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York ZF 180 Series - User Manual

York ZF 180 Series
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R-410A
ZF SERIES
15 & 20 Ton/53 & 70 KW
50 Hertz
1061903-XIM-A-0713
TABLE OF CONTENTS
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Optional Gas Heat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Options/Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Economizer And Power Exhaust Set Point Adjustments . 22
ZF180-240 Side Duct Application . . . . . . . . . . . . . . . . . . . 28
Air Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Cooling Sequence Of Operation . . . . . . . . . . . . . . . . . . . . 34
No Outdoor Air Options . . . . . . . . . . . . . . . . . . . . . . . . . 34
Cooling Operation Errors . . . . . . . . . . . . . . . . . . . . . . . . 35
Electric Heating Sequence Of Operations . . . . . . . . . . . . 36
Electric Heat Operation Errors . . . . . . . . . . . . . . . . . . . . 36
Gas Heating Sequence Of Operations . . . . . . . . . . . . . . . 37
Gas Heating Operation Errors . . . . . . . . . . . . . . . . . . . . 37
Start-Up (Cooling) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Start-Up (Gas Heat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Checking Gas Heat Input . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Unit Control Board Option Setup . . . . . . . . . . . . . . . . . . . . . . 49
Option Byte Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Heat Delay Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
LIST OF TABLES
1 ZF180-240 Unit Limitations . . . . . . . . . . . . . . . . . . . . . . . . 6
2 ZF180-240 Unit Weights Imperial . . . . . . . . . . . . . . . . . . . 8
3 ZF180-240 Unit Weights Metric . . . . . . . . . . . . . . . . . . . . 8
4 ZF180-240 Unit Accessory Weights Metric . . . . . . . . . . . . 8
5 ZF180-240 Unit Accessory Weights Imperial . . . . . . . . . . 8
6 Utilities Entry Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7 ZF180-240 Unit Clearances . . . . . . . . . . . . . . . . . . . . . . 11
8 Control Wire Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
10 ZF180-240 Physical Data . . . . . . . . . . . . . . . . . . . . . . . . 18
11 Electric Heat Minimum Supply Air Imperial . . . . . . . . . . . 19
12 Electric Heat Minimum Supply Air Metric . . . . . . . . . . . . 19
13 Gas Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
14 Gas Pipe Sizing - Capacity of Pipe . . . . . . . . . . . . . . . . . 20
15 Gas Heat Minimum Supply Air Imperial . . . . . . . . . . . . . 20
16 Gas Heat Minimum Supply Air Metric . . . . . . . . . . . . . . . 20
17 Altitude/Temperature Correction Factors Imperial . . . . . 25
18 Altitude/Temperature Correction Factors Metric . . . . . . . 25
19 Air Flow Performance - Side Duct Application . . . . . . . . 28
20 Air Flow Performance - Bottom Duct Application . . . . . . 30
21 RPM Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
22 Indoor Blower Specifications . . . . . . . . . . . . . . . . . . . . . . 32
23 Power Exhaust Specifications . . . . . . . . . . . . . . . . . . . . 32
