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Hersteller: Greenheck Fan Dateigröße: 697.94 kb Dateiname: Unterrichtssprache:

EXHAUST DAMPER T2 ROTATION SENSOR TIMER T3 ROTATION SENSOR TIMER T4 ECONOMIZER WHEEL JOG TIMER TYPICAL SETTINGS t1(OFF) = 3 HRS., t2(ON) = 10 SEC. * EXHAUST FAN T5 EVAP DELAY OFF TIMER T6 COMPRESSOR MINIMUM OFF TIMER (TYP. 3 MIN.) T7 COMPRESSOR MINIMUM OFF TIMER (TYP. 3 MIN.) * TR TRANSFORMER SUPPLY DAMPER *TS1 FROST CONTROL THERMOSTAT (JUMPER - HEAT) CLOSES ON TEMP. DECREASE TYPICAL SETTING 5. F. TS2 ECONOMIZER LOW LIMIT THERMOSTAT (JUMPER - HEAT) OPENS ON TEMP. DECREASE TYP. SETTING 20. OFFSET OR 50.F. SUPPLY FAN TS3 ECONOMIZER UPPER LIMIT THERMOSTAT (JUMPER - HEAT) CLOSES ON TEMP. DECREASE TYP. SETTING 65. F./2. DIFF. TS4 ROOM OVERRIDE SENSOR TS5 INLET AIR POST HEATER LOCKOUT THERMOSTAT (AFTER WHEEL) ENERGY WHEEL CLOSES ON TEMP. DECREASE TYPICAL SETTING 65. F. TS6 INLET AIR COMPRESSOR LOCKOUT THERMOSTAT (JUMPER-HEAT) OPENS ON TEMP. DECREASE TYPICAL SETTING 60. F./2. DIFF. ROTATION SENSOR FACTORY SUPPLIED AND WIRED * o FIELD WIRED FIELD CONTROL WIRING RESISTANCE SHOULD NOT EXCEED 0.75 OHM. IF THERMOSTAT CONTROLLER(S) RESISTANCE EXCEEDS 0.75 OHM THEN CONSULT FACTORY. USE 14 GAUGE MINIMUM WIRE THICKNESS FOR CONTROL WIRING. REPLACEMENT FUSES: MUST HAVE A MINIMUM I.R. RATING OF 5 KA FROST CONTROL CAUTION: UNIT SHALL BE GROUND IN ACCORDANCE WITH N.E.C. POWER MUST BE OFF WHILE SERVICING. ECONOMIZER CONTROL TO FR AND FC USER INTERF USER INTERFUSER INTERFUSER INTERFUSER INTERFA AAAACE C CE CCE CCE CCE CO OOOONNECTIONS: NNECTIONS:NNECTIONS:NNECTIONS:NNECTIONS: ON VFD-W USER T USER TUSER TUSER TUSER TO OOOO VERIFY THA VERIFY THAVERIFY THAVERIFY THAVERIFY THAT TTTT TR1 CAN HANDLE THE V TR1 CAN HANDLE THE VTR1 CAN HANDLE THE VTR1 CAN HANDLE THE VTR1 CAN HANDLE THE VA AAAA L LLLLO OOOOAD OF INDICA AD OF INDICAAD OF INDICAAD OF INDICAAD OF INDICAT TTTTO OOOOR DEVICES. R DEVICES.R DEVICES.R DEVICES.R DEVICES. DIRT DIRTDIRTY FIL Y FILY FILTER INDICA TER INDICATER INDICAT TTOR SHOWN AS 24V POWER FROM UNIT OR SHOWN AS 24V POWER FROM UNITOR SHOWN AS 24V POWER FROM UNIT. .. PS2 NC CNO SUPPLY DIRTY R FILTER SWITCH C PS3 NC CNO EXHAUST DIRTY R FILTER SWITCH C C 6 FROST CONTROL INDICATOR ROTATION INDICATOR 12 C 18 Energy Recovery Ventilator Rotation Sensor The rotation sensor monitors energy recovery wheel rotation. If the wheel should stop rotating, the sensor will close a set of contacts in the unit control center. Field wiring of a light (or other alarm) between terminals R & 12 in the unit control center will notify maintenance personnel when a failure has occurred (refer to Remote Panel Wiring Schematics section for wiring details). Dirty Filter Sensor Dirty filter sensors monitor pressure drop across the outdoor air filters, exhaust air filters or both. If the pressure drop across the filters exceeds the set point, the sensor will close a set of contacts in the unit control center. Field wiring of a light (or other alarm) to these contacts will notify maintenance personnel when filters need to be replaced. The switch has not been set at the factory due to external system losses that will affect the switch. This switch will need minor field adjustments after the unit has been installed with all ductwork complete. The dirty filter switch is mounted in the exhaust inlet compartment next to the unit control center or in unit control center. To adjust the switch, the unit must be running with all of the access doors in place, except for the compartment where the switch is located (exhaust intake compartment). Model ERV units require the opening around the control center to be covered (with cardboard, plywood, etc.) to set up the dirty filter switch. The adjusting screw is located on the top of the switch. Open the filter compartment and place a sheet of plastic or cardboard over 50% of the filter media. Replace the filter compartment door. Check to see if there is power at the alert signal leads (refer to electrical diagram). Whether there is power or not, turn the adjustment screw on the dirty filter gauge (clockwise if you did not have power, counterclockwise if you did have power) until the power comes on or just before the power goes off. Open the filter compartment and remove the obstructing material. Replace the door and check to make sure that you do not have power at the alert signal leads. The unit is now ready for operation. Setscrew (on front of switch) must be manually adjusted after the system is in operation. Negative pressure connection is toward the ‘front or top’ of the switch. (senses blower side of filters) Positive pressure connection is toward the ‘back or bottom’ of the switch. (senses air inlet side of filters) CO2 Sensor This accessory is often used to provide a modulating control signal to a variable frequency drive to raise and lower airflow in relationship to the CO2 levels in the space. This strategy is often referred to as Demand Control Ventilation and provides further energy savings to the system. Follow instructions supplied with sensor for installation and wiring details. Service Outlet 120 VAC...

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