General chiller information and safety
Note: Before operating the unit, refer to Chiller A2L Refrigerant Application Data, Form 160.00-
AD10.
About this guide
The contents of this guide include suggested best working practices and procedures. These are
issued for guidance only, and they do not take precedence over the stated individual responsibility
or local safety regulations.
This guide and any other document supplied with the unit are the property of Johnson Controls,
which reserves all rights. They may not be reproduced, in whole or in part, without prior written
authorization from an authorized Johnson Controls representative.
Introduction
YORK YMAE heat pumps are manufactured to the highest design and construction standards to
ensure high performance, reliability, and adaptability to all types of air conditioning installations.
The unit provides chilled water, hot water, or glycol solutions for air conditioning applications and
industrial processes using central station air handling or terminal units.
The unit combines a variable speed control design with industry-leading DC inverter technology
allowing the unit’s compressors and EC fans to operate more efficiently than constant speed units
across all capacity-load and ambient-temperature conditions. It is designed for part-load efficiency
exceeding ASHRAE 90.1 2022 standard.
Ensure that only a professional rigger does the rigging and lifting, in accordance with a written
rigging and lifting plan. The most appropriate rigging and lifting method depends on job specific
factors, such as the rigging equipment available and site needs. As a result, a professional rigger
must determine an appropriate rigging and lifting method, and it is beyond the scope of this guide
to specify rigging and lifting details.
Note: The rigger must locate the center of gravity through trial lifts to account for possible
variations in unit configurations. Contact your nearest Johnson Controls Sales Office for weight
data. See Rigging, handling, and storage for more details.
This guide contains all the information required for installing, commissioning, operating, and
maintaining the unit. Read the relevant information thoroughly before attempting to operate or
service the unit. Ensure only suitably trained and qualified personnel perform the installation,
commissioning, operation, and maintainence procedures.
The manufacturer is not liable for any injury or damage caused by incorrect installation,
commissioning, operation, or maintenance resulting from a failure to follow the procedures and
instructions detailed in the guide.
Warranty
Johnson Controls warrants YMAE chillers in accordance with the Limited Warranty Engineered
Systems Equipment procedure. Refer to Form 50.05-NM2.
Johnson Controls warrants all equipment and materials against defects in workmanship and
materials for a period of eighteen months from date of shipment or 12 months from date of
startup, whichever comes first, unless labor or extended warranty has been purchased as part of
the contract. The warranty is limited to parts only replacement and shipping of any faulty part, or
sub-assembly, which has failed due to poor quality or manufacturing errors. All claims must be
supported by evidence that the failure has occurred within the warranty period, and that the unit
has been operated within the designed parameters specified.
YMAE Air-Cooled Inverter Scroll Chiller and Heat Pump10
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