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Main setting item (cont.)
(11) Setting second remote controller (room temperature measurement) (function codes: 40, 92, 93, 94, 95, 96,
9D and remote control function codes 02 and 03)
• When system control is required using room air temperature make these settings to enable this function.
• Enable the room temperature control using FC40
• Set upper and lower heating / cooling temperature limits using FC’s 92, 93, 94 and 95
• Set initial target water temperatures for heating and cooling using FC’s 96 and 9D
• Set room temperature offsets for heating and cooling using remote controller FC’s 02 and 03
• Set remote controllers as header / second and room temperature/water temperature functions using DPSW’s 1 and 2
on the remote controllers
.
(12) Setting 2-Way Valve (for Cooling) Operation (function code: 3C)
• When using both cooling and heating operations and there is an indoor unit only for heating (such as floor
heating), install the 2-way valve and set this function code.
(13) Setting 3-Way Valve Operation (function code: 54)
• This setting is not necessary for normal installation. Make this setting to invert the logic circuit in case ports
A and B of the 3-way valve are wrongly attached and it cannot be rectified on site.
(14) Mixing valve types and setting (function code: 0C)
• Set the time period from full close to full open of the 2-zone control mixing valve. Set a value that is 1/10 of
the actual time.
(15) Setting Heating/Hot Water Switching when Boiler Is Used (function code: 3E)
• When boiler is used, make this setting to operate the Hydro Unit by the instruction from the boiler.
(16) Setting Heat Pump Operating Time for Hot Water Supply Operation (function code: 07)
• Set the time period from the start of heat pump run to the start of heater energization at the beginning of hot
water supply operation. If a long period is set, it takes long time for heating water.
(17) Setting Cooling ON/OFF (function code: 02)
• Set this function when performing cooling operation.
(18) Remote controller time indication (function code: Remote controller 05)
• 24-hour or 12-hour notation is selected for the timer.
(19) Setting Nighttimes Quiet Operation (function codes: Remote controller 09 to 0B)
• Issue an instruction for low-noise mode operation to the outdoor unit. Enabling/disabling of this function, start
time, and end time can be set.
(20) Setting Alarm Tone (function code: Remote controller 11)
• The remote controller alarm tone can be set.
Function Code Setting
Function Code Setting
Function Code
Range Default
Setting Address
Hydro
Unit
Remote
Controller
(1) Setting Temperature
Range
Heating Upper Limit - Zone 1 1A - 37~55°C 55
Heating Lower Limit - Zone 1 1B - 20~37°C 20
Heating Upper Limit - Zone 2 1C - 37~55°C 55
Heating Lower Limit - Zone 2 1D - 20~37°C 20
Cooling - Upper Limit 18 - 18~30°C 25
Cooling - Lower Limit 19 - 10~20°C 10
Hot Water - Upper limit 1E - 60~80°C 75
Hot Water - Lower limit 1F - 40~60°C 40
(2) Hot Water Operation
Heat Pump Start Temperature 20 - 20~45°C 38
Heat Pump Stop Temperature 21 - 40~50°C 45
(3) Hot Water
Temperature
Compensation
Temperature Compensation Outside Air
Temperature (°C)
24 - -20~10°C 0
Compensation Temperature (°C) 25 - 0~15°C 3
(4) Hot Water Boost
Operation Time (x10 min) 08 - 3~18 6
Setting Temperature (°C) 09 - 40~80°C 75
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