24 Additional Static Resistance Imperial . . . . . . . . . . . . . . . 33
25 Additional Static Resistance Metric . . . . . . . . . . . . . . . . 33
26 Limit Control Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
27 Electric Heat Anticipator Setpoint . . . . . . . . . . . . . . . . . . 37
28 Gas Heat Limit Control Setting . . . . . . . . . . . . . . . . . . . . 38
29 Gas Heat Anticipator Setpoints . . . . . . . . . . . . . . . . . . . . 39
30 Gas Rate Cubic Feet Per Hour . . . . . . . . . . . . . . . . . . . . 40
31 Unit Control Board Flash Codes . . . . . . . . . . . . . . . . . . . 48
32 Heat Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
LIST OF FIGURES
1 ZF180-240 Component Location . . . . . . . . . . . . . . . . . . . 6
2 Unit 4 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 Unit 6 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Center of Gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5 Unit Dimensions - ZF Cool & Electric Heat . . . . . . . . . . . 9
6 Unit Dimensions - ZF Gas Heat . . . . . . . . . . . . . . . . . . . . 9
7 ZF180-240 Unit Dimensions Rear View . . . . . . . . . . . . . 10
8 ZF180-240 Unit Dimensions Rain Hood . . . . . . . . . . . . 11
9 Roof Curb Dimensions (All Models) . . . . . . . . . . . . . . . . 12
10 Roof Curb Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
11 Unit Curb And Applications . . . . . . . . . . . . . . . . . . . . . . 12
12 Fixed Outdoor Air Damper . . . . . . . . . . . . . . . . . . . . . . . 13
13 Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
14 Field Wiring Disconnect - Cooling Unit With/Without Electric
Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
15 Typical Field Wiring 24 Volt Thermostat . . . . . . . . . . . . 16
16 External Supply Connection External Shut-Off . . . . . . . 20
17 Bottom Supply Connection External Shut-Off . . . . . . . . 20
18 Vent and Combustion Air Hood . . . . . . . . . . . . . . . . . . . 22
19 Enthalpy Set Point Chart . . . . . . . . . . . . . . . . . . . . . . . . 23
20 Honeywell Economizer Control W7212 . . . . . . . . . . . . . 24
21 Belt Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
22 Altitude/Temperature Correction Factors Imperial . . . . . 26
23 Altitude/Temperature Correction Factors Metric . . . . . . 26
24 Pressure Drop Across A Dry Indoor Coil Vs. Supply Air CFM
For All Unit Tonnages . . . . . . . . . . . . . . . . . . . . . . . . . . 32
25 Gas Valve Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
26 Gas Heat Limit And Auxiliary Location Down Discharge
Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
27 Gas Heat Limit and Auxiliary Location Side Discharge
Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
28 Gas Valve and Controls . . . . . . . . . . . . . . . . . . . . . . . . . 39
29 Proper Pilot Flame Adjustment . . . . . . . . . . . . . . . . . . . 41
30 Typical Flame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
31 Typical Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
32 Unit Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
33 Start-Up & Service Data Instruction . . . . . . . . . . . . . . . . 50

