Danfoss KPU 19 Thermostat Installation Guide

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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  

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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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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• Danfoss

Danfoss KPU 19 Thermostat Installation Guide Overview

Summary of Contents

• Page 1: Installation guide for KPU 19 thermostat outlines its application in temperature regulation for various systems. KPU 19 thermostats are used for refrigeration, freezing, air conditioning, ventilating, and heating systems. The thermostat is fitted with SPDT or SPST contact systems. It is designed solely for temperature regulating control, with the installer responsible for additional safety controls. The standard enclosure is rated NEMA ~ 1, achieved when mounted on a flat surface with unused holes covered. Product specifications include regulating differential, capillary tube length, and contact type. The KPU 19 model has a temperature range of -30 to 80 °F and a maximum bulb ambient temperature of 140 °F. Different models include variations in contact type and reset type. Dimensions and mounting details are provided for proper installation. The document includes specific codes for different KPU 19 models.
• Page 2: Installation Select an accessible location for the thermostat to avoid damage. Mount the KPU 19 on a bracket or flat surface to ensure proper operation. Use only the provided mounting holes and avoid making additional holes. Fastening at position “B” may cause housing deformation and malfunction. The thermostat and sensing bulb can be mounted in any position. Fast changes in measured temperature will cause lag in thermostat readings. Install the thermostat where harmful environmental conditions are minimized. Avoid denting or deforming the bulb to prevent damage. Protect the capillary tube from vibration and damage. Wiring All wiring should conform to the National Electrical Code and local regulations. Use only copper wire and the terminal screws furnished in the terminal block. Disconnect the power supply before making any wiring connections. Do not exceed the thermostat’s specified electrical ratings. The terminal block and grounding screw are accessible after removing the front cover.
• Page 3: Wiring options For cooling unit For heating unit Cut-out on temperature decrease Cut-out on temperature increase Contact function Example for application and wiring Adjustment Determination of differential Adjust the thermostat to settings specified by the manufacturer of the controlled equipment.
• Page 4: Setting example (SPDT type) Set at 41 °F for temp. decrease and 50 °F for temp. increase. Upper Switch Point (USP): 50 °F Lower Switch Point (LSP): 41 °F Differential of 9 °F is equivalent to the indication 4 set on the Differential Adjustment Knob. Enclosed accessories include a sensor clamp for bulb fastening and a blinding sticker to cover the hole after dial knob removal. After setting, install the cover and supply power for checking the actual switching points. Calculate the differential between USP and LSP (Differential = USP – LSP; 50 °F - 41 °F = 9 °F). Scale values are indicative only. It is often necessary to use a thermometer when setting working points.