The heating coil assembly connects to high-temperature heating water supply and return lines featuring a 2-way control valve with a 0-10 volt analog output and a calibrated balancing valve. Typical unions and shut-off valves are included for maintenance access, alongside pressure and temperature test plugs. A 3/8-inch manual air vent is provided at the high point, and a 3/4-inch manual drain with a hose connection and cap is installed at the low point. Strainers include a blowdown valve with a matching hose connection and cap. Piping is arranged to maintain required service clearances.
CV 0-10 VOLTS AO NOTES: 1. ALL STRAINERS ARE TO HAVE BLOWDOWN VALVE AND HOSE CONNECTION. 2. ALL COIL DRAIN VALVES ARE TO HAVE HOSE CONNECTION. 3. PROVIDE MANUAL AIR VENTS AT HIGH POINTS. 4. PROVIDE DRAINS AT LOW POINTS. P&T TEST PLUG (TYP.) MAV ARRANGE PIPING TO MAINTAIN REQUIRED SERVICE CLEARANCE 3/4" MANUAL DRAIN W/HOSE CONNECTION AND CAP. HHWR HHWS STRAINER BLOWDOWN WITH VALVE, HOSE CONNECTION, AND CAP, SAME SIZE AS BLOWDOWN. UNION (TYPICAL) 2-WAY CONTROL VALVE COIL CALIBRATED BALANCING VALVE (TYPICAL) SHUT OFF VALVE (TYP.) 3/8" MANUAL AIR VENT
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