Johnson Controls DHR18CSB21S, Installation And Maintenance Manual

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P5415467
1. Introduction
This manual should be considered as a permanent part of the air conditioning equipment and should
remain with the air conditioning equipment.
This manual concentrates on inverter-driven cooling or heat pump air conditioning units. Read this manual
carefully before installation.
2. Important Safety Instructions
Safety Messages
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
safety 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 quenching 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, Inc. 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.
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