Table of Contents
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R-410A
ZT SERIES W/SMART EQUIPMENT™
6.5 - 12.5 Ton
60 Hertz
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Preceding installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Limitations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Rigging and handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Side panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Condensate drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Compressors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Power and control wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Optional electric heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Optional gas heat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Options and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Economizer sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Power exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Smart Equipment™ economizer board . . . . . . . . . . . . . . . . . . 44
Airflow performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
1 Component location table . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 ZT078-150 unit limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 ZT078-150 standard unit weights and dimensions . . . . . . . . 11
4 ZT078-150 unit weights with the Magna Dry option . . . . . . . 11
5 ZT078-150 unit accessory weights . . . . . . . . . . . . . . . . . . . . 11
6 ZT078-150 unit physical dimensions . . . . . . . . . . . . . . . . . . . 13
7 ZT078-150 unit clearances . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8 ZT078-102 side duct dimensions . . . . . . . . . . . . . . . . . . . . . 17
9 ZT120-150 side duct dimensions . . . . . . . . . . . . . . . . . . . . . 17
10 Left/end duct dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
11 Control wire sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
12 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
13 Physical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
14 Electric heat minimum supply air . . . . . . . . . . . . . . . . . . . . . . 35
15 Gas pipe sizing - capacity of pipe . . . . . . . . . . . . . . . . . . . . . 36
16 Gas heat minimum supply air . . . . . . . . . . . . . . . . . . . . . . . . 36
17 Supply air limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
18 Altitude/temperature correction factors . . . . . . . . . . . . . . . . . 49
19 Airflow performance - side duct application . . . . . . . . . . . . . . 51
20 Airflow performance - bottom duct application . . . . . . . . . . . 54
21 RPM selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
22 Indoor blower specifications . . . . . . . . . . . . . . . . . . . . . . . . . 56
1 Unit shipping bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Barometric relief hood - shipping location . . . . . . . . . . . . . . . 5
3 Compressor section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Component location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 4 point and 6 point load weight for W units . . . . . . . . . . . . . . 10
6 4 point and 6 point load weight for V units . . . . . . . . . . . . . . 10
7 Center of gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8 ZT078-102 physical dimensions . . . . . . . . . . . . . . . . . . . . . . 12
9 ZT120-150 physical dimensions . . . . . . . . . . . . . . . . . . . . . . 13
10 ZT078-150 unit bottom duct openings . . . . . . . . . . . . . . . . . 15
11 ZT078-150 unit electrical entry . . . . . . . . . . . . . . . . . . . . . . . 16
12 ZT078-150 unit left/end duct opening . . . . . . . . . . . . . . . . . . 18
13 ZT078-150 roof curb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
14 ZT078-150 transition roof curb . . . . . . . . . . . . . . . . . . . . . . . 19
15 Side panels with hole plugs . . . . . . . . . . . . . . . . . . . . . . . . . 20
16 Return down flow plenum with panel . . . . . . . . . . . . . . . . . . 20
17 Discharge panel in place . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table of contents
Air balance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Checking air quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Cooling operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Cooling Operation Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Reheat mode sequence of operation . . . . . . . . . . . . . . . . . . . 62
Electric heating sequence of operations . . . . . . . . . . . . . . . . . 64
Electric heat operation errors . . . . . . . . . . . . . . . . . . . . . . . . 64
Gas heating sequence of operations. . . . . . . . . . . . . . . . . . . . 64
Ignition control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Gas heating operation errors . . . . . . . . . . . . . . . . . . . . . . . . 65
Cooling start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Gas heat start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Checking gas heat input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Smart Equipment™ unit control board . . . . . . . . . . . . . . . . . . . . . 70
