Table of Contents
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R-410A
SERIES 20 J**ZF
15 - 25 Ton
60 Hertz
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Rigging And Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Compressors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Power And Control Wiring. . . . . . . . . . . . . . . . . . . . . . . . . 14
Optional Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Optional Gas Heat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Options/Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Economizer Interface Overview . . . . . . . . . . . . . . . . . . . . 30
Set Point Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Optional Variable Air Volume (VAV) . . . . . . . . . . . . . . . . . 32
Optional Hot Gas Bypass (HGBP) . . . . . . . . . . . . . . . . . . 35
Air Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
1 J15 thru 25 ZF Unit Limitations . . . . . . . . . . . . . . . . . . . . . 6
2 Weights and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 J15 thru 25 ZF Unit Accessory Weights . . . . . . . . . . . . . . 9
4 Utilities Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Supply Fan VFD Weights, In Lbs. . . . . . . . . . . . . . . . . . . . 9
6 J15 thru 25 ZF Unit Clearances . . . . . . . . . . . . . . . . . . . 11
7 Control Wire Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
9 J15 thru 25 ZF Physical Data . . . . . . . . . . . . . . . . . . . . . 26
10 Electric Heat Minimum Supply Air . . . . . . . . . . . . . . . . . . 27
11 Gas Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
12 Gas Pipe Sizing - Capacity of Pipe . . . . . . . . . . . . . . . . . 28
13 Gas Heat Minimum Supply Air . . . . . . . . . . . . . . . . . . . . 28
1 J15 thru 25 ZF Component Location . . . . . . . . . . . . . . . . 6
2 Unit 4 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Unit 6 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Center of Gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 J15 thru 25 ZF Unit Dimensions Front View . . . . . . . . . . 9
6 J15 thru 25 ZF Unit Dimensions Rear View . . . . . . . . . . 10
7 J15 thru 25 ZF Unit Dimensions Rain Hood . . . . . . . . . 11
8 J15ZF Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
9 J18 thru 25 ZF Roof Curb . . . . . . . . . . . . . . . . . . . . . . . 12
10 Fixed Outdoor Air Damper . . . . . . . . . . . . . . . . . . . . . . . 13
11 Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
12 Field Wiring Disconnect - Cooling Unit With/Without Electric
Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
13 Typical Field Wiring 24 Volt Thermostat . . . . . . . . . . . . 16
14 External Supply Connection External Shut-Off . . . . . . . 28
15 Bottom Supply Connection External Shut-Off . . . . . . . . 28
16 Vent and Combustion Air Hood . . . . . . . . . . . . . . . . . . . 30
TABLE OF CONTENTS
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Cooling Sequence Of Operation . . . . . . . . . . . . . . . . . . . . 47
No Outdoor Air Options . . . . . . . . . . . . . . . . . . . . . . . . . 48
Cooling Operation Errors . . . . . . . . . . . . . . . . . . . . . . . . 49
Electric Heating Sequence Of Operations . . . . . . . . . . . . 50
Electric Heat Operation Errors . . . . . . . . . . . . . . . . . . . . 51
Gas Heating Sequence Of Operations . . . . . . . . . . . . . . . 51
Gas Heating Operation Errors . . . . . . . . . . . . . . . . . . . . 52
Start-Up (Cooling) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Start-Up (Gas Heat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Checking Gas Heat Input . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Charging The Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Unit Control Board Option Setup . . . . . . . . . . . . . . . . . . . . . . 65
