Design Technical Manual

Table Of Contents
Control Primary heater Auxiliary heater
Installation
congration
Function Setting
Indoor unit Wired R. C. Outdoor unit
Control
switching
external
heaters
No.61
IU fan setting for
external heater
DIP-SW2-3
Sensor activation
(UT Y-RNRU, UTY-
RNRUZ*, UTY-
RSRY, UT Y- RH RY,
or UT Y-RNKU)
Presence of heater
selection control
using outdoor unit
sensor No.35
Auxiliary heat
pump control
by outdoor
temperature 2
External device
VRF Heat Pump
*2
In-line
61-08
ON (Enable) -
35-01 (Enable)
Individual OFF ON (Enable) *1
Auxiliary heat
pump control
by outdoor
temperature 3
External device
VRF Heat Pump
*2 *3
In-line
61-09
ON (Enable) -
35-01 (Enable)
Individual OFF ON (Enable) *1
NOTES :
Corresponding indoor units: Except wall mounted type.
After turning off the heater, 3 minutes of standby time is required by next power-on of the heater.
For items marked "-" in the table, any of validate or invalidate of the setting are acceptable.
For shaded items in the table, setting change from the factory setting is required.
¾
1: Indoor unit fan setting will be ON for safety reason without sensor activation of Wired R.C.
¾
2: Heating operation is not performed when the outdoor temperature exceeds the boundary specied in
outdoor unit function number 37 setting.
¾
3: Heating operation is not performed when the outdoor temperature is lower than the boundary specied
in outdoor unit function number 36 setting.
- (08 - 34) -
EXTERNAL INPUT
& OUTPUT
EXTERNAL INPUT
& OUTPUT