York D3CG090 - User Manual

GENERAL
YORK Model DCG units are single package air conditioners
with gas heat designed for outdoor installation on a rooftop or
a slab.
The units are completely assembled on rigid, permanently
attached base rails. All piping, refrigerant charge, and electrical
wiring is factory installed and tested. The units require only
electric power and duct connections at the point of installation.
The gas-fired heaters have aluminized steel tubular heat
exchangers and spark ignition with proven pilot.
INSPECTION
As soon as a unit is received, it should be inspected for possible
damage during transit. If damage is evident, the extent of the
damage should be noted on the carrier’s freight bill. A separate
request for inspection by the carrier’s agent should be made in
writing. Refer to Form 50.15-NM for additional information.
REFERENCE
Additional information on the design, installation, operation and
service of this equipment is available in the following reference
forms:
• 55.70-N1 - General Installation
• 55.70-N2 - Pre-start & Post-start Check List
• 530.18-N3.2V - Economizer Accessory
• 530.18-N3.4V - Motorized Outdoor Air Damper Accy.
• 530.18-N8.4V - Gas Piping Accessory
• 530.18-N10.1V - Propane Conversion Accessory (USA)
• 530.18-N10.2V - High Altitude Accessory (Nat. Gas)
• 530.18-N10.3V - High Altitude Accessory (Propane)
• 530.18-N10.4V - Propane Conversion Accessory (CAN.)
• 690.15-N25V - Low Ambient Accessory
Renewal Parts:
• Refer to the Renewal Parts Manual for complete listing of
replacement parts on this equipment.
All forms referenced in this instruction may be ordered from:
Publications Distribution Center
Unitary Products Group
P.O. Box 1592, York, Pa. 17405
APPROVALS
Design certified by U.L. & CGA as follows:
1. For use as a forced air furnace with cooling unit.
2. For outdoor installation only.
3. For installation on combustible material.
4. For use with natural gas or propane gas.
®
SUNLINE 2000
GAS / ELECTRIC
SINGLE PACKAGE AIR CONDITIONERS
INSTALLATION INSTRUCTION
Supersedes: 530.18-N10Y (693)
530.18-N10Y (995)
MODELS D3CG090, 102, 120 (STYLE B)
& D4CG150 (STYLE A)
(8.5-9.0 EER)
035-13092
CAUTION
THE ENCLOSED INSTALLATION INSTRUCTIONS AND ANY APPLICABLE
LOCAL, STATE, AND NATIONAL CODES INCLUDING, BUT NOT LIMITED
TO, BUILDING, ELECTRICAL, AND MECHANICAL CODES.
THIS PRODUCT MUST BE INSTALLED IN STRICT COMPLIANCE WITH
WARNING
OPERATION OF THE PRODUCT COULD CAUSE PERSONAL INJURY
OR PROPERTY DAMAGE.
INCORRECT INSTALLATION MAY CREATE A CONDITION WHERE THE
208/230/575 VOLT
MODELS ONLY
208/230/460 VOLT
MODELS ONLY
FOR YOUR SAFETY
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance
.
FOR YOUR SAFETY
If you smell gas:
1. Open windows.
2. Don’t touch electrical switches
3. Extinguish any open flame.
4. Immediately call your gas supplier.
Installer should pay particular attention to the words: NOTE, CAUTION and WARNING . Notes are intended to clarify or make
the installation easier. Cautions are given to prevent equipment damage. Warnings are given to alert installer that personal injury
and/or equipment damage may result if installation procedure is not handled properly.

Summary

General Unit Information

Safety Guidelines and Warnings

Essential safety instructions and precautions for unit operation and installation.

Maintenance and Troubleshooting Overview

Troubleshooting Common Issues

Guidance for diagnosing and resolving operational problems.

Installation Procedures

Installation Limitations and Location

Specifies site requirements, clearances, and environmental considerations for installation.

Rigging, Handling, and Clearances

Ductwork Design and Connection

Component Installation Details

Thermostat and Electrical Wiring

Details on thermostat connection and power/control wiring requirements.

Unit Operation Sequences

Cooling System Operation Sequence

Details on the cooling cycle, preliminary steps, and safety controls.

Safety Controls Overview

Explanation of various safety mechanisms protecting the unit.

Heating Sequence of Operation

Describes the heating cycle, including continuous blower operation.

Operational Adjustments and Checks

Pre-Start Checklist

Essential checks to perform before initial unit startup.

Operating Instructions

Pilot and Main Burner Ignition

Post-Start Gas System Checks

Verification of gas leaks, pressures, and manifold settings after startup.

Gas Pressure and Pilot Adjustments

Maintenance Procedures

Routine Unit Maintenance

Troubleshooting Guide

Blower and Draft Motor Malfunctions

Ignition and Spark Failure Diagnosis

Troubleshooting problems related to the ignition system and spark generation.

Pilot Ignition and Gas Supply Issues

Addressing problems with pilot flame ignition and gas flow.

Advanced Troubleshooting

Pilot Ignition and Gas Odor Problems

Resolving issues where the pilot ignites but a gas odor is present.

Pilot Ignition with Continuous Spark

Troubleshooting pilot ignition problems and continuous sparking.

Main Burner Ignition Failures

Addressing scenarios where the pilot lights but main burners do not ignite.

Burner Flame and Performance Issues

Replacement Parts Identification

York D3CG090 Specifications

General

Brand	York
Model	D3CG090
Category	Air Conditioner
Language	English