Table of Contents
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R-410A
ZH SERIES
6-1/2 - 12-1/2 Ton
60 Hertz
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Preceding Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Rigging And Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Compressors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Power And Control Wiring. . . . . . . . . . . . . . . . . . . . . . . . . 17
Optional Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Optional Gas Heat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Options/Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Optional Variable Air Volume (VAV) . . . . . . . . . . . . . . . . . 34
Optional Hot Gas Bypass (HGBP) . . . . . . . . . . . . . . . . . . 36
Economizer Interface Overview . . . . . . . . . . . . . . . . . . . . 36
Airflow Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Air Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
1 ZH078-150 Unit Limitations . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Weights and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 ZH078-150 Unit Accessory Weights . . . . . . . . . . . . . . . . . 9
4 ZH078-150 Unit Physical Dimensions . . . . . . . . . . . . . . 10
5 ZH078-150 Unit Clearances . . . . . . . . . . . . . . . . . . . . . . 11
6 Side Duct Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7 Control Wire Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
9 ZH078-150 Physical Data . . . . . . . . . . . . . . . . . . . . . . . . 28
10 Electric Heat Minimum Supply Air . . . . . . . . . . . . . . . . . . 30
11 Gas Pipe Sizing - Capacity of Pipe . . . . . . . . . . . . . . . . . 31
12 Gas Heat Minimum Supply Air . . . . . . . . . . . . . . . . . . . . 32
14 Supply Air Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
15 Altitude/Temperature Correction Factors . . . . . . . . . . . . 41
16 Airflow Performance - Side Duct Application . . . . . . . . . 43
17 Airflow Performance - Bottom Duct Application . . . . . . . 45
1 Unit Shipping Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Condenser Covering . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Compressor Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
®
Component Location (ZH120 Shown) . . . . . . . 6
5 Unit 4 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . 8
6 Unit 6 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . 8
7 Center of Gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
8 ZH078-120 Physical Dimensions . . . . . . . . . . . . . . . . . . . 9
9 ZH150 Physical Dimensions . . . . . . . . . . . . . . . . . . . . . 10
10 ZH078-150 Unit Bottom Duct Openings . . . . . . . . . . . . 12
11 ZH078-150 Unit Electrical Entry . . . . . . . . . . . . . . . . . . . 13
12 ZH078-120 Unit Side Duct Openings . . . . . . . . . . . . . . . 13
13 ZH150 Unit Side Duct Openings . . . . . . . . . . . . . . . . . . 14
14 ZH078-150 Unit Left Duct Opening . . . . . . . . . . . . . . . . 14
15 ZH078-150 Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . 15
16 ZH078-150 Transition Roof Curb . . . . . . . . . . . . . . . . . . 15
17 Side Panels With Hole Plugs . . . . . . . . . . . . . . . . . . . . . 16
18 Return Downflow Plenum With Panel . . . . . . . . . . . . . . 16
19 Discharge Panel In Place . . . . . . . . . . . . . . . . . . . . . . . . 16
TABLE OF CONTENTS
Checking Air Quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Cooling Sequence Of Operation . . . . . . . . . . . . . . . . . . . . 50
No Outdoor Air Options . . . . . . . . . . . . . . . . . . . . . . . . . 51
Cooling Operation Errors . . . . . . . . . . . . . . . . . . . . . . . . 53
Electric Heating Sequence Of Operations . . . . . . . . . . . . 54
Electric Heat Operation Errors . . . . . . . . . . . . . . . . . . . . 54
Gas Heating Sequence Of Operations . . . . . . . . . . . . . . . 55
Ignition Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Gas Heating Operation Errors . . . . . . . . . . . . . . . . . . . . 56
