Table of Contents
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R-410A
ZK SERIES W/SMART EQUIPMENT™
6-1/2 - 12-1/2 Ton
60 Hertz
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Preceding installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Limitations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Unit components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Rigging and handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Side panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Condensate drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Compressors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Power and control wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Optional electric heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Optional gas heat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Options and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Economizer sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Dry bulb changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Single enthalpy changeover . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Dual enthalpy changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Auto . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
1 Component location table . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 ZK-06 through -12 unit limitations . . . . . . . . . . . . . . . . . . . . . . 8
3 Weights and dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4 ZK-06 through -12 unit accessory weights . . . . . . . . . . . . . . 10
5 ZK-06 through -12 unit physical dimensions . . . . . . . . . . . . . 11
6 ZK-06 through -12 unit clearances . . . . . . . . . . . . . . . . . . . . 11
7 Side duct dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8 Left/end duct dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
9 Roof curb components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
10 Control wire sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
11 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
12 ZK-06 through -12 physical data . . . . . . . . . . . . . . . . . . . . . . 28
13 Electric heat minimum supply air . . . . . . . . . . . . . . . . . . . . . . 30
14 Gas application data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
15 Gas pipe sizing - capacity of pipe . . . . . . . . . . . . . . . . . . . . . 31
16 Gas heat minimum supply air . . . . . . . . . . . . . . . . . . . . . . . . 31
17 Supply air limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
18 Altitude/temperature correction factors . . . . . . . . . . . . . . . . . 39
1 Unit shipping bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Condenser covering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Compressor section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 ZK component location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Unit 4 point load weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Unit 6 point load weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7 Center of gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8 ZK-06 through -10 physical dimensions . . . . . . . . . . . . . . . . 10
9 ZK-12 physical dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 10
10 ZK-06 through -12 unit bottom duct openings . . . . . . . . . . . 11
11 ZK-06 through -12 unit electrical entry . . . . . . . . . . . . . . . . . 12
12 ZK-06 through -10 unit side duct openings . . . . . . . . . . . . . . 12
13 ZK-12 unit side duct openings . . . . . . . . . . . . . . . . . . . . . . . 13
14 ZK-06 through -12 unit/end left duct opening . . . . . . . . . . . . 13
15 ZK-06 through -12 roof curb . . . . . . . . . . . . . . . . . . . . . . . . . 14
16 ZK-06 through -12 transition roof curb . . . . . . . . . . . . . . . . . 14
17 Side panels with hole plugs . . . . . . . . . . . . . . . . . . . . . . . . . 15
18 Return downflow plenum with panel . . . . . . . . . . . . . . . . . . . 15
Table of contents
Free cooling operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Power exhaust. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Smart Equipment™ economizer board . . . . . . . . . . . . . . . . . . 35
Airflow performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Air balance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Checking air quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Cooling sequence of operation . . . . . . . . . . . . . . . . . . . . . . . . 50
Cooling operation errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Reheat mode sequence of operation . . . . . . . . . . . . . . . . . . . 52
Electric heating sequence of operations . . . . . . . . . . . . . . . . . 53
Electric heat operation errors . . . . . . . . . . . . . . . . . . . . . . . . 54
