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Operations Manual
OM 1039-1
Group: Controls
Part Number: OM 1039-1
Date: January 2011
Supersedes: OM 1039, dated 03/10
Room Sensor for BACnet
Model(s): 2508032
®
VAV Actuator Operation Manual
© 2010 McQuay International
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Table of Contents
Table of Contents.................................................................................................................. 2
Revision History....................................................................................................................................3
Reference Documents............................................................................................................................3
Limited Warranty ..................................................................................................................................3
General Information.............................................................................................................. 4
Hazard Identification Messages.............................................................................................................4
Overview ................................................................................................................................ 5
Operation ............................................................................................................................... 6
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Revision History
IM 1039 March 2010 Initial release
IM 1039-1 January 2011 Clarified BACnet VAV Actuator as the VAV box controller
Reference Documents
Number Company Title Source
IM 1040 McQuay Start-up procedures for the BACnet VAV actuator www.mcquay.com
IM 1093
McQuay
Single Duct VAV Terminal Box installation manual
www.mcquay.com
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 tradenames or registered trademarks of their respective companies: BACnet from the
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.; Windows from Microsoft
Corporation; D-Net, McQuay and MicroTech III from McQuay International.
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General Information
This manual contains the information you need to properly configure and operate the Room Temperature Sensor for the
BACnet VAV Actuator, and corresponding VAV system.
Hazard Identification Messages
!
DANGER
Dangers indicate a hazardous situation that 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 VAV
Actuator Room Sensor 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.
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Overview
This document relates to the set up and operation of the McQuay 2508032 Room Temperature Sensor. It
explains the various operating modes available and describes procedure for programming the display,
according to user preferences.
Accessories
Description Product Number
25-foot (7.6 m) cable with
connections
50-foot (15.2 m) cable with
connections
100-foot (30.5 m) cable with
connections
Replacement Housing Base
Passkey
2508041
2508042
2508043
2508044
2508045
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Operation
Operation modes
Normal
Occupied Mode
Unoccupied Mode
View/Change
Set Point
Occupancy
Override
Mode Passkey
SEN0483R1
User Settings
Laptop
Figure 1. Operation Modes.
Normal Mode
In Normal M
time cycle.
The display shows temperature in the desired units (as set by the jumper on the PCA). Depending on the model, the
humidity will be displayed as well. When both of these variables need to be displayed (temperature
display will cycle thro
ode, the display is updated with temperature, humidity, and occupied status (all where applicable) on a set
, relative humidity) the
ugh the required values at a rate of one change every three to five seconds.
Occupied Mode
If the BACnet VAV Actuator is currently in Unoccupied Mode (display shows man outside of the house), pressing the
override button (button designated by an image of a man inside a house) results in the display showing the word
OCCUPIED and the request is sent to the actuator to override the unoccupied mode. If the BACnet VAV Actuator does no
get overridde
n, and stay
s in unoccupied mode, the display on the sensor reverts back to the unoccupied symbol as soon
as possible.
If the BACnet VAV Actuator is currently in occupied mode, pressing the override button flashes the word OCCUPI
d
oes nothing else. This functionality is intended solely to let the user know that the button press was recognized.
ED, and
Occupied Mode Unoccupied Mode
t
Setpoint Adjustment Mode
The temperature setpoint is adjusted by using
on the display in 1.0°F or 0.5°C increments.
The setpoint adjustment will be displayed, and will stay on the screen for three seconds. If, during those three seconds
setpoint button is pressed again, the setpoint will be adjusted accordingly and be displayed, and the three-second
countdown will restart. If there is no user input for more than three seconds, the room unit will return to Normal Mode.
the plus and minus buttons. The resulting changes in setpoint are displayed
, a
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Passkey
Insert the passkey in the sensor HMI (Human-Machine Interface)
Mode
port to setup all of the user functionality listed below. For
each parameter, use the following sequence:
Press the occupancy override button to edit the parameter.
Press the plus/minus buttons to scroll through the various options available for each parameter to display
the desired
option.
Press the occupancy override button again to move to the next user adjustable parameter.
When finished, remove the passkey from the HMI port. User setting changes will be saved when the passkey is
removed.
HMI PORT
PASSKEY
SEN0481R1
Figure 2. Inserting the Passkey.
Settings
Set Pt Disp. - determines how the user views the temperature setpoint adjustment. The default setting is NUMERIC,
displayed in degrees. The user selects between a NUMERIC and a GRAPHIC setpoint display.
