Danfoss KP 15 Pressure Switch and Combustion Controls Installation Guide

Danfoss KP 15 Pressure Switch and Combustion Controls

Refrigerants:
R22, R134a, R404A, R407A, R407C, R407F, R422B, R422D, R448A, R449A, R450A, R452A, R507A, R513A
For complete list of approved refrigerants, go to http://products.danfoss.com /all-products/

CAUTION:
Do not install these controls on ammonia systems.

Ambient temperatures / Mounting requirements

t1 min.: -40 °F (-40 °C)
– 1 3 °F (- 25 °C) (PED approved products)
t1 max.: 149 °F ( 65 °C)

Test pressure (Ptest)

Enclosure

Connections

Assembly

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.

Wiring

All wiring should conform to the National Electrical Code and local regulations.

SPDT
Controls with low pressure (LP) signal

Terminal block

CAUTION:
Use terminal screws furnished
in the contact block.
Use tightening torque 20 lb. in (2.3 Nm).
Use copper wire only.

Low pressure (LP) side:
A-C close on LP rise
A-C open on LP drop

High pressure (HP) side:
A-C open on HP rise
A-C close on HP drop

LP signal option:
A-B close on LP drop
See label for current wiring inside cover.

Controls with low pressure (LP) and high pressure (HP) signal)

Terminal block

CAUTION:
Use terminal screws furnished in the contact block.
Use tightening torque 20 lb. in (2.3 Nm).
Use copper wire only.

Low pressure (LP) side:
A-C close on LP rise
A-C open on LP drop

High pressure (HP) side:
A-C open on HP rise
A-C close on HP drop

LP signal option:
A-B close on LP drop

HP signal option:
A-D close on HP rise

Contact load ratings

See label inside cover

Function

Manual tripping

(Electrical contacts/wiring test)

LP side

HP side

Note:
On controls with LP and/or HP man. reset, push corresponding LP and/or HP man. reset knob during tripping.

Manual reset

To resume control operation after safety cut-out, push man. reset knob as indicated.

Note:
LP man. reset is possible only after system pressure has risen above cut-in value.
HP man. reset is possible only after system pressure has dropped below cut-out value.

Convertible reset
Insert a screwdriver into the slot on the lock disc and turn it to desired reset configuration. Do not turn the screw on the lock disc as it may damage the convertible reset mechanism.

Reset options

Note:
Do not select automatic reset if safety of the system requires manual reset.

Note:
Selected reset configuration may be protected against unauthorized actions applying a seal.

Adjustment spindle(s) location

Setting

Low pressure (LP) side setting

High pressure (HP) side setting

Adjustment

Note:
Remove lockplate before adjustment. Replace lockplate after adjustment (if desired).

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