12
Specifications subject to change without notice. IM-KSAIC03-03
DIP SWITCHES CONFIGURATION
The
24V INTERFACE KIT
must be configured to operate properly
with the system components with which it is installed. To successfully
configure the system, adjust the DIP Switches to match the
components and functions used.
NOTE: Properly identify the DIP Switch number marked
on the board of the 24V interface as SW1 through SW4
before selecting the options. On each DIP Switch block, the
numbers 1 and 2 are marked.
Fig. 19 — DIP Switch Definitions
DIP Switch 1-1
Used to turn
ON
or
OFF
the diagnostic code display LED on the 24V
Interface control board (see Fig. 20).
Table 8 — DIP Switch 1-1
Fig. 20 —LED
DIP Switch 1-2
Use for the indoor unit type selection.
Table 9 — DIP Switch 1-2
NOTES*:
1. Need to remove the indoor unit throttle (piston/TXV/ orifice);
2. The indoor fan stops during the DEFROST mode and starts
again 30 seconds after the defrost cycle is complete on the
outdoor unit. G1, G2 and G3 on the 24V interface will not
provide any fan output signal to the indoor fan during the
DEFROST cycle plus 30 seconds.
NOTE: If this 24V interface is matched with a non-ductless
indoor unit, the DIP Switch must be set to OFF.
DIP Switch 2-1
Use for selection of the system:
Cooling Only
or
Heat Pump.
Table 10 — DIP Switch 2-1
DIP Switch 2-2
Use for freeze protection of the indoor coil (only available on
scenarios 1 through 3).
Table 11 — DIP Switch 2-2
NOTE: Applicable only to the Ductless Style Indoor Heat
Pump units in the HEATING mode.
DIP Switch 3-1
On Ductless systems,
Dry
is used with thermostats with a
Dry
Function
output.
Table 12 — DIP Switch 3-1
DIP Switch 3-2
Use to increase the compressor frequency in case the set point has not
been reached after 1 hour or 3 hours of operation. The unit keeps
operating at
Variable Speed
in both instances.
Table 13 — DIP Switch 3-2
DIP Switch 4-1
Not required (planned for future applications). Select the indoor unit’s
FAN ONLY
mode.
Table 14 — DIP Switch 4-1
DIP Switch 4-2
Not required (planned for future applications). Select the indoor unit’s
fan speed (when selecting DIP switch 4-1).
Table 15 — DIP Switch 4-2
NOTE: If the SW4-1 is ON, the SW4-2 takes effect, otherwise the
SW1-2 takes effect.
SW1-1
Result
Note
ON
Display on
OFF
Display off
Default
SW1-2
Result
Note
ON
Sets - Both Ductless Indoor and Outdoor Units
(For Scenarios 1-3)
OFF
Outdoor only (Hybrid Solution) (For Scenario 4)
----- Compatible with other 24V indoor units Fan
Coil/Furnace/Cased Coil
Default
(see
NOTES*
below)
SW2-1
Result
Note
ON
Cooling Only
OFF
Heat Pump
Default
SW2-2
Result
Note
ON
Fan does not stop
OFF
Fan stops if the indoor coil temperature is low
Default
SW3-1
Result
Note
ON
Dry Mode
OFF
Used on future applications
Default
SW3-2
Result
Note
ON
1h
OFF
3h
Default
SW4-1
Result
Note
ON
The SW4-2 is available under fan only mode
OFF
The SW1-2 is available
Default
SW4-2
Result
Note
ON
Medium fan speed
OFF
High fan speed
Default
