Johnson Controls YVAHP072B31S, Service Manual

Page: 1040 / 1796

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Service Manual
OPERATION
1. Safety Summary
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
safety instructions as needed.
Ɣ This system, including this controller, should be installed by personnel certi ¿ ed by Johnson
Controls, Inc. Personnel must be quali ¿ ed according to local, state and national building and safety
codes and regulations. Incorrect installation could cause leaks, electric shock, ¿ re or an explosion.
In areas where Seismic Performance requirements are speci ¿ ed, 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 appropriately correctly, injuries may occur because of a
falling unit
Ɣ Use appropriate Personal Protective Equipment (PPE), such as gloves, protective goggles and
electrical protection equipment and tools suited for electrical operation purposes.
Ɣ When transporting, be careful when picking up, moving and mounting these units. Although the
controller may be packed using plastic straps, do not use them for transporting from one location to
another. Do not stand on or put any material on the controller.
Ɣ When installing the controller cabling to the units, 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, wire around, or
jump-out any safety device or switch.
Ɣ Use only Johnson Controls recommended, provided as standardized, or replacement parts.
Ɣ Johnson Controls shall will not assume any liability for injuries or damage caused by not following
steps outlined or described in this manual. Unauthorized modi ¿ cations to Johnson Controls
products are prohibited as they…
ƕ May create hazards which could result in death, serious injury or equipment damage;
ƕ Will void product warranties;
ƕ May invalidate product regulatory certi ¿ cations;
ƕ May violate OSHA standards;
Take the following precautions to reduce the risk of property damage.
Ɣ Do not touch the main circuit board or electronic components in the controller or remote devices.
Make sure that dust and/or steam does not accumulate on the circuit board.
Ɣ When installing the unit in a hospital or other facility where electromagnetic waves are generated
from nearby medical and/or electronic devices, be prepared for noise and electronic interference
Electromagnetic Interference (EMI). Do not install where the waves can directly radiate into
the electrical box, controller cable, or controller. Inverters, appliances, high-frequency medical
equipment, and radio communications equipment may cause the unit to malfunction.
The operation of the unit may also adversely affect these same devices. Install the unit at least 10
ft. (approximately 3m) away from such devices.
Ɣ Locate the controller at a distance of at least three feet (approximately 1m) between the indoor unit
and electric lighting. Otherwise, the receiver part of the unit may have dif ¿ culty receiving operation
commands.