CONfIgURATION DIP SWITCHES
Table 3: MT2300 Main board DIP switch settings
Switch Description
Position
SW1 = OFF (0)
Normal/Test
SW1
Mode
SW1 = ON (1)
SW2 = OFF (0)
Fan
SW2
Operation
SW2 = ON (1)
SW3 = OFF (0)
SW3
Loop Fluid
SW3 = ON (1)
SW4 = OFF (0)
Freeze Fault
SW4
Detect (FFD)
SW4 = ON (1)
SW5 = OFF (0)
Room Sensor
SW5
Setpoint Ad-
just Range
SW5 = ON (1)
Thermostat/
SW6 = OFF (0)
SW6
Room Sensor
SW6 = ON (1)
Control
Single Com-
SW7 = OFF (0)
pressor Heat-
ing Source
SW7 = ON (1)
Single
SW8 = OFF (0)
Compressor
IO Expansion
SW8 = ON (1)
SW7/
Module
SW8
SW7 = OFF (0)
SW8 = OFF (0)
Two
SW7 = ON (1)
Compressor
SW8 = OFF (0)
Availability
SW7 = OFF (0)
SW8 = ON (1)
WSHP Base
SW9 = OFF (0)
SW9
Board Appli-
cation Select
SW9 = ON (1)
Discrete/Vari-
SW10 = OFF (0)
SW10
able Speed
Fan Select
SW10 = ON (1)
NOTE: The functionality of SW7 and SW8 depends on the setting of SW9. If
SW9 is OFF, SW7 and SW8 will be for Heating Source and I/O Expansion
Module functionality. If SW9 is ON, SW7 and SW8 will be for Compressor
Availability functionality.
WARNING
Proper antifreeze/water solution is required to minimize the potential of fluid
freeze-up. DIP switch 3 (SW3) is factory set for water freeze protection with
the switch in the OFF position. Operation at fluid temperatures below 32°F
with anti-freeze protection requires SW3 to be field configured for the switch
on. If unit is employing a fresh water system (no anti-freeze protection), it is
extremely important that SW3 setting remains in the OFF position (factory
default setting) in order to shut down the unit at the appropriate water
temperature to protect your heat pump from freezing. Failure to do so can
result in unit damage, property damage and will void unit warranty.
OM 1364-1
Model/Options
Normal Operation
Service/Test Mode
Continuous Fan Operation
(On)
Cycling Fan Operation (Auto)
Water Loop Fluid
Glycol Loop Fluid
Disabled FFD
Enabled FFD with LWT sen-
sor installed
Short Range -5 to +5 F (-2.78
to +2.78 C)
Long Range 55 to 95 F
(12.78 to 35 C)
Thermostat Control
Room Sensor Control
Allow Compressor in Heating
Mode
Disable Compressor in Heat-
ing Mode
IO Expansion Module Not
Required
IO Expansion Module is
Required
Both Compressors Available
(Automatic Compressor Fail
Replace)
Lead Compressor Available
(Lag Compressor is Off-Line)
No Compressors Available
Single Compressor WSHP
Application
Two Compressor Application
Fan Single (Fan Main Output)
or Variable (PWM) Speed
Dual Speed Fan (Low & High
Discrete Outputs)
Table 4: MT2310 I/O expansion module DIP switch settings
Switch
Description
Variable Fan
0000 to 1111
SW1-4
Speed Row
Selection
SW5 = OFF (0)
SW6 = OFF (0)
SW5 = ON (1)
SW6 = OFF (0)
Secondary
SW5/
Heating
SW6
SW5 = OFF (0)
Options
SW6 = ON (1)
SW5 = ON (1)
SW6 = ON (1)
Hot Gas
SW7 = OFF (0)
SW7
Reheat
(HGR)
SW7 = ON (1)
SW8 = OFF (0)
Waterside
SW8
Economizer
(WSE)
SW8 = ON (1)
WSHP IO
SW9 = OFF (0)
Expansion
SW9
Application
SW9 = ON (1)
Select
SW10 = OFF (0)
Single
Compressor:
Speed
SW10 = ON (1)
SW10
Two
SW10 = OFF (0)
Compressor:
Lead
Compressor
SW10 = ON (1)
Select
NOTE: The functionality of SW10 depends on the setting of SW9. If SW9 is OFF,
SW10 will be for Single Compressor Speed. If SW9 is ON, SW10 will be for
Lead Compressor Select.
Figure 3: MT2310 I/O Expansion DIP Switches
TB1
TB1
H4
H4
7
Position
Model/Options
Variable Speed Fan Row
Selection (1 to 16), used
when "nciVsNetCnfgEn"
Binary
is set to "Disable" the
network override.
None
Supplemental Electric
Heat
Boilerless Electric Heat
Hydronic Heating
HGR Disabled
HGR Enabled
Waterside Economizer
Disabled
Waterside Economizer
Enabled
Single Compressor
Application
Two Compressor
Application
Single Speed Compressor
Dual Speed Compressor
Compressor 1 is Lead
Compressor 2 is Lead
H5
H5
PWM
PWM WSE
WSE GND
GND HGR
HGR GND
GND
AUX1 GND
AUX1
GND AUX2
AUX2 GND
GND RV2
RV2 GND
WWW.DAIKINAPPLIED.COM
H6
H6
GND COMP2
COMP2 GND
GND
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