Table of Contents

Questions and Answers

  • J
    Jessica Ross DDSAug 2, 2025
    What to do if compressor #1 on my York ZF 180 doesn't start when cooling is needed?
    • A
      Alexis JonesAug 3, 2025
      If compressor #1 doesn't start when cooling is needed (and no economizer is installed or the economizer isn't providing free cooling), check the following: * Verify line voltage at the compressor contactor, M1, ensuring the contactor is engaged. Inspect for loose wiring between the contactor and the compressor. * If the compressor housing is hot, it may be off due to its inherent protection. Cancel any cooling requests and allow it to cool down and reset. Then, test again. * Check for 24 volts at the M1 coil. If the voltage is present but M1 isn't engaged, replace the contactor. * If M1 is engaged and voltage is supplied, yet the compressor doesn't operate, replace the compressor.
  • P
    Paul BakerAug 7, 2025
    What to do if the York Air Conditioner supply air blower motor won't start after a delay?
    • T
      Taylor JonesAug 7, 2025
      If the supply air blower motor in your York Air Conditioner doesn't start after a short delay, try the following: * Ensure the thermostat fan switch is in the ON position. * Verify line voltage is supplied to the M3 contactor and that the contactor is engaged. For units with VFD, check voltage to the M3-Auxiliary contacts. Also, inspect for loose wiring between the contactor and the motor. * If the motor housing is hot, the motor may be off due to internal protection. Cancel any thermostat calls, set the fan to AUTO, and allow the motor to cool down and reset. * Check for 24 volts at the M3 coil. If voltage is present but M3 isn't engaged, replace the contactor. * If M3 is engaged and voltage is supplied, but the motor still doesn't operate, replace the motor.
  • M
    Michelle WolfeAug 12, 2025
    Why is the compressor #1 not working on my York Air Conditioner while the blower motor is running?
    • S
      Sandra GallagherAug 12, 2025
      If the supply air blower motor is running, but compressor #1 isn't, here's what you can check: * See if compressor #1 is locked out by checking the UCB for alarms. * Confirm line voltage is present at the compressor contactor (M1) and that the contactor is engaged. Inspect for any loose wiring between the contactor and the compressor. * If the compressor housing is hot, it might be off due to inherent protection. Cancel any cooling calls and allow the compressor to cool down and reset. * Verify 24 volts are present at the M1 coil. If voltage is present but M1 isn't engaged, replace the contactor. * If M1 is engaged and voltage is supplied, but the compressor remains off, replace the compressor.
  • T
    Travis CollinsAug 22, 2025
    What to do if pilot light is on, but main burners won't ignite on my York Air Conditioner?
    • D
      Daniel ValdezAug 23, 2025
      If the pilot burner ignites, but the ignitor continues to spark and the main burners do not ignite, you can: * Perform the same checks and adjustments as described in the previous section. * Check the supply pressure as described in “POST START CHECK LIST” page 40. Make adjustments as necessary. * Ensure that the pilot burner is not bent or damaged. * Confirm that the ground connections at the pilot burner, gas valve, and ignitor control are intact.
  • A
    Ashley RogersAug 27, 2025
    Why won't my York ZF 180 Air Conditioner furnace light, even though the draft motor is running?
    • B
      Brady JohnsonAug 28, 2025
      If the draft motor runs, but the furnace doesn't light and the sparker doesn't spark: * The ignition control may be locked out due to flame roll out. Remove 24V from the ignition controls at the unit or by resetting the room thermostat. After resetting 24V, check for proper furnace operation. * Check for 24 volts at terminal 4 of (RW12) and (RW2-1). If 24 volts is not present, the centrifugal switch has not closed or has gone bad. Check the line voltage to the unit - if it is correct, replace the draft motor.
  • D
    David JonesNov 17, 2025
    How to fix a York ZF 180 when the draft motor runs but the blower motor doesn't start?
    • T
      Timothy FrostNov 17, 2025
      If the draft motor runs but the supply air blower motor doesn't start after a short delay, try these steps: * Ensure the thermostat fan switch is in the “ON” position. * Verify line voltage is being supplied to the contacts of the M3 contactor, and that the contactor is pulled in. For units with VFD, check that line voltage is being supplied to the M3-Auxiliary contacts. Check for loose wiring between the contactor and the supply air blower motor. * If the motor housing is hot, the motor may be off on inherent protection. Cancel any thermostat calls and set the fan switch to “AUTO”, wait for the internal overload to reset. Test again when cool. * Check for 24 volts at the M3 coil. If 24 volts is present at M3 but M3 is not pulled in, replace the contactor. * If line voltage is s...

Summary

General

Safety Considerations

Discusses safety alert symbols, DANGER, WARNING, and CAUTION signals for safe operation.

Nomenclature

Model Number Components

Details components like category, identifier, capacity, heat type, options, and airflow.

Installation

Safety and Limitations

Provides essential safety instructions and outlines unit installation restrictions.

Location

Rigging And Handling

Provides detailed guidelines and precautions for safely rigging and handling the unit.

Clearances

Specifies required clearances for proper unit operation, servicing, and installation.

Ductwork

Fixed Outdoor Air Intake Damper

Condensate Drain

Compressors

Power And Control Wiring

Power Wiring Detail

Provides details on connecting power wiring to the unit, including sizing and disconnect requirements.

Thermostat Wiring

Space Sensor

Details the location and installation of the space sensor for thermostat operation.

Optional Electric Heat

Optional Gas Heat

Gas Piping

Discusses proper sizing, codes, and recommendations for gas piping installation.