Gas heating sequence of operations. . . . . . . . . . . . . . . . . . . . 54
Gas heating operation errors . . . . . . . . . . . . . . . . . . . . . . . . 55
Cooling start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Gas heat start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Checking gas heat input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Charging the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Smart Equipment™ unit control board . . . . . . . . . . . . . . . . . . . . . 60
Start-up sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
List of tables
19 Airflow performance - side duct application . . . . . . . . . . . . . 42
20 Airflow performance - bottom duct application . . . . . . . . . . . 44
21 RPM selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
22 Indoor blower specifications . . . . . . . . . . . . . . . . . . . . . . . . . 46
23 Power exhaust specifications . . . . . . . . . . . . . . . . . . . . . . . . 46
24 Motor sheave datum diameters . . . . . . . . . . . . . . . . . . . . . . 48
25 Additional static resistance . . . . . . . . . . . . . . . . . . . . . . . . . . 49
27 Electric heat limit setting 50 in. cabinet . . . . . . . . . . . . . . . . . 54
28 Electric heat limit setting 42 in. cabinet . . . . . . . . . . . . . . . . . 54
29 Electric heat anticipator setpoints . . . . . . . . . . . . . . . . . . . . . 54
30 Gas heat limit control settings . . . . . . . . . . . . . . . . . . . . . . . . 56
31 Gas heat anticipator setpoints . . . . . . . . . . . . . . . . . . . . . . . 56
32 Gas rate cubic feet per hour . . . . . . . . . . . . . . . . . . . . . . . . . 58
33 Gas heat stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
35 Ignition control flash codes . . . . . . . . . . . . . . . . . . . . . . . . . . 66
List of figures
19 Discharge panel in place . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
20 Save side panels for economizer hood tops . . . . . . . . . . . . 16
21 Condensate drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
electric heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
24 Typical low voltage field wiring . . . . . . . . . . . . . . . . . . . . . . . 19
25 Side entry gas piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
26 Bottom entry gas piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
27 SE-ECO1001-0 economizer controller . . . . . . . . . . . . . . . . . 35
28 Belt adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
29 Altitude/temperature correction factors . . . . . . . . . . . . . . . . 40
30 Dry coil delta P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
33 Typical flame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
34 Typical gas valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
35 Unit control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
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Related Manuals for Johnson Controls York ZK Series
Summary of Contents for Johnson Controls York ZK Series
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Page 1: Table Of Contents
R-410A ZK SERIES W/SMART EQUIPMENT™ 6-1/2 - 12-1/2 Ton 60 Hertz Table of contents General ..........2 Free cooling operation. -
Page 2: General
Be sure to follow all other applicable safety precautions and codes including ANSI Z223.1 or CSA- B149.1- latest edition. Wear safety glasses and work gloves. Use quenching cloth and have a fire extinguisher available during brazing operations. Johnson Controls Ducted Systems... - Page 3 • Gas Heat Propane Conversion Kit • Gas Heat High Altitude Kit (Natural Gas) • Gas Heat High Altitude Kit (Propane) • –60F Gas Heat Kit • Electric Heater Accessory 50 in. cabinet • Electric Heater Accessory 42 in. cabinet Johnson Controls Ducted Systems...
- Page 4 5 = 575-3-60 4 = PCO (Powered Conv. Outlet) 5 = DSC,NCO 6 = DSC,PCO Outdoor Air Option A = No Economizer B = Economizer w/Barometric RLF D = Economizer w/Power EXH H = Motorized Damper Johnson Controls Ducted Systems...
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Page 5: Installation
Turn each bracket toward the ground. The protective for 230v and 415v power supply respectively. Change plywood covering drops to the ground. the tap on the transformer for 208-3-60 or 380-3-50 Remove the condenser coil protective covering. operation. See the unit wiring diagram. Johnson Controls Ducted Systems... -
Page 6: Limitations
874-SERV for guidance. Additional accessories may be After the installation is complete, you must adjust gas fired units needed for stable operation at temperatures below 30°F. to obtain a temperature rise within the range specified on the unit rating plate. Johnson Controls Ducted Systems... -
Page 7: Unit Components
