Introduction - McQuay MicroTech II Operation Manual

Introduction

This manual provides information regarding the MicroTech
II control system used in the McQuay RoofPak applied roof-
top unit product line. It specifically describes the sequences
of operation and programmable options for units with fac-
tory equipped space comfort control (SCC) software. It also
includes information regarding how to use the keypad/dis-
play to enter and display data.
For information regarding MicroTech II components,
input/output configurations, field wiring options and require-
ments, and service procedures, refer to IM696, MicroTech II
Applied Rooftop Unit Controller. For installation and startup
instructions and general information regarding a particular
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with this instruction manual, may cause interference to radio communications. It has been tested
and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These
limits are designed to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user is required to correct the interference at his own expense.
McQuay International disclaims any liability resulting from any interference or for the correction
thereof.
Electric shock hazard. Can cause personal injury or equipment damage.
This equipment must be properly grounded. Connections and service to the MicroTech II control panel must
be performed only by personnel that are knowledgeable in the operation of the equipment being controlled.
Excessive moisture in the control panel can cause hazardous working conditions and improper
equipment operation.
When servicing this equipment during rainy weather, the electrical components in the main control panel
must be protected from the rain.
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rooftop unit, refer to the applicable model-specific installa-
tion and maintenance manual (refer to Table 1).
Table 1: Model-Specific Rooftop Unit Installation
Literature
Rooftop Unit Model
RPS (18-40 tons)
RFS (18-40 tons)
RCS (18-40 tons)
RPS (45-135 tons)
RFS (45-135 tons)
RCS (45-135 tons)
RDT
RDS (800 & 802)
RAH
NOTICE
WARNING
WARNING
Installation & Maintenance Data
Bulletin Number
IM 157
IM 485
IM 486
IM 178
IM 487
OM 138