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Desert Aire - SA Manual

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Содержание SA Series

Страница 1: ...rigeration circuits consist of scroll compressors for high performance and long life Models feature 8 row evaporator coils for high moisture removal capacity SA systems include an exclusive exhaust air heat recovery system and patented air flow balancing SA s dual refrigeration circuit design allows staging to minimize energy consumption and optimize energy recovery ...

Страница 2: ...2 ...

Страница 3: ...perly installed and maintained in accordance with the Desert Aire Installation and Operation Manual provided with each unit and or other documentation provided 2 The Start Up Report must be completed and returned to Desert Aire Service for evaluation If no deficiencies are identified a Warranty Validation Letter will be issued that provides all warranty dates and coverage If installation or start ...

Страница 4: ...epresentative is authorized to make any warranty or assume any liability not strictly in accordance with the aforementioned Inquiries regarding warranty matters should be addressed to Desert Aire Corp c o Service Manager N120 W18485 Freistadt Road Germantown WI 53022 PH 262 946 7400 FAX 262 946 7401 E MAIL service desert aire com Additional copies of this manual can be purchased for a nominal fee ...

Страница 5: ...id possible death or injury Indicates an imminently hazardous situation which if not avoided will result in death or serious injury Indicates a potentially hazardous situation which if not avoided could result in death or serious injury Indicates a potentially hazardous situation which if not avoided could result in minor or moderate injury Caution used without the safety alert symbol indicates a ...

Страница 6: ...6 Desert Aire SA Manual ...

Страница 7: ... the SelectAire with Integral Exhaust Fan 26 2 8 3 1 Indoor Static Sensor Installation 26 2 8 3 2 Outdoor Static Sensor 27 2 8 4 Installation of Optional VOC Monitoring Sensor 28 2 9 Auxiliary Heating Control Wiring 29 2 9 1 Auxiliary Heating Dry Contact Closure 29 2 9 2 Auxiliary Heating Proportional Signal 30 2 10 Gas Heater Optional 30 2 10 1 Gas Heater Installation 31 2 10 1 1 Gas Heater Insta...

Страница 8: ...ower Does Not Run 55 4 2 The Compressor s Do Not Run 55 4 3 High Pressure Alarms Readings Above 575 PSIG 56 4 4 Low Pressure Alarms Evaporator Coil Icing 57 4 5 The Pool Water Is Too Cold 57 5 Appendix 59 5 1 Compressor Failure 59 5 1 1 Compressor Replacement 59 5 2 Recommended Duct Design 62 5 3 Pool Water Chemistry 63 5 4 Recommended Controller Settings 63 5 4 1 Controller Set Points 63 5 5 Syst...

Страница 9: ...onal injury or death 2 Lifting method and procedure must comply with all local and national codes and regulations 3 The use of safety slings in addition to lifting lugs is required 4 Do not lift the dehumidifier in high winds or above people Desert Aire dehumidifiers are solidly built and can be very heavy Avoid personal injury and damaged equipment by planning the installation carefully Use movin...

Страница 10: ...10 Desert Aire SA Manual Figure 1 Typical Rigging for the SA Dehumidifier 1 Do not tip the dehumidifier on it s side 2 Avoid dropping the unit down stairways or subjecting it to severe mechanical shock ...

Страница 11: ...fier with Blocks Installed for Trap Clearance Install outdoor dehumidifiers equipped with an outdoor air intake away from plumbing vents furnace flues or equipment which could contaminate the air supply If the dehumidifier is to be mounted on a roof curb make sure that the curb has been properly mounted and supported Place gasketing around the perimeter of the curb before setting the dehumidifier ...

Страница 12: ...ALL ELBOWS INSULATED OUTSIDE AIR INTAKE DUCT SIZE FOR CODE REQUIREMENTS MOTOR OPERATED DAMPER WEATHER PROOF INTAKE HOOD REMOTE CONDENSER TEMPERATURE AND HUMIDITY CONTROLS MECHANICAL EXHAUST WITH BACK DRAFT DAMPER WALL OR ROOF MOUNTED NOTE CAPACITY SHOULD NOT EXCEED INTAKE VOLUME Figure 3 Basic Pool Room Layout Desert Aire SA Manual ...