20-gauge aluminized steel tubular heat exchanger for long life Second model nameplate inside hinged access panel (stainless steel option) 1. Roof curbs for transitioning from Ducted Systems ZD Series footprint to the ZK Series footprints are also available (field-installed accessory). Johnson Controls Ducted Systems... -
Page 8: Location
The spreader bars must have a length that exceeds • Suitable for mounting on roof curb. the largest dimension across the unit. • For ground level installation, use a level concrete slab with a minimum thickness of 4 inches. The length and Johnson Controls Ducted Systems... -
Page 9: Weights And Dimensions
Table 3: Weights and dimensions Weight (lbs.) Center of gravity 4 point load location (lbs.) 6 point load location (lbs.) Size Model (tons) Shipping Operating (6.5) (7.5) 1205 1200 25.5 (8.5) 1205 1200 25.5 (10) 1470 1465 25.5 (12.5) Johnson Controls Ducted Systems... -
Page 10: Through -12 Unit Accessory Weights
29.03 29.03 14.85 Ø 24.58 TYP. 4 PL. 15.23 See detail A for gas inlet 11 3/8 See detail B for drain location 21 3/16 LEFT 4 3/16 FRONT 27 5/16 Figure 9: ZK-12 physical dimensions Johnson Controls Ducted Systems... -
Page 11: Through -12 Unit Physical Dimensions
27 1/2 LEFT RIGHT 20 1/8 19 1/8 17 1/8 12 5/16 Bottom condensate drain 14 1/2 25 9/16 Bottom gas supply entry 16 3/8 18 1/16 FRONT Figure 10: ZK-06 through -12 unit bottom duct openings Johnson Controls Ducted Systems... -
Page 12: Through -12 Unit Electrical Entry
D o t P l u g s Return Supply Air 2 - 3 1 /3 2 5 - 5 /3 2 3 1 - 1 1 /1 6 Figure 12: ZK-06 through -10 unit side duct openings Johnson Controls Ducted Systems... -
Page 13: Side Duct Dimensions
Figure 14: ZK-06 through -12 unit/end left duct opening Table 8: Left/end duct dimensions Dimension (in.) Unit model number ZK-06 30.357 13.365 22.516 ZK-07 30.357 13.365 22.516 ZK-08 30.358 22.580 22.330 ZK-10 30.358 22.580 22.330 ZK-12 30.358 22.580 22.330 Johnson Controls Ducted Systems... -
Page 14: Roof Curb Components
Figure 16: ZK-06 through -12 transition roof curb Roof curb components Item Description Return air Supply air Right side of the unit Front side of the unit 2 typ. Insulated deck under the condenser section Insulated deck under the compressor section Johnson Controls Ducted Systems... -
Page 15: Ductwork
NOT insert the screws through the casing. You must economizer or motorized damper may be installed. You must insulate and water-proof outdoor ductwork. keep these panels to use them as tops for the economizer rain hoods (see Figure 20). Johnson Controls Ducted Systems... -
Page 16: Condensate Drain
R-410A refrigerant and cannot be Always install filters ahead of evaporator coil. Keep the filters interchanged. clean and replace them with filters of the same size and type. Dirty filters reduce the capacity of the unit and result in frosted Johnson Controls Ducted Systems... -
Page 17: Power And Control Wiring
Power wiring is brought into the unit through the side of the unit or the basepan inside the curb. Johnson Controls Ducted Systems... -
Page 18: Typical Field Wiring Disconnect - Cooling Unit With Or Without Electric Heat
Figure 22: Typical field wiring disconnect - cooling unit with or without electric heat CONTACTOR 1M FACTORY OR FIELD GROUND SUPPLIED DISCONNECT THREE PHASE POWER SUPPLY Figure 23: Typical field wiring disconnect - cooling unit with gas heat Johnson Controls Ducted Systems... -
Page 19: Control Wire Sizes
Figure 24: Typical low voltage field wiring 208/230-3-60 and 380/415-3-50 units control transformers are factory wired for 230v and 415v power supply respectively. Change the tap on the transformer for 208-3-60 or 380-3-50 operation. See the unit wiring diagram. Johnson Controls Ducted Systems... -
Page 20: Electrical Data
20.1 22.3 10.8 20.1 22.3 55.0 18.0 21.7 31.3 34.1 24.0 28.9 40.3 43.1 34.0 40.9 55.4 58.1 None 17.2 19.0 17.2 19.0 41.0 18.0 17.3 24.7 26.9 24.0 23.1 31.9 34.1 34.0 32.7 43.9 46.1 Johnson Controls Ducted Systems... - Page 21 None 23.6 25.4 18.0 17.3 26.2 28.4 54.0 12.0 24.0 23.1 33.4 35.6 34.0 32.7 45.4 47.6 54.0 52.0 56.5 58.7 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Ducted Systems...
- Page 22 21.4 23.6 10.8 21.4 23.6 55.0 18.0 21.7 32.9 35.7 24.0 28.9 42.0 44.7 34.0 40.9 57.0 59.7 None 18.4 20.2 18.4 20.2 41.0 18.0 17.3 26.2 28.4 24.0 23.1 33.4 35.6 34.0 32.7 45.4 47.6 Johnson Controls Ducted Systems...
- Page 23 None 25.2 27.0 18.0 17.3 28.2 30.4 54.0 12.0 24.0 23.1 35.4 37.6 34.0 32.7 47.4 49.6 54.0 52.0 58.5 60.7 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Ducted Systems...
- Page 24 25.1 27.3 10.8 25.1 27.3 55.0 18.0 21.7 37.6 40.3 24.0 28.9 46.6 49.3 34.0 40.9 61.6 64.4 None 21.2 23.0 21.2 23.0 41.0 18.0 17.3 29.7 31.9 24.0 23.1 36.9 39.1 34.0 32.7 48.9 51.1 Johnson Controls Ducted Systems...
