Danfoss KPU 19 Thermostat Installation Guide
Installation Guide
Thermostat
Type KPU 19
Application
Thermostat bulb types
KPU 19 thermostats are used for
temperature regulation in refrigeration,
freezing, air conditioning, ventilating
and heating systems.
Remote bulb
Air coil/room sensor
Important
KPU 19 thermostats are fitted with
Single-Pole Double-Throw (SPDT)
or Single-Pole Single-Throw (SPST)
contact system.
The KPU 19 thermostat is designed
only for use as a temperature
regulating operating control. It is
the responsibility of the installer
to verify that other necessary
safety controls are installed and
functioning properly as intended
by the original equipment
The standard KPU 19 enclosure is rated
NEMA ~ 1.
NEMA ~ 1 is obtained when the
thermostat is mounted on a flat surface
with all unused holes covered.
manufacturer or system design.
Product specification
Regulating
Differential
Capillary
tube length temperature temperature
Max. bulb
Ambient
Bulb size
Contact
type
Reset
type
range
[°F]
Type
Code no.
∆T [°F]
[in.]
x 4 1/2
[in.]
[°F]
[°F]
3
KPU 19
KPU 19
-30 – 80
3.6 – 12.6
/
120
140
SPDT
Auto.
Auto.
060L2150
060L2151
-31 – 140
8
8
SPST (close
on temp. rise)
3
-30 – 80
-30 – 80
3.6 – 12.6
3.6 – 12.6
/
x 4 1/2
80
140
140
-31 – 140
-31 – 140
Air coil /
Room sensor
KPU 19
-
SPDT
Auto.
060L2152
Dimensions [in.]
Cover
Scale Plate
Mounting Hole
0.63 0.59
DIFF.
Diff. Adjusting
Knob
0.14
Terminal Screw
Capillary Tube
0.27
Grounding Screw
1.7
Conduit Rubber
2.12
DKRCC.PI.CA0.F2.22 | 1
© Danfoss | DCS (az) | 2018.10
| General | Details |
|---|---|
| Name | Danfoss KPU 19 Thermostat Installation Guide |
| Make | Danfoss |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.78 MB |

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Danfoss KPU 19 Manual: Questions and Answers
Can I mount a thermostat bulb directly on a cold wall?
No. Mount the unit on an insulating plate instead to avoid incorrect operation. Installation Guide, p. 2
Where is the terminal block on the Danfoss KPU?
Behind the front cover. Remove the cover to access it. Installation Guide, p. 2
How do I secure the capillary tube on a Danfoss KPU 19?
Protect the tube from vibration and damage by proper routing and securing.
- When mounted directly on the compressor, secure the capillary tube to the compressor so both vibrate together.
- For other mounting, form surplus capillary tube into a loose loop and secure it to the mounting base.
- Leave slack in the tube to help dampen vibration.
- Avoid sharp bends with radius of 1/2 inch or less.
- Do not bend the tube within 1.75 inches from the soldering point at the bulb. Installation Guide, p. 2
















