Zehnder Rittling VS 09, Installation, Operation And Maintenance Manual

Page 1: ...i Cooling Fresh Air Clean Air Heating Vertical Stack Water Source Heat Pump Installation Operation and Maintenance ...

Page 2: ...allation 12 Applications 15 Electrical data 20 Installation 25 Wiring diagrams 35 Start up 39 Maintenance 50 Replacement parts 52 Troubleshooting 56 Warranty Back cover IMPORTANT Submittal documentation specific to each project supersedes the general guidelines contained within this manual ...

Page 3: ...p left right SE Left right DH Left top back TH Top back left right SF Front right DJ Back right left TJ Front back right left SG Back right DK Front right left TK Front back top left SH Top right DL Front back left TL Front top right left SJ Right left DM Right top back TM Top back right left SK Back left DN Front top left SL Front left DO Back top left SM Top left DP Right top left DQ front top r...

Page 4: ... top right back NC None left DC Left right back TC Front top left back SA Front back DD Front top back TD Top left right back SB Right back DE Front left right TE Front back left right SC Left back DF Back left right TF Front back top right SD Top back DG Front back right TG Front top left right SE Left right DH Left top back TH Top back left right SF Front right DJ Back right left TJ Front back r...

Page 5: ... 1 2 3 0 GPM 1 2 E 3 4 2 0 GPM 3 4 F 3 4 2 5 GPM 3 4 G 3 4 3 0 GPM 3 4 5 H 3 4 3 5 GPM 5 6 I 3 4 4 0 GPM 5 6 J 3 4 5 0 GPM 5 6 7 K 3 4 6 0 GPM 5 6 7 L 3 4 7 0 GPM 6 7 M 3 4 8 0 GPM 6 7 N 3 4 9 0 GPM 7 O 3 4 10 5 GPM 7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 VHCH 09 A 1 D A X A 1 A AA Special option codes AA Standard Placeholder Revision level A Rev 1 Air filter 1 Washable 2 1 throwaway Hose kit ...

Page 6: ...amage on all copies of the freight bill and completes a common carrier inspection report Concealed damage not discovered during unloading must be reported to the carrier within 15 days of receipt of shipment If not filed within 15 days the freight company can deny the claim without recourse Note It is the responsibility of the purchaser to file all necessary claims with the carrier Storage Equipme...

Page 7: ...nd all plastering painting etc is finished Verify refrigerant tubing is free of kinks or dents and that it does not touch other unit components Inspect all electrical connections Connections must be clean and tight at the terminals Remove blower shipping support packaging if applicable Some airflow patterns are field convertible Locate the airflow conversion section of this manual for instructions...

Page 8: ...te connection size in 3 4 3 4 3 4 3 4 3 4 3 4 3 4 Air coil data Total face area ft 1 48 1 48 1 81 1 81 1 72 1 72 1 72 Tube size in 3 8 3 8 3 8 3 8 3 8 3 8 3 8 Fin spacing FPI 14 14 14 14 12 12 12 Number of rows 2 3 4 4 3 4 4 Cabinet data Depth in 18 18 18 18 24 24 24 Height in 88 88 88 88 88 88 88 Width in 18 18 18 18 24 24 24 Filter standards washable filter in 14 1 4 x 18 1 2 14 1 4 x 18 1 2 14 ...

Page 9: ...ory installed P trap Air coil drain pan Control box access panel Optional auto flow regulator location return side Optional water valve location supply side Condensate drain pan Right view Air coil Optional duct connection C B 1 3 N 3 1 4 2 3 8 H I J K M H L 2 1 8 2 5 16 2 11 16 1 5 8 57 1 8 39 1 2 2 7 8 Unit dimensions 88 height Dimension Models 09 18 Models 24 36 A 18 24 1 4 B 8 10 C 12 14 D 10 ...

Page 10: ...Factory installed P trap Air coil drain pan Control box access panel Optional auto flow regulator location return side Optional water valve location supply side Condensate drain pan Right view Air coil Optional duct connection C B 1 3 N 3 1 4 2 3 8 H I J K M H L 3 2 1 8 2 5 16 2 11 16 1 5 8 57 1 8 39 1 2 2 7 8 Unit dimensions 88 height Dimension Models 09 18 Models 24 36 A 18 24 1 4 B 8 10 C 12 14...