- Page 25 None 27.6 29.4 18.0 17.3 31.2 33.4 54.0 12.0 24.0 23.1 38.4 40.6 34.0 32.7 50.4 52.6 54.0 52.0 61.5 63.7 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Ducted Systems...
- Page 26 26.4 28.6 10.8 26.4 28.6 55.0 18.0 21.7 39.2 41.9 24.0 28.9 48.2 51.0 34.0 40.9 63.2 66.0 None 22.4 24.2 22.4 24.2 41.0 18.0 17.3 31.2 33.4 24.0 23.1 38.4 40.6 34.0 32.7 50.4 52.6 Johnson Controls Ducted Systems...
- Page 27 None 29.2 31.0 18.0 17.3 33.2 35.4 54.0 12.0 24.0 23.1 40.4 42.6 34.0 32.7 52.4 54.6 54.0 52.0 63.5 65.7 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Ducted Systems...
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Page 28: Through -12 Physical Data
2-pass 2-pass Circuitry type Split-face Split-face Split-face Microchannel Microchannel Evaporator coil data Face area (sq. ft) 10.6 10.6 13.2 13.2 13.2 Rows Fins per inch Tube diameter Circuitry type Split-face Split-face Split-face Split-face Split-face Refrigerant control Johnson Controls Ducted Systems... - Page 29 4. First stage 60% of second stage 5. ZK-07, ZK-08, ZK-10, ZK-12, have crankcase heaters standard. 6. 2 in. throwaway, standard, MERV (Minimum Efficiency Reporting Value) 3. 7. 2 in. pleated, optional, MERV 8. 8. 4 in. pleated, optional, MERV 13. Johnson Controls Ducted Systems...
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Page 30: Optional Electric Heat
Follow the “National Fuel Gas Code” Z223.1 (in U.S.A.) or the current Gas Installation Codes CSA-B149.1 (in Canada) in all Figure 25: Side entry gas piping Johnson Controls Ducted Systems... -
Page 31: Gas Pipe Sizing - Capacity Of Pipe
• Use wrought iron or steel pipe for all gas lines. Apply pipe are purged of air. dope sparingly to male threads only. • The gas supply must be a separate line and installed in accordance with all safety codes as prescribed under Limitations. Johnson Controls Ducted Systems... -
Page 32: Options And Accessories
• The proper pressure regulation. Two-stage regulation is assembly. Field-installed motorized outdoor damper recommended. accessories include complete instructions for installation. Johnson Controls Ducted Systems... -
Page 33: Economizer Sequences
Four types of free cooling options are available: dry bulb output energizes. The economizer dampers continue to changeover, single enthalpy, dual enthalpy changeover, and modulate to control the supply air temperature to the Auto. Economizer setpoint. Johnson Controls Ducted Systems... -
Page 34: Power Exhaust
If the demand for cooling from the space/return is satisfied, the economizer output will modulate to minimum position and the compressor outputs will be de-energized as long as their minimum run timers have expired. Johnson Controls Ducted Systems... -
Page 35: Smart Equipment™ Economizer Board
24 VAC hot supplied for the supply air humidity 24V~ Connects through circuit trace to 24V~ IN pin HOT sensor 0-10 VDC positive input from the Supply Air SAH parameter reports input status (0-100%H). Unused in Humidity sensor current control revision. Johnson Controls Ducted Systems... - Page 36 USB flash drive) Lit/flickering indicates UCB-to-economizer board SA bus Green UCB SA bus communication SA BUS SA BUS communication is currently active, off indicates the economizer transmission indicator board is awaiting SA bus communication Johnson Controls Ducted Systems...
- Page 37 ECON 2-10 VDC output for the Economizer actuator demand ventilation, cooling economizer loading and purge functions 24 VAC common/0-10 VDC negative for Connects through circuit trace to 24V~ IN pin COM economizer actuator Johnson Controls Ducted Systems...
- Page 38 - part no. 2AQ04700524 there is no call for free cooling, the actuator is proportionately • Optional CO sensor kit - part no. 2AQ04700624 modulated from the 0 to 10 VDC signal, with 0 VDC Johnson Controls Ducted Systems...
