FORM 150.72-EG6 (516)
JOHNSON CONTROLS
7
Communications
The YLAA chiller comes standard with native communication capability for BACnet (MS/
TP), Modbus, and N2, with optional capabilities available for LON. The standard unit ca-
pabilities include built-in-scheduling, remote start-stop, remote water temperature reset
and up to two steps of demand (load) limiting depending on model. The standard control
panel can be directly connected to a Johnson Controls Building Automated System via the
standard factory-installed RS232 communication port.
Serviceability
Minimal maintenance is required to keep the unit operating at maximum performance. If
service should ever be required, the YLAA chiller has been designed to simplify the work,
keeping costs down. The layout of the chiller locates all the major components that can
be serviced near the outside edge. The condenser heat exchangers are light enough that
no crane is required for replacement. And when it’s time to clean them, city tap water,
with water pressure typical of a spray from a common garden hose, is all that’s needed.
AHRI CERTIFICATION PROGRAM
YORK YLAA chillers have been tested and certified by Air-Conditioning, Heating and Re-
frigeration Institute (AHRI) in accordance with the latest edition of AHRI Standard 550/590
(I-P). Under this Certification Program, chillers are regularly tested in strict compliance
with this Standard. This provides an independent, third-party verification of chiller perfor-
mance. Refer to the AHRI site at www.ahrinet.org/ for complete Program Scope, Inclu-
sions, and Exclusions as some options listed herein fall outside the scope of the AHRI
certification program. For verification of certification, go to the AHRI Directory at www.
ahridirectory.org.
Rated in accordance with the latest
issuance of AHRI Standard 550/590
and 551/591.
Introduction (Cont'd)
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