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Closed Loop <br />Coolant System <br />(Customer -Provided) <br />Terminate cooling water supply and return <br />lines in the rear wall behind the stand with <br />1 (25) Female NPT valves and plugs. <br />The customer will make the final connection <br />to the Stand using a Varian -provided hose <br />kit during installation. <br />Provide a 1 If pressure regulator <br />on the supply line to control the <br />incoming external coolant pressure. <br />If installed on a "closed -loop" <br />system coordinate the pressure <br />setting with the chiller manufacturer <br />(NOT to exceed 100 PSI). <br />City Water Back -Up Supply <br />"One -Pass" <br />Supply <br />J <br />Return <br />(11,� <br />Return Drain <br />Provide a flow meter on <br />the supply or return line <br />in an accessible location <br />near the vault. <br />Provide shut-off valves <br />on the supply and return <br />coolant lines in an accessible <br />location outside the vault. <br />Outline of <br />Stand <br />Internal heat <br />exchanger <br />The bypass shut-off valve is located <br />in the Stand. This valve is to be open <br />to provide constant flow on a "Closed -Loop" <br />coolant system and should be closed while <br />on City Water Back -Up "One -Pass" system. <br />TrueBeam Coolant System Diaaram <br />Internal <br />cooling loop <br />TrueBeam Stand <br />CHILLED WATER REQUIREMENT TO COOL THE ACCELERATOR: 3 to 6 <br />GALLONS/MINUTE @ 50' to 75' F. <br />DESIGN THE SYSTEM TO ELIMINATE CONDENSATION ON THE <br />PIPING. CONSULT A PSYCHROMETRIC CHART TO DETERMINE THE <br />DEW POINT IN THE FACILITY. EQUIPMENT DAMAGE COULD RESULT <br />IF THE INLET COOLING TEMPERATURE IS AT OR BELOW THIS DEW <br />POINT. <br />18 <br />u <br />{ <br />16 <br />14 <br />a <br />12 <br />z <br />10 <br />z <br />O 8 <br />6 <br />4 <br />2 <br />s <br />0 <br />350 400 450 500 550 600 650 700 750 800 850 900 <br />INPUT COOLANT TEMPERATURE (Degrees in Fahrenheit) <br />FOR THE COMPLETE COOLING WATER AND HVAC SPECIFICATION - <br />SEE THE DESIGNER'S DESK REFERENCE, SECTION 3.6 <br />Coolant Flow RequIS <br />irement <br />65' F. 0 4 GPM <br />Coolant Flow (18- C. 0 15 LPM) <br />Glycol Content (Coolant) Not to Exceed 50% <br />Not Required for TrueBeam, <br />Compressed Air recommend keeping if <br />existing, relocate with water <br />lines <br />Room Temperature 70° F. (21- C.) <br />Room Humidity 50% Relative Humidity, <br />Non —Condensing <br />2-1 Control Cabinet 11.1 kW (3,770 Btu/hr) I <br />Minimum Heat Load <br />2 kW (6,830 Btu/hr) <br />Maximum Heat Load (Beam —On) <br />25 kW (85,379 Btu/hr) <br />Maximum Input Pressure <br />2 <br />100 PSIG (7 kg/cm ) <br />(including normal back pressure) <br />The Pressure Differential between <br />2 <br />10 PSI (0.7 kg/cm2) and <br />the inlet and outlet fittings in the <br />g <br />20 PSI (1.4 kg/cm) 0 <br />Stand will be adjusted in the Ready <br />3.0-5.0 GPM (11.4-18.9 LPM) <br />State between <br />The Pressure Drop through the <br />24 PSI (1.7 kg/cm2) <br />TrueBeam under Maximum Heat Load <br />Average Water Temperature Rise <br />27- F. (15- C.) <br />(w/closed bypass valve) <br />