McQuay MQTHI5 Installation Manual
Installation Manual
Single Duct VAV Terminals
Model(s): MQTHI5
IM 1093
Group: Controls
Part Number: IM 1093
Date: September 2010
Supersedes: New
© 2010 McQuay International
Table of Contents
Table of Contents..................................................................................................................2
Revision History....................................................................................................................................3
Limited Warranty..................................................................................................................................3
Installation .............................................................................................................................5
Receiving Inspection.........................................................................................................................5
Hanging/Installation Requirements.............................................................................................. ..... 5
Minimum clearance For Access........................................................................................................7
Connecting Ductwork ....................................................................................................................... 7
Field Electrical Wiring......................................................................................................................7
MQTHI5 Single Duct Terminal Units With Electric Heat................................................................ 7
MQTHI5 Single Duct Terminal Units With Hot Water Coils .......................................................... 8
Controls.............................................................................................................................................8
Labeling ............................................................................................................................................8
MQTHI5 Flow Sensor.......................................................................................................................8
Troubleshooting....................................................................................................................9
Investigating Noise Complaints........................................................................................................9
Discharge Noise................................................................................................................ ................ 9
Radiated Noise..................................................................................................................................9
Controls.............................................................................................................................................9
Electric Duct Heater..........................................................................................................................9
Specific Electric Heat Troubleshooting Procedures:.......................................................................10
2 IM 1093
Revision History
IM 1093 Date: October 2010 Initial release
Reference Documents
Number Company Title Source
ANSI/ASHRAE
135-2001
OM 1092 McQuay International
American Society of Heating,
Refrigerating and AirConditioning Engineers
BACnet® - A Data Communication Protocol for Building
Automation and Control Networks
Operators Manual, Delivered VAV Systems
www.ashrae.org
www.mcquay.com
ED 15126 McQuay International Maverick™ I Unit Controller Protocol Information, BACnet
ED 15113-2 McQuay International BACnet Protocol Implementation Conformance Statement
ED 15112-7 McQuay International BACnet and LONWORKS Protocol Information for Rooftop
and LONWORKS® Networks
(PICS) for MicroTech III Applied Air Handling Unit
Controller
and Self-Contained Units with MicroTech III Controls
Limited Warranty
Consult your local McQuay Representative for warranty details. Refer to Form 933-43285Y. To find your
local McQuay Representative, go to www.mcquay.com
Notice
Copyright © 2010 McQuay International, Minneapolis MN. All rights reserved throughout the world.
McQuay International reserves the right to change any information contained herein without prior notice. The user
is responsible for determining whether this software is appropriate for his or her application.
® ™ The following are trade names or registered trademarks of their respective companies: BACnet from the
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.; L
Corporation; Windows and Internet Explorer from Microsoft Corporation; Maverick, RoofPak and McQuay from
McQuay International. L
.
ONWORKS from Echelon
www.mcquay.com
www.mcquay.com
www.mcquay.com
IM 1093 3
Introduction
Hazard Identification Messages
!
Dangers indicate a hazardous situation which will result in death or serious injury if not
avoided.
!
WARNING
Warnings indicate potentially hazardous situations, which can result in property damage,
severe personal injury, or death if not avoided.
!
CAUTION
Cautions indicate potentially hazardous situations, which can result in personal injury or
equipment damage if not avoided.
! WARNING
Electric shock hazard. Can cause personal injury or equipment damage.
This equipment must be properly grounded. Connections and service to the MicroTech III Air
Handling Unit Controller must be performed only by personnel knowledgeable in the operation of
the equipment being controlled.
!
CAUTION
Static sensitive components. Can cause equipment damage.
Discharge any static electrical charge by touching the bare metal inside the control panel before
performing any service work. Never unplug cables, circuit board terminal blocks, or power plugs
while power is applied to the panel.
NOTICE
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 will
be required to correct the interference at his or her own expense. McQuay International
disclaims any liability resulting from any interference or for the correction thereof.
DANGER
4 IM 1093
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