Page 1 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A York International Corporation, 5005 5943356-UIM-A-1020 York Drive, Norman, OK 73069 2020-10-01 Johnson Controls Ducted Systems...
Page 2 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 3: Table Of Contents
Welded gas valve relay response......88 Optional Gas Heat..........54 Cooling start-up............89 Gas Piping............54 Prestart Check List..........89 Gas Connection..........54 Operating instructions......... 89 Combustion Air and Flue Exhaust....55 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 4 Two Stage..............92 Adjustment Of Temperature Rise........ 93 Burners/Orifices Inspection/Servicing......93 Troubleshooting..............95 Charging Tables ZXA7, ZX08 to 14........ 98 Smart Equipment™ Control Board Navigation Components................ 103 Start-Up Sheet..............104 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 5: General
This product must be installed in strict compliance with the installation instructions and any applicable local, state and national codes including, but not limited to building, electrical, and mechanical codes. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 6: Inspection
Contact your local Ducted Systems parts distribution center for authorized replacement parts. Approvals Design certified by CSA as follows: For use as a cooling only unit, cooling unit with a forced air furnace. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 7 CAUTION This system uses R-410A Refrigerant which operates at higher pressures than R-22. No other refrigerant may be used in this system. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 8: Nomenclature
Nomenclature INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 9: Installation
CAUTION 208/230-3-60 and units with factory installed Powered Convenience Outlet Option are wired for 230v power supply. Change tap on transformer for 208-3-60 operation. See unit wiring diagram. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 10 See Figure 4 for the factory RAT sensor location and Figure 5 for the sensor Then slide the flex tube over the stub and relocation. tighten, see Figure 7. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 11 Figure 7: Return air smoke detector - working position position Controller Flex tube secured to the bracket Return air sensor Return air sensor Flex tube in the working position Controller Wire tie INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 12: Limitations
Installer must make 12 (10) 460-3-60 provisions for adequate combustion and ventilation 575-3-60 air in accordance with section 5.3 of Air for Combustion and Ventilation of the National Fuel INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 13: Rigging And Handling
All panels must be secured in place when the unit is lifted. The condenser coils should be protected from rigging cable damage with plywood or other suitable material. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 14: Zxa7, 08-14 Unit Weights
Hail Guard Kit Large Short Factory Installed Hail Guard Kit Large Tall Factory Installed Flue Extension Kit (1FE0416) Curb Rigid 14 in. Large Footprint Curb Rigid 24 in. Large Footprint INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 15 Figure 11: ZXA7 Unit Dimensions INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 16 Figure 12: ZX08 Unit Dimensions INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 17 Figure 13: ZX09/12 Unit Dimensions INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 18 Figure 14: ZX14 Unit Dimensions INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 19 Note: If utilities are required thru the base of the unit or thru the roof curb the following field installed accessories can be purchased thru your dealer or contractor: INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 20: Ductwork
A closed return duct system should be used. This cover so it is not directly exposed to the heating will not preclude use of economizers or outdoor elements.The panels are secured by sliding them INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 21: Condensate Drain
Figure 20: Condensate Drain Note: Shown with duct connection cover panel as shipped. Figure 18: Bottom Return Opening For Side Duct Conversion INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 22: Compressors
Factory installed disconnects are available. If installing a disconnect (field supplied), refer to Figure 12 thru Figure 14 for the recommended mounting location. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 23: Thermostat Wiring
Note: Check all three phase motors and compressors for proper rotation after making a change. If it is necessary to change 3 phase motor rotation, swap A or L1 and C or L3 only. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 24: Typical Field Power And Control Wiring
