Lennox V0STAT54P-2 Installation instructions

1
Electrostatic discharge can aff ect
electronic components. Take precau-
tions to neutralize electrostatic charge
by touching your hand and tools to
metal prior to handling the control.
Frequent changes to operating mode
may cause system malfunction.
Allow at least one minute between
mode changes to allow the system to
stabilize.
©2018 Lennox Industries Inc.
Dallas, Texas, USA
INSTALLATION/
OPERATION
INSTRUCTIONS
CONTROLS
507596-06
05/2018
THIS MANUAL MUST BE LEFT WITH
THE OWNER FOR FUTURE REFER-
ENCE
WARNING
Improper installation, adjustment,
alteration, service or maintenance
can cause property damage,
personal injury or loss of life.
Installation and service must be
performed by a licensed professional
HVAC installer (or equivalent) or
service agency.
!
V0STAT54P-2 Indoor Unit
Non-programmable
Controller
©
2
0
1
8
Lennox Industries Inc.
IMPORTANT
!
IMPORTANT
!

2
Shipping and Packing List
Package 1 of 1 contains;
1 – Wired Controller
1 – Installation and operation manual
2 – Plastic spacers
General
The V0STAT54P-2 is a wired non-pro-
grammable local controller that controls
up to 16 VRF indoor units. These instruc-
tions are intended as a general guide and
do not supersede local codes in any way.
Consult authorities having jurisdiction be-
fore installation.
Requirements
• Four-conductor cable is required for
installation.
• Be sure that power supply has been
turned off before beginning installation.
• This controller should be used only as
described in this manual.
• Do not install the controller on outside
walls (where there is unconditioned
space on opposite side of wall) or in
locations where direct sunlight may be
present.
Power wiring between controller and
fi rst indoor unit:
• Minimum 18 AWG stranded shielded
cable up to 164 feet (50 m).
Installation
Clean controller using a clean,
damp cloth. Do not spray cleanser
on or around controller.
Do not install controller in areas
where harmful gases containing
sulfur or other damaging agents
may exist or the controller may be
damaged.
CAUTION
!
• Ensure there are no gaps between
the controller back cover and the
mounting surface.
• Fill any holes in the wall behind the
controller to avoid false readings from
infi ltration.
• Ground the shielded control wiring.
• Do not use a megger to test insulation.
Communication wiring between indoor
units:
• Minimum 18 AWG stranded shielded
cable.
CAUTION
!

3
Read all of the information in this man-
ual before using this controller. All wiring
must conform to local and national build-
ing and electrical codes and ordinances.
This is a 12 VDC controller. Do not in-
stall on voltages higher than 12 VDC.
Do not operate controller with wet
hands.
• This manual provides the installation
instructions for this controller. Refer to
the included wiring diagrams to con-
nect the controller to the indoor unit.
• The controller uses low voltage. Keep
a minimum distance of 12” (305 mm)
between low voltage control wire and
high voltage power wires.
Figure 1. Remove Controller from Back Cover
1. Remove the controller from the back
cover using a fl at head screw driver as
shown. See Figure 1.
Return air (T1) sensor.
Do not insert screw
driver.
Use these slots
to remove the
back cover.
CAUTION
!
IMPORTANT
!

4
Figure 2. Installation
2. Attach the back cover using fi eld-provided screws.
3. At the controller, wire the fi eld-provided 4-conductor shielded cable to X / Y / GND (E)
/ 12V terminal of the controller. See Figure 3.
1. Adjust the length of the two plastic spacers as needed to allow the controller to be
mounted fl ush with the wall. NOTE – Be sure to provide for future maintenance by
allowing enough slack in the wiring to allow the controller to be removed from the wall
if needed. See Figure 2.
Figure 3. Connection at Controller
4-conductor wiring

5
Figure 4. Wire to One Indoor Unit
4. Reattach the controller to the back cover.
5. Connect the controller to one or more indoor units, up to 16. Use 4-conductor shield-
ed cable to connect to the fi rst indoor unit. NOTE - Wiring is polarity sensitive. See
Figure 4.
GND
(E) 12V
X
Y12V X YE
NOTE - 1. Connect up to 16 indoor units
2. Ground cable shielding at indoor unit
3. Connect terminal “GND/(E)” on the controller to terminal “E” on the indoor unit
CAUTION
Connect “12V” on the controller to
terminal “12V” on the fi rst indoor unit
only. 12V connection provides power
to controller; connection to multiple
indoor units will damage controller and
indoor unit boards.

