Accurex XRV-10 Installation, Operation And Maintenance Manual Download Page 35

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Packaged Rooftop Ventilator

Routine Maintenance

Model

Outdoor Air

Weatherhood

(Aluminum Mesh)

Pre-Wheel

Outdoor

Exhaust Filters

Supply Final

Filters

(Pre-coil)

XRV-10

(1) 16x20x1

(1) 12x24 + (1) 24x24

XRV-25

(5, 7, 10 tons)

(4) 20x20x2

(4) 20x20

XRV-25

(12.5, 15 tons)

(4) 20x20x2

(2) 20x20 + (2) 20x24

XRV-45

(4) 25x25x2

(3) 16x20 + (3) 20x20

XRV-75

(12) 16x20x2

(8) 20x20 + (4) 16x20

XRV-110

(8) 20x25x1

(6) 20x24 + (6) 20x20

Summary of Contents for XRV-10

Page 1: ...ntended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been given supervision or instruction concerning...

Page 2: ...ns 13 Piping Installation 14 Electrical Information 15 Control Center Components 16 Component Operation 17 Optional Component Operation 17 Factory Installed Refrigeration Systems 21 Start Up Component...

Page 3: ...er ice or snow and wipe dry before moving to indoor storage To avoid condensation allow cold parts to reach room temperature Leave coverings loose to permit air circulation and to allow for periodic i...

Page 4: ...ir source heat pump ASHP Not available on housing sizes 10 75 and 110 Units with packaged DX are shipped fully charged with refrigerant and are ready for operation upon arrival Heating There are three...

Page 5: ...r 2 4 or 6 inch All other housings are available with a filter bank depth of either 2 or 4 inch Indirect Gas Fired Furnace Housing sizes 10 25 and 45 use furnace model PVG Housing sizes 75 use furnace...

Page 6: ...Coils optional Indirect Gas Fired Furnace optional Plenum Type Supply Air Blower Main Control Center Coils optional Recirculating Damper Furnace Vest Plate and Furnace Control Center optional Low Soun...

Page 7: ...l Electric Heater 4 Electrical 5 Supply Blower 6 Coil 7 Filters 8 Exhaust Blower Optional Electric Preheat 9 Powered Exhaust Blower Section When a powered exhaust fan is selected door 8 will be to the...

Page 8: ...25 Side1 XRV 110 30 70 99 5 96 0 185 45 3 NA 7 950 Bottom or End4 Side All dimensions are shown in inches Weight is shown in pounds and includes largest supply and exhaust fans PDX with reheat largest...

Page 9: ...oor Air Intake NA from Unit NA from Condensing Section NA from Piping Vestibule not shown Other Indoor Mounted with IG Furnace Outdoor Mounted Indoor Mounted XRV 10 50 42 NA 36 NA 24 NA NA XRV 25 40 4...

Page 10: ...DX units require additional clearance because they must have unrestricted air movement around the condenser coil and condenser fans Hot air is being discharged from the condenser fans during operatio...

Page 11: ...110 13 If using forklift on housing 10 use forks with 48 inch length and ensure forks extend to opposite side of unit using factory installed forklift pockets at unit base WARNING Spreader bars are r...

Page 12: ...bled Assembly instructions are included with the curb kit 2 Install curb Locate curb over roof opening and fasten in place Check that the diagonal dimensions are within 1 8 inch of each other and adju...

Page 13: ...ed Tap Gas Cock Gas Connections If this unit is equipped with an indirect gas fired furnace connection to an appropriate gas supply line will be required For complete information on installation proce...

Page 14: ...head pressure available from the circulation pump The velocity should not exceed 6 feet per second and the friction loss should be approximately 3 feet of water column per 100 feet of pipe 5 For chill...

Page 15: ...tch typically between terminal blocks R and G on the terminal strip The relay must be rated for at least 5 amps and have a 24 VAC coil Failure to comply with these guidelines may cause motor starters...

Page 16: ...l Center Components Main Control Center Components Image represents a typical housing 25 or 45 installation Components and locations will vary on housing sizes 10 75 and 110 Electrical Cabinet 1 Power...

Page 17: ...d cooling capacity and the airflow delivered by the fan to maintain room air temp at a desired set point Optional 0 10 VDC by others to VFD Supply fan is modulated by a 0 10 VDC field provided by othe...

Page 18: ...d into outdoor fans resulting in ice formation on fan blades under certain conditions Remove snow accumulation from the unit roof and outdoor coil section after snow storms Airflow Monitor A factory w...

Page 19: ...surface and drain pan disinfection The lights are factory powered and are on when the supply blower is running A kill switch on the coil access door turns the lights off when that door is open Needle...

