Vista VAF-24A308I, Owner'S Manual

Page 1: ...Thank you for choosing Commercial Air Conditioners please read this owner s manual carefully before operation and retain it for future reference Air Handler Commercial Air Conditioners Owner s Manual ...

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Page 3: ...lacement Parts 4 3 Important Safety Instructions 4 3 1 Recognize Safety Symbols Words and Labels 4 3 2 Unit Inspection 5 4 Location 5 5 Ductwork 6 6 Electric Heat 6 6 1 VAFd Electric Heater Kits Available 8 6 2 VAFd Heater Kits Installation 8 7 Electrical Supply Wire and MOP 9 7 1 Inspection of the Building Electrical Service 9 7 2 Wire Sizing 10 7 3 Maximum Overcurrent Protection MOP 11 7 4 Elect...

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Page 5: ...Wiring Diagram 12 7 6 Thermostat Wiring 13 8 Refrigerant Pipe 13 8 1 Piping Preparation 13 8 2 Special Instructions 14 9 Drain Pan Refit 15 10 Condensate Removal 16 11 Start Up Procedure 16 12 Regular Maintenance 17 ...

Page 6: ...table 2 Model Cooling capacity Blower inch Nominal SCFM Electric heat kw 2 0 Ton 9 5 8 706 0 10 3 0 Ton 10 10 1150 0 20 3 5 Ton 11 11 1300 0 20 4 5 Ton 11 11 1420 0 20 table 3 table 4 Filters Model Filter size inch 19 5 16 X21 1 8 X1 19 5 16 X21 1 8 X1 20 5 16 X23 X1 20 5 16 X23 X1 Shipping Data Model Net Wt Gross Wt Loading QTY 40 Container VAF 24A308I 126 135lb 154 VAF 36A308I 139 152lb 112 VAF ...

Page 7: ...81 2 1326 8 1441 6 0 16 666 6 1147 1300 4 1420 5 0 2 623 4 1113 1 1288 6 1400 6 0 24 576 4 1083 0 1271 4 1379 4 0 28 514 1 1055 8 1242 8 1357 8 0 32 452 3 1014 8 1214 3 1335 3 0 36 384 2 963 1 1208 1 1312 1 0 4 306 4 906 5 1182 5 1288 5 Notes Based upon W nominal tonnage dry coil and filter should be installed Use 0 96 as approximate CFM correction factor for wet coil See the following table for h...

Page 8: ...odes Regulations DANGER IMMEDIATE HAZARDS WHICH WILL RESULT IN PROPERTY DAMAGE PRODUCT DAMAGE SEVERE PERSONAL INJURY OR DEATH WARNING HAZARDS OR UNSAFE PRATICES COULD RESULT IN PROPERTY DAMAGE PRODUCT DAMAGE SEVERE PERSONAL INJURY OR DEATH CAUTION HAZARDS OR UNSAFE PRACTICES WHICH MAY RESULT IN PROPERTY DAMAGE PRODUCT DAMAGE SEVERE PERSONAL INJURY OR DEATH WARNING BEFORE SERVING OR INSTALLING THIS...

Page 9: ... damage WARNING THIS PRODUCT IS FACTORY SHIPPED FOR USE WITH A 208 230 1 60 ELECTRICAL POWER SUPPLY THIS AIR HANDLER MUST NOT BE RECONFIGURED TO OPERATE WITH ANY OTHER POWER SUPPLY WARNING DUE TO HIGH SYSTEM PRESSURE AND ELECTRICAL SHOCK IN POTENTIAL INSTALLATION AND SERVICE WORK CAN BE DANGEROUS ONLY TRAINED AND QUALIFIED PERSONNELS ARE PERMITTED TO INSTALL OR SERVICE THIS EQUIPMENT OBSERVE ALL W...

Page 10: ...on can be re circulated throughout the building if the furnace or air handler is operating in any mode CO can cause serious illness including permanent brain damage or death 3 2 Unit Inspection Upon delivery inspect the unit for damage Any damage must be reported immediately to the carrier Do not install such an equipment damaged by freight which determines the integrity and safety of the unit Ple...

Page 11: ...e airflow speed And keep the ductwork sealed with good hermeticity Return Ductwork Do not place the duct inlet at a place where is filled with toxic gas or harmful fume odor For upflow configuration duct terminal connects to the bottom of the air handler Return Air Filters Each installation must include a return air filter This filtering may be performed at the air handler or externally such as a ...

Page 12: ...20 30 40 1000 16 24 32 48 1200 13 20 27 40 53 1400 11 17 23 34 46 1600 10 15 20 30 40 1800 9 13 18 27 36 220 1 60 Supply Voltage Temperature Rise Table ºF table 10 CFM HEATER KIT NOMINAL KW 5 8 10 15 20 600 25 37 50 800 19 28 38 1000 15 22 30 46 1200 13 19 25 38 56 1400 11 16 22 33 48 1600 9 14 19 28 42 1800 8 12 17 25 37 208 1 60 Supply Voltage Temperature Rise Table ºF Note For installations not...

