York IDM030B21E Series, Service Manual

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SM-16005-rev.2
iii
1. Introduction
This Service Manual concentrates on the heat pump air conditioning units.
Read this manual carefully before performing service.
2. Important Safety Instructions
This manual should be considered as a permanent part of the air conditioning equipment and should
remain with the air conditioning equipment.
(Transportation/Installation Work) > (Refrigerant Piping Work) > (Electrical Wiring Work) > (Ref. Charge Work) > (Test
Run) > (User)
Signal Words
Indicates a hazardous situation that, if not avoided, could result in death or
serious injury.
Indicates a hazardous situation that, if not avoided, could result in minor or
moderate injury.
Indicates information considered important, but not hazard-related
(for example, messages relating to property damage).
General Precautions
To reduce the risk of serious injury or death, read these instructions
thoroughly and follow all warnings or cautions included in all manuals that
accompanied the product and are attached to the unit. Refer back to these
instructions as needed.
● This system should be installed by personnel certified by Johnson Controls, Inc. Personnel must be
qualified according to local, state and national building and safety codes and regulations. Incorrect
installation could cause leaks, electric shock, fire or explosion. In areas where Seismic ‘’Performance
requirements are specified, the appropriate measures should be taken during installation to guard
against possible damage or injury that might occur in an earthquake if the unit is not installed
correctly, injuries may occur due to a falling unit.
● Use appropriate Personal Protective Equipment (PPE), such as gloves and protective goggles and,
where appropriate, have a gas mask nearby. Also use electrical protection equipment and tools suited
for electrical operation purposes. Keep a wet cloth and a fire extinguisher nearby during brazing. Use
care in handling, rigging, and setting of bulky equipment.
● When transporting, be careful when picking up, moving and mounting these units. Although the
unit may be packed using plastic straps, do not use them for transporting the unit from one location
to another. Do not stand on or put any material on the unit. Get a partner to help, and bend with
your knees when lifting to reduce strain on your back. Sharp edges or thin aluminum fins on the air
conditioner can cut fingers, so wear protective gloves.
● Do not touch or adjust any safety devices inside the indoor or outdoor units. All safety features,
disengagement, and interlocks must be in place and functioning correctly before the equipment is
put into operation. If these devices are improperly adjusted or tampered with in any way, a serious
accident can occur. Never bypass or jump-out any safety device or switch.
● Johnson Controls will not assume any liability for injuries or damage caused by not following steps
outlined or described in this manual. Unauthorized modifications to Johnson Controls products are
prohibited as they…
◦ May create hazards which could result in death, serious injury or equipment damage.
◦ Will void product warranties.
◦ May invalidate product regulatory certifications.
◦ May violate OSHA standards.