Danfoss KP 1W Pressure Switch Installation Guide
- June 3, 2024
- Danfoss
Table of Contents
Danfoss KP 1W Pressure Switch
Pressure switch
KP 1, KP 1W, KP 1A, KP 2, KP 4, KP 5, KP 5A, KP 6W, KP 6B, KP 6S, KP 6AW, KP 6AB, KP 6AS, KP 7W, KP 7B, KP 7S
Refrigerants
R22, R134a, R404A, R407A, R407C, R407F, R410A*) R422B, R422D, R448A, R449A, R452A, R507A, R513A, R717**)
For complete list of approved refrigerants, go to: http://products.danfoss.com/all-products/
- only for KP 6W, KP 6B, KP 6S, KP 6AW, KP 6AB, KP 6AS
- only for KP 1A, KP 5A, KP 6AW, KP 6AB, KP6 AS
Ambient temperatures / Mounting requirements
- -40 – 65 °C
- -25 – 65 °C (PED approved units)
- Relative humidity RH: 30 – 98%
- Vibrations resistance: 4 g (10 – 1000 Hz)
Connections
Connections for KP 1A, KP 5A, KP 6AS
Test pressure (Ptest) PS/MWP
Ptestmax
- KP 1, KP 2: 20 bar pe (285 psig)
- KP 2: 12 bar pe (174 psig)
- KP 4: 24 bar pe (343 psig)
- KP 5, KP 7: 35 bar pe (510 psig)
- KP 6: 46,5 bar pe (675 psig)
- PS/MWP
- (Maximum Working Pressure)
Mounting
Enclosure
CAUTION: Disconnect power supply before wiring connections are made or service to avoid possible electrical shock or damage to equipment. Do never touch live parts with your fingers or with any tool.
- Contact 1-4 opens on pressure drop
- KP 1, KP 2, KP 4
AC 1: 16 A| | DC 13|
---|---|---|---
AC 3: 16 A|
400 V a.c.| 12 W|
| 220 V|
AC 15: 10 A|
Short circuit protection: Fuse 16 Amp.
- Contact 1-4 opens on pressure drop
- KP 1W, KP 1 manual reset
When used acc. to UL regulations
Listed refrigeration controller 61B5
Use copper wire only. Tightening torque 20 lb. in.
- Contact 1-2 opens on pressure rise
- KP 5, KP 5A, KP 6, KP 6A, KP 7
Manual trip function
Automatic reset
Manual reset
| Type | Differential |
|---|---|
| KP 1, KP 1A | 0.7 bar (10 psi) |
| KP 5, KP 5A | 3 bar (43 psi) |
| KP 6B, KP 6S, KP 6AB, KP 6AS, KP 7B, KP 7S |
4 bar (58 psi)
Adjustment
CAUTION: Only for selected A2L refrigerants: R455A, R454C, R1234yf, R1234yz, R1234ze. For complete list of approved A2L refrigerants, go to http://products.danfoss.com/all-products/
Electrical rating
- AC-3: 16 A / 250 V AC
- AC-15: 10 A / 250 V AC
Voltage| Current range| Power factor
(cos phi)
| Frequency
---|---|---|---
250V AC| ≤ 4.0 A| PF ≥ 0,400| 50Hz/60Hz
250V AC| > 4.0 to 6.0 A| PF ≥ 0,594| 50Hz/60Hz
250V AC| > 6.0 to 16,0 A| PF ≥ 0,780| 50Hz/60Hz
IMPORTANT NOTICE
Safety requirements
- KP pressure switches shall only be employed in the units/systems which comply with the requirements for charge limits and requirements for avoiding ignition sources of IEC 60335-2-24, IEC 60335-2-40, IEC 60335-2-89, ISO 5149, EN378-1 or equivalent.
- Applying the overload on the KPs must be prevented. If by any chance it was damaged, the system / unit shall be stopped and KP shall be replaced as necessary.
- Electrostatic discharge protection and Electrical leakage protection shall be surely implemented by grounding or other measures.
- Only trained personnel are authorized to handle flammable refrigerants systems and may do the installation, maintenance and exchange of the switch by using appropriate tools.
- It is recommended to regularly check the function of KP switch.
- KP pressure switches must be installed in an area with a low risk of mechanical damage.
- Corrosion protection of KP pressure switches must be taken into account when used in a corrosive environment.
- Cables shall not be in contact with sharp edges. The cables shall be connected with adequate stress relieve in order to prevent that pulling forces can be carried thorough the cable to the terminal.
- In the event of pressure pulsation in the system, where switch is connected, these must be effectively dumped to prevent failure of the bellows. The cycle frequency of KP switch shall be kept as low as possible.
- The KP switches shall not be installed in places where high level of vibration is present.
Disclaimer
The user is responsible for ensuring that third parties also comply with this Notice, e.g. in case that the KP switches are supplied to third parties, and e.g. that all installation guides are available with the KP switches during installation. It is required that all conditions of this guide are being met and secured when using KP pressure switches. Danfoss shall not be responsible for any kind of direct and indirect or consequential damage or loss, including, but not limited to, loss of property, production, loss of profit, human injury arising out of the explosion or fire caused by the flammable nature of refrigerant.
© Danfoss Climate Solutions
2022.06