Page 20: ...Packaged Rooftop Ventilator 20 This page is intentionally left blank for printing purposes...

Page 21: ...th actuator to control the supply air discharge temperature of the unit during dehumidification mode The unit controller provides a 0 10 VDC signal to control the amount of reheat to meet the supply t...

Page 22: ...eat Pump with Three Way Hot Gas Reheat 4WV Outdoor Coil Indoor Coil Outdoor Airflow Hot Gas Reheat Coil Supply Airflow Compressor PT HRV LPS SG SG EXV FDS HPS SV HCV ACC 4WV Outdoor Coil Indoor Coil O...

Page 23: ...ng mode 12 Electronic Expansion Valve EXV or Thermostatic Expansion Valve TXV An expansion valve is provided on each refrigerant circuit This valve controls the flow of liquid refrigerant entering the...

Page 24: ...t be installed except the control center door Vibration Excessive vibration may be experienced during initial start up Left unchecked excessive vibration can cause a multitude of problems including st...

Page 25: ...ress ENTER 7 Set number of flows and press ENTER 8 Set flow and press ENTER 9 Set flow to actual CFM measured by Test and Balance and press ENTER 10 Wait for calibration before cycling power 11 Procee...

Page 26: ...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 5 Open...

Page 27: ...iled information on fault codes and see the unit specific wiring diagram Phase Monitor The phase monitor has two LED indicator lights one red and one green Green indicates proper operational status re...

Page 28: ...rted windings in motor Replace motor Low airflow cfm Unit damper not fully open Adjust damper linkage or replace damper motor System static pressure too high Improve ductwork to eliminate losses using...

Page 29: ...ontactor coil transformer slave relay system Replace parts as necessary Blown fuse or tripped breaker Check for reason and repair Replace fuse after correcting problem Low line voltage Check line volt...

Page 30: ...mal expansion valve setting check for air in system Check air conditions and cfm Defective compressor overload If compressor is hot allow compressor to cool for two hours Recheck for open circuit Impr...

Page 31: ...cycling Check low pressure control settings Refrigerant flood back Check thermal expansion valve setting Check for refrigerant overcharge Check crankcase heater operation Reheat flush cycle inadequate...

Page 32: ...cycling Check low pressure control settings Refrigerant flood back Check thermal expansion valve setting Check for refrigerant overcharge Check crankcase heater operation Reheat flush cycle inadequate...

Page 33: ...line Maintenance Frequency Monthly 1 External Filter Clean metal mesh filters 2 Internal Filters Replace MERV 8 filters monthly Adjust replacement schedule for MERV 13 and MERV 14 or other filters as...

Page 34: ...ed dampers to ensure the actuator opens and closes the damper as designed Gas Furnace Maintain furnace in accordance with instructions in the Indirect Gas Fired Heat IOM shipped with this unit Fan Mot...

Page 35: ...utdoor Exhaust Filters Supply Final Filters Pre coil XRV 10 1 16x20x1 NA NA 1 12x24 1 24x24 XRV 25 5 7 10 tons 4 20x20x2 NA NA 4 20x20 XRV 25 12 5 15 tons 4 20x20x2 NA NA 2 20x20 2 20x24 XRV 45 4 25x2...

Page 36: ...4 8 23 3 38 1 44 1 6 6 6 400 6 6 6 500 14 9 23 6 25 2 57 1 6 6 6 B A C D 500MBH 300 400MBH A B C D 200 300MBH 100 150MBH C A B D C A B D COMBUSTION AIR INLET EXHAUST OUTLET IG FURNACE ACCESS CONTROL C...

Page 37: ...et Dimensions Length Height Edge Thickness Length Height XRV 110 600 6 13 8 17 2 20 5 50 NA NA NA NA NA 21 5 6 1 6 5 5 5 800 6 13 8 24 7 20 5 49 8 6 13 7 18 5 20 5 49 7 20 5 6 1 6 5 5 5 1000 6 13 8 17...

Page 38: ...3300 XRV 25 15A 4300 XRV 45 15 I J 3900 XRV 45 15A 4800 Model Airflow SCFM XRV 45 17 5 I J 4100 XRV 45 17 5A 5500 XRV 45 20 I J 4700 XRV 45 20A 6400 XRV 45 25 I J 5100 XRV 45 25A 7200 XRV 45 30 I J 5...

Page 39: ...This page is intentionally left blank for printing purposes...

Page 40: ...mitment to continuous improvement Accurex reserves the right to change specifications without notice Product warranties can be found online at accurex com either on the specific product page or in the...

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