Daikin IM 696-4 25
Service Information
When the jumper is in position 3-OFFBRD (no jumper
installed) there is no on-board voltage applied to the numbered
terminal of the corresponding binary output. In the case of
BO1 through BO4, BO11 and BO12, the numbered terminal is
simply “made” to the NO terminal when the corresponding
output is on (output relay energized) or to the NC terminal
when the corresponding output is off (output relay de-
energized). In the case of BO5 through BO10 and BO13
through BO16, the numbered terminal is simply “made” to the
NO terminal when the corresponding triac output is on. This
jumper configuration is used most often in this product
application. Refer to Table 13 on page 25 for the correct
jumper position for all the standard binary outputs.
The 2-BRD24V jumper configurat
ion is
not used in this
product application.
Binary output Output description Lit LED indication Jumper position
BO13
BO14
BO15
BO16
Table 13: Binary outputs for main control board (MCB)
BO1 Discharge air fan, On/Off Fan ON 3-OFFBRD (no jumper)
BO2 Return air fan, ON/OFF Fan ON 3-OFFBRD (no jumper)
BO3 Fan Operation Output Signal Fans ON 1-SRC V
BO4 Alarm Output Signal Normal 1-SRC V
BO5 Close outdoor air dampers Closing 3-OFFBRD (no jumper)
BO6 Open outdoor air dampers Opening 3-OFFBRD (no jumper)
BO7
a
Close chilled water valve Closing 3-OFFBRD (no jumper)
Close chilled water F&BP dampers Closing 3-OFFBRD (no jumper)
Cool enable Enabled 3-OFFBRD (no jumper)
Evaporative condenser sump pump, ON/OFF Pump ON 3-OFFBRD (no jumper)
BO8
b
Open chilled water valve Opening 3-OFFBRD (no jumper)
Open chilled water F&BP dampers Opening 3-OFFBRD (no jumper)
BO9
c
Close heating valve Closing 3-OFFBRD (no jumper)
Close heating F&BP dampers Opening 3-OFFBRD (no jumper)
BO10
d
Open heating valve Opening 3-OFFBRD (no jumper)
Open heating F&BP dampers Opening 3-OFFBRD (no jumper)
BO11
e
Gas furnace enable/disable Enabled 1-SRC V
Single stage heat ON/OFF Heat On 1-SRC V
F&BP damper/valve changeover Dampers open / valve modulating 1-SRC V
Heat enable Enabled 1-SRC V
BO12 VAV box output signal Cooling mode 3-OFFBRD (no jumper)
Decrease discharge fan VFD speed Decreasing 1-SRC V
D
ehu
midification reheat circuit # 2 Reheat ON 3-OFFBRD (no jumper)
Increase discharge fan VFD speed Increasing 1-SRC
Dehu
midification reheat circuit # 1 Reheat ON 3-OFFBRD (no jumper)
Decrease return fan VFD speed Decreasing 1-SRC V
Increase return fan VFD speed Increasing 1-SRC V
a. If the unit is equipped with chilled water cooling, output BO7 closes the chilled water valve. If the unit is equipped with chilled water cooling with face and
bypass dampers, output BO7 closes the face dampers. If the unit is equipped with DX cooling, BO7 provides a signal to the auxiliary cooling control boards
(CCB1 and CCB2) to enable cooling operation. If unit is equipped with an evaporative condenser, BO7 turns the sump pump on.
b. If the unit is equipped with chilled water cooling, output BO8 opens the chilled water valve. If the unit is equipped with chilled water cooling with face and
bypass dampers, output BO8 opens the face dampers.
c. If the unit is equipped with modulating heat, output BO9 closes the heating valve. If the unit is equipped with modulating heat with face and bypass dampers,
output BO9 closes the face dampers.
d. If the unit is equipped with modulating heat, output BO10 opens the heating valve. If the unit is equipped with modulating heat with face and bypass dampers,
output BO10 opens the face dampers.
e. If the unit is equipped with modulating gas heat, output BO11 enables the gas furnace. If the unit is equipped with single stage heat for morning warm u
p
purposes, BO11 turns on the single stage of heat. If the unit is equipped with modulating heat with face and bypass dampers, BO11 changes the heat control
such
that BO9 and BO10 either modulate the heating value or the face and bypass dampers. If the unit is equipped with multiple stage electric heat, output
BO11 provides a signal to the auxiliary electric heat control board (EHB1) to enable heating operation.
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