Страница 13: ...ypical In Ground Duct Layout You may use galvanized sheet metal ducts for all but underground installations and severely corrosive environments Do not use fiberglass duct boards or acoustic duct liner for air distribution in highly humid applications such as pool room dehumidification If a duct must be installed in an unconditioned area or if you are installing an outdoor air intake duct insulate ...

Страница 14: ... static pressure loss and proper throw and CFM rating Keep the noise criteria levels of the grilles between 35 and 45 dB Use anodized aluminum grilles to prevent premature corrosion Desert Aire SA Manual VAPOR BARRIER MAIN SUPPLY AIR DUCT WINDOW POOL BRANCH SUPPLY AIR DUCT ANODIZED ALUMINUM RETURN AIR GRILLE LOCATE AS HIGH AS POSSIBLE RETURN AIR DUCT DESERT AIRE DEHUMIDIFIER SKYLIGHT FLEXIBLE DUCT...

Страница 15: ... can be configured to bring in low flow rate of outdoor air in order to offset any amount of exhaust that may be extracted from this separate system Unoccupied mode is engaged when no other mode is presently engaged Occupied mode This mode is used when a typical amount of occupancy in the space is to be encountered Occupancy can be commanded with any of the following Internal Occupancy Schedule vi...

Страница 16: ...the space must be kept at a negative static pressure in order to avoid mold and property damage Note that condensation may occur when cold outdoor air is mixed with warm humid return air inside the dehumidifier During the winter months this moisture can freeze and cause serious damage to the equipment Desert Aire dehumidifiers are equipped with an internal temperature sensor which will close the o...

Страница 17: ...cts to control the exhaust blower Outdoor air louvers and the exhaust blower must be field supplied Figure 7 shows typical ducting for an indoor SelectAire unit configured for Outdoor Air with Damper and Filter Figure 7 Indoor Dehumidifier with Filter and Damper Module 3 A SelectAire unit configured for indoor installation with Outdoor Air with Damper and Filter option has a module which contains ...

Страница 18: ...aust Air Energy Recovery There are two possible configurations for units containing Exhaust Air Energy Recovery 1 An indoor SA unit with Exhaust Air Energy Recovery contains a module which handles outdoor makeup air and exhaust air This factory installed module includes filters dampers actuators and an exhaust blower This module has flanged openings for the outdoor and exhaust air ducts The ductwo...

Страница 19: ...oor makeup air and exhaust air This factory installed module includes filters dampers actuators and an exhaust blower The module ordered for an outdoor unit discharges the exhaust air to the atmosphere and draws in outdoor air Both air streams are protected by a weather hood Figure 10 Outdoor Dehumidifier Showing Outdoor Air and Exhaust Desert Aire SA Manual ...

Страница 20: ... underside of the unit to help prevent freezing This drain has a 1 1 2 MPT fitting Figure 12 SA Roof Curb Unit Showing Condensate Drain Location Whichever type of drain your dehumidifier has it must be trapped to prevent condensate from backing up in the drain pan The cabinet of the dehumidifier is under negative pressure whenever the supply blower is running If you do not trap the drain condensat...

Страница 21: ... of downward pitch per linear foot of run 2 Support the drain pipe every five feet to prevent sagging 3 After you install the drain piping prime the trap by pouring water into the drain pan of the dehumidifier 2 4 Pool Water Piping The Desert Aire dehumidifier may be equipped with an optional pool water heating condenser Use copper or schedule 80 CPVC pipe and fittings to adapt to the water circui...

Страница 22: ... 6 Filter Rack Assembly with Filters 7 Return Air 8 Vibration Isolators 9 P Trap 10 Base If Required LEGEND 11 Check Valve 12 Ball Valve 13 Flow Meter 14 Main Pool Heater 15 Auxiliary Pump 16 Filter Assembly 17 Main Pool Pump 18 Water Temp Sensor Dry Well 19 Water Inlet 20 Water Outlet Figure 14 Typical Pool Water Piping Diagram Desert Aire SA Manual ...

Страница 23: ...tion Water Circuit Size 9 10 Ton 15 Ton 20 Ton 25 Ton 30 Ton Water Flow Rate and Pressure Drop Pool 20 GPM 25 ft W C 30 GPM 25 ft W C 40 GPM 25 ft W C 50 GPM 25 ft W C 60 GPM 25 ft W C Water Flow Rate and Pressure Drop Spa 27 GPM 35 ft W C 40 GPM 35 ft W C 53 GPM 35 ft W C 67 GPM 35 ft W C 80 GPM 35 ft W C Figure 15 Standard Unit Water Flow Rates for Units Equipped with this Option 2 5 Auxiliary H...

