4
3
2
1
4
3
2
1
G
+
–
4
3
2
1
Installation
1.
Turn OFF power to the QS link.
WARNING: Shock Hazard.
May result in serious injury or death.
Disconnect all power sources before installing or servicing unit.
2.
Install the wallbox / adapter and wires.
a. Sealed wallbox
i. Cut a 2.75 x 2.75 in (70 x 70 mm) hole in the wall at the ideal thermostat
location. See
Mounting
section for more information.
ii. From the rear of the wallbox, firmly push the wires through the sealed
wire gaskets.
iii. Ensure that the arrows are pointing up and insert the wallbox into the hole.
Tighten the mounting screws.
iv. Snap the color trim ring to the sealed wallbox.
b. Metal wallbox (e.g., EBB-1-SQ) – already installed during construction
i. Ensure that a low-profile chase nipple was used and is 0.125 in (3 mm) or
less. If a low-profile chase nipple was not used, replace it with a low-profile
one. To prevent air flow, seal the gaps between the wires.
ii. If the metal wallbox has top or bottom mounting tabs, bend them back
before installing the adapter.
iii. Screw the adapter to the metal wallbox using the two screws provided.
0.125 in (3 mm)
or less
3.
Connect wires
to the terminal blocks (supplied).
Contents
Wallbox options
• For hollow walls that may have air movement in the wall cavity, use the sealed
wallbox included with thermostat.
• For solid masonry or poured concrete walls with no airflow, use a 2.75 in x 2.75 in
(70 mm x 70 mm) metal wallbox (e.g., EBB-1-SQ) with a minimum depth of 1.38 in
(35 mm).
– Single wallbox: Lutron model number EBB-1-SQ
– Pack of 15 wallboxes: Lutron model number EBB-15-SQ
• Bend back the top and bottom tabs on the metal wallbox before installing the
wallbox adapter.
• If running conduit to the wallbox, use a low-profile conduit connector with a
maximum height of 0.125 in (3 mm).
Important Notes
Codes:
All wiring must be installed in accordance with all local and national
electrical codes.
Operating temperature:
32 °F to 104 °F (0 °C to 40 °C), 0% to 90% humidity,
non-condensing. Indoor use only.
Air circulation:
The back of the thermostat that is mounted in the wall should not
be exposed to airflow or drafts, while the front exposed surface is intended to be
mounted in an area that is exposed to air that is representative of the space.
Cleaning:
Clean with a damp cloth. Do NOT spray with water or any chemical
cleaning solutions.
Mounting
• Mount on a clean, dry, interior wall.
• Mount approximately 4 ft to 5 ft (1.2 m to 1.5 m) above the floor. Follow all local
and national codes.
• Mount on a wall without pipes, chimneys, or ducts.
• Mount on a wall with good visibility and control access.
• Do not mount on an exterior wall, close to a window, next to a door, or areas with
drafts.
• Do not mount in direct airflow from supply and return registers / grilles.
• Do not expose to water (e.g., drips or splashes) or mount in a damp area.
• Do not mount within 4 ft (1.2 m) of heating sources (e.g., direct sunlight, light bulbs,
etc.).
• Do not mount in areas with poor circulation (e.g., niches, alcoves, behind curtains,
or behind doors).
• Do not mount within 0.75 in (19 mm) of Palladiom keypads.
Note:
If it is not possible to follow these guidelines, the use of an indoor remote
temperature sensor is recommended. For more details, see the installation
instructions included with the HomeWorks QS Palladiom HVAC controller.
Inside Wall
Outside W
all
4 – 5 ft
(1.2 – 1.5 m)
Lutron Electronics Co., Inc.
7200 Suter Road, Coopersburg, PA 18036-1299 U.S.A.
English
P/N 043484 Rev. B
10/2017
Lutron, HomeWorks, and Palladiom are trademarks of Lutron Electronics Co., Inc., registered in the U.S. and other countries. NEC is a registered trademark of the National Fire Protection Association, Quincy, Massachusetts.
©2017 Lutron Electronics Co., Inc.
Installation Instructions
Please Read Before Installing
Palladiom Thermostat
HQWT-T-HW
24 – 36 V
-
60 mA
IEC SELV / NEC
®
Class 2: 24 – 36 V
-
60 mA
®
User Interface
Adjust Setpoints in Auto Mode (when available)
When in Auto mode, both heat and cool setpoints will be shown.
1. Press
Set
or
Set
and one of the setpoints will start to flash.
a. To adjust the setpoint that is currently flashing, press
Set
or
Set
.
b. To adjust the other setpoint, press
Set
and the other setpoint will start to flash.
Press
Set
or
Set
to adjust the setpoint.
2. After 5 seconds of no activity, the setpoint will save and will stop flashing.
Note:
Switching between operating modes is not possible while a setpoint is flashing.
Note:
By default, the setpoints cannot be less than 3 °F (2 °C) apart. If a setpoint is
adjusted to less than that, the other setpoint will automatically change so that there is at
least 3 °F (2 °C) difference.
