Danfoss Pressure controls Service guide

Fitter notes	Pressure controls
Contents				Page
	Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
	Placing of surplus capillary tube . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . .	.	.	22
	Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . . . . . . . . . . .	. .	. .	. 22
	Low-pressure control . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . .	.	.	. 22
	High-pressure control . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . .	.	.	22
	Example with four compressors in parallel (R404A) . . . . . . . . . . .	. . . . . . . . .	.	.	23
	Setting LP for outdoor location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
	Indicative evaporating pressures (pe) for different types of systems . . . . .	. . . . . . . . .	.	.	23
	Test of contact function . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . . .	.	.	24
	The correct pressure control for your system . . . . . . . . . . . . . . . .	. . . . . . . . .	.	.	25
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© Danfoss A/S (AC-DSL/MWA), 10 - 2006

DKRCC.PF.000.G1.02 / 520H1459

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Notes

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DKRCC.PF.000.G1.02 / 520H1459

© Danfoss A/S (AC-DSL/MWA), 10 - 2006

Fitter notes	Pressure controls
Installation	Mount the KP pressure control on a bracket or on
	a completely flat surface.
	The pressure control can also be mounted on the
	compressor itself.
	In unfavourable conditions, an angle bracket
	could amplify vibration in the mounting plane.
	Therefore, always use a wall bracket where strong
	vibration occurs.

Al0_0001

	If the risk of water droplets or water spray is
	present, the accompanying top plate should be
	used. The plate increases the grade of enclosure
	to IP 44 and is suitable for all KP pressure controls.
	To obtain IP 44, the holes in the backplate of the
	control must be covered by mounting on either
	an angle bracket (060-105666) or a wall plate
	(060-105566).
	The top plate is supplied with all units incor-
	porating automatic reset. It can also be used on
	units with manual reset, but in that case must
	be purchased separately (code no.: for single unit,
	060-109766; for dual unit, 060-109866).
	If the unit is to be used in dirty conditions or
		Al0_0007
	where it might be exposed to heavy spray -
	from above or from the side - it should be fitted
	with a protective cap. The cap can be used
	together with either an angle bracket or a wall
	bracket.

Al0_0008

If the unit risk being exposed to heavy water influence a better grade of enclosure can be achieved when mounting the product in a special IP 55 enclosure.

The IP 55 enclosure is available for both single unit (060-033066) and dual unit (060-035066).

Ak0_0020

<![if ! IE]> <![endif]>controls Pressure

© Danfoss A/S (AC-DSL/MWA), 10 - 2006

DKRCC.PF.000.G1.02 / 520H1459

21