Diamond Power Systems Auxiliary Power Units April, 2008
Diamond Power APU
APU with access panels open
Driver’s Control Panel
HVAC Unit
HVAC Unit (open)
AC Condenser
APU Mounted on Frame Rail
HVAC Mounted Under Sleeper
Condenser Mounted Behind Sleeper
Driver’s Control Panel Mounted in Sleeper
Detail of Frame Rail Mounting
Specifications APU Specification Engine14.0 Hp, 2 Cylinder, Water cooled CoolingSelf-contained OR Truck Water Bore X Stroke2.64" X 2.68" Rated Power RPM Fuel Consumption0.15 G/Hr (19.2 Ounces/Hr) at idle, 0.5 G/Hr (64 Ounces/Hr) at full speed Exhaust Temp860°F Engine Oil0.793G/3.0L You can use any API Service CF, CF-4, CG-4 or CH-4 oil Valve Clearance0.2~0.3mm Engine Compression300 psi (2.0 MPa) Starter160 Cranking Amps
Specifications (continued) Noise Level (dB)70 dB Alternator60 12 V DC Generator35 120V AC Oil Pressure Switch7.1~142.2 psi (0.5~10kgf/cm2) Overheat SwitchOpens at 203°F Intake & Ex. Valves "~0.0073" (0.145~0.185mm) Belt Tension Alternator: 45~55 ft-lb (61~75 N-M) Generator: 70~80 ft-lb (95~108 N-M) Thermostat Starts to open at 160°F and fully open at 185°F Weight Engine APU Dimensions 26" L X 21" D X 29" H
Specifications (continued) HVAC Specification Air Conditioning10,000 BTU/hr System capacity64~68 oz of R-134A System oil capacity14 oz of PVE (Polyvinylether) Compressor6~10 120V Condenser Fan9~12 Amp Binary Pressure SwitchNormally closed between 26~335 psi Operating PressuresLow side 24~45 psi, High side 110~250 psi Heat5000/10000 BTU/hr (Low/High) Speed Resister25 Ohms Heating Coils10 Ohms each Thermo FuseBlows at 307.4°F (152°C) Weight100lb Dimensions (Whole HVAC) 28" L X 15" D X 12.5" H
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