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Johnson Controls Unitary Products ZS Series Installation Manual

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R-410A
ZS SERIES W/SIMPLICITY SE
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 Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Dry Bulb Changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Single Enthalpy Changeover. . . . . . . . . . . . . . . . . . . . . . . 30
Dual Enthalpy Changeover . . . . . . . . . . . . . . . . . . . . . . . . 31
Auto. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Free Cooling Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Power Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Setpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
1 ZS-15 thru -25 Unit Limitations . . . . . . . . . . . . . . . . . . . . . 6
2 Weights and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 ZS-15 thru -25 Unit Accessory Weights . . . . . . . . . . . . . . 9
4 Utilities Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 Supply Fan VFD Weights, In Lbs. . . . . . . . . . . . . . . . . . . . 9
6 ZS-15 thru -25 Unit Clearances . . . . . . . . . . . . . . . . . . . 11
7 Control Wire Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
8 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
9 ZS-15 thru -25 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 ZS-15 thru -25 Component Location . . . . . . . . . . . . . . . . 6
2 Unit 4 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Unit 6 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Center of Gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
8 ZS-15 Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
9 ZS-18 thru -25 Roof Curb . . . . . . . . . . . . . . . . . . . . . . . 12
10 Fixed Outdoor Air Damper . . . . . . . . . . . . . . . . . . . . . . . 13
11 Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

TABLE OF CONTENTS

Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Set Point Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Optional Variable Air Volume (VAV) . . . . . . . . . . . . . . . . . 35
Optional Hot Gas Bypass (HGBP) . . . . . . . . . . . . . . . . . . 37
Air Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Compressor Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Cooling Operation Errors . . . . . . . . . . . . . . . . . . . . . . . . 49
Electric Heating Sequence Of Operations . . . . . . . . . . . . 50
Electric Heat Operation Errors . . . . . . . . . . . . . . . . . . . . 51
Gas Heating Sequence Of Operations . . . . . . . . . . . . . . . 52
Gas Heating Operation Errors . . . . . . . . . . . . . . . . . . . . 53
Start-Up (Cooling) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Start-Up (Gas Heat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Checking Gas Heat Input . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Charging The Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Start-Up Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
LIST OF TABLES
18 RPM Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
19 Indoor Blower Specifications . . . . . . . . . . . . . . . . . . . . . . 47
20 Power Exhaust Specifications . . . . . . . . . . . . . . . . . . . . 47
21 Limit Control Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
22 Electric Heat Anticipator Setpoint . . . . . . . . . . . . . . . . . . 52
23 Gas Heat Limit Control Setting . . . . . . . . . . . . . . . . . . . . 53
24 Gas Heat Anticipator Setpoints . . . . . . . . . . . . . . . . . . . . 54
25 Gas Rate Cubic Feet Per Hour . . . . . . . . . . . . . . . . . . . . 55
26 Simplicity SE UCB Details . . . . . . . . . . . . . . . . . . . . . . . 60
LIST OF FIGURES
16 Vent and Combustion Air Hood . . . . . . . . . . . . . . . . . . . 30
17 SE-ECO1001-0 Economizer Controller . . . . . . . . . . . . . 32
18 Belt Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
19 Altitude/Temperature Correction Factors . . . . . . . . . . . . 39
For All Unit Tonnages . . . . . . . . . . . . . . . . . . . . . . . . . . 48
21 Gas Valve Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
22 Gas Valve and Controls . . . . . . . . . . . . . . . . . . . . . . . . . 53
23 Proper Pilot Flame Adjustment . . . . . . . . . . . . . . . . . . . 56
24 Typical Flame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
25 Typical Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
26 ZS-15 (15 Ton) Charging Chart . . . . . . . . . . . . . . . . . . . 57
27 ZS-18 (17.5 Ton) Charging Chart . . . . . . . . . . . . . . . . . 57
28 ZS-20 (20 Ton) Charging Chart . . . . . . . . . . . . . . . . . . . 57
29 ZS-25 (25 Ton) Charging Chart . . . . . . . . . . . . . . . . . . . 57
30 Unit Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

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Summary of Contents for Johnson Controls Unitary Products ZS Series

  • Page 1: Table Of Contents

    R-410A ZS SERIES W/SIMPLICITY SE 15 - 25 Ton 60 Hertz TABLE OF CONTENTS General ......... . 2 Outputs .

  • Page 2: General

    This product must be installed in strict compliance with safety precautions and codes including ANSI Z223.1 or CSA- the installation instructions and any applicable local, B149.1- latest edition. state and national codes including, but not limited to building, electrical, and mechanical codes. Johnson Controls Unitary Products...
  • Page 3 This system uses R-410A Refrigerant which operates at higher pressures than R-22. No other refrigerant may be • General Installation - ZS-15 thru -25, 1088918 used in this system. • SSE Control Quick Start Guide - 1136326 Johnson Controls Unitary Products...
  • 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...

