Carrier 040-420 Installation And Service Manual page 66

4 IN/4 OUT MODULE (SIO) (Fig. 22) - 4 In/4 Out mod-
ule allows the following features to be utilized:
A remote thermistor (Part No, 30GB660002) is also re-
quired.
NOTE: This accessory is
temperature reset.
2. Temperature Reset by remote 4-20 mA signal.
3. Demand Limit by remote 2-stage switch.
4. Demand Limit by remote 4-20 mA signal
5. Dual Set Point by remote switch.
The options module is standard on 30GN040-210 and
associated modular chillers and is available as a
field-installed accessory on 3OGT225, 250, and 280
Flotronic T" II chillers.
Remember to reconfigure the chiller for each feature se-
lected (see Table 13). For temperature reset, demand limit,
and dual set point, desired set points must be entered through
keypad and display module (see Set Point Function section
on page 39).
See Table 17 for overall troubleshooting information.
not required for return water
L
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T
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T
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P
J6
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S
LEGEND
Communications Bus
Fig. 22 - 4 In/4 Out Module (SIO)
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ADDRESS
S W I T C H E S