Charging the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Start-up sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
List of tables
23 Power exhaust specifications . . . . . . . . . . . . . . . . . . . . . . . . 56
24 Motor sheave datum diameters . . . . . . . . . . . . . . . . . . . . . . 58
mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
26 Electric heat limit setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
27 Electric heat anticipator setpoints . . . . . . . . . . . . . . . . . . . . . 64
28 Gas heat anticipator setpoints . . . . . . . . . . . . . . . . . . . . . . . . 66
29 Gas rate cubic feet per hour . . . . . . . . . . . . . . . . . . . . . . . . . 68
30 Gas heat stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
31 Gas heat limit control settings . . . . . . . . . . . . . . . . . . . . . . . . 68
33 Ignition control flash codes . . . . . . . . . . . . . . . . . . . . . . . . . . 76
34 ZT078 charging table - system 1 . . . . . . . . . . . . . . . . . . . . . 77
35 ZT078 charging table - system 2 . . . . . . . . . . . . . . . . . . . . . 77
36 ZT090 charging table - system 1 . . . . . . . . . . . . . . . . . . . . . 78
37 ZT090 charging table - system 2 . . . . . . . . . . . . . . . . . . . . . 78
38 ZT102 charging table - system 1 . . . . . . . . . . . . . . . . . . . . . 79
39 ZT102 charging table - system 2 . . . . . . . . . . . . . . . . . . . . . 79
40 ZT120 charging table - system 1 . . . . . . . . . . . . . . . . . . . . . 80
41 ZT120 charging table - system 2 . . . . . . . . . . . . . . . . . . . . . 80
42 ZT150 charging table - system 1 . . . . . . . . . . . . . . . . . . . . . 81
43 ZT150 charging table - system 2 . . . . . . . . . . . . . . . . . . . . . 81
List of figures
18 Side panels for economizer hood tops . . . . . . . . . . . . . . . . . 21
19 Condensate drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
20 Field wiring disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
21 Typical control wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
22 Side entry gas piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
23 Bottom entry gas piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
24 Simplified VFD wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
25 SE-ECO1001-0 economizer controller . . . . . . . . . . . . . . . . . 44
26 Belt adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
27 Altitude/temperature correction factors . . . . . . . . . . . . . . . . 49
28 Dry coil delta P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
29 Cooling operation piping schematic - circuit no. 1 . . . . . . . . 63
30 Reheat operation piping schematic - circuit no. 1 . . . . . . . . 63
31 Typical flame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
32 Typical two stage gas valve . . . . . . . . . . . . . . . . . . . . . . . . . 69
33 Unit control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
6021980-UIM-A-1120
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Table of Contents
Related Manuals for York ZT102
Summarization of Contents
General
Safety Considerations
Important safety alerts and guidelines for handling the unit, including warnings and cautions.
Inspection
Steps to inspect the unit for damage upon receipt and note any issues.
Reference
List of related documents and information available for the unit.
Renewal Parts
Information on how to contact the parts distribution center for authorized replacement parts.
Approvals
Details of CSA certifications for cooling, heating, and installation requirements.
Nomenclature
Explanation of the model number coding system to identify unit features.
Limitations
Constraints and conditions that must be followed for unit installation.
Filters
Details on filter types, installation, and maintenance for optimal performance.
Power and Control Wiring
Requirements for electrical wiring, fuses, and disconnects per codes.
Optional Electric Heat
Information on factory-installed electric heaters and their single-point power supply.
Optional Gas Heat
Details on optional gas heating components and their features.
Gas Piping
Guidelines for sizing and installing gas piping based on codes and gas flow.
Gas Connection
How to route gas supply lines and connection recommendations.
LP Units, Tanks and Piping
Specific requirements and considerations for LP gas installation.
Vent and Combustion Air
How to manage vent and combustion air for heating operations.
Options and Accessories
Overview of available unit options and accessories.
Smoke Detectors
Information on factory-installed smoke detectors and their limitations.
Motorized Outdoor Damper
Details on motorized outdoor dampers as options.
Economizer
Information on economizer options and installation.
Power Exhaust
Details on power exhaust options and installation.
Phasing
Procedures for checking and correcting unit phasing for proper rotation.
Air Balance
Procedures for balancing airflow in the supply and return ducts for optimal performance.
Installation
Installation Safety Information
Critical safety warnings and guidelines for the installation process.
