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• Table 2 shows how the field-installed heater is controlled.
Table. 2 [Heater Control Table]
(To -T RA ) >
Mode Change
2.7 ° F
[1.5 °C]
EH1 ON
○
EH2 ON
EH1 OFF
EH2 OFF
KEY
• EH1: Electric Heater 1
• EH2: Electric Heater 2
• To: Set point temperature
• T RA : Return Air temperature
• X: Time delay (Selectable. Default is 20 min. Selectable to 10, 15, or 25 min)
• Table 3 shows how the time delay is selected
Table. 3 [Time Delay Selection Table]
Function Setting *1
108-1
Set Time Delay to 10 minutes
108-2
Set Time Delay to 15 minutes
Set Time Delay to 20 minutes *2
108-3
108-4
Set Time Delay to 25 minutes
*1 Time delay can only be selected with MA controller. If use of a non-MA controller is desired, the time delay must first be
selected with the MA controller. Then the non-MA controller can be attached and used.
*2 The default time delay setting is 20 minutes.
* 3 Time delays are approximate.
Specifications are subject to change without notice.
T RA has not
increased by
AND
0.9 °F [0.5°
C] in X min
AND
○
Action *3
Condition
(To -T RA ) >
EH1 ON for
AND
2.7 ° F
> 5 min
[1.5 ° C]
○
AND
○
23
T RA has not
(To -T RA ) <
AND
increased by 0.9 ° F
[0.5° C] in 5 min
AND
○
© 2017 Mitsubishi Electric US, Inc.
0.9 °F
[0.5° C]
○
○
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