Typical Field Power and Control Wiring Typical Power Wiring Figure 21: Everyday Thermostat Control (ETC) typical power wiring INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 25 Figure 22: Typical Smart Equipment™ Control Wiring INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 26: Electrical Data
11625 38.5 62.5 63.8 None 18.9 19.4 10646 18.9 19.4 460-3-60 8.5 66.1 11146 11.5 13.8 24.4 25.1 11446 16.8 28.2 28.8 575-3-60 6.3 55.3 None 16.5 16.9 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 27 33.2 460-3-60 12846 27.8 33.4 48.9 50.2 13346 39.7 56.8 58.1 14246 41.7 50.2 69.9 71.2 None 19.9 20.7 575-3-60 11758 16.4 25.8 26.8 13458 32.7 46.2 47.2 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 28 Non-fused Disconnect. Verify on the unit nameplate that the disconnect is properly sized for the application. Units with field installed electric heat kits may exceed the factory installed disconnect amperage rating. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 29: Zxa7, 08 To 14 High Static Indoor Blower - With Powered Convenience Outlet
19.8 33.3 34.6 460-3-60 12846 27.8 33.4 50.3 51.6 13346 39.7 58.2 59.4 14246 41.7 50.2 71.3 72.6 None 17.7 18.5 575-3-60 11758 16.4 13458 32.7 48.4 49.4 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 30 33.4 52.8 54.1 13346 39.7 60.7 61.9 14246 41.7 50.2 73.8 75.1 None 22.3 23.1 575-3-60 5.7 38.9 5.8 38.9 11758 16.4 29.4 30.4 13458 32.7 49.8 50.8 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 31 Non-fused Disconnect. Verify on the unit nameplate that the disconnect is properly sized for the application. Units with field installed electric heat kits may exceed the factory installed disconnect amperage rating. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 32: Zxa7, 08 To 14 High Static Indoor Blower - Without Powered Convenience Outlet
30.6 31.9 460-3-60 12846 27.8 33.4 47.6 48.9 13346 39.7 55.5 56.8 14246 41.7 50.2 68.6 69.9 None 16.8 575-3-60 11758 16.4 25.9 26.9 13458 32.7 46.3 47.3 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 33 12846 27.8 33.4 50.1 51.4 13346 39.7 59.3 14246 41.7 50.2 71.1 72.4 None 20.6 21.4 575-3-60 5.7 38.9 5.8 38.9 11758 16.4 27.3 28.3 13458 32.7 47.6 48.6 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 34 Non-fused Disconnect. Verify on the unit nameplate that the disconnect is properly sized for the application. Units with field installed electric heat kits may exceed the factory installed disconnect amperage rating. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 35: Zxa7, Zx08 To 14 Medium Static Indoor Blower - Without Powered Convenience Outlet
29.9 31.1 460-3-60 12846 27.8 33.4 46.9 48.1 13346 39.7 54.8 14246 41.7 50.2 67.9 69.1 None 14.9 15.7 575-3-60 11758 16.4 24.5 25.5 13458 32.7 44.9 45.9 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 36 33.4 47.6 48.9 13346 39.7 55.5 56.8 14246 41.7 50.2 68.6 69.9 None 19.5 20.3 575-3-60 5.7 38.9 5.8 38.9 11758 16.4 25.9 26.9 13458 32.7 46.3 47.3 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 37 Non-fused Disconnect. Verify on the unit nameplate that the disconnect is properly sized for the application. Units with field installed electric heat kits may exceed the factory installed disconnect amperage rating. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 38: Zxa7, Zx08 To 14 Medium Static Indoor Blower - With Powered Convenience Outlet
19.8 32.6 33.8 460-3-60 12846 27.8 33.4 49.6 50.8 13346 39.7 57.4 58.7 14246 41.7 50.2 70.6 71.8 None 16.6 17.4 575-3-60 11758 16.4 26.7 27.7 13458 32.7 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 39 460-3-60 12846 27.8 33.4 50.3 51.6 13346 39.7 58.2 59.4 14246 41.7 50.2 71.3 72.6 None 21.2 575-3-60 5.7 38.9 5.8 38.9 11758 16.4 13458 32.7 48.4 49.4 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 40 Non-fused Disconnect. Verify on the unit nameplate that the disconnect is properly sized for the application. Units with field installed electric heat kits may exceed the factory installed disconnect amperage rating. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 41: Zxa7, 08 To 14 Standard Static Indoor Blower - Without Powered Convenience Outlet
11746 16.5 19.8 29.3 30.5 460-3-60 12846 27.8 33.4 46.3 47.5 13346 39.7 54.1 55.4 14246 41.7 50.2 67.3 68.5 None 14.2 575-3-60 11758 16.4 23.6 24.6 13458 32.7 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 42 12846 27.8 33.4 46.3 47.5 13346 39.7 54.1 55.4 14246 41.7 50.2 67.3 68.5 None 17.7 18.5 575-3-60 5.7 38.9 5.8 38.9 11758 16.4 23.6 24.6 13458 32.7 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 43 Non-fused Disconnect. Verify on the unit nameplate that the disconnect is properly sized for the application. Units with field installed electric heat kits may exceed the factory installed disconnect amperage rating. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 44: Physical Data Zxa7, 08 To 14
