Toshiba Estia RUA-CP1701H, Руководство по обслуживанию

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Monobloc Outdoor Unit Service Manual
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Anti-Legionella ON:
To enable the schedule function the following parameters have to be set:
•
Anti-legionella water set-point [P405]
•
Anti-legionella start day of the week [P714]
•
Anti-legionella start time [P715]
Anti-Legionella OFF:
The anti-legionella control will switch OFF when:
•
DHW_TT > leg_STP [P405] -
∆
T DHW Stop [P722]
OR
• 6 hour internal timer has elapsed
8.2.10.
Night Mode
During night time operation it is possible to operate the system at a reduced compressor frequency to reduce the
noise level from the ESTIA Monobloc outdoor unit.
Related parameters for night mode operation:
Par.No Description Range Default
518 Night mode start time – (nghtstrt) 00:00 ~ 23:59 00:00
519 Night mode STOP time – (nghtstop) 00:00 ~ 23:59 00:00*
541 Power limitation value – (powr_lim): (%) 50 ~ 100 75
*When the night mode START and STOP times are both set to 00:00 then the night mode function is disabled
8.2.11. Water Freeze Protection
Units are fitted with heaters that are provided as a safeguard against freezing the water exchanger due to low outdoor
air temperature.
If no hydronic module option, then there is only one heater on internal hydraulic piping.
If hydronic module option is chosen, then there are two heaters: on internal hydraulic piping and on the BPHE.
The pump is controlled as follows:
•
If OAT goes below AntiFreezeDeltaSetpoint* [P517] + 6^C, the pump runs for 1 minute every 15
minutes at maximum speed.
•
If OAT goes below AntiFreezeDeltaSetpoint* [P517] + 6^C and EWT or LWT goes below
AntiFreezeDeltaSetpoint* [P517] + 4^C, the pump runs continuously at maximum speed.
•
A 1K hysteresis is applied to exit these two overrides.
The electric heaters are controlled as follows:
•
The electric heaters are energized during defrost and for 1 minute after defrost end.
•
The electric heaters are energized if OAT is below the AntiFreezeDeltaSetpoint* [P517] + 6.0 ^C and if either
EWT or LWT are lower than AntiFreezeDeltaSetpoint* [P517] + 4.0 ^C.
•
The electric heaters are de-energized if OAT is above the AntiFreezeDeltaSetpoint* [P517] + 7.0 ^C or if both
EWT (if configured) and LWT are higher than AntiFreezeDeltaSetpoint* [P517] + 4.5 ^C.
•
The electric heaters are energized if either alarm #50 or alarm #51 is active and can still automatically be
reset.
The unit switch to Booster Heating Mode as follows:
•
OAT is below AntiFreezeDeltaSetpoint* [P517] + 6.0 ^C and EWT or LWT goes below
AntiFreezeDeltaSetpoint* [P517] + 2.0 ^C
•
If Heat Pump is not allowed to run due to low OAT or in case of alarm the EHS can insure the backup. The
boiler cannot be used as backup because it is not installed on the same water loop.
The unit will run in Booster Heating Mode until either:
•
OAT returns above AntiFreezeDeltaSetpoint* [P517] + 7.0 ^C or both EWT and LWT return above
AntiFreezeDeltaSetpoint* [P517] + 6.0 ^C
* Modifying the pre-configured value is at the user’s responsibility.