Страница 24: ...te condenser connections to confirm the charge and lines for those systems SA Series Remote Condenser Line Size R 410A Figure 16 Remote Condenser Line Size Summary for Units Equipped with this Option Performance rated at return air conditions of 82 F 60 RH 50 Actual line length 62 5 Equivalent line length 2 7 High Voltage Wiring You must follow all local codes when you connect the high voltage wir...

Страница 25: ...rid in the field when required by code This also removes the possibility of differences in potential between metals in the pool water and the water condenser that may accelerate corrosion The bonding lug should be connected to the equipotential grid with 8 AWG or larger solid copper conductor 2 8 Controls and Sensors The standard Desert Aire SA series dehumidifiers are controlled by a microprocess...

Страница 26: ...hat the inlet water temperature is sensed The Aux pool water heater should not be installed upstream of the dehumidifier Install heater downstream or in parallel with dehumidifier The sensor must be installed in a location where it will accurately sense the pool water temperature This means you must have continuous water flow at the sensor location 2 8 3 Installation of Sensors for the SelectAire ...

Страница 27: ... Sensor rear view 2 8 3 2 Outdoor Static Sensor A complication in measuring the building static pressure is the dynamic action of the wind Measuring the wind s pressure instead of the true outdoor static pressure will alter the actual static pressure reading Proper mounting of the outdoor static sensor will help ensure accurate readings The outdoor air static pressure sensor should be mounted at l...

Страница 28: ... fluctuation in the sensor readings due to wind gusts Excess tubing should be coiled at some convenient location rather than cut Connect the tubing to the static pressure differential transducer in the unit The correct port is labeled for the outdoor air sensor Closely observe that the indoor static pressure sensor and outdoor static pressure sensor are installed on the proper ports as labeled 2 8...

Страница 29: ...perature It also prevents the heater from trying to heat the room while the dehumidifier is running in cooling Desert Aire will provide a signal to operate the auxiliary pool room heating system The signal can either be a binary dry contact closure or a proportional voltage with an optional dry contact closure to operate an interlock or pump The heating output type is pre set from the factory base...

Страница 30: ...e connection points When the proportional signal is ordered the binary heating output acts as an interlock This can be used to activate a pump valve or interlock that needs to be coordinated with the proportional heating signal The contact rating is shown on the electrical schematic Use a transformer and relay to energize loads that are higher than the contact rated current draw or power 2 10 Gas ...

Страница 31: ...vier than air This fact should be kept in mind when determining installation location of these heaters and building exhaust systems 2 10 1 Gas Heater Installation 2 10 1 1 Gas Heater Installation with Roofcurb If the system was ordered with a roofcurb from Desert Aire the curb will have provisions for mounting the unit and heater in specific locations Place the main unit first Verify proper placem...

Страница 32: ...ter such that the centerline of the blast openings of the fan and the centerline of the drum of the heater are at equal elevations In order to ensure proper airflow distribution dunnage may be required under the heater to keep the centerline elevation Failure to lift the heater to the proper elevation may lead to shortened heater life After placing the unit and the heater but before ducting betwee...

Страница 33: ...mages to set up the flue B vent Below are lists of the necessary tools and parts required to perform the installation process Tools Required Not Included Included Parts ___________________________________________________ Power Driver 14 Self Drilling Screws 12 3 8 Driver Bit Screw Tip Covers 12 Locking Pliers Vise Grip 1 4 20 x 5 8 Bolt 2 Work Gloves 1 4 20 Nut 2 1 4 Washers 4 Figure 23 Gas Heater...

Страница 34: ...ure the mounting tabs are directed away from the heater 2 Remove the rearmost screw from the front heater roof panel see below Figure 24 B Vent heater roof 3 Install the angle such that the flange is oriented towards the heater using the screw from Step 2 Tighten the screw such that the angle is held snugly but can still be rotated Figure 25 B Vent flange Desert Aire SA Manual ...

Страница 35: ...e nut and bolt such that the angle is held snugly but can still be rotate Figure 26 B Vent second angle flange 5 Using locking pliers bend the two angles at their flanges such that they meet up and overlap Once in position use the locking pliers to hold angles together Figure 27 B Vent flanges together Desert Aire SA Manual ...