Set Pt Min - determines the minimum temperature setpoint value. The default setting is 55°F or 12.5°C. The user
selects the minimum setpoint the room unit should request. T
the setpoint is displayed graphically as a sliding bar, this sets the left end of the slider bar. The limits are 55°F to the
Set Pt Max value. The adjustment step size is 1°F or 0.5°C.
Set Pt Max - determines the maximum temperature setpoint value. The default setting is 95°F or 35°C. The user
selects the maximum setpoint the sensor should
request. The setpoint limit is ultimately defined in the controller. If the
setpoint is displayed graphically as a sliding bar, this sets the right end of the slider bar. The limits are Set Pt Min to
95°F. The adjustment step size is 1°F or 0.5°C.
Disp. Temp? - determines whether the temperature value should be displayed. The default value is YES.
Disp. RH? - determines whether
the humidity value should be displayed. The default value is YES, if the device is a
humidity room unit. (This option is conditional based on the presence of humidity measurement capability, and only
offered with QFA3x80.F types.)
isp. Occ? - determines whether the occupancy status should be displayed. The default value is YES if the device
D
offers occupancy override capability.
NOTE: this does not enable/disable the Occupancy override button functionality, just the display of the occupancy
status.
T Cal - allows the user to field calibrate the temperature display and output through a bias adjustment. The default
value is + 0°F. Adjustments may be made between -5°F and + 5°F, in 0.5°F increments.
he setpoint limit is ultimately defined in the controller. If
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RH Cal - allows the user to field calibrate the humidity display and output through a bias adjustment. The default value
0%. Adjustments may be made between 5% and + 5%, in 0.5% increments
is +
Brightness - allows the user to adjust the display brightness. Allowable values are 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10,
with 1 being dimmest and 10 being brightest. The default setting is 5.
Scr. Saver - allows the u
and FADING. The default value is NONE. If set to NONE, the display operates at the programmed brightness level
without any interruption.
OFF – The display will turn off after 30 seconds. Any button press will wake it up (without doing anything else), and
then the device will operate in Normal Mode for 30 seconds until the display turns off again.
FADING – Within 30 second
display will operate at this brightness until the user presses a button. At that time, the programmed display
brightness will be restored.
Factory Defaults - allows the user to reset all parameters to factory defaults. Available options for this parameter
are YES and NO.
ser to activate or deactivate the display screen saver. Available options are: NONE, OFF,
s of no operator interaction, the entire display will fade to a display brightness of 1. The
Laptop Pass-thru Mode
TM
To communicate with the BACnet VAV Actuator using Datamate Base, Datamate Advanced, or Microsoft Windows
Controller Interface Softw
port at the bottom of the room unit. This puts the room unit in laptop mode, which deactivates all buttons and sh
LAPTOP on the
m
easured values to the controller while in this mode. The room unit returns to Normal Mode once the cable is
disconnected.
display. In this mode, the controller communicates only with the laptop. The room unit does not update
are (WCIS), connect a PC-compatible cable (see Accessories) from a laptop to the sensor HMI
ows
Error Messages
Message Meaning
NO TEC
NO
SENSOR
00x
No communication with BACnet VA
Actuator. This error will be displayed
the lower right (icon) section of the
display, and the upper portion of th
display should continue to display
temperature and humidity values.
NOTE: This error will appear whenever
BACnet VAV Actuator subpoints
available or the actuator (or its subp
are not responding to commands.
No temperature or humidity sensor
detected on the PCA. This error will be
displayed until the error is corrected. This
message might also display if the w
controller-to-room unit-cable is us
the replacement sensor element is
incorrectly installed on the PCA.
Room unit firmware revision. This is
visible upon power-up for a f
ew seconds
until communication is established with
the BACnet VAV Actuator.
V
on
e
are not
oints)
rong
ed or if
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Set-up of Displayed Temperature Units
The factory default for displayed temperature units is °F. To change the display to °C mode, snip the wire jumper on the
back of the PCB (the visible side when the unit is taken off the wall).
F
SEN0480R1
Figure 3. Jumper Location.
C
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This document contains the most current product information as of this printing. For the most current
product information, please go to www.mcquay.com. All McQuay equipment is sold pursuant to
McQuay’s Standard Terms and Conditions of Sale and Limited Warranty.
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