Start-Up (Cooling) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Start-Up (Gas Heat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Checking Gas Heat Input . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Charging The Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Unit Control Board Option Setup . . . . . . . . . . . . . . . . . . . . . . 62
Option Byte Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Heat Delay Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Start-Up Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
LIST OF TABLES
18 RPM Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
19 Indoor Blower Specifications . . . . . . . . . . . . . . . . . . . . . . 47
20 Power Exhaust Specifications . . . . . . . . . . . . . . . . . . . . 47
21 Motor Sheave Datum Diameters . . . . . . . . . . . . . . . . . . 49
22 Additional Static Resistance . . . . . . . . . . . . . . . . . . . . . . 50
23 Electric Heat Limit Setting 50" Cabi net . . . . . . . . . . . . . . 55
24 Electric Heat Limit Setting 42" Cabi net . . . . . . . . . . . . . . 55
25 Electric Heat Anticipator Setpoints . . . . . . . . . . . . . . . . . 55
26 Gas Heat Limit Control Settings . . . . . . . . . . . . . . . . . . . 57
27 Gas Heat Anticipator Setpoints . . . . . . . . . . . . . . . . . . . . 57
28 Gas Rate Cubic Feet Per Hour . . . . . . . . . . . . . . . . . . . . 59
29 Gas Heat Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
30 Unit Control Board Flash Codes . . . . . . . . . . . . . . . . . . . 61
31 Heat Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
32 Ignition Control Flash Codes . . . . . . . . . . . . . . . . . . . . . . 63
33 VAV Control Board Flash Codes . . . . . . . . . . . . . . . . . . 63
LIST OF FIGURES
20 Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Heat and All Units With VFD Option . . . . . . . . . . . . . . . 18
Without VFD Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
23 Typical Electronic Thermostat Field Wiring . . . . . . . . . . 19
24 Typical Field Wiring 24 Volt Thermostat . . . . . . . . . . . . 19
25 Side Entry Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . 31
26 Bottom Entry Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . 31
27 Simplified VFD Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 36
28 Economizer LCD and Keypad Layout. . . . . . . . . . . . . . . 37
29 Single Enthalpy Curve And Boundaries . . . . . . . . . . . . . 38
30 Belt Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
31 Altitude/Temperature Correction Factors . . . . . . . . . . . . 41
32 Dry Coil Delta P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
33 Occupied Jumper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
34 Typical Flame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
35 Typical Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
36 Unit Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
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Summary of Contents for Johnson Controls ZH078
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Page 1: Table Of Contents
31 Altitude/Temperature Correction Factors ... . 41 15 ZH078-150 Roof Curb ......15 32 Dry Coil Delta P . -
Page 2: General
Observe all precautions in the literature, labels, and tags accompanying the equipment whenever working on air conditioning equipment. Be sure to follow all other applicable safety precautions and codes including ANSI Z223.1 or CSA- B149.1- latest edition. Johnson Controls Unitary Products... - Page 3 Additional information is available in the following reference forms: • Technical Guide - ZH078-150, 528150 • General Installation - ZH078-150, 1084789 Improper installation may create a condition where the • Pre-start & Post-start Check List operation of the product could cause personal injury or •...
- Page 4 Y = Options 4 & 5 Z = Options 3, 4 & 5 Options 1 = Disconnect 2 = Non-Pwr'd Conv. Outlet 3 = Smoke Detector S.A. 4 = Smoke Detector R.A. 5 = Pwr'd Conv. Outlet Johnson Controls Unitary Products...