Option Byte Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Heat Delay Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Optional VAV Control Board Flash Codes . . . . . . . . . . . . 65
Start-Up Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
LIST OF TABLES
15 Altitude/Temperature Correction Factors . . . . . . . . . . . . 37
16 Air Flow Performance - Side Duct Application . . . . . . . . 39
17 Air Flow Performance - Bottom Duct Application . . . . . . 42
18 RPM Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
19 Indoor Blower Specifications . . . . . . . . . . . . . . . . . . . . . . 45
20 Power Exhaust Specifications . . . . . . . . . . . . . . . . . . . . 45
21 Limit Control Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
22 Electric Heat Anticipator Setpoint . . . . . . . . . . . . . . . . . . 51
23 Gas Heat Limit Control Setting . . . . . . . . . . . . . . . . . . . . 53
24 Gas Heat Anticipator Setpoints . . . . . . . . . . . . . . . . . . . . 54
25 Gas Rate Cubic Feet Per Hour . . . . . . . . . . . . . . . . . . . . 55
26 Unit Control Board Flash Codes . . . . . . . . . . . . . . . . . . . 64
27 Heat Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
28 VAV Control Board Flash Codes . . . . . . . . . . . . . . . . . . 65
LIST OF FIGURES
17 Economizer LCD and Keypad Layout. . . . . . . . . . . . . . . 31
18 Single Enthalpy Curve And Boundaries . . . . . . . . . . . . . 31
19 Belt Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
20 Altitude/Temperature Correction Factors . . . . . . . . . . . . 37
For All Unit Tonnages . . . . . . . . . . . . . . . . . . . . . . . . . . 46
22 Occupied Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
23 Gas Valve Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
24 Gas Valve and Controls . . . . . . . . . . . . . . . . . . . . . . . . . 53
25 Proper Pilot Flame Adjustment . . . . . . . . . . . . . . . . . . . 56
26 Typical Flame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
27 Typical Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
28 J15ZF (15 Ton) Charging Chart . . . . . . . . . . . . . . . . . . . 57
29 J18ZF (17.5 Ton) Charging Chart . . . . . . . . . . . . . . . . . 57
30 J20ZF (20 Ton) Charging Chart . . . . . . . . . . . . . . . . . . . 57
31 J25ZF (25 Ton) Charging Chart . . . . . . . . . . . . . . . . . . . 57
32 Unit Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
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Table of Contents
Related Manuals for Johnson Controls J ZF Series
Summary of Contents for Johnson Controls J ZF Series
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Page 1: Table Of Contents
R-410A SERIES 20 J**ZF 15 - 25 Ton 60 Hertz TABLE OF CONTENTS General ......... . 2 Operation . -
Page 2: General
853634-JIM-F-0514 General Johnson Controls Series 20 J**ZF models are either single package air conditioners equipped with optional factory installed This product must be installed in strict compliance with electric heaters, or single package gas-fired central heating the installation instructions and any applicable local, furnaces with cooling unit. - Page 3 Be sure to follow all other applicable For authorized replacement parts call Johnson Controls, Inc. safety precautions and codes including ANSI Z223.1 or CSA- National Source 1 Parts outlet at 1-866-523-9670.
- Page 4 M = Options 1, 2, 3, & 4 Z = Options 3, 4 & 5 Options 1 = Disconnect 4 = Smoke Detector R.A. 2 = Non-Pwr'd Conv. Outlet 5 = Pwr'd Conv. Outlet 3 = Smoke Detector S.A. Johnson Controls Unitary Products...
