Rheem RIDH09AVFJ, Design & Technical Manual, Page: 35 / 64

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AUXILIARY HEATER OUTPUT
 
A signal is outputed from Connector when indoor fan and compressor is turned on under heating
operation.
* Signal output performance speci
fi cations are as
shown on the right
Ex. When Set Temperature (Ts) is 72 °F (22 °C);
▪ and Room Temperature (Tr) increase above 52 °F
(12°C), signal output is on.
▪ and Room Temperature (Tr) increase above 70 °F
(21 °C), signal output is off.
▪ and Room Temperature (Tr) decrease below 66 °F (19 °C), signal output is ON.
▪ and Room Temperature (Tr) decrease below 48 °F(10 °C), signal output is OFF.
Jumper wire (Indoor Unit)
 
This is used to continue indoor unit fan operation for 1 minute after thermo OFF in heating mode.
1 minute delay control set by cutting jumper wire on PC board.
Circuit diagram example
 
Field supply
Indoor unit
control PC board
Connector
1
12 V
On/Off 2
Signal
Relay
power
supply
*: Make the distance from the PC board to the connected unit within 33 ft. (10 m
Relay spec. : Rated DC 12 V, 50 mA or less.
Ex.) Heater
Connected unit
Ex.) Relay unit
33 ft.*
(10 m)
ON
OFF
Operation
Stop
Heating
operation
Indoor unit fan
ON
OFF
Output signal
1min
CAUTION
Place an external heater between the indoor unit
and the outlet.
Be sure to use delay control of the fan.
Parts (Optional)
 
Model name
Wire (Heater output)
OFF
OFF
ON
Tr-Ts = -2 °F (-1 °C)
Tr-Ts
Tr-Ts = -6 °F (-3 °C)
Tr-Ts = -20 °F (-10 °C)
Tr-Ts = -24 °F (-12°C)
External
Heater
Supply air Return air
Indoor unit
!