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Page 5: Installation
In U.S.A.: plywood covering will drop to the ground. National Electrical Code, ANSI/NFPA No. 70 - Latest Remove the condenser coil external protective covering Edition prior to operation. National Fuel Gas Code, ANSI Z223.1 - Latest Edition Johnson Controls Unitary Products... -
Page 6: Predator ® Component Location (Zh120 Shown)
Side entry power York Sunline™ footprint to Toolless (high-efficiency compressor and control wiring the ZH Series footprints door latch w/crankcase heater) knockouts are also available (field installed accessory) ® Figure 4: Predator Component Location (ZH120 Shown) Johnson Controls Unitary Products... -
Page 7: Location
1084789-YIM-B-0614 Table 1: ZH078-150 Unit Limitations Unit Limitations Size Model Unit Voltage Applied Voltage Outdoor DB Temp (Tons) Max (°F) 208/230-3-60 460-3-60 (6.5) 575-3-60 208/230-3-60 460-3-60 (7.5) 575-3-60 208/230-3-60 460-3-60 (8.5) 575-3-60 208/230-3-60 460-3-60 (10) 575-3-60 208/230-3-60 460-3-60 (12.5) 575-3-60... -
Page 8: Weights And Dimensions
Table 2: Weights and Dimensions Size Weight (lbs.) Center of Gravity 4 Point Load Location (lbs.) 6 Point Load Location (lbs.) Model (Tons) Shipping Operating (6.5) (7.5) 1052 1047 (8.5) 1095 1090 (10) 1285 1280 (12.5) Johnson Controls Unitary Products... -
Page 9: Zh078-150 Unit Accessory Weights
1084789-YIM-B-0614 Table 3: ZH078-150 Unit Accessory Weights Weight (lbs.) Unit Accessory Shipping Operating Economizer Power Exhaust Electric Heat Gas Heat Variable Frequency Drive 1. Weight given is for the maximum heater size available (54KW). 2. Weight given is for the maximum number of tube heat exchangers available (8 tube). -
Page 10: Zh078-150 Unit Physical Dimensions
11 3/8 See detail B for drain location 21 3/16 LEFT 4 3/16 FRONT 27 5/16 Figure 9: ZH150 Physical Dimensions Table 4: ZH078-150 Unit Physical Dimensions Dimension (in.) Unit Model Number ZH078 22 1/8 18 3/16 15 3/16 6 3/16... -
Page 11: Zh078-150 Unit Clearances
14.594 7.715 7.705 4.737 4.727 42” CABINET 50 3/4” CABINET Detail B 5-3/8 3/4” FPT Table 5: ZH078-150 Unit Clearances Direction Distance (in.) Direction Distance (in.) Right Front Left Rear Bottom 1. Units must be installed outdoors. Over hanging structure or shrubs should not obscure condenser air discharge outlet. -
Page 12: Zh078-150 Unit Bottom Duct Openings
Bottom condensate drain 14 1/2 25 9/16 Bottom gas supply entry 16 3/8 18 1/16 FRONT TOP VIEW Bottom power, control and convenience outlet wiring entry 3X Ø 0.875 Ø 2.469 Figure 10: ZH078-150 Unit Bottom Duct Openings Johnson Controls Unitary Products... -
Page 13: Zh078-150 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: ZH078-120 Unit Side Duct Openings Johnson Controls Unitary Products... -
Page 14: Side Duct Dimensions
ZH102 28 1/4 18 1/16 28 1/4 18 1/4 ZH120 28 1/4 18 1/16 28 1/4 18 1/4 ZH150 28 1/4 18 1/16 28 1/4 18 1/4 30-3/8 4-5/16 Figure 14: ZH078-150 Unit Left Duct Opening Johnson Controls Unitary Products... -
Page 15: Ductwork
59-1/4 FRONT RIGHT 64-1/4 Figure 16: ZH078-150 Transition Roof Curb supply and return air duct connections at the unit should be made with flexible joints to minimize noise. Ductwork The supply and return air duct systems should be designed for Ductwork should be designed and sized according to the the CFM and static pressure requirements of the job. -