Page 11: ...ide Condensate drain pan Right view Air coil Optional duct connection C B 1 3 N 3 1 4 2 3 8 H I J K M H L 2 1 8 2 5 16 2 11 16 1 5 8 57 1 8 39 1 2 2 7 8 Unit dimensions 88 height Dimension Models 09 18 Models 24 36 A 18 24 1 4 B 8 10 C 12 14 D 10 12 E 14 16 F 54 11 16 55 1 2 G 5 9 16 5 5 8 H 2 1 16 4 1 8 I 4 1 16 6 1 8 J 1 15 16 4 1 16 K 3 5 16 6 1 16 L 1 1 4 1 7 16 M 3 1 4 3 7 16 N 4 3 4 8 13 16 ...

Page 12: ...n off main power to system There may be more than one disconnect switch The installation and servicing of air conditioning equipment can be hazardous due to system pressure and electrical components Only trained and qualified service personnel should install repair and or service air conditioning equipment Untrained personnel can perform basic maintenance functions such as cleaning coils and clean...

Page 13: ...e the shipping company makes proper notation of any shortages or damage on all copies of the freight bill Concealed damage not discovered during unloading must be reported to the shipping company within 15 days of receipt of the shipment Note It is the responsibility of the purchaser to file all necessary claims with the shipping company Verify unit is the correct model for the entering water temp...

Page 14: ...5 8 the return panel will not fit snugly to the wall and form a tight seal Install drywall using conventional construction methods Drywall cannot be fastened to the studs with adhesive alone Mechanical fasteners such as drywall screws must be used Vacuum all drywall dust and construction debris from coils drain pans and blower discharge plenum after cutting out supply and return holes for grilles ...

Page 15: ... factory allowances The table showing allowable riser lengths between system expansion loops displays expansion characteristics of risers compared to water temperature Allowable riser lengths between system expansion loops 1 inch pipe size 1 inch pipe size Water temperature difference F Riser Length for 1 inch and 1 inch expansion ft 20 0 50 100 150 200 250 300 350 400 450 500 550 40 60 80 100 120...

Page 16: ...floor and the building structure on at least two sides using sheet metal angles field provided A field provided base vibration dampening pad can be used to help eliminate transfer of any vibration to the structure If vibration dampening pads are used some rough in dimensional changes will need to be considered before installation due to style and thickness of the pads Additional anchorage can be p...

Page 17: ...ial prior to operation see Piping System Cleaning and Flushing Procedures in this manual The flow rate is usually set between 2 25 and 3 5 gpm per ton 2 9 and 4 5 l m per kW of cooling capacity Zehnder Rittling recommends 3 3 gpm per ton 4 3 l m per kW for most applications of water loop heat pumps To ensure proper maintenance and servicing P T ports are imperative for temperature and flow verific...

Page 18: ...ll foreign objects and purge to remove all air Loop conditions When entering loop conditions meet values specified in Table 3 below or where piping will be routed through areas subject to freezing antifreeze is required Alcohols and glycols are commonly used as antifreeze however your local sales representative should be consulted to determine the antifreeze best suited to your area Freeze protect...

Page 19: ...ger may require occasional acid flushing Water quality standards Table 5 should be consulted for water quality requirements Scaling potential should be assessed using the pH calcium hardness method If the pH 7 5 and the calcium hardness is less than 100 ppm scaling potential is low If this method yields numbers out of range of those listed the Ryznar Stability and Langelier Saturation indicies sho...

Page 20: ...d on the discharge line Slightly closing the valve will spread the pressure drop over both devices lessening the velocity noise Water coil low temperature limit setting Zehnder Rittling s heat pump controller includes a user configurable switch DIP switch 2 on the PCB controller to change the low water temperature cutout FP1 setting between water 30 F and Glycol 10 F When loop conditions allow ant...

Page 21: ...equired Iron oxide Low levels only Moderate levels Corrosion 1 Corrosion inhibiters 2 pH control 3 Proper materials of construction 1 Corrosion inhibiters high concentrations 2 Proper materials of construction pH 6 5 7 5 5 10 Hydrogen sulfide 10 PPM 10 50 PPM CO2 50 PPM 50 75 PPM Chloride 300 PPM 300 600 PPM Total dissolved solids 100 PPM 1000 1500 PPM Slime and algae Slime and algae can form unde...

Page 22: ...230 60 1 197 254 18 6 79 0 442 2 10 20 7 25 4 40 B 277 60 1 250 293 16 0 87 0 360 1 30 17 3 21 3 40 Standard EC motors Size Voltage code Rated voltage V Hz Ph Voltage min max Compressor FLA Total unit FLA Min circuit Amps Max fuse HACR size RLA LRA 09 A 208 230 60 1 197 254 4 7 20 0 2 9 2 6 7 6 7 3 8 8 8 5 15 B 277 60 1 250 293 3 3 18 8 2 5 5 8 6 6 15 12 A 208 230 60 1 197 254 6 3 27 0 2 9 2 6 9 2...

