York 41HP AHR18B, Installation Manual

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Page 2: ...ervice personnel can perform basic maintenance functions such as cleaning and replacing the air filters When work ing on heating cooling equipment observe precautions in the man uals and on the labels...

Page 3: ...secondary drain It should be piped to a loca tion that will give the occupant a visual warning that the primary drain is clogged If the secondary drain is not used it must be capped 5 When an evaporat...

Page 4: ...ort bracket See Figure 5 This positions the deflector below the feeder tubes to channel the condensate to the drain pan DUCT FLANGES Four flanges are provided to attach ductwork to the furnace These f...

Page 5: ...is recommended a block off plate approximately 8 in height and running the full width of the ple num be attached to the supply opening Please refer to Figure 8 as a visual aid The use of this block o...

Page 6: ...ed and piped to a location that will give the occupant a visual warning that the primary drain is clogged If the secondary drain is not used it must be capped The drain pan connections are designed to...

Page 7: ...um wiring to air handlers is not approved If aluminum conductors are present all applicable local and national codes must be followed when converting from aluminum to copper con ductors prior to conne...

Page 8: ...require ments Read and heed all unit caution labels It is possible to vary the amount of electric heat turned on during the defrost cycle of a heat pump Standard wiring will only bring on the first s...

Page 9: ...4 11 5 32 0 39 2 3 1 3 8 9 4 11 5 6HK 1 2 6501506 14 4 10 8 13 2 36 9 45 1 3 6 4 4 10 8 13 2 6HK 1 2 6501806 17 3 13 0 15 9 44 3 54 2 6 5 7 9 13 0 15 9 6HK 1 2 6502006 19 2 14 4 17 6 49 2 60 2 7 2 8...

Page 10: ...and local codes TABLE 6 ELECTRICAL DATA FOR SINGLE SOURCE POWER SUPPLY 208 230 1 60 Continued Air Handler Models Heater Models1 2 Heater Amps 240V Field Wiring Min Circuit Ampacity MOP 3 Min Wire Siz...

Page 11: ...L DATA FOR MULTI SOURCE POWER SUPPLY 208 230 3 60 Air Handler Models Heater Models Total Heater Amps 240V Min Circuit Ampacity MOP1 Min Wire Size AWG 2 208V 230V 208V 230V 208V 230V Circuit Circuit Ci...

Page 12: ...t AHR18B3XH21 High 1145 1100 1055 1005 930 845 725 Medium 755 750 725 665 605 485 435 Low 680 655 625 585 540 395 300 AHR24B3XH21 High 1305 1285 1225 1175 920 915 835 Medium 930 920 890 845 705 760 50...

Page 13: ...661693 UIM E 1212 Johnson Controls Unitary Products 13 SECTION X WIRING DIAGRAM FIGURE 15 Wiring Diagram PSC Single Phase Heat Kits...

Page 14: ...NT CODES GND EQUIPMENT GROUND FL FUSIBLE LINK HE HEATING ELEMENT LS LIMIT SWITCH REL RELAY FIELD POWER WIRING 208 230V FACTORY WIRING 208 230V FACTORY WIRING LOW VOLTAGE L1 L2 L3 L1 L2 L3 GND GND GND...

Page 15: ...661693 UIM E 1212 Johnson Controls Unitary Products 15 SECTION XI TYPICAL THERMOSTAT CONNECTIONS FIGURE 17 Typical Wiring Diagram PSC...

Page 16: ...dry bulb temperature Return air dry bulb temperature Temperature drop 1 2 3 4 5 Low Medium Low Medium Medium High High A B C D Outside air dry bulb temperature Return air wet bulb temperature Supply a...

Page 17: ...he thermostat noting and correcting any problems Operate the unit through mechanical heating cycles from the thermostat noting and correcting any problems Operate the unit through emergency heating cy...

Page 18: ...o change without notice Published in U S A 661693 UIM E 1212 Copyright 2012 by Johnson Controls Inc All rights reserved Supersedes 661693 UIM D 1012 York International Corp 5005 York Drive Norman OK 7...