Operation diagram DO DEH OS EPRH OT Supply Room Air Extract Room Air Exhaust Air Outdoor Air DPS DPS DFSE BFS EHS WPSH HT WPR WV SS FPS WVA EPSH FPS OT HT RC UC BAE BFE ETS PTE US ERW BAS DFSS BAE BAS BFE BFS CC* DEH* DO* DFSE DFSS DPS2 Blower Assembly Exhaust Blower Assembly Supply Bag Filter Extract Bag Filter Supply Cooling Coil Damper Exhaust Air, motorized Damper Outdoor Air, motorized Dirty Filter Sensor Extract Dirty Filter Sensor Supply Duct Pressure Sensor RM US4 EPRH EPSH ERW EHS ETS FPS HT OT OS3 WRS PTS Unit Mounted Sensor Electric PRe-Heater Electric PoSt-Heater Energy Recovery Wheel Exhaust Temperature Sensor Extract Temperature Sensor Frost Protection Sensor Heater Thermostat Overheating Thermostat Outdoor Temperature Sensor RC Rotation Control RM Rotating Motor PTE1 Pressure Transmitter Exhaust Pressure Transmitter Supply PTS1 Supply Temperature Sensor SS Unit Control UC Water Pre-Heater WPR* Water Post-Heater WPSH Wheel Rotation Sensor WRS Water Valve WV* Water Valve Actuator WVA* * an additional accessory 1 an option for CAV Version 2 an option for VAV Version 3 comes with pre-heater accessories EPRH and WPR 4 acts as outdoor air sensor when no pre-heater is equiped and as extra unit sensor in units with pre-heater accessories EPRH ot WPR.
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