Page 23: ... 254 18 6 79 0 650 3 4 22 0 26 7 50 B 277 60 1 250 293 16 0 87 0 650 2 9 18 9 22 9 40 High static EC motors Size Voltage code Rated voltage V Hz Ph Voltage min max Compressor FLA Total unit FLA Min circuit Amps Max fuse HACR size RLA LRA 9 A 208 230 60 1 197 254 4 7 20 0 2 9 2 6 7 6 7 3 8 8 8 5 15 B 277 60 1 250 293 3 3 18 8 2 5 5 8 6 6 15 12 A 208 230 60 1 197 254 6 3 27 0 2 9 2 6 9 2 8 9 10 8 10...

Page 24: ...n on the unit serial plate Line and low voltage wiring must be completed in accordance with local codes or the National Electric Code whichever is applicable Three phase wiring is similar except that all four power wires are directly connected to the contactor Power connection Line voltage connection is made by connecting the incoming line voltage wires to the L side of the contactor or to the opt...

Page 25: ...363 345 324 Low 426 409 394 382 368 354 337 319 304 279 VHN12 High 568 380 568 547 533 515 500 485 471 453 434 415 399 Low 474 459 444 426 415 404 386 369 354 338 VHN15 High 635 474 669 659 649 641 632 621 608 595 584 573 561 542 532 520 511 Low 600 589 581 572 562 547 536 525 514 505 494 484 474 0 0 VHN18 High 750 560 750 738 730 721 712 705 698 686 671 656 644 632 619 609 599 Low 669 659 649 641...

Page 26: ...risers as follows Close shut off valves at each unit on the riser except the shut off valve on the top floor Flush solution through supply riser Note The solution passes through the top floor connection down the return riser When the building has more than ten floors connect the supply and return run outs on the top two floors to divide the water flow and reduce pressure drop at the pump Repeat fl...

Page 27: ...e valve before attaching to the union in the cabinet Note The valve union is to be hand tight plus an additional quarter turn Always use a back up wrench on the fittings being tightened Attach flex hoses Let the universal ends of the hoses hang inside the cabinet Note Be sure the valve handles and P T ports are in a position that enables them to be opened and closed and used for system readings Ch...

Page 28: ...t sharp edges or structural building components Compressor vibration may cause hose failure and vibration transmission through the hoses to the structure causing noise complaints Hose kit Specifications Designed for VS series applications Temperature range of 35 F 2 C to 180 F 82 C Maximum working pressure of 400 psig 2756 kPa Fire rated materials per ASTM E 84 00 NFPA 255 ANSI UL 723 and UBC 8 1 ...

Page 29: ...nst housing If rough handling during shipping has caused fan wheel to shift adjust as necessary Verify that water piping connections to the chassis are complete and that unit service valves which were closed during flushing have been opened Verify that power between the cabinet and chassis is properly connected After the system has been filled and system pump is started all connections should be r...

Page 30: ...harge openings as follows Insert the grille into the cabinet supply duct extension s Assure that the grille flange rests against the drywall covering the cabinet Secure the grille to the drywall with the screws provided Supply grille installation Table 12 Supply grille sizes and arrangements Unit Single discharge 1 Double discharge 2 Triple discharge 3 VHN 09 14 x 12 10 x 8 Not recommended VHN 12 ...

Page 31: ...e subject to change without notice Individually adjustable blades 1 1 4 1 7 8 5 8 D A C B 1 1 8 Dimensional data Grille size A B C D 16 x 14 17 11 16 15 11 16 15 11 16 13 11 16 14 x 12 15 11 16 13 11 16 13 11 16 11 11 16 12 x 10 13 11 16 11 11 16 11 11 16 9 11 16 10 x 8 11 11 16 9 11 16 9 11 16 7 11 16 Supply grille arrangements Unit Size Single discharge Double discharge Triple discharge 09 14 x ...

Page 32: ... notice Dimensional data Grille size A B C D 16 x 14 17 11 16 15 11 16 15 11 16 13 11 16 14 x 12 15 11 16 13 11 16 13 11 16 11 11 16 12 x 10 13 11 16 11 11 16 11 11 16 9 11 16 10 x 8 11 11 16 9 11 16 9 11 16 7 11 16 Supply grille arrangements Unit Size Single discharge Double discharge Triple discharge 09 14 x 12 10 x 8 10 x 8 12 14 x 12 10 x 8 10 x 8 15 14 x 12 10 x 8 10 x 8 18 14 x 12 10 x 8 10 ...