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Page 5: Installation
30°F. 208/230-3-60 and 380/415-3-50 units with factory installed Powered Convenience Outlet Option are wired for 230v and 415v power supply respectively. Change tap on transformer for 208-3-60 or 380-3-50 operation. See unit wiring diagram. Johnson Controls Unitary Products... -
Page 6: J15 Thru 25 Zf Unit Limitations
Table 1: J15 thru 25 ZF Unit Limitations Unit Limitations Size Unit Voltage Applied Voltage Outdoor DB Temp (Tons) Max (°F) 208/230-3-60 460-3-60 (15) 575-3-60 208/230-3-60 460-3-60 (17.5) 575-3-60 208/230-3-60 460-3-60 (20) 575-3-60 208/230-3-60 460-3-60 (25) 575-3-60 Johnson Controls Unitary Products... -
Page 7: Location
7.3, or 7.4 of Gas Installation Codes, CSA-B149.1 (in Canada) - Latest Edition, and/or applicable provisions of the local building The condenser coils should be protected from rigging cable damage with plywood or other suitable material. Johnson Controls Unitary Products... -
Page 8: Weights And Dimensions
Figure 4: Center of Gravity Table 2: Weights and Dimensions Weight Size Center of Gravity 4 Point Load Location (lbs.) 6 Point Load Location (lbs.) Model (lbs.) (Tons) Shipping 1875 65.26 (15) 2011 70.98 (17.5) 2538 (20) 2602 44.5 (25) Johnson Controls Unitary Products... -
Page 9: J15 Thru 25 Zf Unit Accessory Weights
1. One-inch Gas Piping NPT Required. 10.0 hp 2. Opening in the bottom to the unit can be located by the slice in the insulation. 15.0 hp Note: All entry holes should be sealed to prevent rain water entry into building. Johnson Controls Unitary Products... -
Page 10: J15 Thru 25 Zf Unit Dimensions Rear View
Remove and discard the bottom duct covers. Duct openings are closed with sheet metal covers except when the unit includes a power exhaust option. The covering consists of a heavy black paper composition. Replace the side supply and return air compartment panels. Johnson Controls Unitary Products... -
Page 11: J15 Thru 25 Zf Unit Clearances
• Three (3) feet above any force air inlet located within 10 horizontal feet (excluding those integral to the unit). • Four (4) feet below, four horizontal feet from, or one foot above any door or gravity air inlet into the building. • Four (4) feet from electric and gas meters, regulators and relief equipment. Johnson Controls Unitary Products... -
Page 12: Ductwork
NOT be sized to match the dimensions of the duct This damper is shipped inside the return air compartment. It is connections on the unit. completely assembled and ready for installation. A damper baffle inside of the hood is adjustable to provide variable Johnson Controls Unitary Products... -
Page 13: Condensate Drain
Side Return Air Screen POE (polyolester) compressor lubricants are known to cause Access Panel Outdoor Air long term damage to some synthetic roofing materials. Opening Cover * Gasketed Rear View Flange Figure 10: Fixed Outdoor Air Damper Johnson Controls Unitary Products... -
Page 14: Filters
208/230-3-60 and 380/415-3-50 units control transformers are factory wired for 230v and 415v power supply respectively. Change tap on transformer for 208- 3-60 or 380-3-50 operation. See unit wiring diagram. Johnson Controls Unitary Products... -
Page 15: Control Wire Sizes
Refer to Table 7: Control Wire Sizes Table 7 for control wire sizing and maximum length. Wire Size Maximum Length 18 AWG 150 Feet 1. From the unit to the thermostat and back to the unit. Johnson Controls Unitary Products... -
Page 16: Typical Field Wiring 24 Volt Thermostat
Figure 13: Typical Field Wiring 24 Volt Thermostat 208/230-3-60 and 380/415-3-50 units control transformers are factory wired for 230v and 415v power supply respectively. Change tap on transformer for 208- 3-60 or 380-3-50 operation. See unit wiring diagram. Johnson Controls Unitary Products... -
Page 17: Electrical Data
191.2 (20) None 51.9 18.0 21.7 51.9 460-3-60 17.9 17.9 36.0 43.3 63.1 54.0 65.0 74.0 72.0 86.6 95.6 None 38.1 18.0 17.3 38.1 575-3-60 12.8 12.8 36.0 34.6 50.7 54.0 52.0 59.3 72.0 69.3 76.7 Johnson Controls Unitary Products... - Page 18 81.2 72.0 86.6 102.9 54.1 18.0 17.3 54.1 575-3-60 18.6 17.1 10.3 36.0 34.6 56.2 54.0 52.0 64.8 72.0 69.3 82.2 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Unitary Products...
