York YZE SERIES User Manual

035-20401-001 Rev. A (0904)
R-410A
OUTDOOR SPLIT-SYSTEM
HEAT PUMP
MODELS: 15 SEER - YZE / HC5B / HL5B SERIES
2 TO 5 TONS
INSTALLATION MANUAL
CERTIFICATION APPLIES ONLY
WHEN THE COMPLETE
SYSTEM IS LISTED
WITH ARI.
LISTED
This product was manufactured
in a plant whose quality system
is certified/registered as being
in conformity with ISO 9001.
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SECTION I: GENERAL
The outdoor units are designed to be connected to a matching indoor
coil with sweat connect lines. Sweat connect units are factory charged
with refrigerant for a matching indoor coil plus 15 feet of field supplied
lines.
Matching indoor coils are available with a thermal expansion valve or
an orifice liquid feed sized for the most common usage. The orifice size
and/or refrigerant charge may need to be changed for some indoor-out-
door unit combinations, elevation differences or total line lengths. Refer
to Application Data covering “General Piping Recommendations and
Refrigerant Line Length” (Part Number 036-61920-001).
SECTION II: SAFETY
This is a safety alert symbol. When you see this symbol on
labels or in manuals, be alert to the potential for personal
injury.
Understand and pay particular attention to the signal words DANGER,
WARNING, or CAUTION.
DANGER indicates an imminently hazardous situation, which, if not
avoided, will result in death or serious injury
.
WARNING indicates a potentially hazardous situation, which, if not
avoided, could result in death or serious injury
.
CAUTION indicates a potentially hazardous situation, which, if not
avoided may result in minor or moderate injury
. It is also used to
alert against unsafe practices and hazards involving only property dam-
age
Improper installation may create a condition where the operation of
the product could cause personal injury or property damage.
Improper installation, adjustment, alteration, service or mainte-
nance can cause injury or property damage. Refer to this manual
for assistance or for additional information, consult a qualified con-
tractor, installer or service agency.
This product must be installed in strict compliance with the
enclosed installation instructions and any applicable local, state,
and national codes including, but not limited to building, electrical,
and mechanical codes.
R-410A systems operate at higher pressures than R-22 systems.
Do not use R-22 service equipment or components on R-410A
equipment. Service equipment
Must Be Rated for R-410A.
TABLE OF CONTENTS
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
SAFETY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
UNIT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATIONS REQUIRING TXV . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ELECTRICAL CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
EVACUATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
SYSTEM CHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
SYSTEM OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
INSTRUCTING THE OWNER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
LIST OF FIGURES
Typical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Tubing Hanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Underground Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Heat Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Typical Field Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
CFM Selection Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Typical Variable Speed Air Handler Thermostat Wiring . . . . . . . . . . . . . . . . . . . .6
Typical Variable Speed Furnace Thermostat Wiring . . . . . . . . . . . . . . . . . . . . . . 6
Heat Pump Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Demand Defrost Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Defrost Operation Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Hot Heat Pump Indoor Airflow Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Jumper Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
LIST OF TABLES
TEST Input Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Operational Mode Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Status Code Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
X/L Output Categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Operational Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Sensor or Switch Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Wiring Related Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Defrost Initiate Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Table 16 Switch Point Exit Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Air Handler Auxiliary Heat Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Fossil Fuel Furnace Auxiliary Heat Functionality . . . . . . . . . . . . . . . . . . . . . . . . 17
R-410A Saturation Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
15Z24HP Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
15Z36HP Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
15Z48HP Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
15Z60HP Subcooling Charging Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

York YZE SERIES Specifications

General

Brand	York
Model	YZE SERIES
Category	Heat Pump
Language	English

Summary

SECTION I: GENERAL

SECTION II: SAFETY

SECTION III: UNIT INSTALLATION

LOCATION

Select and check the suitability of the location for both the indoor and outdoor unit.

ADD-ON REPLACEMENT/RETROFIT

Steps to follow when replacing an R-22 unit with an R410-A unit.

GROUND INSTALLATION

Install the unit at ground level on a solid base that will not shift or settle.

ROOF INSTALLATION

Ensure roof structure supports unit weight and minimizes sound/vibration transmission.

UNIT PLACEMENT

Provide base, inspect for damage, keep compressor tie-downs tight, position unit.

LIQUID LINE FILTER-DRIER

Details on the bi-flow filter/dryer located on the liquid line.

PIPING CONNECTIONS

Guidance on connecting refrigerant lines for R-410A systems.

PRECAUTIONS DURING BRAZING OF LINES

Brazing procedures for copper-to-copper connections using a phosphorous-copper alloy.

PRECAUTIONS DURING BRAZING SERVICE VALVE

Protect service valve from heat damage during brazing.

SECTION IV: INSTALLATIONS REQUIRING TXV

TXV Installation Steps

Basic steps for installing a TXV, including connecting lines and bulb placement.

Bulb Placement Guidelines

Proper positioning of the TXV bulb on the vapor line for accurate sensing.

SECTION V: ELECTRICAL CONNECTIONS

GENERAL INFORMATION & GROUNDING

Check electrical supply, ensure compliance with codes, and proper grounding.

FIELD CONNECTIONS POWER WIRING

Installing disconnect switch, running power wiring, and making power supply connections.

FIELD CONNECTIONS CONTROL WIRING

Routing and making low voltage wiring connections for thermostat and outdoor unit.