Page 16: Condensate Drain
POE. This oil is extremely hygroscopic, meaning it absorbs water readily. POE oil can absorb 15 times as much water as other oils designed for HCFC and CFC refrigerants. Take all necessary precautions to avoid exposure of the oil to the atmosphere. Johnson Controls Unitary Products... -
Page 17: Filters
Refer to Electrical Data Table 8 to size power Code C221, and/or local ordinances. The unit must be wiring, fuses, and disconnect switch. electrically grounded in accordance with NEC and CEC as specified above and/or local codes. Johnson Controls Unitary Products... -
Page 18: Field Wiring Disconnect - Cooling Unit With/Without Electric Heat And All Units With Vfd Option
Figure 21: Field Wiring Disconnect - Cooling Unit With/Without Electric Heat and All Units With VFD Option CONTACTOR 1M FACTORY OR FIELD GROUND SUPPLIED DISCONNECT THREE PHASE POWER SUPPLY Figure 22: Field Wiring Disconnect - Cooling Unit With Gas Heat Without VFD Option Johnson Controls Unitary Products... -
Page 19: Control Wire Sizes
Terminals A1 and A2 provide a relay output to close the outdoor economizer dampers when the thermostat switches to the set-back position. Figure 23: Typical Electronic Thermostat Field Wiring T-STAT UNIT CONTROL BOARD Figure 24: Typical Field Wiring 24 Volt Thermostat Johnson Controls Unitary Products... -
Page 20: Electrical Data
1084789-YIM-B-0614 Table 8: Electrical Data ZH078-150 Standard Motor - Without Powered Convenience Outlet OD Fan Supply Compressors Motors Blower Conv Electric Heat Option Max Fuse Max Fuse (each) Size (each) Motor Motor Outlet w/Pwr Breaker Breaker Volt (Tons) (Amps) Size... - Page 21 1084789-YIM-B-0614 ZH078-150 Standard Motor - Without Powered Convenience Outlet (Continued) OD Fan Supply Compressors Motors Blower Conv Electric Heat Option Max Fuse Max Fuse (each) Size (each) Motor Motor Outlet w/Pwr Breaker Breaker Volt (Tons) (Amps) Size Size w/ (Amps)
- Page 22 1084789-YIM-B-0614 ZH078-150 Hi Static Motor - Without Powered Convenience Outlet OD Fan Supply Compressors Motors Blower Conv Electric Heat Option Max Fuse Max Fuse (each) Size (each) Motor Motor Outlet w/Pwr Breaker Breaker Volt (Tons) (Amps) Size Size w/ Pwr...
- Page 23 1084789-YIM-B-0614 ZH078-150 Hi Static Motor - Without Powered Convenience Outlet (Continued) OD Fan Supply Compressors Motors Blower Conv Electric Heat Option Max Fuse Max Fuse (each) Size (each) Motor Motor Outlet w/Pwr Breaker Breaker Volt (Tons) (Amps) Size Size w/ Pwr...
- Page 24 1084789-YIM-B-0614 ZH078-150 Standard Motor - With Powered Convenience Outlet OD Fan Supply Compressors Motors Blower Conv Electric Heat Option Max Fuse Max Fuse (each) Size (each) Motor Motor Outlet w/Pwr Breaker Breaker Volt (Tons) (Amps) Size Size w/ Pwr (Amps)
- Page 25 1084789-YIM-B-0614 ZH078-150 Standard Motor - With Powered Convenience Outlet (Continued) OD Fan Supply Compressors Motors Blower Conv Electric Heat Option Max Fuse Max Fuse (each) Size (each) Motor Motor Outlet w/Pwr Breaker Breaker Volt (Tons) (Amps) Size Size w/ Pwr...
- Page 26 1084789-YIM-B-0614 ZH078-150 Hi Static Motor - With Powered Convenience Outlet OD Fan Supply Compressors Motors Blower Conv Electric Heat Option Max Fuse Max Fuse (each) Size (each) Motor Motor Outlet w/Pwr Breaker Breaker Volt (Tons) (Amps) Size Size w/ Pwr...