Page 33: ...dard finish is powder coated and will be the same color as the return grille n n Mounting hardware included All listed dimensions are approximate and are subject to change without notice Individually adjustable blades on 2 3 spacing Slide operator 1 1 4 5 8 D A B 2 13 16 One piece extruded frame 2 3 C 5 32 Dimensional data Grille size A B C D 16 x 14 17 11 16 15 11 16 15 11 16 13 11 16 14 x 12 15 ...

Page 34: ...s 24 36 Allen lock removable Item number Description Quantity 1 Return panel 1 2 Quarter turn fastener 1 3 Door stop 3 4 Screw 10 5 Pivot angle 2 6 Frame 1 7 Frame support 1 Standard removable perimeter return air panel Notes Seal between the frame and cabinet with a weather serial gasket provided with cabinet to avoid air from being pulled in from the wall cavity Do not attach frame to cabinet Fr...

Page 35: ... Notes Seal between the frame and cabinet with a weather serial gasket provided with cabinet to avoid air from being pulled in from the wall cavity Do not attach frame to cabinet Frame support shipped with cabinet Door assemblies shipped separately Key lock or Allen lock Item number Description Quantity 1 Return panel 1 2 Quarter turn fastener or key lock 2 3 Door stop 2 4 Screw 12 5 Hinge 2 6 Fra...

Page 36: ... to studs typical 1 2 3 4 Notes Seal between the frame and cabinet with a weather serial gasket provided with cabinet to avoid air from being pulled in from the wall cavity Do not attach frame to cabinet Frame support shipped with cabinet Door assemblies shipped separately 61 1 8 24 3 16 17 11 16 24 29 32 30 3 16 61 7 8 19 11 16 24 29 32 2 15 16 2 15 16 30 3 16 61 7 8 19 11 16 24 29 32 2 15 16 Opt...

Page 37: ...tage is 230V installer must rewire transformer R RC C Y1 AL G O Y2 Note 3 Typical 24VAC 2 Stage stat 4 L1 Com2 modbus address 8 J1 1 2 3 ORANGE 240V Brown Black Blue Yellow White Red Yellow O W AL G Y2 Y1 C R Note 2 Note 2 ES NSB JP1 JP2 P3 COM NC2 COM NC1 NO2 NO1 R R COM 2 COM COM 1 Note 4 Optional Disconnect Switch G 208 230V 60HZ 1PH Power Supply Unit L1 L2 T2 T1 CC Blue Black 7 8 5 6 3 4 1 2 7...

Page 38: ...ransformer R RC C Y1 AL G O Y2 Note 3 Typical 24VAC 2 Stage stat 4 L1 Com2 modbus address 8 J1 1 2 3 ORANGE 240V Brown Black Blue Yellow White Red Yellow O W AL G Y2 Y1 C R Note 2 Note 2 ES NSB JP1 JP2 P3 COM NC2 COM NC1 NO2 NO1 R R COM 2 COM COM 1 Note 4 Optional Disconnect Switch G 208 230V 60HZ 1PH Power Supply Unit L1 L2 T2 T1 CC Blue Black 7 8 5 6 3 4 1 2 7 8 5 6 3 1 2 Orange Orange Red Red B...

Page 39: ... voltage is 230V installer must rewire transformer R RC C Y1 AL G O Y2 Note 3 Typical 24VAC 2 Stage stat 4 L1 Com2 modbus address 8 J1 1 2 3 Brown Black Blue Yellow White Red Yellow O W AL G Y2 Y1 C R Note 2 Note 2 ES NSB JP1 JP2 P3 COM NC2 COM NC1 NO2 NO1 R R COM 2 COM COM 1 Note 4 Optional Disconnect Switch G 277V 60HZ 1PH Power Supply Unit L1 L2 T2 T1 CC Blue Black 7 8 5 6 3 4 1 2 7 8 5 6 3 1 2...

