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READ BEFORE STARTING INSTALLATION
Each truck chassis is built differently and will require a different installation method.
Review the placement of ALL parts and components
before beginning the installation process.
Step One
Page1
APU
Fuel Supply
And Return
Vehicle Fuel Tank
HVAC
120 VAC Receptacle Panel
Condenser
Driver Control Panel
Parts and Tools Required
• Radiator hose – 3/4”
• Radiator shut off valves
• Radiator hose clamps
• An assortment of nuts, bolts, and
washers as required
• An assortment of electrical connectors
and protective conduit as required
• Heat shrink, pipe sealant, never seize,
electrical tape, expanding foam
• Torque wrench (100ft/lb)
• Hole saw kit (1”,1 _”, 3”, 3 _”, 4 _”)
• Portable lighting
• Hand forklift/lifting device
• Step drill
• Angle drill
• Reciprocating saw
• Nutsert ® installation tool
• Scale (refrigerant) accurate to ounces
• Gauges (refrigerant) 134A compatible
• Diamond Test Switch Module PG1008
• Flow Meter TK 9002
APU Parts and Components
Parts List:
APU 1
APU Installation Kit 1
Frame locks 4
_” x 6 _” Bolts 4
_” Split Lock Washers 8
_” lock nuts 4
Frame Washers 2
Fuel Pick-up Kit 1
Pick-up 1
Clamps 2
Exhaust Extension Kit 1
90 Degree exhaust pipe 1
Support bracket 1
Exhaust clamps 2
5/16” NC bolt 1
5/16” Washers 2
5/16” Lock Nuts 2
NOTE: The APU requires periodic maintenance. Ensure you have access to internal components (i.e. oil filter, air filter,
fuel filter and oil filter). The Diamond comes filled with long life coolant. Consult the truck owner prior to altering the vehicle in any way.
CAUTION: Trucks with longer chassis should have the APU mounted closer to the sleeper unit to avoid obstacles such as
railway crossings, speed bumps, curbs, etc. Before beginning installation of the Diamond system, disconnect the vehicle’s batteries.
If truck is equipped with a coolant valve, valve must be fully opened before starting APU.
Battery Terminal Kit 1
Red heat shrink 1
Black heat shrink 1
Ring terminals 2
Cable ties 75
Condenser 1
Hoses 2
Mounting hardware 1
Harness 1
HVAC 1
Driver Control Panel 1
Power Outlet 1
DCP (Driver Control Panel)
HVAC
CONDENSER
APU