- Page 19 203.7 (20) None 56.9 18.0 21.7 56.9 460-3-60 17.9 17.9 36.0 43.3 69.4 54.0 65.0 80.2 72.0 86.6 101.9 None 42.1 18.0 17.3 42.1 575-3-60 12.8 12.8 36.0 34.6 55.7 54.0 52.0 64.3 72.0 69.3 81.7 Johnson Controls Unitary Products...
- Page 20 87.5 72.0 86.6 109.1 58.1 18.0 17.3 58.1 575-3-60 18.6 17.1 10.3 36.0 34.6 61.2 54.0 52.0 69.8 72.0 69.3 87.2 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Unitary Products...
- Page 21 (20) None 54.7 18.0 21.7 54.7 460-3-60 17.9 17.9 10.0 36.0 43.3 66.6 54.0 65.0 77.5 72.0 86.6 99.1 None 40.4 18.0 17.3 40.4 575-3-60 12.8 12.8 36.0 34.6 53.6 54.0 52.0 62.2 72.0 69.3 79.5 Johnson Controls Unitary Products...
- Page 22 89.1 72.0 86.6 110.7 59.2 18.0 17.3 59.2 575-3-60 18.6 17.1 15.4 36.0 34.6 62.6 54.0 52.0 71.2 72.0 69.3 88.5 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Unitary Products...
- Page 23 (20) None 59.7 18.0 21.7 59.7 460-3-60 17.9 17.9 10.0 36.0 43.3 72.9 54.0 65.0 83.7 72.0 86.6 105.4 None 44.4 18.0 17.3 44.4 575-3-60 12.8 12.8 36.0 34.6 58.6 54.0 52.0 67.2 72.0 69.3 84.5 Johnson Controls Unitary Products...
- Page 24 95.3 72.0 86.6 117.0 63.2 18.0 17.3 63.2 575-3-60 18.6 17.1 15.4 36.0 34.6 67.6 54.0 52.0 76.2 72.0 69.3 93.5 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Unitary Products...
- Page 25 65.0 83.7 72.0 86.6 105.4 56.0 18.0 17.3 56.0 575-3-60 18.6 17.1 36.0 34.6 58.6 54.0 52.0 67.2 72.0 69.3 84.5 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Unitary Products...
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Page 26: J15 Thru 25 Zf Physical Data
13.5 Tube diameter (in.) Circuitry Type Split-face Split-face Split-face Split-face EVAPORATOR COIL DATA Face area (Sq. Ft.) 15.5 Rows Fins per inch 13.5 13.5 13.5 13.5 Tube diameter Circuitry Type Intertwined Split-face Intertwined Split-face Refrigerant control Johnson Controls Unitary Products... -
Page 27: Optional Electric Heat
6000 6000 208/230-3-60 6000 6000 6000 6000 J20ZF 460-3-60 6000 6000 6000 6000 (20) 600-3-60 6000 6000 6000 6000 208/230-3-60 7500 7500 7500 7500 J25ZF 460-3-60 7500 7500 7500 7500 (25) 600-3-60 7500 7500 7500 7500 Johnson Controls Unitary Products... -
Page 28: Optional Gas Heat
8750 6000 8750 J20ZF 6000 9400 6000 9400 (20) 6000 9400 6000 9400 Main 7500 12500 7500 12500 J25ZF Manual (25) 7500 12500 7500 12500 Shut-off Valve Drip Leg Figure 14: External Supply Connection External Shut-Off Johnson Controls Unitary Products... -
Page 29: Fire Or Explosion Hazard
Gaskolac or Stalastic, and compounds such as Rectorseal #5, Clyde’s, or John Crane may be used. Check all connections for leaks when piping is completed using a soap solution. NEVER USE A FLAME. Johnson Controls Unitary Products... -
Page 30: Options/Accessories
Slotted Openings in Access Panel Vent Air Outlet Hoods 2 LINE Combustion Air Intake Hood Gas Heat Access Panels Figure 16: Vent and Combustion Air Hood SELECT (ENTER) MENU UP SCROLL BUTTONS (EXIT) (UP/DOWN) BUTTON BUTTONS Johnson Controls Unitary Products... -
Page 31: Economizer Lcd And Keypad Layout
1. When values are displayed, pressing and holding the and button causes the display to automatically increment. ECONOMIZING DUAL ENTHALPY HIGH LIMIT AVAILABLE NOT AVAILABLE SINGLE ENTHALPY P2 (T,RH) P1 (T,RH) TEMPERATURE Figure 18: Single Enthalpy Curve And Boundaries Johnson Controls Unitary Products... -
Page 32: Optional Bas-Ready Economizer Power Exhaust Damper Set Point Adjustment
2 to 10 Vdc signal, with 2 proportional 0-5 VDC electrical output. Johnson Controls Unitary Products... - Page 33 PDA and a down-loaded copy of the Simplicity® • RH - a 0-10 VDC analog input provided by a field-installed software available at the UPGnet Commercial Product return air relative humidity sensor for dual enthalpy Catalog website. economizer configuration (used with OH). Johnson Controls Unitary Products...