Direct Direct CONDENSER Quantity of motors FAN DATA Motor HP each No. speeds 900 / 1150 900 / 1150 Nominal total CFM 3600 / 4600 3600 / 4600 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 45 4 - (16 x 16 x 2) 4 - (16 x 16 x 2) FILTERS Quantity - Size 2 in. Throwaway, Standard, MERV 4 (Minimum Efficiency Reporting Value). INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 46 Fan diameter (Inch) Type Prop Prop Drive type Direct Direct CONDENSER Quantity of motors FAN DATA Motor HP each No. speeds 1085 1085 Nominal total CFM 7600 7600 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 47 4 - (16 x 20 x 2) 4 - (16 x 20 x 2) FILTERS Quantity - Size 2 in. Throwaway, Standard, MERV 4 (Minimum Efficiency Reporting Value). INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 48 Fan diameter (Inch) Type Prop Prop Drive type Direct Direct CONDENSER Quantity of motors FAN DATA Motor HP each No. speeds 1085 1085 Nominal total CFM 8600 8600 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 49 4 - (20 x 20 x 2) 4 - (20 x 20 x 2) FILTERS Quantity - Size 2 in. Throwaway, Standard, MERV 4 (Minimum Efficiency Reporting Value). INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 50 Fan diameter (Inch) Type Prop Prop Drive type Direct Direct CONDENSER Quantity of motors FAN DATA Motor HP each No. speeds 1085 1085 Nominal total CFM 8600 8600 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 51 4 - (20 x 20 x 2) 4 - (20 x 20 x 2) FILTERS Quantity - Size 2 in. Throwaway, Standard, MERV 4 (Minimum Efficiency Reporting Value). INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 52 Prop Prop Drive type Direct Direct CONDENSER Quantity of motors FAN DATA Motor HP each 1 1/2 1 1/2 No. speeds 1140 1140 Nominal total CFM 10600 10600 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 53 4 - (20 x 20 x 2) 4 - (20 x 20 x 2) FILTERS Quantity - Size 2 in. Throwaway, Standard, MERV 4 (Minimum Efficiency Reporting Value). INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 54: Optional Gas Heat
3/4 in. 1 in. 1-1/4 in. flexible gas appliance connector, always use a 1050 new listed connector. Do not use a connector which has previously serviced another gas appliance. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 55: Combustion Air And Flue Exhaust
See Figure 24 for location of the hood within the unit and Figure 25 for installation of the hood. If necessary, a flue exhaust extension may be installed at the point of installation. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 56: Options/Accessories
Economizer accessories include complete instructions for installation. There are two Economizer options. Each is specific to footprint and unit voltage: Vertical Flow application with barometric relief standard. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 57: Blower Rotation
Table 19: Supply Air Limitations Supply Air (CFM) Model (Size) Minimum Maximum ZXA7 (6) 1800 3000 ZX08 (7.5) 2250 3750 ZX09 (8.5) 2550 4250 ZX12 (10) 3000 5000 ZX14 (12.5) 3750 6000 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 58: Belt Tension
0.817 0.787 0.758 0.730 0.702 0.676 0.964 0.929 0.897 0.864 0.833 0.802 0.772 0.744 0.716 0.689 0.663 0.946 0.912 0.880 0.848 0.817 0.787 0.758 0.730 0.703 0.676 0.651 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 59 Review the BHP compared to the motor options available. Select the appropriate Sea level static pressure = 1.4" / .832 = 1.68" motor and, or drive. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 60 1078 RPM is within the range of the 3 HP drives. Using the 3 HP motor and drive, 1/2 turns open will achieve 1078 RPM. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 61: Airflow Performance
0.25 0.29 14 (12.5) 4800 0.22 0.91 0.31 0.30 0.34 5200 0.24 1.04 0.35 0.35 0.39 5600 0.26 1.17 0.39 0.41 0.45 6000 0.28 1.30 0.43 0.48 0.52 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 62: Zxa7, 08-14 Side Duct Application (Belt Drive)
Standard Static Option with Motor rated at 2.4-hp Medium Static Option with Motor rated at 2.9-hp High Static Option with Motor rated at 3.7-hp Exceeds recommended Blower speed INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 63 Standard Static Option with Motor rated at 2.4-hp Medium Static Option with Motor rated at 3.7-hp High Static Option with Motor rated at 5.25-hp Exceeds recommended Blower speed INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 64 Medium Static Option with Motor rated at 3.7-hp High Static Option with Motor rated at 5.25-hp Bold Field-supplied BK95 x 1 fixed pulley (p/n 1074787) with Motor rated at 5.25-hp Exceeds recommended Blower speed INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 65: Zxa7, 08-14 Bottom Duct Application (Belt Drive)