Page 13: ...R PROTECTION MUST BE PROVIDED AT THE SUPPLY WIRE ENTRANCE INTO CABINET USE COPPER CONDUCTORS ONLY INSTALLATION MUST FOLLOW NATIONAL ELECTRIC CODE AND OTHER APPLICABLE CODES IF THIS APPLIANCE IS INSTALLED IN AN ENCLOSED AREA SUCH AS A GARAGE OR UTILITY ROOM WITH ANY CARBON MONOXIDE PRODUCING APPLIANCE ENSURE THE AREA IS PROPERLY VENTILATED 1 Refer to Table 11 for appropriate VAFd heater kit 2 Check...

Page 14: ...THE GROUNDING PIECE LOCATED IN THE UNIT CONTROL BOX AND ALSO CONNECTING TO THE BUILDING ELECTRIC SERVICE PANEL OTHER METHODS OF GROUNDING ARE PERMITTED IF PERFORMED IN ACCORDANCE WITH THE NATIONAL ELECTRIC CODE NEC AMERICAN NATIONAL STANDARDS INSTITUTE ANSI NATIONAL FIRE PROTECTION ASSOCIATION NFPA 70 AND LOCAL STATE CODES IN CANADA ELECTRIC GROUDING CONFORMS TO THE CANADIAN ELECTRIC CODE CSA C22 ...

Page 15: ...47 1 45 1 60 60 50 50 1420 55000 5 3 8 29 3 25 8 30 25 8 6 44 9 39 3 45 40 10 7 5 55 3 48 3 60 50 15 11 3 55 3 26 0 48 3 22 5 60 30 50 25 20 15 55 3 52 1 48 3 45 1 60 60 50 50 Wire size allows for no more than a 2 voltage drop from the building breaker fuse panel to the unit Refer to the latest edition of the National Electric Code NEC in USA or the Canadian Electric Code CSA in Canada when determ...

Page 16: ...ved means Check the unit wiring diagram attached for reference Air Handler with Heater Kits Non Circuit Breaker The power supply should be connected to the stripped black and red wires on the heater kit Air Handler with Heater Kits Containing Circuit Breaker VAFd models with a B suffix contain a circuit breaker s The air handler has a plastic cover on the access panel that will require either one ...

Page 17: ...Air Handler 12 7 5 Schematic Wiring Diagram Figure 2 Wiring Diagram VAF 24A308I Figure 3 Wiring Diagram VAF 36A308I VAF 42A308I VAF 55A308I ...

Page 18: ...working with cooling only condensing unit 7 6 Thermostat Wiring INDOOR UNIT OUTDOOR UNIT WIRED CONTROLLER Figure 4 8 Refrigerant Pipe WARNING WHEN WELDING ON THE PAINTED SURFACES OF THE UNIT QUENCHING CLOTH IS STRONGLY ADVISED TO PREVENT SCORCHING OR DAMAGING THE UNIT SURFACES SOLDER WITH A MINIMUM OF 5 SILVER IS RECOMMENDED WARNING THIS PRODUCT IS FACTORY SHIPPED UNDER PRESSURE FOLLOW THESE INSTR...

Page 19: ...rader valve and white teflon seal from the liquid line distributor 3 Remove cap closure from suction line 4 Take the tailpiece from the plastic accessory bag and slide the 13 16 nut into place 5 Braze tailpiece to the line set liquid tube 6 Insert the suction line into the connection slide the rubber grommet at least 18 away from the braze joint Braze suction line 7 After the tailpiece has been co...

Page 20: ...n area that allows for access to all sides 1 Disassemble the front panel 2 Remove the J shaped hook that fixing the evaporator coil Remove the fixed board that fixed under the drain pan 3 Draw out the evaporator coil and the drain pan in horizontal 4 Reset the drain pan in vertical at the right side of the evaporator coil Note Push the evaporator coil backwards and make sure that there is no gap b...

Page 21: ... condensate removal pump will be cut off to control voltage A trap must be installed between the unit and the condensate removal pump 11 Start Up Procedure Prior to start up ensure that all electrical connections are properly sized and tightened All panels must be in place and secured For air tight application rubber gasket must be positioned at prescribed locations to achieve 2 leakage Tubing mus...

Page 22: ... PERSONAL INJURY OR DEATH The only item to be maintained on a regular basis by the user is the circulating air filter s Filter should be cleaned or replaced regularly A certified service technician must perform all other services This product must not be disposed together with the domestic waste This product has to be disposed at an authorized place for recycling of electrical and electronic appli...

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