Страница 36: ...harge gas vent piping 2 10 1 7 Finalize Installation Connect communication and power wiring from the unit to the heater Be sure to keep conduit clear of door openings Connect gas lines per heater manufacturer instructions Install transition duct between SA unit and heater Insulate transition duct 2 10 2 Gas Heater Start Up Place the unit into heating mode Verify the induction fan begins running Ve...

Страница 37: ...l heat the Desert Aire controller will then energize the auxiliary water heater Note Do not use the aqua stat mounted on the auxiliary heater for temperature control This can lead to excessive water temperature fluctuation It may also permanently prevent the dehumidifier from heating pool water if the set point of the heater aqua stat is higher than the water heating set point of the dehumidifier ...

Страница 38: ...38 Desert Aire SA Manual ...

Страница 39: ...anty Check the following items Before starting unit remove wooden shipping blocks found beneath compressor s Before starting unit remove shipping restraining brackets on supply blower equipped with the spring isolation base if applicable Verify that the incoming power supply matches the rating plate of the dehumidifier The fused disconnect and the power supply wiring must be rated to handle the mi...

Страница 40: ...piping on units equipped with the water heating option Inspect for leaks and proper installation of components Verify that the auxiliary pump operates if one is used Purge all air out of the pool water piping Check the heating control valve and piping on dehumidifiers equipped with an optional hot water or steam heating coil Verify that all sensors are installed and operating properly Verify that ...

Страница 41: ...ram s to identify compressor knife switches 3 2 1 Airflow Setup of SelectAire without Integral Exhaust Fan The total airflow of a Desert Aire SA system can be checked by measuring the static pressure drop across the reheat condensers and the evaporator coils The dehumidifier features an adjustable blower sheave to simplify air balancing Figure 32 Dehumidifier Side View Showing Location of Air Bala...

Страница 42: ... outdoor air damper opens and exhaust fan by others is energized 8 Measure outdoor airflow rate with hood duct traverse or other measurement method appropriate for the installation Airflow rate can be adjusted by the OA Occ damper setting in the DAMPER SETTINGS menu of the controls Note that the flow rates for outdoor air are application specific Refer to the mechanical equipment schedule or other...

Страница 43: ... condensing The SelectAire unit includes provisions to measure the differential in static pressure between the space and the outdoors and help to maintain this negative static pressure in the space pressure in the space The Desert Aire SA unit with exhaust fan contains operational controls that assist in maintaining the poolroom envelope at a negative static pressure Proper setup allows these cont...

Страница 44: ...to make the effective diameter larger and increasing the belt speed Should the Reheat dp be lower than the target open the adjustable sheave flange to decrease the belt speed Exhaust and Outdoor Airflow Setup The SelectAire system with Integral Exhaust Fan have sensors and controls that are self balancing for exhaust and outdoor air flow rates The unit set points are set at the factory based on th...

Страница 45: ...etup in this mode is done based on a pressure in the zone 1 Use controller display under SERVICE MENU AIRFLOW SETTINGS AIRFLOW SETUP and use the down arrow until the OA SETUP UNOCC screen is shown Set the Override to On 2 Ensure that any Low Exhaust fan or device is operating in Unoccupied Mode 3 Read the zone pressure on the display The recommended pressure is 0 05 WC Should the pressure be lower...

Страница 46: ... each mode programmed into the controller display under SERVICE MENU AIRFLOW SETTINGS AIRFLOW SETUP MAX EXH FLOW RATE These settings have been factory pre set to the airflow indicated at the time of unit order It should be noted that these flow rates act as maximum flow rates for each mode of operation The controls attempt to achieve a negative zone pressure 2 Use the controller display under SERV...

Страница 47: ...Desert Aire Service 3 2 3 Final Air Balancing Once the supply air and exhaust air setup have occurred the unit will automatically adjust the damper positions and drive speed in each mode of operation The outdoor air damper will open and modulate to achieve the pre determined pressure drop set point of the outdoor air stream pressure plate This has been determined by the customer requested occupied...

Страница 48: ...ime of order When set for Staged the dry contact associated with the heating output will close on a drop in temperature of the zone set point minus the deadband minus the differential The contact will remain closed until the temperature reaches the zone set point minus the differential Heater On Zone Set point Heating Deadband Heating Differential Heater Off Zone Set point Heating Deadband Example...