Gas Connection

Lp Units, Tanks And Piping

Provides guidelines for LP gas units, tanks, and piping, including pressure and safety standards.

Options;Accessories

Heater and Damper Options

Details electric heat, economizer/damper rain hoods, and power exhaust/relief damper rain hoods.

Set Point Adjustments

Guides for adjusting economizer, power exhaust, and enthalpy set points.

Phasing

Blower Rotation

Instructions for checking and correcting supply air blower rotation direction.

Belt Tension

Explains how to adjust belt tension for proper blower operation.

Air Balance

Supply Air Drive Adjustment

Operation

Cooling Sequences

Details cooling operation sequences including blower modes and economizer functions.

Economizer Modes

Explains operation with single/dual enthalpy sensors and power exhaust for economizers.

Cooling Operation Errors

Safety Switch Errors

Details errors related to high-pressure, low-pressure limit switches, and freezestats.

Low Ambient Operation

Explains how the unit operates in low ambient cooling mode.

Safety Controls

Electric Heating Sequence Of Operations

Heating Stages

Describes operation for single and two-stage electric heating sequences.

Electric Heat Operation Errors

Temperature Limit

Explains how temperature limits affect blower operation and error codes in electric heat.

Safety Controls

Temperature Limit Switch (TLs)

Describes temperature limit switches that protect against high temperature conditions.

Electric Heat Anticipator Setpoints

Gas Heating Sequence Of Operations

Gas Heating Operation Errors

Temperature Limit

Explains how temperature limits affect blower operation and error codes in gas heat.

Gas Valve and Safety Controls

Gas Valve Operation

Explains the function and monitoring of the gas valve by the UCB.

Gas Heat Safety Features

Details safety controls including limit switches, centrifugal switch, redundant valve, flame sensor, and rollout switch.

Start-Up Procedures

Cooling Start-Up Checklist

Lists essential checks to perform before starting the cooling system after installation.

Gas Heat Start-Up Checklist

Lists essential checks before starting the gas heating system.

Gas Burner Operation

Lighting Main Burners

Step-by-step instructions for safely lighting the main burners.

Gas Heat Input and Pressure

Guides for checking gas heat input and manifold pressure adjustments.

Shut Down

Gas Heat Adjustments

Temperature Rise and Burner Settings

Guides for setting temperature rise and adjusting burner air shutters and pilot flame.

Troubleshooting

Cooling Troubleshooting Guide

Troubleshooting steps for blower motor and compressor issues during cooling operation.

Gas Heat Troubleshooting

Draft Motor and Ignition Issues

Troubleshooting steps if the draft motor does not energize or ignition fails during heating.

Unit Control Board Diagnostics

Flash Codes Explained

Explains how to interpret unit control board flash codes for troubleshooting.

Control Board Configuration

Option Byte and Heat Delay Setup

Guides for setting unit options (byte setup) and heat delay parameters via the control board.

Start-Up & Service Data

Safety Warnings and Application Data

Design Application Information

Section for inputting design CFM, static pressures, and other application data.

REFERENCE

Inspection Checklists

Lists various inspection points for general, air moving, exhaust, and economizer systems.

Operating Measurements

Air Flow and Electrical Data

Details measurements for airflow, motor data, and electrical loads.

Operating Measurements and Refrigerant Safeties

Cooling and Gas Heating Measurements

Records operating pressures, temperatures, and refrigerant safety checks for cooling and heating.

Operational Checks

Staging Controls and Final Inspection

Verifies proper operation of staging controls and performs final inspection checks before completion.

York ZF 180 Series Specifications

General IconGeneral
Cooling Capacity18000 BTU/h
Heating Capacity18000 BTU/h
Heating Seasonal Performance Factor (HSPF)9.0
RefrigerantR410A
TypeSplit System Air Conditioner
Power Supply208-230V, 60Hz, 1 Phase

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