- Page 27 1084789-YIM-B-0614 ZH078-150 Hi Static Motor - With Powered Convenience Outlet (Continued) OD Fan Supply Compressors Motors Blower Conv Electric Heat Option Max Fuse Max Fuse (each) Size (each) Motor Motor Outlet w/Pwr Breaker Breaker Volt (Tons) (Amps) Size Size w/ Pwr...
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Page 28: Zh078-150 Physical Data
1084789-YIM-B-0614 Table 9: ZH078-150 Physical Data Models Component ZH078 ZH090 ZH102 ZH120 ZH150 Nominal Tonnage 12.5 AHRI COOLING PERFORMANCE Gross Capacity @ AHRI A point (Btu) 81000 93000 107000 125000 156000 AHRI net capacity (Btu) 78000 90000 102000 120000 150000 11.7... - Page 29 1084789-YIM-B-0614 Table 9: ZH078-150 Physical Data (Continued) Models Component ZH078 ZH090 ZH102 ZH120 ZH150 Nominal Tonnage 12.5 CONDENSER FAN DATA Quantity of fans Fan diameter (Inch) Type Prop Prop Prop Prop Prop Drive type Direct Direct Direct Direct Direct Quantity of motors Motor HP each No.
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Page 30: Optional Electric Heat
2550 2550 2550 2550 208/230-3-60 3000 3000 3000 3500 460-3-60 3000 3000 3000 3000 (10) 600-3-60 3000 3000 3000 3500 208/230-3-60 3750 3750 3750 4000 460-3-60 3750 3750 3750 3750 (12.5) 600-3-60 3750 3750 3750 3750 Johnson Controls Unitary Products... -
Page 31: Optional Gas Heat
NOTE: There may be a local gas utility requirement specifying a minimum diameter for gas piping. All units require a 3/4 inch pipe connection at the entrance fitting. Line should not be sized smaller than the entrance fitting size. Johnson Controls Unitary Products... -
Page 32: Gas Heat Minimum Supply Air
Check all joints for leaks with soap solution or other All LP gas equipment must conform to the safety standards of material suitable for the purpose. NEVER USE A FLAME. the National Fire Protection Association. Johnson Controls Unitary Products... -
Page 33: Options/Accessories
These heaters mount in the heat compartment with option or a field installed accessory. If factory installed, refer to the heating elements extending into the supply air chamber. All the instructions included with the outdoor air hood to complete Johnson Controls Unitary Products... -
Page 34: Optional Variable Air Volume (Vav)
(field supplied) in the installed carbon dioxide sensor which monitors outdoor air supply duct located at a point where constant pressure is quality (CO concentration) and, along with IAQ, enables Johnson Controls Unitary Products... - Page 35 Capacitors within the drive must be allowed to discharge before beginning service. Johnson Controls Unitary Products...
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Page 36: Optional Hot Gas Bypass (Hgbp)
The opening pressure of the bypass valve is adjustable between 95 and 115 psig with a factory-setting of 105 psig. The power leads to the drive (L1, L2, L3) and from the motor (T1, T2, T3) have been temporarily spliced together with wire Johnson Controls Unitary Products... -
Page 37: Economizer Interface Overview
5 seconds. Using the Keypad with Settings and Parameters 1. When values are displayed, pressing and holding the and To use the keypad when working with Setpoints, System and button causes the display to automatically increment. Johnson Controls Unitary Products... -
Page 38: Single Enthalpy And Dual Enthalpy High Limit Curves
Advanced Setup menu item. When the unit has energized and HL when a compressor stage is energized. a call for Y1 In and in the free cooling mode and there is a call Johnson Controls Unitary Products... -
Page 39: Supply Air Limitations
Figure 30: Belt Adjustment Scroll compressors require proper rotation to operate correctly. Units are properly phased at the factory. Do not change the internal wiring to make the blower condenser fans, or compressor rotate correctly. Johnson Controls Unitary Products... - Page 40 Table 15 and Figure 31. tension at least two times during the first 24 hours of operation. Any retensioning should fall between the min. and max. deflection force values. 5. After adjusting retighten nuts (A). Johnson Controls Unitary Products...