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Page 39: Supply Air Limitations
Table 17 and Figure 29. Re-tighten the belt nuts. Table 17: Altitude/temperature correction factors Altitude (Ft.) Air temp. 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 Johnson Controls Ducted Systems... -
Page 40: Altitude/Temperature Correction Factors
Example 2: A system, located at 5,000 feet of elevation, is to This value must be corrected for elevation. deliver 6,000 CFM at a static pressure of 1.5 in. Use the unit BHP at 5,000 ft. = 3.2 x .832 = 2.66 Johnson Controls Ducted Systems... - Page 41 4 turns 3 turns 2 turns 1 turn Fully Model Max BHP (tons) sheave sheave open open open open open open closed 1.73 1VM50 AK74 1035 1079 1126 2.30 1VM50 AK64 1039 1094 1150 1207 1256 1308 Johnson Controls Ducted Systems...
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Page 42: Airflow Performance
1. Blower performance includes gas heat exchangers and 2 in. filters. See the static resistance table for additional applications. 2. See the RPM selection table to determine the required motor sheave setting and to determine the maximum continuous BHP. 3. kW = BHP x 0.932. Johnson Controls Ducted Systems... - Page 43 1. Blower performance includes gas heat exchangers and 2 in. filters. See the static resistance table for additional applications. 2. See the RPM selection table to determine the required motor sheave setting and to determine the maximum continuous BHP. 3. kW = BHP x 0.932. Johnson Controls Ducted Systems...
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Page 44: Airflow Performance - Bottom Duct Application
1. Blower performance includes gas heat exchangers and 2 in. filters. See the static resistance table for additional applications. 2. See the RPM selection table to determine the required motor sheave setting and to determine the maximum continuous BHP. 3. kW = BHP x 0.932. Johnson Controls Ducted Systems... -
Page 45: Rpm Selection
2.30 1VM50 AK89 (8.5) 3.45 1VM50 AK74 1016 1067 1110 2.30 1VM50 AK84 (10) 3.45 1VM50 AK74 1016 1067 1110 3.45 1VM50 AK74 1016 1067 1110 (12.5) 5.75 1VP56 BK77 1052 1095 1136 1175 1216 1272 Johnson Controls Ducted Systems... -
Page 46: Air Balance
Drill two 5/16 inch holes, one in the return air duct as close does not affect the static pressure readings. to the inlet of the unit as possible, and another in the supply air duct as close to the outlet of the unit as possible. Johnson Controls Ducted Systems... -
Page 47: Dry Coil Delta P
0.55 ZK-07 ZK-08 ZK-10 0.45 ZK-12 0.35 0.25 0.15 0.05 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 Air Flow Rate (cfm) 100% Return Economizer No Economizer Figure 30: Dry coil delta P Johnson Controls Ducted Systems... -
Page 48: Motor Sheave Datum Diameters
= New Amps Table 23: Motor sheave datum diameters 1VM50x7/8 1VP56x1-1/8 (1-1/2, 2, and 3 HP motor) (5 HP motor) Turns open Datum diameter Turns open Datum diameter 1-1/2 1-1/2 2-1/2 2-1/2 3-1/2 3-1/2 4-1/2 4-1/2 5-1/2 Johnson Controls Ducted Systems... -
Page 49: Additional Static Resistance
3. 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. Johnson Controls Ducted Systems... -
Page 50: Operation
R to Y2 is completed. The lowest enthalpy value, to provide maximum operating control board energizes the first available compressor. If free efficiency. cooling is being used for the first stage of cooling, compressor Johnson Controls Ducted Systems... -
Page 51: Cooling Operation Errors
UCB monitors the condenser motor failure, (opens at 625 ± 25 psig). low-pressure limit switch for any openings. If the low-pressure switch opens for greater than 5 seconds, the UCB de-energizes Johnson Controls Ducted Systems... -
Page 52: Reheat Mode Sequence Of Operation
Coil Check Valve Check Valve Reheat Coil Airflow Refrigerant Flow Open Solenoid Valve Reheat Valve (SOL 1) (SOL 3) Compressor Accumulator Closed Solenoid Valve (SOL 2) Figure 31: Cooling operation piping schematic - circuit #1 shown Johnson Controls Ducted Systems... -
Page 53: Electric Heating Sequence Of Operations
All safety devices function as previously described. Electric heating sequence of operations The following sequence describes the operation of the electric heat section. Johnson Controls Ducted Systems... -
Page 54: Electric Heat Operation Errors
10 seconds. The ICB then checks for the presence of flame. If flame is detected, the ICB enters a flame stabilization period. If flame is not detected, the GV closes and a retry operation begins. Johnson Controls Ducted Systems... -