6
Specifi cations
Input voltage 12 VDC
Ambient temperature 23~110°F (-5~43°C)
Ambient humidity RH40%~RH90%
Table 1. Specifi cations
Figure 5. Wire Multiple Indoor Units
12V XYE12V XYE12V XYE
GND
(E) 12V
X
Y
NOTES - 1. Connect “R/12V” on the controller to terminal “12V” on the first indoor
unit only. 12V connection provides power to controller; connection to
multiple indoor units will damage controller and indoor unit boards.
2. Connect terminal “GND (E)” on the controller to terminal “E” on the
indoor unit.
3. Ground cable shielding at one end of each length of cable, except at
controller.
4. Use stranded, shielded, 18 GA cable.
5. Connect up to 16 indoor units.
1. Daisy chain 3-conductor control wiring to each additional indoor unit using the X Y E
terminals in the electrical control box of the indoor unit. Do not daisy chain 12V power
cable. See Figure 5. NOTE - Wiring is polarity sensitive.

7
Description of Buttons
Power
Button
Fan
Speed
Button
Up-Arrow
Button
Mode
Button
Cooling
Mode
Heating
Mode
Auto
Mode
Dry
Mode
Fan
Mode
Locked
Function
Centralized
Controller
Locked
Cooling
Setpoint
Heating
Setpoint
Down-Arrow
Button
Room
Temperature
Swing
Fan Speed

8
Operation
After powering on the controller, wait 30 seconds for initialization The indoor unit cannot
be controlled by the controller until initialization is complete.
Start/Stop Operation
Press the power button.
• Controller ON: LED display lit.
• Controller OFF: LED display not lit.
Set Operation Mode
Press the Mode button to scroll through the mode selections.
• Cool – System operates in cooling mode.
• Heat – System operates in heating mode.
• Auto -- System operates in auto mode.
• Dry -- System operates in dehumidifi cation mode. NOTE - fan speed cannot be ad-
justed during dry mode.
• Fan – Fan only, no heating or cooling.
To set (or change) the room temperature setting (setpoint)
Press the up-arrow & down-arrow buttons to adjust the setpoint.
When in Auto mode, separate heating and cooling setpoints can be set. Press the Mode
button to switch between heating and cooling setpoints.
NOTE - Indoor units connected to a local controller may also be controlled by a central-
ized controller. Indoor units respond to the last command sent. It is recommended that
indoor units be controlled from a single source of control, either local controller or central-
ized controller but not both, to avoid conflicts in commands.

9
MODEFAN SPEED
FAN SPEED
COOL
HEAT
ROOM TEMP.
Figure 6. Function Lock Indicator
Function Lock
Indicator
Louver Swing Operation
Press both the up-arrow button and the down-arrow button simultaneously to start louver
auto swing operation. The louvers will move automatically until stopped.
Press both the up-arrow button and the down-arrow button simultaneously again
to stop the swing operation. The louvers will remain in position where stopped.
Do not move louvers manually; only move louvers using the auto swing function.
NOTE - Not available on all indoor unit types.
Lock Operation
Some operational functions can be locked. See Table 2

10
Lock Type
Operation
Simultaneously press the buttons
shown below
User Experience
Lock
operation
mode
The Mode button is inactive. User
cannot change operation mode
using this controller.
Lock fan
speed
The fan speed button is inactive.
User cannot change fan speed
using this controller.
Lock
temperature
increase
The Up-arrow button is inactive.
User cannot raise setpoint using
this controller.
Lock
temperature
decrease
The Down-arrow button is inac-
tive. User cannot lower setpoint
using this controller.
Lock ON/
OFF status
The Power button is inactive User
cannot turn the indoor unit on or
off using this controller.
Lock all
buttons
All buttons are inactive. User
cannot make any changes to the
indoor unit using this controller.
Unlock all
buttons
All buttons are active. User can
make any changes to the indoor
unit using this controller.
Table 2. Lock Operation Functions

