McQuay OM 897-1 Maintenance Manual
Wireless Temperature Control
For McQuay “Applied” Packaged Terminal Air Conditioners and Heat Pumps and
Console Water Source Heat Pumps
Operation & Maintenance Manual
OM 897-1
Group: PDAC/PDHP
Part Number: 668111002
Date: August
2009
©2009 McQuay International
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THE MANUFACTURER IS NOT RESPONSIBLE FOR
ANY RADIO OR TV INTERFERENCE CAUSED BY
UNAUTHORIZED MODIFICATIONS TO THIS
EQUIPMENT. SUCH MODIFICATIONS COULD VOID
THE USER’S AUTHORITY TO OPERATE THE
EQUIPMENT.
THIS EQUIPMENT COMPLIES WITH PART 15 OF THE
FCC RULES. OPERATION IS SUBJECT TO THE
FOLLOWING TWO CONDITIONS: (1) THIS DEVICE
MAY NOT CAUSE HARMFUL INTERFERENCE, AND
(2) THIS DEVICE MUST ACCEPT ANY
INTERFERENCE RECEIVED, INCLUDING
INTERFERENCE THAT MAY CAUSE UNDESIRED
OPERATION.
THE ORIGINAL EQUIPMENT MANUFACTURER
(OEM) MUST ENSURE THAT FCC LABELING
REQUIREMENTS ARE MET. THIS INCLUDES A
CLEARLY VISIBLE LABEL ON THE OUTSIDE OF THE
FINAL PRODUCT ENCLOSURE THAT DISPLAYS THE
FOLLOWING:
CONTAINS FCC ID: TGD12400/IC: 6120A-12400
OM 897 / Page 3 of 20
Contents
Introduction ..............................................................4
Batteries
Installing/Changing .............................................4
Replacing ............................................................4
Mounting
Wall Mount ..........................................................5
Back Stand ..........................................................6
Buttons .....................................................................6
Back Light ................................................................7
Setting the Clock .....................................................7
Thermostat
Programming ...................................................7-9
Navigating ...........................................................9
Exiting the Program Mode ..................................9
Run Button ...............................................................9
Program/Manual Operation ............................9-10
Changing
Temperature .........................................10
While Running a Program .................................10
Installing and Removing Nodes
Installing Nodes ...........................................10-13
Installing Multiple Nodes ................................... 14
Uninstalling Nodes ............................................ 14
Thermostat Installation Reset .........................14-15
Frequently Asked Questions ...........................15-17
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AA size, 1.5-volt alkaline batteries. If the batteries become
completely depleted, the heating/cooling system will go to
the “Off” state.
Figure 1. T9000 Front View
Replacing Batteries
To open the thermostat, use both hands and press the two
push-tabs on the bottom of the thermostat housing with your
thumbs while pulling the front of the thermostat away from
the base (Figure 2)
Introduction
The T9000 Wireless Temperature Control is a two-part
wireless thermostat system designed to provide precision
temperature control without the installation labor and expense
of wiring. Powered by AA batteries, the thermostat can operate
continuously for approximately 18 months, and can be mounted
in any suitable location that will provide good temperature
control. A large LCD display (Figure 1) provides the user
with current room temperature, set point temperature, time,
program interval, and other system status information. In hotel
applications, programming, clock set up buttons and associated
display information are typically not displayed. The second part
of the T9000 system is called a Remote Control Node or “RCN”.
An RCN interfaces with specic desired HVAC equipment,
and communicates with its thermostat using unlicensed 900
MHz, radio frequency energy. At the time of installation, the
T9000 thermostat is linked to one or more RCN controls. The
thermostat and RCN that have been linked will not interfere
with, or be affected by, any other thermostat or RCN in adjacent
rooms, apartments, or neighboring homes.
Batteries
Installing/Changing
A low battery icon will light on the thermostat
display when the batteries are within approximately one week
of being exhausted. The T9000 is designed to use standard
OM 897 / Page 5 of 20
Figure 2. Opening Thermostat
The T9000 operates with either two or four AA batteries. Four
(4) batteries double the time between battery changes (the
average user can expect 1 to 1.5 years of battery life). Batteries
are paired, one set on top of the other (see Figure 3).
Figure 3. Battery Location
Note: Do not mix old and new batteries. When batteries are
changed, replace them all at the same time
Programmed data for heating, cooling and time of day will be
lost when batteries are completely removed or depleted and will
have to be re-enterend along with resetting the clock. To avoid
this, batteries can be replaced one set at a time before they are
depleted. However, after the rst set is replaced, immediately
replace the second set with new batteries.
Mounting
Find a suitable location for mounting your thermostat, preferably
an interior wall centrally located within the conditioned space
at about 5 feet above the oor. Try not to locate the thermostat
in a place where it could be exposed to heat such as a warm air
vent, or where it could be exposed to direct sunlight.
Wall-Mount
The T9000 back mounting plate provides six (6) mounting
holes. The upper and lower holes on the vertical centerline
will match up with screw positions of a standard electrical
switchbox or dry-wall mounting ring.
Step One
Remove the back plate from the thermostat housing (Figure 2)
and use it to mark locations for mounting holes. While operation
of the thermostat is not affected by orientation, we recommend
Base Plate
Front Cover
Latches
Circuit Board
Set A
Set A
Set B
Set B
Thermostat opened back
Thermostat will operate on
either Set A, Set B or both.
When changing, replace with
all new batteries. Never use a
mix of old and new.
Battery orientation is crtitical.
Thermostat open back
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Figure 5. General Operation Display
Note that the UP, DOWN and HEAT/COOL buttons are also
used in setting the clock and programming the thermostat,
and linking to nodes. This will be covered in the following
sections of the manual.
Four buttons located on the left side of the thermostat (refer
to Figure 1 & 12) control display of temperature in either
Fahrenheit or Celsius, programming, clock setup and control of
whether the thermostat is under manual or program control.
• F / C – Toggles Fahrenheit Celsius display
• Program set up button
• Run – Sets program or manual mode of operation
• Clock set up button
using a level across the top or side of the base plate to provide
a professionally installed appearance.
Step Two
Drill 3/8" holes and insert drywall fasteners (#6 screws
recommended) and fasten the back plate to the wall.
Back Stand
Located on the back of the housing is a built-in, hinged stand
support. This feature permits the thermostat to stand on a at
surface, such as a table or shelf, in the event that a permanent
mounting to the wall is not desired.
Buttons
Four buttons are located on the front of the T9000.
Figure 4.
These buttons are used in adjusting fan operation, changing the
set point temperature up or down, and changing the operating
mode of the thermostat. See Figure 1 & 12 for front view
of the thermostat and button locations. Figure 4 shows the
display items that are changed by these four buttons in normal
operation.
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