External Output - Rheem RHMVZ3021SNAUNJ Design & Technical Manual

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7-2. External output

Use an external output cable with appropriate external dimension, depending on the number of ca-
bles to be installed.
¢ Indoor unit
• A twisted pair cable (22AWG) should be used. Maximum length of cable is 82 ft (25 m).
• Output voltage: High DC 12 V ± 2 V, Low 0 V.
• Permissible current: 50 mA
• For details, refer to Chapter 7-3.
 When indicator, etc. are connected directly
Example: Function setting 60 is set to "00"
 When connecting with a device equipped with a power supply
Example: Function setting 60 is set to "00"
 When connecting with a external heater
Output voltage:
Permissible current:
7-2. External output
"Combination of external input and output"
Resistor
LED
Connected unit
Connected device
(Operation status)
Connected unit
Heater ON: AC24V±25%
Heater OFF: Open
500mA
Heater
External heater unit
Relay
Relay
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on page 24.
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7. External input and output

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