11
Controller Settings
• Press and hold the Fan speed button and the Mode button for 5 seconds to access
the controller settings.
• Use Table 3 to setup the controller.
• When in Settings mode:
• Press the Fan speed button to accept the current setting parameters and proceed
to the next setting.
• Press the Up-arrow and Down-arrow buttons to adjust parameters.
• Press the Power button to restart controller.
Centralized Controller Locks Controller
If a function of the indoor unit is locked by a centralized controller (e.g. mode, tempera-
ture setpoint, swing, etc.), the V0STAT54P-2 controller will not be able to adjust that
locked function.
The function must be unlocked at the centralized controller before the local controller
can operate it.
MODEFAN SPEED
Figure 7. Controller Settings
Settings
Code
Settings Number
(see Table 3)
Settings
Parameter

12
Table 3. Controller Settings
Code Function
Set-
tings
No.
Value Note
EE
Power off
– Memory
settings for
Auto Mode
NOTE – When
Auto mode is
being used,
setpoint, fan
speed, and
operation
mode (cooling
or heating) is
memorized
by the indoor
unit.
10 on (default)
When Auto mode is being
used, the controller will
memorize the user setting
of Auto mode before
powering off. When power
is restored, the controller
mode will be set to Auto
mode.
11 off
When Auto mode is being
used, the controller will
not memorize the user
setting of Auto mode
before powering off.
When power is restored,
the controller mode will be
set to the operation mode
of indoor unit (cooling or
heating).
CF Temperature
unit (see note)
20 °C The controller will use °C
21 °F (default) The controller will use °F
Gr Not used 40 Not used Not used

13
Code Function
Set-
tings
No.
Value Note
Fr
Room
temperature
sensor location
50 0 Use indoor unit sensor
51 1 (default)
Use controller sensor
NOTE - Required setting
if multiple indoor units
are connected to the
controller.
t1
Room
temperature
sensor cali-
bration
60
Fahrenheit:-4°F/
-3°F/ -2°F/ -1°F/ 0°F
(Default)/ 1°F/ 2°F/
3°F/ 4°F
Celsius: -2°C/ -1°C/
0°C (Default)/ 1°C/
2°C
Adjust the calibration of
the room temperature se-
nor. Value selected will be
added to the temperature
sensor value.
Au Auto mode
enable/disable
70 on (default) Auto mode enable (heat
recovery systems only)
71 off Auto mode disable (heat
pump systems)
Th
Setpoint upper
limitation for
heating mode
80
Fahrenheit:
86°F~62°F (86°F
default)
Celsius: 30°C~17°C
(30°C default)
When the system is in
heating mode, users can
not set the temperature
higher than the set value.

14
Code Function
Set-
tings
No.
Value Note
Tl
Setpoint lower
limitation for
cooling mode
90
Fahrenheit:
62°F~86°F (62°F
default)
Celsius: 17°C~30°C
(17°C default)
In cooling mode, users
cannot set the tempera-
ture lower than the set
value.
FC
Set indoor unit
fan ON/OFF
when cooling
requirement is
satisfi ed.
A0 on (default)
Keeps the indoor fan on
when cooling setpoint is
satisfi ed.
A1 off
Turns the indoor fan off
when cooling setpoint is
satisfi ed.
FH
Set indoor unit
fan ON/OFF
when heating
requirement is
satisfi ed.
b0 on (default)
Keeps the indoor fan on
when heating setpoint is
satisfi ed.
b1 --
Turns the indoor fan off
when heating setpoint is
satisfi ed.
NOTE - FH code only. Simultaneously press the Fan Speed, Down-Arrow, Up-Arrow
and Mode buttons to toggle between “on” and “--”.

15
Code Function
Set-
tings
No.
Value Note
dr
HHE Relay
Kit - Enable
or Disable
Alternative
Heat (note:
see setting L0,
code d5 for
Alternate Heat
settings)
C0 on Enable Alternative Heat
using the HHE Relay Kit.
C1 off (default) Disable Alternative Heat
using the HHE Relay Kit.
d1
HHE Relay Kit
- Auxiliary Heat
Settings
d3 3°F/2°C (default)
When using the HHE
relay kit, auxiliary heat will
be activated when room
temperature is 3°F/2°C
lower than setpoint in
heating mode.
d5 5°F/3°C
When using the HHE
relay kit, auxiliary heat will
be activated when room
temperature is 5°F/3°C
lower than setpoint in
heating mode.

