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Installation Instructions
Step 2 - Mounting the Unit (Cont.)
I.
DIP Switch Settings
The DIP switch bank on the PCB need to be checked. Need
to make sure all switches are in the correct position including
a field-supplied external static pressure setting per the table
below.
SW3_1 Special fresh
[1]
Air (Canada
particular Area)
SW3_2 Reserved
[2]
SW3_3 Auxiliary
[3]
heater
SW3_4 Slim duct or
[4]
MESP DUCT
[5]
OFF OFF
OFF OFF
OFF OFF
OFF OFF
SW3_5
IDU address
OFF ON
SW3_6
for wired
OFF ON
SW3_7
controller
OFF ON
SW3_8
group
OFF ON
Control
ON
application
ON
ON
ON
ON
ON
ON
ON
[1]
OFF OFF
ON
SW1_1
OFF ON
SW1_2
Capacity
ON
SW1_3
OFF OFF
ON
OFF ON
ON
SW1_4 Room card
OFF
ON
SW1_5 Heat pump /
OFF
Cool only
ON
SW1_6 Fresh air/E.A.O OFF
ON
SW1_7 Filter change
OFF
notice / IDU fan
behavior when
cooling set
ON
temp reached
SW1_8 North America/
OFF
NON- North
America
ON
31-5000493 Rev. 4
ON
Special Fresh
Factory default
Air function
setting: OFF
valid
OFF
Special fresh
Air funtion
invalid
ON
Reserved
Factory default
OFF
Reserved
setting: OFF
ON
Auxiliary
Factory default
heater
setting: OFF
Function valid
OFF
Auxiliary
heater
Function
invalid
ON
MESP DUCT
Factory default
(10 ESP level)
setting: According
to model
OFF
Slim DUCT (10
ESP level)
[6]
[7]
[8]
IDU Address
OFF
OFF
0# (main)
(Factory default
setting)
OFF
ON
1# (subordinate)
ON
OFF
2# (subordinate)
ON
ON
3# (subordinate)
OFF
OFF
4# (subordinate)
OFF
ON
5# (subordinate)
ON
OFF
6# (subordinate)
ON
ON
7# (subordinate)
OFF
OFF
OFF
8# (subordinate)
OFF
OFF
ON
9# (subordinate)
OFF
ON
OFF
10# (subordinate)
OFF
ON
ON
11# (subordinate)
ON
OFF
OFF
12# (subordinate)
ON
OFF
ON
13# (subordinate)
ON
ON
OFF
14# (subordinate)
ON
ON
ON
15# (subordinate)
[2]
[3]
Capacity
OFF
9000BTU/h
OFF
OFF
12000BTU/h
OFF
18000BTU/h
ON
OFF
24000BTU/h
ON
30000BTU/h
OFF
ON
36000BTU/h
ON
42000BTU/h
ON
ON
48000BTU/h
Room card invalid (factory
default)
Room card valid
Heat pump (factory
default)
Cool only
Fresh air valid (factory
default)
External alarm output valid
No Filter change notice /
fan stop when set temp
reached (factory default)
Filter change notice / fan
stays on when set temp
reached
North America area (USA
& Canada) (factory default)
NON-North America
Step 3 - Electrical Connections
Electrical Connections Indoor and Outdoor
Units
14/4 non-shielded stranded copper cable only.
Maintain 10 feet of distance from TV, radio or any
communication wiring.
NOTE: If cable connecting Indoor & Outdoor unit >
180ft (55m), the Indoor unit ground wire should be
separated from the cable.
NOTE: See the Wired Controller Operation and
Installation Manual for more information.
MESP DUCT
central controller
A
B
L1 L2
C1C2
1 2 3
POWER SUPPLY
208/230V 60Hz
1 2 3
Step 4 - Leak Testing, Evacuation
and Wifi
Refer to the outdoor section Installation
Manual for the recommended procedure.
Wifi Pairing
1. Download the "SmartHQ" app from Google Play
(Android) or the Apple app store (IOS).
After downloading the App:
2. Open the app.
3. Select "Sign In".
4. Sign into your account or register
as a new user.
5. Select the "+" icon to add a new
device and follow the directions in
the app.
Outdoor unit
terminal blocks
Indoor unit
terminal block
11
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