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Page 41: Altitude/Temperature Correction Factors
Corrected BHP = 4.0 x 0.832 = 3.328 BHP at 5,000 ft. = 3.2 x .832 = 2.66 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 Johnson Controls Unitary Products... -
Page 42: Airflow Performance
5 Turns 4 Turns 3 Turns 2 Turns 1 Turn Fully Model (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 Unitary Products... -
Page 43: Airflow Performance - Side Duct Application
1084789-YIM-B-0614 Table 16: Airflow Performance - Side Duct Application ZH078 (6.5 Ton) Side Duct Available External Static Pressure - IWG Air Flow (CFM) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard 1.5 HP &... - Page 44 1. Blower performance includes gas heat exchangers and 2” filters. See STATIC RESI STANCE 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 0.932. Johnson Controls Unitary Products...
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Page 45: Airflow Performance - Bottom Duct Application
1084789-YIM-B-0614 Table 17: Airflow Performance - Bottom Duct Application ZH078 (6.5 Ton) Bottom Duct Available External Static Pressure - IWG Air Flow (CFM) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard 1.5 HP &... -
Page 46: Rpm Selection
2.30 1VM50 AK94 (8.5) 3.45 1VM50 AK74 1035 1084 1134 2.30 1VM50 AK84 (10) 3.45 1VM50 AK74 1035 1084 1134 3.45 1VM50 AK74 1035 1084 1134 (12.5) 5.75 1VP56 BK77 1052 1095 1136 1175 1216 1272 Johnson Controls Unitary Products... -
Page 47: Air Balance
Re-checking set screws replace the dot plugs. after 10-12 hrs. run time is recommended. Tighten blower pulley and motor sheave set screws after any adjustments. Re-check set screws after 10-12 hrs. run time is recommended. Johnson Controls Unitary Products... -
Page 48: Dry Coil Delta P
Determine the number of turns the variable motor sheave is open. ZH078 0.45 ZH102 ZH090 ZH120 ZH150 0.35 0.25 0.15 0.05 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 Airflow (CFM) Figure 32: Dry Coil Delta P Johnson Controls Unitary Products... -
Page 49: Motor Sheave Datum Diameters
CFM. Adjustments of the blower speed and belt tension are REQUIRED. Verify proper sheave alignment; tighten blower pulley and motor sheave set screws after these adjustments. Re-checking set screws after 10-12 hrs. run time is recommended. Johnson Controls Unitary Products... -
Page 50: Operation
If operating, the cooling and, if so, which components to energize. system is halted as with a completion of a call for cooling. Heating always takes priority. Johnson Controls Unitary Products... -
Page 51: No Outdoor Air Options
Once placed into the Occupied Mode, the speed of the indoor energized. In free-cooling mode, if the call for the second stage blower motor is controlled by duct static pressure. The Duct Static set point (default = 1.5") is the pressure that the VFD Johnson Controls Unitary Products... - Page 52 Once the call for cooling has been satisfied, it will de-energize efficiency. any compressors and condenser fans, after the minimum compressor run times have been satisfied. Otherwise, the unit Johnson Controls Unitary Products...