  • 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: Thru -25 Unit Limitations

    Table 1: ZS-15 thru -25 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: Thru -25 Unit Accessory Weights

    1. One-inch Gas Piping NPT Required. 2. Opening in the bottom to the unit can be located by the slice in the 10.0 hp insulation. 15.0 hp Note: All entry holes should be sealed to prevent rain water entry into building. Johnson Controls Unitary Products...

  • Page 10: Thru -25 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: Thru -25 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 for control wire sizing and maximum length. Table 7: Control Wire Sizes 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...

  • Page 26: Thru -25 Physical Data

    Fins per inch 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 Tube diameter Circuitry Type Intertwined Split-face Intertwined Split-face Refrigerant control Johnson Controls Unitary Products...

  • Page 27: Optional Electric Heat

    6000 6000 6000 6000 208/230-3-60 6000 6000 6000 6000 460-3-60 6000 6000 6000 6000 (20) 600-3-60 6000 6000 6000 6000 208/230-3-60 7500 7500 7500 7500 460-3-60 7500 7500 7500 7500 (25) 600-3-60 7500 7500 7500 7500 Johnson Controls Unitary Products...

  • Page 28: Optional Gas Heat

    (17.5) 6000 8750 6000 8750 6000 9400 6000 9400 (20) 6000 9400 6000 9400 7500 12500 7500 12500 Main 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 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

    Figure 16: Vent and Combustion Air Hood Single Enthalpy Changeover For single enthalpy economizer operation, the outside air is suitable for free cooling if the outside air enthalpy is at least 1 BTU/lb below the Economizer Outside Air Enthalpy Setpoint Johnson Controls Unitary Products...

  • Page 31: Dual Enthalpy Changeover

    If the economizer output is at 100% and the SAT is greater than De-energizes exhaust fan when economizer output is below the the Economizer setpoint + 1°F, the control starts a 12-minute Economizer Damper Position for Exhaust Fan OFF timer to energize a compressor output. Johnson Controls Unitary Products...

  • Page 32: Simplicity Se Economizer Board Details

    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 Unitary Products...
  • Page 33 Non-Modulating, Modulating Damper or Variable EX-FAN fan contactor coil/VFD enable relay coil Frequency Fan. Used to turn on/enable the power exhaust fan motor. 24 VAC common/0-10 VDC negative for economizer Connects through circuit trace to 24V~ IN pin COM actuator Johnson Controls Unitary Products...
  • Page 34 0-10 VDC positive input from the air monitoring FR AIR outputs 10 VDC; Fr Air parameter reports input status (0- station sensor 50000CFM/23595lps). Used for economizer minimum position reset in speed-controlled indoor blower applications. Johnson Controls Unitary Products...

  • Page 35: Optional Bas-Ready Economizer Power Exhaust Damper

    AQ voltage input. reference signal to the VFD to control the output of the indoor • Optional CO Space Sensor Kit Part # 2AQ04700324 blower motor. • Optional CO Sensor Kit Part # 2AQ04700424 Johnson Controls Unitary Products...
  • Page 36 • DRIVE - routes power through the VFD for modulating for either AC-output or DC-output. See price pages for further control of the indoor blower motor. details. Johnson Controls Unitary Products...

  • Page 37: Optional Hot Gas Bypass (Hgbp)

    The opening pressure of the bypass valve is fully adjustable against moisture, dust and excessive heat. between 95 and 115 psig with a factory-setting of 105 psig. HGBP is standard on all units with VAV and optional with CV units. Johnson Controls Unitary Products...

  • Page 38: Belt Adjustment

    Air density correction factors are shown in Table 15 and Figure 19. *Never Loosen (C)* Figure 18: Belt Adjustment Johnson Controls Unitary Products...

  • Page 39: 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 40 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...

  • Page 41: 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 42 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 0.82. Johnson Controls Unitary Products...

  • Page 44: 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 45 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 46 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...

  • Page 47: 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 48: 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 49: Sequence Of Operation

    Occupied Mode to start operation. The default setting the UCB will de-energize the associated compressor, initiate for all VAV units is 'Unoccupied', therefore the installer must the ASCD (Anti-short cycle delay), and, if the other compressor Johnson Controls Unitary Products...

  • Page 50: Electric Heating Sequence Of Operations

    Electric Heating Sequence Of Operations Low ambient mode operates the compressors in this manner: 10 minutes on, 5 minutes off. The indoor blower is operated The following sequence describes the operation of the electric heat section. Johnson Controls Unitary Products...

  • Page 51: Electric Heat Operation Errors

    Refer to Table 22 for the required electric Safety Controls heat anticipator setting. The UCB monitors the temperature limit switch of electric heat units. Johnson Controls Unitary Products...

  • Page 52: Gas Heating Sequence Of Operations

    After completing the specified fan on delay for heating, the UCB ceased. The GV is immediately de-energized. The blower is de- will energize the blower motor. energized after the fan off delay for heating has elapsed. The draft motor performs a 25-second post purge. Johnson Controls Unitary Products...