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Page 34: Bas-Ready Vfd
• LR '4' to UCB 'C' 'VFD-Ready' For Customer-installation customer-installed drive. The physical dimensions of VFDs can vary greatly among manufacturers, horsepower ratings and Units configured as 'VFD-ready' provide provisions for a voltage requirements. Keep in mind that drive manufacturers Johnson Controls Unitary Products... -
Page 35: Optional Hot Gas Bypass (Hgbp)
0 and 80 psig with a factory-setting of 60 psig. HGBP installed. is standard on all units with VAV and optional with CV units. Do not connect AC power to the T1, T2, T3 drive terminals to prevent damage to the VFD. Johnson Controls Unitary Products... -
Page 36: Belt Adjustment
Air density correction factors are shown in Table 15 and Figure 20. *Never Loosen (C)* Figure 19: Belt Adjustment Johnson Controls Unitary Products... -
Page 37: Altitude/Temperature Correction Factors
This value must be corrected for elevation. Example 2: A system, located at 5,000 feet of elevation, is to deliver 6,000 CFM at a static pressure of 1.5". Use the unit BHP at 5,000 ft. = 3.2 x .832 = 2.66 Johnson Controls Unitary Products... - Page 38 Size Motor Blower 6 Turns 5 Turns 4 Turns 3 Turns 2 Turns 1 Turn Fully Model (Tons) Sheave Sheave Open Open Open Open Open Open Closed 5.75 1VP60 BK110 8.63 1VP60 BK090 1035 1075 1120 Johnson Controls Unitary Products...
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Page 39: Air Flow Performance - Side Duct Application
1. Blower performance includes gas heat exchangers and 2” filters. See STATIC RESISTANCE table for additional applications. 2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP. 3. kW = BHP x 0.838. Johnson Controls Unitary Products... - Page 40 1. Blower performance includes gas heat exchangers and 2” filters. See STATIC RESISTANCE table for additional applications. 2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP. 3. kW = BHP x 0.838. Johnson Controls Unitary Products...
- Page 41 1. Blower performance includes gas heat exchangers and 2” filters. See STATIC RESISTANCE table for additional applications. 2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP. 3. kW = BHP x 0.82. Johnson Controls Unitary Products...
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Page 42: Air Flow Performance - Bottom Duct Application
1. Blower performance includes gas heat exchangers and 2” filters. See STATIC RESISTANCE table for additional applications. 2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP. 3. kW = BHP x 0.838. Johnson Controls Unitary Products... - Page 43 1. Blower performance includes gas heat exchangers and 2” filters. See STATIC RESISTANCE table for additional applications. 2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP. 3. kW = BHP x 0.838. Johnson Controls Unitary Products...