Page 40: ...must rewire transformer R RC C Y1 AL G O Y2 Note 3 Typical 24VAC 2 Stage stat 4 L1 Com2 modbus address 8 J1 1 2 3 Brown Black Blue Yellow White Red Yellow O W AL G Y2 Y1 C R Note 2 Note 2 ES NSB JP1 JP2 P3 COM NC2 COM NC1 NO2 NO1 R R COM 2 COM COM 1 Note 4 Optional Disconnect Switch G 277V 60HZ 1PH Power Supply Unit L1 L2 T2 T1 CC Blue Black 7 8 5 6 3 4 1 2 7 8 5 6 3 1 2 Orange Orange Red Red Blac...

Page 41: ...start command to prevent nuisance safety trips 24V output to cycle a motorized water valve or other device with compressor contactor Water coil low temperature sensing dip switch selectable for water or anti freeze Two speed fan control of cooling and heating modes Removable thermostat connector Two dry contact accessory relays that can be cycled with the compressor or the fan Ability to work with...

Page 42: ...ostat selection Dip switch 3 is used to select the type of thermostat that will be used to control the unit A digital communicating thermostat can be purchased with the unit that will allow all fault signals to be displayed on the thermostat This allows for efficient troubleshooting and does not require that the technician access the electrical control box to determine the unit error If a digital ...

Page 43: ...re it recognizes the inputs as valid Once the input signals are determined to be valid the reversing valve will energize de energize after 5 seconds The microprocessor will then verify that the anti short cycling delay has been satisfied Once the anti short cycling delay has been satisfied the compressor will cycle on The blower will cycle on in high speed 15 seconds after the compressor is cycled...

Page 44: ...s for proper communicating thermostat operation Dip Switch Position Description 1 On 2 Varies depends on system temperatures 3 Off 4 On 5 On 6 Off 7 Off 8 Off Temperature adjustment Failure code display area On off power button Communicating thermostat Fan high low On off power button Sleep mode Temperature adjustment Mode heat cool or fan Electrical shock can cause personal injury or death When i...

Page 45: ...seconds and the timing will change to the hour To select the day of the week push the day button until the desired day of the week appears In this menu push the cancel button to cancel the timing of power on for that day If there is no timing of power on for that particular date will be displayed in the time display To exit the timed power on setting mode push the mode button two times Set or chan...

Page 46: ...and corner of the thermostat display If no failure code s are present the area on the thermostat display will be blank 1 Refrigerant hi pressure failure lockout after three times 2 Refrigerant low pressure failure lockout after three times 3 Not used 4 Freeze protection water side FP1 temperature failure lockout after three times 5 Freeze protection air side FP2 temperature failure lockout after t...

Page 47: ...2 Start up conditions are not normal or continuous operating conditions but may be used to bring the building space up to occupancy temperatures Units are not designed to operate under these conditions on a regular basis Table 13 Air limits Standard range units Extended range units Cooling Heating Cooling Heating Ambient air Minimum 50 F 10 C 50 F 10 C 50 F 4 C 50 F 4 C Maximum 100 F 38 C 85 F 29 ...

Page 48: ...r other equivalent approved cleaning agent Reset the boiler to raise the loop temperature to 100 F 38 C Circulate the solution for a minimum of 8 to 24 hours At the end of this period shut off the circulating pump and drain the solution Repeat system cleaning if desired When the cleaning process is complete remove the short circuited hoses Reconnect the hoses to the proper supply and return the co...

Page 49: ...flow that could erode heat exchangers System checkout System water temperature Check water temperature for proper range and also verify heating and cooling set points for proper operation System pH Check adjust water pH if necessary to maintain levels indicated in Table 5 Proper pH promotes longevity of hoses fittings System flushing Verify that all hoses are connected end to end when flushing to ...

Page 50: ...compressor is on and that the water flow direction is correct by measuring pressure drop through the heat exchanger Units have a 3 5 minute time delay in the control circuit that can be eliminated on the microprocessor control board See test mode described in the dip switch settings section refer to page 40 Check the elevation and cleanliness of the condensate lines Dripping may be a sign of a blo...

Page 51: ... the check described fails to reveal the problem and the unit still does not operate contact a trained service technician to ensure proper diagnosis and repair of the equipment When testing is complete set system to maintain desired comfort level Be certain to fill out and forward all warranty registration papers to Zehnder Rittling When the disconnect switch is closed high voltage is present in s...

Page 52: ... needed for closed loop systems However if the piping is known to have high dirt or debris content it is best to establish a periodic maintenance schedule with the owner so the water coil can be checked regularly Dirty installations are typically the result of deterioration of iron or galvanized piping or components in the system Open cooling towers requiring heavy chemical treatment and mineral b...