SECTION VI: EVACUATION

SECTION VII: SYSTEM CHARGE

Measurement Method

Adding refrigerant using a calibrated charging cylinder or weighing device.

Subcooling Charging Method

Procedure for charging the system using subcooling temperatures in cooling mode.

SECTION VIII: SYSTEM OPERATION

REQUIRED CONTROL SETUP

Steps to ensure proper system operation, including thermostat wiring and jumper settings.

ANTI-SHORT CYCLE DELAY

Explanation of the 5-minute delay to prevent compressor short cycling.

TEST INPUT

Using the TEST input connector for various testing functions.

LED DIAGNOSTIC INDICATORS

Using LEDs to display operational modes, status, and fault information.

OPERATIONAL MODE DISPLAY

Displaying the active operational mode using onboard LEDs.

STATUS MODE DISPLAY

Displaying unit status codes using LEDs, not representing a fault.

FAULT CODE DISPLAY

How fault codes are displayed using X/L output and LED indicators.

FAULT CODE MEMORY

Storing and displaying up to five fault codes in memory.

Clearing Fault Code Memory

Procedure to clear stored fault codes from the control's memory.

COOLING OPERATION

Details on first, second, and anticipation modes for cooling operation.

HEATING OPERATION

Details on first, second stage, and conventional heat pump heating modes.

Hot Heat Pump Enable (HOT HEAT PUMP) Settings

Enabling the HOT HEAT PUMP jumper for indoor airflow control in heating.

Hot Heat Pump Mode

How the control operates the indoor blower speed in second-stage heating.

Forced Second-Stage Feature

How the control forces second-stage compressor operation based on switch point.

EMERGENCY HEAT

How the control handles emergency heat calls (W signal without Y).

Auxiliary Heat Defrost Operation - Air Handler Mode

Auxiliary heat operation during defrost in air handler mode.

Pipe Freeze Protection Timer - Air Handler Mode Operation

Timer function to prevent pipe freezing when heat pump cannot heat effectively.

AUXILIARY HEAT - FOSSIL FUEL MODE Standard Operation

Standard auxiliary heat operation in fossil fuel mode based on ambient temperature.

Bonnet Sensor - Fossil Fuel Mode

Functionality of the bonnet sensor in fossil fuel mode.

Auxiliary Heat Defrost Operation – Fossil Fuel Mode with Bonnet Sensor

Auxiliary heat operation during defrost in fossil fuel mode with a bonnet sensor.

Auxiliary Heat Defrost Operation - Fossil Fuel Mode without Bonnet Sensor

Auxiliary heat operation during defrost in fossil fuel mode without a bonnet sensor.

Pipe Freeze Protection Timer – Fossil Fuel Mode Operation

Timer function to prevent pipe freezing in fossil fuel mode.

HIGH-PRESSURE SWITCH FAULT

Detects and responds to high-pressure switch faults.

LOW-PRESSURE SWITCH

Detects and responds to low-pressure switch faults.

DISCHARGE LINE TEMPERATURE SENSOR

Optional sensor for monitoring discharge line temperature.

LOCKOUT MODES

Soft Lockout

Conditions and actions for soft lockout mode, including conditions for resetting.

Hard Lockout

Conditions and actions for hard lockout mode, including requirements for resetting.

Wiring or Setting Related Lockouts

Lockouts caused by wiring or setting errors, and how they are reset.

DEFROST OPERATION

General

How the control maintains airflow during heating by melting frost on the outdoor coil.

Operation

Sequence of actions taken by the control to initiate and manage a defrost cycle.

Defrost Curves

Parameters and jumper settings for selecting defrost curves.

Defrost Cycle Initiation

Conditions and delays that trigger a defrost cycle.

Defrost Inhibition

Conditions that prevent a defrost cycle from initiating.

Defrost Termination

How the control terminates a defrost cycle.

JUMPER INPUTS

LTCO - Low Temperature Cutout

Low temperature cutout feature to prevent compressor operation below specified temp.

BP - Balance Point

Balance point feature prevents auxiliary heat operation above a specified temperature.

Defrost Curve

Selection of defrost curve parameters based on jumper position.

FFUEL - Fossil Fuel Furnace Specification

Specifies fossil fuel furnace application for control operation.

HOT HEAT PUMP - Indoor Airflow Control

Enables indoor airflow control for hot heat pump applications.

Y2 LOCK - Compressor Staging

Determines compressor staging, particularly for second-stage cooling anticipation.

SWITCH POINT - Forced Second-Stage Operation

Specifies liquid temperature for forced second-stage compressor operation.

LTCO and BP Jumper Settings

Details on LTCO and BP jumper settings and their impact on operation.

FOSSIL FUEL JUMPER (FFUEL) Setting and Operation

Setting the FFUEL jumper to specify furnace or air handler application and its operational impact.

AUXILIARY HEAT-AIR HANDLER MODE Operation

How the heat pump control energizes auxiliary electric heat in air handler mode.

Low Discharge Line Temperature Faults

INDICATIONS OF PROPER OPERATION

Cooling Operation Indicators

Indicators of proper cooling operation for the unit.

Heating Operation Indicators

Indicators of proper heating operation for the unit.

SECTION IX: INSTRUCTING THE OWNER

SECTION X: WIRING DIAGRAM