- Page 44 1. Blower performance includes gas heat exchangers and 2” filters. See STATIC RESISTANCE table for additional applications. 2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP. 3. kW = BHP x 0.82. Johnson Controls Unitary Products...
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Page 45: Air Balance
To assure a dry coil, the compressors should someone other than the equipment installer. be deactivated while the test is being run. Johnson Controls Unitary Products... -
Page 46: Pressure Drop Across A Dry Indoor Coil Vs. Supply Air Cfm For All Unit Tonnages
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 Unitary Products... -
Page 47: Operation
'Occupied' Mode. Additionally, the Computer running Windows software with a standard USB unit can be switched between Unoccupied/Occupied mode port. through network communications with Simplicity™ PC and other BAS control systems. Simplicity® PC Software (http://www.yorkupg.com/ software.asp) Johnson Controls Unitary Products... -
Page 48: No Outdoor Air Options
If the outdoor air enthalpy is above the set Temperature sensor and will allow free-cooling when the point, “Y1” energizes compressor #1. outdoor temperature is less than both the First-Stage SAT Control setpoint plus 5 °F, and the Economizer OAT Enable setpoint. Johnson Controls Unitary Products... -
Page 49: Cooling Operation Errors
During cooling operation, if a freezestat opens, the UCB will de- gravity closes the dampers when the exhaust fan is off. energize the associated compressor, initiate the ASCD, and, if the other compressor is idle, stop the condenser fans. If the call Johnson Controls Unitary Products... -
Page 50: Electric Heating Sequence Of Operations
(internal) protection. If there is an abnormal b The thermostat will cycle the electric heat to satisfy the temperature rise in a compressor, the protector will open to shut heating requirements of the conditioned space. Johnson Controls Unitary Products... -
Page 51: Electric Heat Operation Errors
3, 4, 5, 6 0.29 0.29 ° ° Opens, Opens, 0.29 0.29 0.29 575-3-60 0.29 0.29 0.29 0.29 Gas Heating Sequence Of Operations 17.5, 20 and 25 The following sequence describes the operation of the gas heat section. Johnson Controls Unitary Products... -
Page 52: Gas Heating Operation Errors
GV, the UCB will de-energize the indoor blower maximum of 85 seconds to ignite the pilot tube. If the pilot flame following the elapse of the fan off delay for heating. is not detected, then “IC2” will lock out first stage furnace Johnson Controls Unitary Products... -
Page 53: Gas Heat Limit Control Setting
Refer to Table 24 for the required gas heat and is set to open at 190°F. It is a manual reset switch. If AUX anticipator setting. trips, then the primary limit has not functioned correctly. Replace the primary limit. Johnson Controls Unitary Products... -
Page 54: Start-Up (Cooling)
Turn “OFF” all electric power to unit. same as listed on the unit nameplate. Open gas heat access panel. Make sure that the vent and combustion hoods have been Turn gas valve clockwise to “OFF” position (See Figure 27). properly installed. Johnson Controls Unitary Products... -
Page 55: Checking Gas Heat Input
CSA rating plate and the data in Table 11. After the temperature rise has been determined, the CFM can be calculated as follows: Johnson Controls Unitary Products... -
Page 56: Proper Pilot Flame Adjustment
Figure 27: Typical Gas Valve To check or change burners, pilot or orifices, CLOSE MAIN MANUAL SHUT-OFF VALVE AND SHUT OFF ALL ELECTRIC POWER TO THE UNIT. Remove the screws holding either end of the manifold to the burner supports. Johnson Controls Unitary Products... -
Page 57: Charging The Unit
Figure 29: J18ZF (17.5 Ton) Charging Chart Figure 31: J25ZF (25 Ton) Charging Chart Johnson Controls Unitary Products... -
Page 58: Troubleshooting
M3 is pulled in, and the blower motor does not operate, UCB terminal, C1. If 24 volts is present, check for loose check all power & control wiring connections to and from wiring between C1 and the compressor contactor. Johnson Controls Unitary Products... - Page 59 If 24 volts is not present at the C2 terminal, check for 24 the Mate-N-Lock plug to the Y1 “ECON” terminal. If nothing volts from the room thermostat at the UCB Y2 terminal. If is found, the economizer control may have faulted and is Johnson Controls Unitary Products...
