SeaMach 24 VDC
Rooftop Air Conditioners
SeaMach 24 VDC Rooftop Air Conditioner Installation Manual 5/2013 Page 17 of 20
Parameter Description:
Cycled Fan:• When set for “Cycled”, the fan will operate on demand. When set for “Continuous”,
the fan will always operate when the system is in cool mode.
System Units:• Degrees Fahrenheit (°F) or degrees Celsius (°C) can be selected
Display Brightness:• Display brightness can be set from 4 to 15 to suit room lighting conditions.
Screen Saver Brightness:• If set for (0) then a single bar will blink sequentially in the four corners
of the display. Values from 1 to 8 can be set to suit room lighting conditions.
Temperature Calibration:• This parameter allows the user to calibrate the room air temperature
sensor. The room temperature will be displayed and can be adjusted +/-10 °F or +/-5°C
Staging Delay:• The compressor staging delay is provided for multi system installations. Set the
Staging delays at different intervals so only one compressor starts at a time when power is
applied.
De-Ice Time:• If the compressor runs continuously for longer than one hour, the compressor will
shut down and the blower will run for the specied time. The compressor will then restart and
resume operation.
Cycled Pump:• When set for “Cycled”, the pump will run on demand. When set for “Continuous”,
the pump will run continuously when the system is in cool mode.
Fan Speed 1-6:• These parameters are used to optimize fan performance and airow Speed 1
corresponds to the lowest speed setting. Speed 6 corresponds to the highest speed setting. Speeds
should be set to avoid system icing in humid environments.
Maximum Comp Current:• Thirty seconds after starting a cooling cycle the compressor current
will be limited to this value.
Compressor Speed Range:• The number of degrees from set point to maximum compressor
speed.
Reset Parameters:• To reset all parameters to factory defaults, select YES and then exit the program
mode by pressing the on / off button. The display will show “EEPROM RESET”, and then show
the room temperature in the off mode.
Programmable Parameters Table:
Description Default Value
Cycled fan Continuous Cycled or Continuous
System units °F °F or °C
Display brightness 15 4=Minimum 15=Maximum
Screen saver brightness 4 - and 1-8
Temperature calibration 0 Ambient +/- 10°F
Staging delay 15 5-135 Seconds
De-Ice time 2 1-5 Minutes
Cycled pump Cycled Cycled or Continuous
Fan A speed 1 30 30-90
Fan A speed 2 35 30-90
Fan A speed 3 40 30-90
Fan A speed 4 45 30-90
Fan A speed 5 55 30-90
Fan A speed 6 85 30-90
Compressor speed range 2 (1.1) 2-5 °F (1.1-2.8 °C)
Maximum comp current 35 Off, 10-60 Amps
Reset Parameters No No or Yes
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(20 Seiten)
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