  • Page 53: Gas Heating Operation Errors

    Remove the call for heating by lowering the thermostat setting The flame rods and controls are located per Proper Flame lower than the conditioned space temperature. Adjustment Figure 23. If an ignition control fails to detect a Johnson Controls Unitary Products...

  • Page 54: Start-Up (Cooling)

    Measure the system amperage draw across all legs of 3 no time should the standby gas pressure exceed 13 in. or phase power wires. the operating pressure drop below 5.0 in for natural gas Measure the condenser fan amperage draw. Johnson Controls Unitary Products...

  • Page 55: Checking Gas Heat Input

    Seconds for Size of Test Dial One Rev. 1/2 cu. ft. 1 cu. ft. To increase the gas pressure, turn the adjusting screw clockwise. NOTE: The correct manifold pressure for these furnaces is 3.65 IWG ± 0.3. Johnson Controls Unitary Products...

  • Page 56: Proper Pilot Flame Adjustment

    (3) be sure to replace cover screw after adjustment to prevent possible gas leakage. Put the system into operation and observe through complete cycle to be sure all controls function properly. Figure 25: Typical Gas Valve Johnson Controls Unitary Products...

  • Page 57: Charging The Unit

    Figure 27: ZS-18 (17.5 Ton) Charging Chart Figure 29: ZS-25 (25 Ton) Charging Chart Johnson Controls Unitary Products...

  • Page 58: Simplicity™ Se (Smart Equipment) Firmware Version

    OprOAT 70.5 F 70.5 F 70.5 F ENTER ENTER ENTER CANCEL CANCEL CANCEL JOY + JOY + JOY + C PWR C PWR C PWR Press the “Cancel” button to exit each menu level. Repeatedly pressing Johnson Controls Unitary Products...
  • Page 59 ENTER ““ENTER”” button to save the value. CANCEL JOY + C PWR These few pages provide a simple demonstration how to navigate the menu’s of the Simplicity SE control containing Johnson Controls Unitary Products...

  • Page 60: Simplicity Se Ucb Details

    Connects through circuit trace to the thermostat connection 24 VAC hot for switched inputs to the UCB strip R terminal, right FAN OVR pin, right HPS1 pin, right HPS2 pin, lower DFS pin and lower APS pin Johnson Controls Unitary Products...
  • Page 61 Supply Air Temperature sensor input from 10KΩ with open circuit. Used in heat/cool staging cutouts, free cooling @ 77°F, Type III negative temperature coefficient SAT+ operation, demand ventilation operation, comfort ventilation thermistor operation, economizer loading operation, VAV cooling operation, hydronic heat operation. Johnson Controls Unitary Products...
  • Page 62 2-10 VDC (0-100%) output for the indoor blower blower VFD based on fan-only, cooling stage and heating stage Variable outputs. For VAV units: this output provides control of the indoor Frequency Drive blower VFD based on supply duct static pressure input and setpoint. Johnson Controls Unitary Products...
  • Page 63 C1 output. Three LPS1 (left pin) Pressure Switch LPS1 trips in a one hour period cause a “Low Pressure Switch 1 Lockout” and C1 output is then prevented until alarm reset. Johnson Controls Unitary Products...
  • Page 64 On-board, 2-line x 8-character back-lit display economizer, 4-stage and FDD board parameters Button for display menu acknowledgment and ENTER navigation Button for display menu navigation and zeroing of CANCEL active compressor ASCD timer 4-way Joystick for display menu navigation Johnson Controls Unitary Products...
  • Page 65 Green FC bus communication transmission currently active, off indicates the UCB is awaiting incoming FC FC BUS indicator bus communication Green communication board Isolated Power Lit indicates the UCB is supplying power to the communication ISO PWR indicator sub-board Johnson Controls Unitary Products...

  • Page 66: Start-Up Sheet

    Technical Services Department available. Therefore, some variation in the startup procedure will 5005 York Drive exist depending upon the products capacity, control system, Norman, OK 73069 options and accessories installed. 1034349-UCL-B-0814 Johnson Controls Unitary Products...
  • Page 67 Return Static Pressure: _________________________________________________________________________ Design Building Static Pressure: __________________________________________________________________ ________________ Outside Air Dilution: Economizer Position Percentage: ____________________________________ CFM: Supply Gas Pressure After Regulator W/o Heat Active ___________________________ Inches_________________ ADDITIONAL APPLICATION NOTES FROM SPECIFYING ENGINEER: Unitary Products Group Johnson Controls Unitary Products...
  • 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...
  • Page 69 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...

  • Page 71: 1088918-Bim-B-1014

    OPERATIONAL MEASUREMENTS - STAGING CONTROLS Verify Proper Operation of Heating/Cooling Staging Controls Create a cooling demand at the Thermostat, BAS System or Simplicity PC Verify that cooling/economizer stages are energized. Create a heating demand at the Thermostat, BAS System or Simplicity PC Verify that heating stages are energized.

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