Carrier 40MBAB - Page 24

40MBAB: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
24
S4 Dip Switch Settings
This dip switch group is for configuring the staging of supplemental heat
and for dehumidification fan control.
•S4-1: Use this dip switch when 2 stages of supplemental heat, W1 and
W2, are available; OFF allows for independent control of W1 and W2
via the Thermostat (dual stage), ON is used for single stage
supplemental heat, W1 and W2 are internally jumped together. The
default is ON
•S4-2: Use this dip switch to enable dehumidification fan operation.
OFF removes the internal jumper from R to DH, meaning DH will be
controlled via the thermostat. When the system is configured for
dehumidification and there is a demand present, the 24V output from
the thermostat drops to 0V, the refrigeration system starts the
dehumidification operation, and the fan air volume drops to low fan
speed.
ON creates an internal jump between R and DH, meaning no external
dehumidification signal is present, DH will always receive a 24V signal and the
fan will operate as normal. The default is ON.
NOTE: S4-2 operates on reverse logic. DH is energized when there is
no external dehumidification control.
A220844
Fig. 57 —S4 DIP Switch
Table 16 — Electric Heater Nominal Air Flow Settings
S4-2 Default ON:
Dehumidification
control not available.
OFF: Dehumidification
feature is enabled through
thermostat.
S4-1 Default ON:
For single stage
supplemental heat, W1 and
W2 are connected.
OFF: For dual stage supple
-
mental heat, W1 and W2 are
controlled independently.
Electric Heater Nominal Air Flow Settings (Sheet 1 of 3)
Capacity
External Static
Pressure
Range
Fan Speed
Electric
Heater Kit
24V Thermostat Wired Controller
Air Volume CFM
DIP Switch
24V
Terminal
Engaged
DIP Switch
Mode
40MBABQ18XA3 0 - 0.80 in. w.g.
Cooling Turbo — SW3-4=ON Y2/Y — Cool 618
Cooling High — SW3-4=OFF Y2/Y — Cool 576
Cooling Medium — — Y1 — Cool 529
Cooling Low — — — — Cool 488
Heat Pump Turbo — — — — Heat 565
Heat Pump High — — B+Y2/Y, W — Heat 541
Heat Pump
Medium
— — Y1 — Heat 435
Heat Pump Low — — — — Heat 400
Electric heater kit 0
(Default)
10KW
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
Heat + AUX, AUX 653
Electric heater kit 1
10KW,
8KW
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
Heat + AUX, AUX 624
Electric heater kit 2 8KW
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
Heat + AUX, AUX 594
Electric heater kit 3 5KW
SW4-1=OFF
SW4-2=ON
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=ON
Heat + AUX, AUX 565
40MBABQ24XA3 0 - 0.80 in. w.g.
Cooling Turbo — SW3-4=ON Y2/Y — Cool 824
Cooling High — SW3-4=OFF Y2/Y — Cool 759
Cooling Medium — — Y1 — Cool 694
Cooling Low — — — — Cool 629
Heat Pump Turbo — — — — Heat 788
Heat Pump High — — B+Y2/Y, W — Heat 753
Heat Pump
Medium
— — Y1 — Heat 641
Heat Pump Low — — — — Heat 524
Auxiliary Heater
Default 0
15KW
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=OFF
Heat + AUX, AUX 871
Auxiliary Heater 1
15KW,
10KW
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=OFF
SW4-3=ON
Heat + AUX, AUX 841
Auxiliary Heater 2
10KW,
8KW
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=OFF
Heat + AUX, AUX 818
Auxiliary Heater 3 5KW
SW4-1=OFF
SW4-2=ON
SW4-3=ON
W1, W2, AUX
SW4-1=OFF
SW4-2=ON
SW4-3=ON
Heat + AUX, AUX 788