Страница 49: ...the calculated Supply Air Temperature Set Point The heater output will modulate to maintain the calculated Supply Air Temperature Set Point The heating mode is always disabled if the zone exceeds the Zone Temperature Set Point Resetting the supply air temperature in heating not only closely maintains the zone temperatures but helps ensure the supply air temperature is held to minimum values The de...

Страница 50: ...cipated Observing the unit control the space for a few cycles is recommended This can be done reasonably well as the tools and site is being cleaned up at the end of a startup or service call The following are examples of how the unit will be expected to operate in the typical loads encountered Note that there are many variables in conditions and unit sizing These are included to give basic unders...

Страница 51: ...some cases Note that in extreme cool and dry conditions when in occupied mode the outdoor air may dry the space significantly When this is the case the exhaust air may no longer have the energy to recover The unit controls will disable the energy recovery mode when this occurs if the unit is equipped with the option 3 3 Refrigeration Testing Refrigerant based cooling systems are sometimes referred...

Страница 52: ...n the system while under a vacuum Should system require opening to repair a leak or other service when in a vacuum fill with dry nitrogen to atmospheric pressure before opening Have a Schrader core replacement tool available when servicing the refrigeration system Although rare defective or damaged Schrader valve cores can contribute to refrigerant loss Charge system only by weight after servicing...

Страница 53: ...ng to the dehumidifier on units equipped with optional pool water heating Make sure that all air has been bled out of the lines and check that an air bleed valve has been installed at any high points in the water lines If the circulating pump is not set for continuous operation make sure it is properly interlocked with the dehumidifier Temporarily shut off the water flow to the unit to verify that...

Страница 54: ...ed the total air volume Check the operating pressures of the refrigeration circuits Check the current draw of each blower motor Check the current draw of each compressor Lubricate the blower motor s Lubricate the supply blower bearings Supplier FINA SHELL ESSO MOBIL Type Marson HTL 3 Alvania Fett 3 Beacon 3 Mobilux EP3 Base Litium Litium Litium Litium Range temperature min max 30 C 120 C 20 C 130 ...

Страница 55: ...ge control wiring Determine if voltage is applied to the holding coil of the blower contactor If there is no voltage at the holding coil check the blower overload the control transformer the smoke alarm interlock or the optional voltage monitor relay If the dehumidifier uses a non standard controller or if the blower is cycled by the building management system consult with the controls contractor ...

Страница 56: ...is valve which is installed in the compressor discharge line diverts hot refrigerant vapor to the various condensers on units equipped with optional pool water heating or remote condensers The valve spool may be stuck in the middle of the valve where it blocks the outlets to both condensers You can verify its operation by first running the compressor and then measuring the temperature of both cond...

Страница 57: ...the liquid line solenoid the filter drier the expansion valve or the distributor Check to see that the system is properly charged and that the liquid line sight glass shows no bubbles The refrigerant on an undercharged system can migrate to the coldest condenser on the off cycle causing the receiver to lose its liquid seal 4 5 The Pool Water Is Too Cold This section applies to Desert Aire dehumidi...

Страница 58: ...fouling and scaling Check that all service valves and solenoid valves in the liquid line are energized or fully open Verify that there are no restrictions or debris in the liquid line solenoid the filter drier the expansion valve or the distributor Desert Aire SA Manual ...

Страница 59: ... parts in a scroll compressor subject to wear compared to alternative compressor designs Nonetheless there are still many mechanical and electrical parts with close tolerances Replacement of the compressor may be required during the normal service life of the dehumidifier Inspection and Initial Diagnosis Generally the compressor will have two basic failure modes mechanical and electrical The compr...

Страница 60: ...ny Compressor Service A new filter dryer must be installed when the system has been opened See Section 5 6 for component replacements If there is no acid or particulates indicated the new compressor can be installed and run Proceed to Testing and Final Diagnosis Acid Indicated Install a suction line filter shell and charcoal activated core such as a Sporlan or Emerson HH core type or equivalent Th...

Страница 61: ... liquid and suction filters during the first hour of operation Compare the reading taken earlier If the pressure differential across the filters is more than 5 PSI greater than the initial reading isolate the filters using the valves installed and recover the refrigerant from the filters Replace cores If activated carbon filters were installed in the suction side to remove acid replace with simila...

