Samsung AE090JNYDEH User Manual page 50

Field setting mode
Backup Heater Variables for Space Heating
• The FSV #4021 should be set to 1(Yes) to use 2-stage electric backup heater in hydro unit as an additional
heat source.
• To compensate the lowered heat pump heating performance under very cold weather conditions, the FSV
#4023 should be set to "1(On)"(Default).
– The threshold temperature to use backup heater for cold weather compensation: FSV #4024,
Default "0˚C", Range -15 ~ 35˚C
– The backup heater operation is restricted to save energy in the threshold temperature range.
• The FSV #4022 for backup heater priority should be set to "0 (both)" (Default) or "1" (backup) to use backup
heater. If not (booster heater priority), the backup heater can be operated in case of no booster heater
demand.
• The threshold temperature for backup heater operation during defrost mode to prevent cold draft because
of chilled water can be controlled by adjusting FSV #4025. Under FSV #4025 of water outlet temperature,
backup heater Will be turned on.
NOTE
• To use both heaters together at the same time, please check the capacity of the power
circuit breaker of your house before use.
External Backup Boiler for Space Heating (Field Option)
• The FSV #4031 should be set to "1 (Yes)" to use a backup boiler as an additional heat source.
(default: "0 (No installation)")
• Priority of backup boiler and heat pump is defined by FSV #4032 (default: "0 (OFF)")
• To compensate the lowered heat pump heating performance under very cold weather conditions, the backup
boiler operates instead of heat pump under the threshold temperature (FSV #4033, Default "-15˚C",
Range -20 ~ 5˚C).
Mixing vavle Installation(Field Option)
• The FSV #4041 should be set to "1 or 2" to use mixing valve.
※ 4041 =1 : Controlled based on the temperature difference (4042, 4043)
※ 4041 =2 : Controlled based on the temperature difference of the WL value
ex) Heating
Tw2
50 50
English English
<#4041=1>
FCU WL
#4042
Floor temp
<#4041=2>
Tw2
FCU WL
Floor WL
Ta
Ta