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 dierent types of systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Test of contact function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
The correct pressure control for your system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Pressure controls
© Danfoss A/S (AC-DSL/MWA), 10 - 2006 DKRCC.PF.000.G1.02 / 520H1459 19
Notes
20 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 at 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.
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 incorporating 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
where it might be exposed to heavy spray -
from above or from the side - it should be tted
with a protective cap. The cap can be used
together with either an angle bracket or a wall
bracket.
Al0_0001
Al0_0007
Pressure controls
Al0_0008
If the unit risk being exposed to heavy water
inuence 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
© Danfoss A/S (AC-DSL/MWA), 10 - 2006 DKRCC.PF.000.G1.02 / 520H1459 21
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