Hitachi RWM-(H)FSN3E, Service Manual

Page: 170 / 424

5 Control system
SMGB0070 rev. 1 - 08/2011
160
Maximum time solar heating for DHW
In some high demand cases this function controls the maximum time that Sanitary Water can operate using Solar power
alone. Heater operation is not affected by it.
Solar power will be stopped when:
- Solar Operation Time > T
DHWMSOL
When Solar is stopped by this function, Sanitary Water will continue working by Heat Pump or heater (depending on water
condition).
If the DHW is banned by Timer or Tariff function, Sanitary tank will stop.
CODE REF Description Default Value Range Steps Units
3-126 T
DHWMSOL
DHW SOLAR maximum time 60 30~240 1 min
T
DHWSMAX
Hot water
request
DHW
heating by
solar
DHW
heating by
HP/EH
DHW
heating
Time
When T
DHWTMSOL
passed, wait Maximum DHW Time (defeault 45 min) from MAXIMUM / MINIMUM DHW LOADING TIME
(T
DHWMAX
/ T
DHWMIN
) water control chapter, for next solar mode.
T
DHWTSMAX
T
DHWTMAX
T
DHWTSMAX
Hot water
request
DHWT
heating by
solar
DHWT
heating by
HP/EH
DHWT
heating
Time
DHW blocked by timer