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FORM 145.15-IOM7 (412)
JOHNSON CONTROLS 3
CHANGEABILITY OF THIS DOCUMENT
In complying with Johnson Controls policy for continu-
ous product improvement, the information contained in
this document is subject to change without notice.
While Johnson Controls makes no commitment to up-
date or provide current information automatically to the
manual owner, that information, if applicable, can be
obtained by contacting the nearest Johnson Controls
service office.
It is the responsibility of operating/service personnel as
to the applicability of these documents to the
equipment in question. If there is any question in the
mind of operating/service personnel as to the
applicability of these documents, then, prior to working
on the equipment, they should verify with the owner
whether the equipment has been modified and if
current literature is available.
TABLE OF CONTENTS
Safety Symbols………………………………………………………… 2
Changeability of This Document…………………………………….. 3
General Information……………………………………………………. 4
Installation –
Pre-Installation Inspection of Equipment………………….………4
Rigging……………………………………………………………..... 4
Installation Site……………………………………………………… 4
Unit Mounting……………………………………………………….. 5
Separation of Unit (Evaporator / Condenser)…………………… 5
Water Piping………………………………………………………… 5
Dimensional Data…..…………………………………………………. 6
Ductwork…………..…………………………………………………. 10
Blower Discharge Conversion……………………………………….. 10
Electrical Wiring……………………...……………………………….. 11
Typical Electrical Schematic……………………………………... 12
Nameplate Electrical Data………………………………………... 16
Fan Performance Data……………………………………………….. 17
Motor and Drive Data……………………………………………… 19
Blower RPM Adjustment………………………………………….. 20
Water Pressure Drop Data………………….……………………..… 21
Start-Up and Operation………………………………………………. 22
Refrigerant Charges………………………………………………. 22
Pressure Switch Settings…………………………………………. 22
Microprocessor Controller……………………………………....…… 23
Operation……………………………….………………………….. 23
Safety Switches……….…………………………………………… 23
Safety Controls…………………...........………………………….. 24
Microprocessor Flash Codes…………………………………….. 24
Maintenance/Service………………………………………………… 26
Filters………………..……………………………………………… 26
Evaporator Coil……………………………………………............. 26
Refrigerant Circuits………………………………………………... 26
Blower.……………………………………………………………… 26
Drive Belts………………………………………………………….. 26
Warranty……………….………………………………………………. 27
R-410A Service Procedures - Quick Reference Guide…………...28