1067 2.85 Standard Static Option with Motor rated at 2.4-hp Static Option with Motor rated at 2.9-hp Static Option with Motor rated at 3.7-hp Exceeds recommended blower speed INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 66 1150 4.62 Standard Static Option with Motor rated at 2.4-hp Static Option with Motor rated at 3.7-hp Static Option with Motor rated at 5.25-hp Exceeds recommended blower speed INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 67 Standard Static Option with Motor rated at 2.4-hp Medium Static Option with Motor rated at 3.7-hp High Static Option with Motor rated at 5.25-hp Exceeds recommended blower speed INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 68: Rpm Selection
At unit start-up, the measured CFM may be higher or lower than the required CFM. To achieve the required CFM, the speed of the drive may have INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 69 Verify proper sheave alignment; tighten blower pulley and motor sheave set screws after these adjustments. Re-checking set screws and belt tension after 10-12 hrs. run time is recommended. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 70 The pressure drop through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air duct is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 71: Everyday Thermostat Control (Etc)
Thermostat Connection Alarm Indication (24VAC Rectified) Thermostat Connection 24VAC Connection Thermostat Connection No Connection Thermostat Connection 24VAC Common ConnectionLimit For Internal Use Only No Connection (For Future Use) INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 72 VFD will run at 67% speed. When Y2 is energized, FAN2 output 2 will energize and the VFD will run at 100% (but only if C1 is “on”). INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 73 9 pulses GV lost proof 10 pulses 2nd stage in Rapid flash ASCD (heat/cool) 2nd stage on (heat/cool) 1st stage in Rapid flash ASCD (heat/cool) 1st stage On (heat/cool) INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 74 2 to 5 seconds: clear anti-short cycle timers Normal idle Slow heartbeat and reset any active lockouts Factory test mode Rapid flash Rapid flash • > 5 seconds: clear all fault history INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 75: Smart Equipment™ Unit Control Board
SD-24 and R 24 VAC common for thermostat power INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 76 Input required for operation of 2-compressor units, not active for 1-compressor units; 3.625 EC2+ input from 10KΩ @ 77°F, Type III negative temperature VDC reading EC2+ to EC2– with open circuit. Used in suction line temperature safety. coefficient thermistor INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 77 Not effective for one stage compressor UCBs. If demand is present and permissions 24 VAC hot output for compressor 2 allow compressor 2 operation; output with compressor cooling, comfort ventilation cooling or heat pump heating demands INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 78 FDD board parameters ENTER Button for display menu acknowledgment and navigation Button for display menu navigation and zeroing of active compressor CANCEL ASCD timer 4-way Joystick for display menu navigation INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 79 Be sure the cable you use fits the modular jack housing. The preassembled cables that are available from Anixter (Part No. CBL-NETWORKxxx) use 24 gauge wire. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 80: Operation
Smart Equipment™, “Y1” a cooling or heating operation is requested. The energizes the compressor and condenser fan motor blower is energized after any specified delay only. associated with the operation. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 81 Should a freezestat open three times within two hours of operation, the UCB will lock-out the associated compressor and flash a code on the ETC. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 82 The UCB will initiate a flash code on the ETC, or send an error message to the LCD Display on Smart Equipment™ associated with errors within the system. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 83: Electric Heating Sequence Of Operations
If the temperature limit opens three times within are in the expected state, then the ICB energizes one hour, the UCB will lock-on the indoor blower the draft motor and verifies that the centrifugal INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 84: Gas Heat Operation Errors
