary Clip (ordering about 5
clips per unit is recommended)
Maintenance
No routine maintenance is required. Each component is designed for dependable, long-term reliability, and performance. Careful installation will also
ensure long-term reliability and performance.
NOTE: See the CTE-3006/3007 Data Sheet (717-035-
24) for more information.
Important Notices
The material in this document is for information
purposes only. The contents and the product it
describes are subject to change without notice. KMC
Controls, Inc. makes no representations or warranties with respect to this document. In no event shall
KMC Controls, Inc. be liable for any damages, direct
or incidental, arising out of or related to the use of
this document.
KMC Controls, Inc.
19476 Industrial Drive
New Paris, IN 46553
574.831.5250
www.kmccontrols.com; info@kmccontrols.com
© 2010 KMC Controls, Inc. 717-019-24B
CTE-3016/3017/3026/3027 2 Installation Guide
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