Toshiba Estia RUA-CP1701H, Руководство по обслуживанию

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Monobloc Outdoor Unit Service Manual
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To set the required pump speed parameter [P568] – maximum pump speed (vsp_max)must be set:
Par.No Description Range Default
568
Maximum pump speed – (vsp_log): (%)
50 ~ 100 100
For more details on setting the water pump speed please refer to the ESTIA Monobloc installation manual.
•
Speed controlled by the water temperature
∆
T ([P566] = 1)
It is also possible to configure the control of the variable speed hydronic unit so that the system achieves / controls
around a specific water temperature difference (
∆
T). The water pump automatically changes speed so as to maintain
a specific
∆
T set in the software parameters.
The required
∆
T is set using parameter [P569] – water delta T setpoint (dt_stp):
Par.No Description Range Default
569
Water delta T setpoint – (dt_stp): (K)
2.0 ~ 20.0 5.0
•
Minimum pump speed
The minimum pump speed must be set to ensure that the minimum water flow rate is sufficient to CLOSE the contacts
of the water flow switch. If the flow switch contacts do not CLOSE after the system attempts to start, after 5 retries, an
alarm is generated and error code 32 is displayed on the remote controller.
The minimum pump speed is set using parameter [P567] – minimum pump speed (vsp_min):
Par.No Description Range Default
567
Minimum pump speed – (vsp_min): (%)
19 ~ 50 19
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Domestic hot water mode
When the unit is producing hot water (the unit is in DHW mode), it is possible to change the speed of the water pump
to allow for different surface areas on the DHW cylinder internal heat exchanger. The variable speed pump can only
be set to constant adjustable speed logic. The parameter to configure is Pump Speed in DHW parameter ([P710],
vsp_dhw).
The water pump speed, for DHW mode, is set using parameter [P710] – pump speed in DHW mode (dhw_vsp):
Par.No Description Range Default
710
Pump speed in DHW mode– (dhw_vsp): (%)
19 ~ 100 100
Please remember that the water flow switch is also incorporated into the DHW heat exchanger circuit. It is essential
that [P710] is not set too low so as to allow the flow switch contacts to OPEN
•
Overview of the different variable speed pump operating modes
Mode or
Override VSP Logic
[P566]
Pump Speed
Heating
[P566]= 0 Speed = vsp_max [P568]
[P566]= 1
According to Delta T, between min [P567] and max [P568] configured
speed.
Cooling
[P566]= 0 Speed = vsp_max [P568]
[P566]= 1 According to Delta T, between min [P567] and max [P568] configured speed
Defrost Don’t care Maximum speed (100%)
DHW Don’t care Speed = vsp_dhw [P710]
Purge Don’t care Speed = vsp_max [P568]
Header / Follower [P566] = 0 Speed = vsp_max [P568]
Freeze Protection Don’t care Maximum speed (100%)
Anti-sticking Don’t care Speed = vsp_min [P567]