Alpha Technologies Radium MiniBay - Manual (Page 20)

20 044-001-C0-00, Rev. C
1.0 Overview and Specifications, continued
1.4
Enclosure Cooling Options, continued
Air Conditioner Door, 24VDC, right or left hinged: Alpha P/N 745-204-52 (R) or 745-204-53 (L)
• Cooling Capacity 878W dissipated at 4ºC outdoor ambient and maximum internal ambient temperature
of 40ºC.
• Variable speed compressor temperature control and low voltage disconnect. Adjustable enclosure
temperature set point jumper factory set to 25ºC.
• Two Form C dry contact alarms (Minor: High condensing temp and/or enclosure over-temp, open on
alarm and Major: cooling system failed, open on alarm). See DC air conditioner operation section for
more details.
• Maximum power draw 500W.
Air Conditioner Door, 240VAC, right or left hinged: Alpha P/N 745-204-58 (R) or 745-204-59 (L)
• Cooling capacity 1464W dissipated at 4ºC outdoor ambient and maximum internal ambient of 40ºC.
• Digital display with programmable set points.
• Included adjustable enclosure over-temp alarm (Alpha P/N 745-338-20).
• Form C dry contact, open on alarm. Factory setting is 40ºC. See AC air conditioner operation section for
more details.
• Maximum power draw 989W.
1.5 Enclosure Heating Options
Heater, 450W, 48VDC: Alpha P/N 745-588-22 or 745-588-21
• PCBA thermistor temperature control and low voltage disconnect.
• Heater turns on when enclosure temperature drops below 6ºC.
• Functional test button.
• Model 745-588-22 includes 20A circuit breaker.
• Model 745-588-21 does not include circuit breaker, but has a piggyback connector that allows it to share
input power from the DC air conditioner 20A circuit breaker.
Heater,450W, 120VAC: Alpha P/N 745-589-21
Line cord with bimetal thermostat control. Thermostat set point is fixed to close at 4ºC and open at 15ºC.
Plugs into GFCI outlet.
Air Conditioner Door, 48VDC, right or left hinged: Alpha P/N 745-204-50 (R) or 745-204-51 (L)
• Cooling capacity 878W dissipated at 4ºC outdoor ambient and maximum internal ambient temperature
of 40ºC.
• Variable speed compressor temperature control and low voltage disconnect.
• Adjustable enclosure temperature set point jumper, factory set to 25ºC.
• Two Form C dry contact alarms (Minor: High condensing temp and/or enclosure over-temp, open on
alarm and Major: cooling system failed, open on alarm). See DC air conditioner operation section for
details.
• Maximum power draw 500W.