EarthLinked HCM-4272C Manuale di installazione - Pagina 10
Sfoglia online o scarica il pdf Manuale di installazione per Sistema idrico EarthLinked HCM-4272C. EarthLinked HCM-4272C 11. Hybrid cooling module
Stampa la paginaInstallation - Fan Speed Control
The Hybrid Cooling Module (HCM) is equipped with a variable fan speed control that varies the
speed of the fan as a direct function of the system condensing pressure. When the system is
operating in cooling mode and the compressor unit turns on, the Hybrid Cooling Module fan
speed will increase as condensing pressure increases. The fan will reach full speed at the factory-
set condensing pressure.
The system pressure setting and associated condensing temperature for full speed fan has been
factory-set and is shown in Figure 6.
Factory Setting for
Full Speed Fan
Condensing
Pressure,
psig
448
Figure 6.
If it is necessary to adjust the full speed fan pressure setting in the field, the Hybrid Cooling Module
pressure control may be adjusted by accessing it through the HCM control panel cover.
Be sure that the Hybrid Cooling Module disconnect is OFF prior to removing
the control panel cover.
With the control panel cover removed, the pressure control will appear as it does in the left view of
Figure 7. After removing the sealing plug, the 5/64" Allen key is inserted into the setting screw to
adjust the pressure level and associated condensing temperature for full speed fan operation.
Figure 6 indicates the change in full speed fan pressure and condensing temperature for each
¼ turn of the setting screw.
CLOCKWISE rotation of the setting screw INCREASES
temperature.
COUNTER-CLOCKWISE rotation of the setting screw REDUCES
condensing temperature.
HCM-410CP-IM (12/15)
Condensing
Setting Screw
Temperature,
Rotation
ºF
115
R-410A
Condensing Pressure and Temperature Information
IMPORTANT!
Field Adjustment Guide
Condensing
Pressure
Change, psig
1/4 Turn
~12
full speed fan pressure and condensing
(per ¼ Turn)
Condensing
Temperature
Change,
ºF
~2
full speed fan pressure and
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