Heating mode
1, 2
Auxiliary heat
mode
5
Cooling mode
1, 2
Select system heat,
cool, only aux, auto,
or off
7
Local hold button
9
Schedule on / off
(hold)
6
System off
4
Display backlighting
3
°F / °C indicator
Room temperature
Heat setpoint
8
Auto
Heat On
OFF
Cool On
On
Off
Only
Aux
AUTO
On
Set
Set
Hold
Cool setpoint
8
Lower room setpoint
Raise room setpoint
Fan mode
7
Medium
High
Low
Auto
On
Auto
On
Auto
On
Auto
On
Change fan
mode
1
Icons are animated when system is actively heating / cooling (when using SMC55-RESI).
2
Icons flash if system is temporarily delayed for HVAC equipment protection (when using SMC55-RESI).
3
Turns on when any button is pressed. Turns off after 10 seconds of inactivity (programmable). Dynamic
Backlight Management (DBM) automatically adjusts backlight intensity based on ambient lighting
conditions.
4
Room temperature, “OFF”, and fan mode (when fan is running) are shown when system is off.
5
“Aux” indicates that auxiliary heat is running with the other heat stages. “Only Aux” indicates that auxiliary
heat is running without the other heat stages (emergency heat).
6
Indicates HVAC system timeclock event status.
7
Applicable modes are configurable via the HomeWorks QS software.
8
Display shows the heat or cool setpoint. The first raise/lower button press activates the LCD backlight.
Additional raise/lower button presses adjust the setpoint.
9
Enables / disables HVAC system schedules.
Dynamic Backlight
Management (DBM)
sensor location
HVAC controller communication link*
Data Link
One shielded, twisted pair 18 AWG (1.0 mm
2
)
–:
_
+: MUX
G: Common
IEC SELV / NEC
R
Class 2
One 18 AWG (1.0 mm
2
)
HomeWorks QS
Palladiom thermostat
HomeWorks QS
Palladiom HVAC
controller**
IEC SELV / NEC
R
Class 2
1: Common (Black)
2: V+ (Red)
One or two 18 AWG
(1.0 mm
2
)
Two 12 AWG
(2.5 mm
2
)
QS link
Data Link
One shielded, twisted pair
22 AWG – 18 AWG
(0.25 mm
2
– 1.0 mm
2
)
3: MUX
4:
_
Drain /
Shield
†
OR
* Not applicable for companion thermostats.
** Sold separately. For more information, see the HomeWorks QS Palladiom HVAC Solution spec
submittal at www.lutron.com/TechnicalDocumentLibrary/3691033.pdf
†
Do not connect the drain / shield wire to earth / ground or to the thermostat and do not allow it to
contact the grounded wallbox.
Thermostat
Sealed wallbox and color trim ring
Use sealed wallbox and
trim ring for all applications
except solid masonry or
poured concrete walls.
Adapter and screws for metal wallbox
[metal wallbox (EBB-1-SQ) sold separately]
Use with metal wallbox
in solid masonry or
poured concrete walls.
Removable terminal
blocks
G
+
–
4
3
2
1
Auto
On
4
3
2
1
4
3
2
1
Seal
QS Link Wire Sizes
Length
Wire Gauge
Lutron Cable Part Number
< 500 ft (153 m)
Power (terminals 1 and 2)
1 pair 18 AWG (1.0 mm
2
)
GRX-CBL-346S (non-plenum)
GRX-PCBL-346S (plenum)
Data (terminals 3 and 4)
1 twisted, shielded pair 22 AWG
(0.5 mm
2
)
500 – 2000 ft
(153 – 610 m)
Power (terminals 1 and 2)
1 pair 12 AWG (4.0 mm
2
)
This will not fit in terminal. Connect
as shown above.
GRX-CBL-46L (non-plenum)
GRX-PCBL-46L (plenum)
Data (terminals 3 and 4)
1 twisted, shielded pair 22 AWG
(0.5 mm
2
)
4.
Reattach the terminal blocks
to the thermostat if they were removed during the
wiring process.
5.
Snap the thermostat
into the sealed wallbox or adapter.
6.
Turn ON power to the QS link
. The thermostat display will turn on.
Warranty
www.lutron.com/TechnicalDocumentLibrary/warranty.pdf
www.lutron.com/TechnicalDocumentLibrary/Intl_warranty.pdf
Customer Assistance
www.lutron.com/support
U.S.A. / Canada:
1.844.LUTRON1 (588.7661)
World Headquarters (U.S.A.):
+1.610.282.3800
European Headquarters (United Kingdom):
+44.(0)20.7702.0657
Technical Support: +44.(0)20.7680.4481
FREEPHONE: 0800.282.107
Asian Headquarters (Singapore):
+65.6220.4666
Technical support: 800.120.4491
Other Countries
Mexico: 1.888.235.2910
Central / South America: +1.610.282.6701
France: 0800.90.12.18
Germany: 00800.5887.6635
Italy: 800.979.208
Spain: 900.948.944
Northern China: 10.800.712.1536
Southern China: 10.800.120.1536
Hong Kong: 800.901.849
Singapore: 800.120.4491
Taiwan: 00.801.137.737
Thailand: 001.800.120.665853
Other areas in Asia: +65.6220.4666