Page 53: ... Periodic maintenance oiling is not recommended as it will result in dirt accumulating in the excess oil and cause eventual motor failure Conduct annual dry operation check and amperage check to ensure amp draw is no more than 10 greater than indicated on serial plate data Air coil The air coil must be cleaned to obtain maximum performance Check once a year under normal operating conditions and if...

Page 54: ...Exploded view repair parts diagram Cabinet 52 ...

Page 55: ... 11100001876A 4 N A Double deflection with opposed blade grille 14 x 12 11100002859A 4 N A Double deflection with opposed blade grille 16 x 14 11100002860A Cabinet repair parts list Miscellaneous Item Qty Description Part number by unit model number 09 12 15 18 24 30 36 18 1 Electrical box cover 11716000573A 11716000574A 11716000575A 26 1 Drain pan 11100002770A 11100002771A 27 1 Drain pan trap 111...

Page 56: ...DK120 30 6F02 208 230V 11100001868A 7 1 Blower motor YDK120 90 4F01 208 230V 11100001869A 7 1 Blower motor YDK120 200 6F01 208 230V 11100001870A 25 1 Blower housing with cage 11100002893A 11100002769A N A Communicating thermostat with remote 11100002810A N A Thermostat digital non programmable 11716000009A N A Thermostat digital programmable 11716000013A N A Wiring harness for digital thermostat 1...

Page 57: ...Replacement parts Exploded view repair parts diagram Chassis 55 ...

Page 58: ...9 12 15 18 24 30 36 38 1 TXV 11100002755A 11100002756A 11100002757A 11100002758A 39 1 Air coil assembly 11100021067A 11100021068A 11100021069A 11100021070A 11100021071A 40 1 Coax 11100002748A 11100002749A 11100002750A 11100002752A 11100002753A 41 1 Receiver N A 11100002767A 42 2 1 4 Schrader valve 11100002783A 43 1 Filter dryer 11100001862A 44 1 Filter washable 11100002805A 11100002806A 1110000280...

Page 59: ...Off Off On Off Off Blower failure cooling Condensate overflow ER 9 ER 10 Off Flash Off Flash Off On Off On Clogged drain line Over under low voltage protection 18 VAC voltage 30VAC ER 11 Off Flash Flash Flash Off On On On Loss of power brown out LWT sensor failure low water temperature ER 13 Flash Off Off Off N a N a N a N a Sensor resistance above or below specification DAT sensor failure dischar...

Page 60: ...mode Ball valves closed heat mode Faulty zone valve heat mode Main water pump inoperable heat mode Dirty water strainer heat mode Refrigerant charge quantity below factory recommendation OFF X OFF OFF Er 5 Freeze protection air side 35 F Blower failure cooling Dirty air filter cool mode Airflow by passing air coil through due to poor sealing of cabinet openings cool mode Return air too cool cool m...

Page 61: ...hen be de energized and the blower will de energize fifteen seconds after the compressor is de energized Condensate overflow 1 lockout CO1 The unit contains one condensate overflow sensor located in the chassis drain pan below the air coil A condensate lockout will occur if the sensor senses condensate for thirty continuous seconds The compressor will then be de energized and the blower will de en...

Page 62: ...15 09 16 0 60 8 14 09 14 28 14 48 17 0 62 6 13 53 13 71 13 90 18 0 64 4 13 00 13 17 13 34 19 0 66 2 12 50 12 65 12 81 C F Minimum K Standard K Maximum K 20 0 68 0 12 01 12 16 12 31 21 0 69 8 11 55 11 69 11 82 22 0 71 6 11 11 11 24 11 36 23 0 73 4 10 69 10 81 10 92 24 0 75 2 10 29 10 39 10 50 25 0 77 0 9 90 10 00 10 10 26 0 78 8 9 523 9 623 9 723 27 0 80 6 9 163 9 263 9 363 28 0 82 4 8 819 8 918 9 ...

Page 63: ... air temperature supply F Water side Water inlet temperature F Pressure psig Water outlet temperature F Pressure psig Refrigeration side Compressor suction side temperature F Compressor discharge side temperature F Compressor suction side pressure psig Compressor discharge side pressure psig Expansion valve temperature entering valve F Expansion valve temperature leaving valve F Heating cycle Air ...

Page 64: ...er from Zehnder Rittling Extended warranties may be available please contact the factory for warranty options and pricing 716 827 6510 Important Obligations of purchaser not included in this warranty Failure to start due to voltage conditions blown fuses or other damage due to inadequacy or interruption of electrical service Filter replacement or cleaning of evaporator coil condenser coil or heat ...