Страница 62: ...Both the identification of the cause of compressor failure and the proper cleanup of the system must be addressed to avoid repeat compressor damage 5 2 Recommended Duct Design You must use proper duct design to ensure that the dehumidifier operates efficiently and without problems Undersized or restrictive ducts reduce the system airflow which can cause premature compressor failure Use the followi...

Страница 63: ...ill reduce air stratification and assure that the refrigeration circuit is activated only when it is necessary RECOMMENDED SET POINTS Humidity 50 to 60 RH Air Temperature 2 to 4 F above the pool water temperature Never disable a dehumidifier in a pool room application unless the pool has been drained Even when not in use pool water continues to evaporate adding moisture to the air During these per...

Страница 64: ...ate for the refrigerant being serviced System pressure near the leak site should be monitored closely to ensure this area is not pulled to a vacuum Isolate sections of the system as required and recover independently to avoid refrigerant contamination Uncontaminated refrigerant can be reused in the refrigeration system it was recovered from Recovery of Systems without a Leak Systems that do not ha...

Страница 65: ...recommended that phosphorous bearing alloys be considered for copper to copper connections due to their self fluxing on copper to copper joints Refer to alloy manufacturer s guidelines for details on compatibility Flow nitrogen into tubing to prevent the formation of copper oxides Copper oxides form rapidly when copper is heated to temperatures required by the brazing process and exposed to oxygen...

Страница 66: ...ery small amounts of refrigerant may still be mixed with the oil in the system Out gassing of this refrigerant may interfere with the evacuation and vacuum decay testing IF AND ONLY IF a unit has been previously charged with refrigerant and standard evacuation method has not been successful after 24 hours minimum using the standard procedure the following alternate method should be used 1 Check va...

Страница 67: ...ed for charge addition Monitor superheat at the compressor suction inlet using the bulkhead fitting and a temperature sensor on the suction line near the compressor Superheat should not drop below 10 degrees during the process of adding charge Testing and Final Diagnosis Check the oil level in the compressor after the system has been running for 24 hours Oil may have been contained in the liquid r...

Страница 68: ...th filling out the Start Up Report He will also inspect the installation to make sure that the dehumidifier has been properly integrated with the rest of the equipment on the jobsite Finally he can train the maintenance personnel to operate and service the equipment if necessary A factory start up does not include installation assistance The installing contractor is responsible for ensuring that t...

Страница 69: ...re additional field charging Refer to the charge label affixed to the unit for details Refrigerant added __________lbs if applicable Gas heater lines plumbed and purged Record gas pressure entering the unit ________ wc if applicable Refrigeration line set is clamped and the header supported per the Air Cooled O manual sec 2 3 Pressure transducer and cord sent with the remote condenser installed on...

Страница 70: ...________________________ If you are unable to supply any of the required equipment you must contact Desert Aire before returning this document I agree that all of the above has been completed as of _____________ Date If a return trip must be scheduled due to insufficient job site preparation an additional purchase order must be issued to Desert Aire for re scheduling A two week minimum is needed t...

Страница 71: ...the unit are noted on this form The model and serial number can be found on the system s rating plate located on or near the electrical compartment service door Failure to complete and return this form will void the unit s warranty These reports are also helpful when trying to correct existing problems Should you need system diagnosis help fax the completed worksheet to Desert Aire s Service Depar...

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Страница 78: ... more legs Compressor drawing higher current than design Continuity 0 resistance between two or more legs 3 phase units Compressor drawing locked rotor current Other describe Runs without pumping Pressures _____ _____ Final Determination of Failure Liquid Floodback Low Superheat Debris Defective Expansion Valve Low Sump Oil Insufficient Motor Cooling Other Describe Diagnostic Corrective Action Sum...

Страница 79: ...Circuit B Use both sides for tandem set Motor See wiring schematic for details Discharge Pressure PSIG PSIG PSIG PSIG Liquid Line Pressure At access fitting nearest TXV PSIG PSIG PSIG PSIG Suction Pressure At compressor PSIG PSIG PSIG PSIG Liquid Line Temperature At access fitting nearest TXV F F F F Suction Temperature At Compressor F F F F Refrigerant Sight Glass Condition Clear Intermittent Vap...

Страница 80: ...MIZING SOLUTIONS THROUGH SUPERIOR DEHUMIDIFICATION TECHNOLOGY N120 W18485 Freistadt Road Germantown WI 53022 E mail info desert aire com Ph 262 946 7400 Fax 262 946 7401 Website www desert aire com 032 2018 12 ...

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