Page 55: Gas Heating Operation Errors
This control is located inside the supply air compartment and is set to open at the temperature indicated in Table 29. It resets manually. The limit switch operates when a high temperature Johnson Controls Ducted Systems... -
Page 56: Cooling Start-Up
The second stage of the thermostat energizes the second The ICB initiates a flash code associated with errors within the stage compressor if needed. system, Table 34 on page 66. Post-start checklist Verify proper system pressures for both circuits. Johnson Controls Ducted Systems... -
Page 57: Gas Heat Start-Up
Even when the thermostat is calling for first stage heat, the unit lights on second stage and runs on second stage for 1 Check for the correct manifold gas pressures. See Checking minute. gas heat input on page 57. Johnson Controls Ducted Systems... -
Page 58: Gas Rate Cubic Feet Per Hour
To determine rotations per minute, divide 60 by 19 = 3.16. temperature rise must lie within the range shown on the CSA To calculate rotations per hour, multiply 3.16 60 = 189.6. rating plate and the data in Table 11. Johnson Controls Ducted Systems... -
Page 59: Charging The Unit
Equipment™ control, refer to the Smart Equipment™ Item Description Item Description Controls Sequence of Operation Overview LIT- Heat exchanger tube Burner bracket 12011950. Burner flame (blue only) Gas supply pipe Igniter Burner Figure 33: Typical flame Johnson Controls Ducted Systems... -
Page 60: Smart Equipment™ Unit Control Board
24 VAC hot out for smoke detector, condensate overflow and/ accessories for unit shutdown are wired between thermostat or user shutdown relay switching in series connection strip SD-24 and R 24 VAC common for thermostat power Johnson Controls Ducted Systems... - Page 61 #1 refrigerant circuit Evaporator Coil temperature Input required for operation; 3.625 VDC reading EC1+ to EC1– with open EC1+ sensor input from 10KΩ @ 77°F, Type III negative circuit. Used in suction line temperature safety. temperature coefficient thermistor Johnson Controls Ducted Systems...
- Page 62 Output relay circuitry is isolated from other UCB components 24 VAC hot for H1, H2, CN-FAN, AUX HGR, 24V FOR OUTPUTS and the 24 VAC hot source may be from a second FAN C1 and C2 output relay contact switching transformer in the unit Johnson Controls Ducted Systems...
- Page 63 Three HPS2 trips in a two hour period cause a “High Pressure (left pin) Pressure Switch Switch 1 Lockout” and C2 output is then prevented until alarm reset. Connects through circuit trace to the right LPS2 pin. Johnson Controls Ducted Systems...
- Page 64 On-board, 2-line x 8-character back-lit display economizer, 4-stage and FDD board parameters ENTER Button for display menu acknowledgment and navigation Button for display menu navigation and zeroing of active CANCEL compressor ASCD timer 4-way Joystick for display menu navigation Johnson Controls Ducted Systems...
- Page 65 Green FC bus communication transmission FC BUS currently active, off indicates the UCB is awaiting incoming FC bus indicator communication Green communication board Isolated Power Lit indicates the UCB is supplying power to the communication sub- ISO PWR indicator board Johnson Controls Ducted Systems...
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Page 66: Cable For Fc Buses And Sa Buses In Order Of Preference
Energized With W1 Off Second Stage Gas Valve Gas Valve Energized With First Stage Gas Valve Off Gas Flow Gas Pressure Ignition Lockout Gas Valve Flame Sensor Steady off No Power Or Control Failure 24VAC or Control Johnson Controls Ducted Systems... -
Page 67: Start-Up Sheet
5167532-BIM-I-1118 Start-up sheet Johnson Controls Ducted Systems... - Page 68 5167532-BIM-I-1118 Johnson Controls Ducted Systems...
- Page 69 5167532-BIM-I-1118 Johnson Controls Ducted Systems...
- Page 70 5167532-BIM-I-1118 Johnson Controls Ducted Systems...
- Page 71 5167532-BIM-I-1118 Johnson Controls Ducted Systems...
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Page 72: 5167532-Bim-I-1018
Subject to change without notice. Printed in U.S.A. 5167532-BIM-I-1018 Copyright © 2018 by Johnson Controls, Inc. All rights reserved. Supersedes: 5167532-BIM-H-0518 York International Corporation 5005 York Drive Norman, OK 73069...
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