16
Code Function Settings
No.
Value Note
d5
HHE Relay Kit -
Alternative Heat
Settings (note: see
setting CX, code dr
for to set Alterna-
tive heat to Enable/
Disable). When
alternative heat
is enabled and
outdoor ambient
temperature is low-
er than the setting,
The alternate heat
source is the only
heat source for
heating, the VRF
system will stop
supplying heat until
ambient tempera-
ture is higher than
the setting.
L0
0 7°F/-14°C
1 (default) 10°F/-12°C
2 15°F/-9°C
3 20°F/-7°C
4 25°F/-4°C
5 30°F/-1°C
6 35°F/-2°C
7 40°F/4°C
8 45°F/7°C
9 50°F/10°C
10 55°F/13°C
11 60°F/16°C
12 65°F/18°C
13 70°F/21°C
14 72°F/22°C
NOTE - The indoor unit temperature unit display must be set at the same time as the controller. Indoor
units default to display temperatures in °F. To change the indoor unit temperature unit display, press and
hold the Manual button on the unit receiver¹ for 5 to 15 seconds until the display changes to show the
desired temperature unit.
¹ For VWM*024 and larger wall-mounted indoor units only, the button is located on the unit’s main control
board and labeled SW3.

17
Indoor Unit Status Query
• Press and hold the Mode button for 5 seconds to access the indoor unit status query.
• Use the up-arrow and down-arrow buttons to scroll through the indoor unit statuses
• Indoor unit operation status (Figure 8)
• Indoor unit evaporator coil temperature (T2 and T2b) (Figure 9)
• Room temperature sensor location (wired controller or indoor unit) (Figure 10)
• On/Off status of dry contact one (Fan) (Figure 11)
• On/Off status of dry contact two (CTON) (Figure 12)
• On/Off status of dry contact three (HTON)(Figure 13)
• On/Off status of dry contact four (AUXH) (Figure 14)
FAN SPEED
COOL
SWING
Figure 8. Indoor Unit Operation Status
Setpoint
Operation Mode
Fan Speed
Indoor Unit Address
Figure 9. Indoor Unit Coil Temperature
T2b
T2
Indoor Unit Address
Louver
Auto-Swing

18
Figure 10. Room Temp Sensor
Location
Room Temp Sensor Location
0 = Indoor Unit
1 = Controller
Indoor Unit Address
Figure 11. On/Off Status of HHE Relay - Fan
Figure 12. On/Off Status of HHE Relay - CTON
Figure 13. On/Off Status of HHE Relay - HTON
Not used
HHE Relay Four-Dry Contact - Fan
Dry Contact Status
on = Dry contact closed
-- = Dry contact open
HHE Relay Four-Dry Contact - CTON
Dry Contact Status
on = Dry contact closed
-- = Dry contact open
HHE Relay Four-Dry Contact - HTON
Dry Contact Status
on = Dry contact closed
-- = Dry contact open

19
Figure 14. On/Off Status of HHE Relay Kit -
AUXH Figure 15. Switch to Next Indoor Unit
MODEFAN SPEED
FAN SPEED
COOL
Connected to Multiple Indoor Units
Press the Fan speed button to switch to additional indoor units. The controller will display
operation mode, fan speed, temperature setting, swing status and address of indoor unit.
HHE Relay Kit Four-Dry Contact - AUXH
Dry Contact Status
on = Dry contact closed
-- = Dry contact open

20
Fault Code Query
Figure 16. Enter Fault Code Query
MODEFAN SPEED
Figure 17. View Past 10 Fault Codes
MODEFAN SPEED
Figure 18. Switch Between Fault Codes
MODEFAN SPEED
• Press and hold the Mode button for 5
seconds to access the indoor unit sta-
tus query.
• Press the Mode button to access the
fault code query. The last 10 fault
codes are stored.
• Press the Fan Speed button to scroll
through the fault codes.
• When multiple fault codes have oc-
curred at the same time, use the up-ar-
row and down-arrow buttons to see
each code.