Preceding Installation
Steps to take before beginning the main installation, including bracket removal.
Rigging and Handling
Safe procedures for moving and lifting the unit using appropriate equipment.
Location
Guidelines for selecting a suitable installation site for the unit.
Clearances
Required space around the unit for proper operation and service access.
Unit Side Duct Openings
Dimensions for side duct connections for different unit models.
Ductwork
Guidelines for designing and installing ductwork according to industry standards.
Condensate Drain
Instructions for connecting the condensate drain properly.
Supply Air Drive Adjustment
How to adjust blower speed for optimal airflow using motor sheaves.
Compressors
Compressor Protection
Methods used to protect compressors from damage, including ASCD and minimum run time.
Economizer Sequences
Economizer Minimum Position Sequences
Describes different economizer minimum position control strategies.
Low Ambient Minimum Position
How low ambient conditions affect economizer operation.
Air Monitoring Station Reset
How air monitoring affects economizer damper position.
Demand Ventilation
How demand ventilation influences economizer operation.
Free Cooling Changeover Options
Different options for selecting free cooling modes.
CV Option B Thermostat Sequence
Thermostat sequence for CV option B.
CV Option A Occupied
Economizer operation when the space is occupied for CV option A.
CV Option B Occupied
Economizer operation when the space is occupied for CV option B.
CV Option A and Option B Unoccupied
Economizer operation when the space is unoccupied.
VAV Unit Sensor Option A
Economizer operation for VAV systems with sensor option A.
VAV Unit Sensor Option B
Economizer operation for VAV systems with sensor option B.
Economizer Loading
How the economizer controls loading.
Smart Equipment™™ Economizer Board
Smart Equipment™™ Economizer Board - Analog Inputs
Description of analog input connections and functions on the economizer board.
Smart Equipment™™ Economizer Board - LED Details
Explanation of the LED indicators on the economizer board.
Smart Equipment™™ Economizer Board - SA Bus Details
Details of the SA bus communication connections.
Smart Equipment™™ Economizer Board - Analog Outputs
Description of analog output connections and functions.
Smart Equipment™™ Economizer Board - Binary Outputs
Description of binary output connections and functions.
Smart Equipment™™ Economizer Board - 24V~ IN Connections
Description of 24V input connections.
Indoor Air Quality
How indoor air quality is monitored and affects operation.
Electric Heating Sequence of Operations
Two-Stage Heating
Operation of the electric heater in two stages.
Electric Heat Operation Errors
Troubleshooting common electric heat errors.
Safety Controls
Safety controls for electric heat units.
Reset
How to reset heating controls.
Electric Heat Anticipator Setpoints
Setting the electric heat anticipator.
Gas Heating Sequence of Operations
First Stage of Heating
Operation during the first stage of gas heating.
Second Stage of Heating
Operation during the second stage of gas heating.
Retry Operation
What happens when ignition fails.
Recycle Operation
Process for when flame is lost after stabilization.
Gas Heating Operation Errors
Troubleshooting common gas heating errors.
Safety Controls
Safety controls for gas heat units.
Checking Gas Heat Input
Determining the Rate of Gas Flow (Second Stage)
Method for measuring gas flow for the second stage.
Determining the Rate of Gas Flow (First Stage)
Method for measuring gas flow for the first stage.
Calculating the Cubic Feet of Gas Consumed Per Hour
Formula for calculating gas consumption per hour.
Adjusting the Manifold Gas Pressure
How to adjust gas valve manifold pressure.
Adjusting the Temperature Rise
How to adjust temperature rise in gas heat.
Navigation Components for the Smart Equipment™™ Control Board
Smart Equipment™™ Unit Control Board
Details of the Smart Equipment unit control board (UCB).
Start-Up Sheet
START-UP & SERVICE DATA INSTRUCTION
General guidelines for start-up and service data collection.
WARRANTY STATEMENT
Information regarding the equipment warranty policy.
EQUIPMENT STARTUP
How to complete the start-up procedure using available tools.
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