- Page 60 #1 is unavailable for cooling calls. Check may be improperly wired. Check for 24 volts at the Y1 “OUT” the UCB for alarms indicating that compressor #1 is locked terminal of the UCB. If 24 volts is present, trace the wiring Johnson Controls Unitary Products...
- Page 61 'RESET' on the drive's keypad and take any corrective short delay (the room thermostat fan switch is in “AUTO” action as needed. If the motor still does not operate, position). replace the motor. Johnson Controls Unitary Products...
- Page 62 “PILOT CHECKOUT” page 56. for proper furnace operation. If lock-out continues to occur, Check the supply pressure as described in “POST START locate the source of the problem and correct. CHECK LIST” page 54. Make adjustments as necessary. Johnson Controls Unitary Products...
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Page 63: Pilot Checkout
ASCDs for one cycle, press and release the UCB TEST/ RESET button once. Adjust air shutters as described in “BURNER AIR SHUTTER ADJUSTMENT” page 56. Flash codes that do and do not represent alarms are listed in Table 26. Johnson Controls Unitary Products... -
Page 64: Unit Control Board Flash Codes
EEPROM Storage Failure No Power or Control Failure 1. Non-alarm condition. Check Alarm History Reset All ASCDs For One Cycle Non Alarm Condition Green LED Flashing Current Alarm Flashed Red LED Figure 32: Unit Control Board Johnson Controls Unitary Products... -
Page 65: Unit Control Board Option Setup
12 Flashes Limit 2 Switch Open currently displayed mode (Option Byte or Heat 13 Flashes Purge Delay). 14 Flashes VFD Input Failure 15 Flashes Dirty Filter Switch No Power or Control Failure Johnson Controls Unitary Products... -
Page 66: Start-Up & Service Data Instruction
30 days from installation. Refer to current standard EQUIPMENT STARTUP warranty policy and warranty manual found on UPGnet for details. In the event that communication with Johnson Controls/UPG is Simplicity PC is required to complete the start-up. Simplicity required regarding technical and/or warranty concerns, all parties PC software can be downloaded from www.york.com. -
Page 67: Safety Warnings
1034349-UCL-A-0313 SAFETY WARNINGS The inspections and recording of data outlined in this procedure are required for start-up of Johnson Controls/UPG's packaged Lethal voltages are present during some start-up products. Industry recognized safety standards and practices checks. Extreme caution must be used at all times. - Page 68 See Notes sensor installed Check economizer setting A Prove economizer open/close through PC or Control Module Reheat Mode Normal or Alternate Not Applicable Humidistat Location _____________________________________________ Note: BAS System Control Reheat through Intellicomfort/VAV Board Unitary Products Group Johnson Controls Unitary Products...
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Page 69: Electrical Data
1. VAV units with heat section - simulate heat call to drive VAV boxes and VFD/IGV to maximum design airflow position. 2. VAV units without heat section - VAV boxes must be set to maximum design airflow position. Unitary Products Group Johnson Controls Unitary Products... - Page 70 Manifold Pressure Stage 2 (If Equipped) Stage 3 (If Equipped) Supply gas pressure at full fire Check temperature rise measured at full fire °F 1. Input X Eff. (BTU output) 1.08 X Temp. Rise Unitary Products Group Johnson Controls Unitary Products...
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Page 71: Final Inspection
________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ Subject to change without notice. Printed in U.S.A. 853634-JIM-F-0514 Copyright © 2014 by Johnson Controls, Inc. All rights reserved. Supersedes: 853634-JIM-E-0514 York International Corporation 5005 York Drive Norman, OK 73069...
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