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Page 53: Cooling Operation Errors
If the call for compressor is inactive, the condenser fans will be de- cooling is still present at the end of the ASCD and the freezestat energized. has closed, the unit will resume operation. Johnson Controls Unitary Products... -
Page 54: Electric Heating Sequence Of Operations
Electric Heating Sequence Of Operations heater and energizing the blower. The following sequence describes the operation of the electric heat section. Johnson Controls Unitary Products... -
Page 55: Gas Heating Sequence Of Operations
“R” to “W1” is completed. A call for heat passes through the UCB to the Ignition Control Board (ICB). The UCB monitors the “W1” call and acts upon any call ZH078, 090 (6.5, 7.5) 208/230 for heat by monitoring the Gas Valve (GV). Once voltage has... -
Page 56: Gas Heating Operation Errors
“W1”). heater and energizing the blower. The auxiliary limit switch is wired in series with the limit switch. As such, the UCB cannot distinguish the auxiliary limit and the Johnson Controls Unitary Products... -
Page 57: Start-Up (Cooling)
Verify proper system pressures for both circuits. Measure the temperature drop across the evaporator coil. Remove the call for heating by lowering the thermostat setting lower than the conditioned space temperature. This resets any flash codes. Johnson Controls Unitary Products... -
Page 58: Start-Up (Gas Heat)
10.5 in. or Steps 1-6. the operating pressure drop below 4.5 in for natural gas units. If gas pressure is outside these limits, contact the local gas utility or propane supplier for corrective action. Johnson Controls Unitary Products... -
Page 59: Gas Rate Cubic Feet Per Hour
. The result of 2nd Stage Input 1st Stage Input 199,000 Btuh is within 5% of the 192,000 Btuh rating of the # of Burner Tubes (100% Btuh) (60% Btuh) furnace. 120,000 72,000 180,000 108,000 240,000 144,000 Johnson Controls Unitary Products... -
Page 60: Charging The Unit
Label all wires prior to disconnection when servicing Figure 34: Typical Flame controls. Wiring errors can cause improper and dangerous operation which could cause injury to person and/or damage unit components. Verify proper operation after servicing. Johnson Controls Unitary Products... -
Page 61: Unit Control Board Flash Codes
Flashing Cooling 12 Flashes Unit Locked Out due to Fan Overload Switch Failure 13 Flashes Compressor Held Off due to Low Voltage Flashing 14 Flashes EEPROM Storage Failure No Power or Control Failure 1. Non-alarm condition. Johnson Controls Unitary Products... -
Page 62: Unit Control Board Option Setup
Option Setup mode. When saving, the exiting the Option Setup mode. When saving, the control board only saves the parameters for the control board only saves the parameters for the currently displayed mode (Option Byte or Heat Delay). Johnson Controls Unitary Products... -
Page 63: Heat Delay
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 No Power Or Control STEADY OFF 24VAC or Control Failure Johnson Controls Unitary Products... - Page 64 If not, press and release 10. If the thermostat and UCB are properly wired, replace the the ALARMS button on the UCB. The UCB will flash the UCB. last five alarms on the LED. If the compressor is locked Johnson Controls Unitary Products...
- Page 65 ALARMS button on the UCB. The UCB will flash the last the Y1 terminal. DO NOT jump the Y1 to C1 terminals. If five alarms on the LED. If the compressor is locked out, the compressor engages, the UCB has faulted. Johnson Controls Unitary Products...
- Page 66 UCB terminal, C1. If 24 volts is present, check for loose the 24 volts to the Y1 “ECON” terminal even though the wiring between C1 and the compressor contactor. Johnson Controls Unitary Products...
- Page 67 Cancel any thermostat Replace the spark ignitor if damaged. calls and set the fan switch to “AUTO”, wait for the internal overload to reset. Test again when cool. Johnson Controls Unitary Products...
- Page 68 The removal procedure is described in but the burner does not ignite and a gas odor is not detected at “BURNER/ORIFICE INSPECTION/SERVICING”. Clean or the draft motor outlet. replace burner orifices and burners as needed. Johnson Controls Unitary Products...
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Page 69: Start-Up Sheet
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 70 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 71 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 72 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 73 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 74: 1084789-Yim-B-0614
________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ Subject to change without notice. Printed in U.S.A. 1084789-YIM-B-0614 Copyright © 2014 by Johnson Controls, Inc. All rights reserved. Supersedes: 1084789-YIM-A-1213 York International Corporation 5005 York Drive Norman, OK 73069...
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