Lennox M0STAT64Q-2 Montageanleitung
1
INSTALLATION/
OPERATION
INSTRUCTIONS
CONTROLS
507644-03 10/2021
Supersedes 507644-02
This manual must be left with the
owner for future reference.
M0STAT64Q-2 Indoor Unit
Programmable Controller
(22U20)
©2021 Lennox Industries Inc.
Dallas, Texas, USA
IMPORTANT
Frequent changes to operating mode may
cause system malfunction. Allow at least
one minute between mode changes to
allow the system to stabilize.
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.
Shipping and Packing List
Package 1 of 1 catalog number 22U20 contains:
1 – Wired Controller
1 – Lithium battery
3 – Screws (mount to wall)
2 – Screws (mount to J-box)
2 – Plastic spacers (J-box)
1 – Connection Cable A with connector for all indoor
units
1 – Connection Cable B with connector for MMDA/B,
MCFA/B, M22A and M33A/B/C indoor units
1 – Connection Cable C with connector for MWMA/B
indoor units
1 – Connection Cable D for MWMC indoor unit
1 – Installation and operation manual
Specications
Input voltage 5 VDC
Ambient temperature 23~110°F (-5~43°C)
Ambient humidity RH40%~RH90%
2
General
The M0STAT64Q is a wired programmable local
controller for mini-split indoor units with conve-
nient timed schedules for daily operation. These
instructions are intended as a general guide and
do not supersede local codes in any way. Con-
sult authorities having jurisdiction before instal-
lation.
Requirements
Be sure that power supply has been turned off
before beginning installation. This controller
should be used only as described in this man-
ual. 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.
Wiring Connections
Dimensions
123mm
(4.8”)
120mm
(4.7”) 18.5mm
(0.7”)
83.5mm
(3.3”)
46mm
(1.8”)
62mm
(2.4”)
Figure 1. M0STAT64Q Dimensions
WARNING
Be sure that power supply has been turned
off before beginning installation.
CAUTION
Clean controller using a clean, damp
cloth. Do not spray cleanser on or around
controller.
WARNING
Do not operate controller with wet hands.
CAUTION
Do not install controller in areas where
heavy oil, vapor, or gases containing
sulfur may exist or the controller may be
damaged.
3
• This manual provides the installation instruc-
tions for this controller. Refer to the included
wiring diagrams to connect the controller to
the indoor unit.
• The controller uses low voltage. Keep a mini-
mum distance of 12” (305 mm) between low
voltage control wire and high voltage power
wires.
• Ground the shielded control wiring.
1. Use the wiring connections illustrations (Fig-
ures 2 and 6) to connect the controller to the
indoor unit. NOTE - Connection details for
wall-mounted units differ from the other indoor
unit types.
2. Select the cable exit route from the back of
the controller.
3. Include a drip loop in the cable.
IMPORTANT
Read all of the information in this manual be-
fore using this controller. All wiring must con-
form to local and national building and elec-
trical codes and ordinances. This is a 5 VDC
controller. Do not install on voltages higher
than 5 VDC.
IMPORTANT
The provided cables must be used. Do not
use excessive force while pulling the cable or
when making the connections.
• Do not use a megger to test insulation.
• The controller cable length should not exceed
164 ft (50 m).
Indoor unit main board
Receiver board
Cable A
CN40
Cable B
3 ft. 7 in. (1.1m)
4-conductor shielded
wire on the controller
(Gray cable with blue tag for all units
that require the WYE cable.)
Figure 2. Wiring Connections MMDA/B, MCFA/B, M22A and M33A/B/C
4
Figure 3. MMDA/B Main Board
Figure 4. M22A and M33A/B/C Main Board
CN 40
Connect to
controller
CN 40
Connect to
controller
Figure 5. MCFA/B Main Board
CN 40
Connect to
controller
Co nnectthe
ProgrammableWired
Co ntrollertothe factory
installedCN4 portcable
Figure 6. MFMA Main Board
5
Figure 7. Wiring Connections MWMA/B
Figure 8. MWMA/B Receiver Board
CN 403
Connect to
controller
Receiver board
4-conductor shielded wire on the controller
Cable C
CN403
Cable A
NOTE - CN 403 is used to connect either the M0STAT64Q local controller OR a centralized control. It is not possible to connect
both the M0STAT64Q controller and a centralized control to this unit.
Factory-connected to
Display Board
Receiver board Display board
4-core shielding wire on the controller
The connection cable A
CN1
CN40
XYE5V
White
Yellow Brown
Red
The connection cable D
Figure 9. Wiring Connections MWMC
6
MWMC receiver board uses terminals for the
programmable wired controller.
Figure 10. MWMC Receiver board
Wire Controller Cable
Indoor unit main board
CN20
CN1
CN4
Factory installed
Adapter Board
Factory installed
CN4 Adapter Cable
Optional Programmable
Wired Controller
20 Foot Cable provided with
Programmable Wired Controller
Figure 11. Wiring Connections to MFMA
7
4. Seal the cable entrance to the controller cas-
ing and any wall penetrations to prevent water
Figure 12. Select Cable Route
PCB
PCB
PCB
1
1
1
2
3
¹Use snips to notch the
controller casing to allow
the cable to pass through.
from entering the controller.
5. Reattach the controller to the back plate. Be
careful not to pinch or bind the wires.
Figure 13. Prevent Water from Entering
Controller Casing
Sealant Drip
Loop
Drip
Loop
Drip
Loop
Sealant Sealant
Figure 14. Reattach Controller to Back Plate
8
1. Remove the controller from the back plate us-
ing a at-head screwdriver.
2. Mount the back plate as appropriate for your
application.
Figure 15. Remove Back Plate
Slots
Figure 16. Attach Back Plate to Wall
Back plate
Screws (M4×20)
Figure 17. Attach Back Plate to J-box
Switch box
Back plate
Screw (M4×20)
Screws (M4×25)
3. J-box installation - Adjust the length of the two
plastic spacers as needed to allow the control-
ler to be mounted ush with the wall.
NOTE – Be sure to provide for future mainte-
nance by allowing enough slack in the wiring to
allow the controller to be removed from the wall
if needed.
Installation
4. Insert the provided battery into controller,
positive side out. The battery stores the day
and time in case of power outage. Replace
the battery when it’s charge is depleted.
5. Reattach the controller to the back plate. Be
careful not to pinch or bind the wires.
9
Display
Operation
Mode
Fan
Speed
Horizontal and Vertical Swing
(not available for all indoor unit models)
Faceplate
Function
On/Off Timer
Schedule
Follow me
Function Turbo/PTC
°F or °C
¹Tempera-
ture display
Lock
Indication
Room
Temperature
Clock
¹ Displays cooling set point, heating set point
or room temperature
Not
Used
10
Description of Buttons
Power
Decrease
Fan speed
(Lock)
Swing but-
ton (Swing
function not
available for
all indoor unit
models)
Conrm
Timer
Day Off/
Delete
Copy/
Follow me
Mode
Back/Turbo
Swing Timer
Day o/Del
Conrm Back/Turbo
Copy/
Follow me
Mode
Fan speed
(Lock)
-+Increase
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