UCB forces the indoor blower on for the indoor temperature sensitive switch can sense the blower heating off delay. temperature of the heat exchanger tubes. On single INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 85 If the flame is unstable or lost more than 16 times during the same call for heat, then the ICB will lock out furnace operation for 5 minutes. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 86: Indoor Air Quality Aq
LIMIT input 3 times in 1 hour, an alarm appears and the FAN output is energized. The heating H1 and H2 outputs are de-energized until the alarm is cleared. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 87: Gas Heat Ignition Control Board Function
If low pressure switch opens, the control de- trial. The control de-energizes the spark when flame energizes the gas valve and begins pressure switch is sensed and enters a flame stabilization period. proving mode. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 88: Post Purge
If the limit switch recloses in this hard lockout condition, the inducer will run a post purge and then shutoff. The control shall remain INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 89: Cooling Start-Up
First stage compressors will energize after the built-in time delay (five minutes). Post Start Check List Verify proper system pressures. Measure the temperature drop across the evaporator coil. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 90: Gas Heat Start-Up
After the entire control circuit has been energized and the heating section is operating, make the following checks: Check for gas leaks in the unit piping as well as the supply piping. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 91: Checking Gas Heat Input
By actual measurement, it takes 19 seconds for the hand on a 1 cubic foot dial to make a revolution with a 200,000 Btuh furnace running. To determine rotations INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 92: Manifold Gas Pressure Adjustment
If necessary, using a screwdriver, turn the first stage adjustment screw (adjacent to the “LO” marking on the valve) clockwise to increase manifold pressure or counterclockwise to decrease manifold pressure. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 93: Adjustment Of Temperature Rise
National Fuel Gas Code, ANSI Z223.1/NFPA 54 or National Standard of Canada, Natural Gas and Propane Installation Code, CSA B149.1. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 94 Figure 32: 6 Thru 12.5 Ton 3/4” Two Stage Gas Valve INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 95: Troubleshooting
60 minute excessive voltage, RF interference, etc. should be investigated. "watchdog" timer. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 96 Verify wiring for main and auxiliary limit switches is intact. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 97 1 second at the first stage and/or second stage gas valve output (P1-7 pin and/or P1-4 pin) when the gas valve is commanded on by the ignition control INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 98: Charging Tables Zxa7, Zx08 To 14
Delta T Db Compr. amps 300 Cfm/Ton 80/62 300 Cfm/Ton 80/67 300 Cfm/Ton 80/72 300 Cfm/Ton 75/62 400 Cfm/Ton 80/62 400 Cfm/Ton 80/67 400 Cfm/Ton 80/72 400 Cfm/Ton 75/62 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 99 300 Cfm/Ton 80/67 10.6 300 Cfm/Ton 80/72 10.8 300 Cfm/Ton 75/62 10.5 400 Cfm/Ton 80/62 10.6 400 Cfm/Ton 80/67 10.7 400 Cfm/Ton 80/72 10.8 400 Cfm/Ton 75/62 10.5 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 100 300 Cfm/Ton 80/72 10.9 12.2 300 Cfm/Ton 75/62 10.8 12.0 400 Cfm/Ton 80/62 11.0 12.2 400 Cfm/Ton 80/67 11.0 12.3 400 Cfm/Ton 80/72 11.1 12.3 400 Cfm/Ton 75/62 10.9 12.2 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 101 300 Cfm/Ton 75/62 13.0 14.6 11.4 400 Cfm/Ton 80/62 12.8 14.2 11.3 400 Cfm/Ton 80/67 12.8 14.3 11.2 400 Cfm/Ton 80/72 12.8 14.3 11.3 400 Cfm/Ton 75/62 12.8 14.2 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 102 300 Cfm/Ton 75/62 12.5 13.9 11.0 400 Cfm/Ton 80/62 12.3 13.6 11.0 400 Cfm/Ton 80/67 12.4 13.8 10.9 400 Cfm/Ton 80/72 12.4 13.9 11.0 400 Cfm/Ton 75/62 12.3 13.6 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 103: Smart Equipment™ Control Board Navigation Components
Smart Equipment™ Quick Start Guide. Note: For more in-depth sequence of operation of the Smart Equipment™ control, refer to the Smart Equipment™ Controls Sequence of Operation Overview LIT-12011950. INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 104: Start-Up Sheet
Start-Up Sheet INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 105 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 106 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 107 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 108 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...
Page 109 INSTALLATION MANUAL ZX SERIES 6 - 12.5 Ton 60 Hertz R-410A Johnson Controls Ducted Systems...

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