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5
System Set Up
<[Operation settings]>
[Heating operation]
This function allows operational setting of flow temperature range from the heat pump unit and also the time interval at which the FTC
collects and processes data for the auto adaptation mode.
Menu subtitle
Flow temp. range
Room temp. control
en
Heat pump thermo diff.
adjust
Note:
1. The minimum flow temperature that prohibits heat pump operation is 20ºC.
2. The maximum flow temperature that allows heat pump operation equals to the maximum temperature set in the Flow temp. range
menu.
* Fast mode is not efficient and will increase running cost when compared to normal mode.
[Freeze stat function]
Menu subtitle
Freeze stat function *1
Flow t.
Outdoor ambient
temp.
*1 When the system is turned off, freeze stat function is not enabled.
*2 Flow t. is fixed to 20ºC and unchangeable.
[Simultaneous Operation]
For periods of very low outside temperature this mode can be
used. Simultaneous operation allows both DHW and space heating
to run together by using the heat pump and/or booster heater (if
present) to provide space heating whilst only the immersion heater
provides heating for DHW. This operation is only available if BOTH
a DHW tank AND immersion heater are present on the system.*
[Cold weather function]
For extremely low outdoor ambient temperature conditions when
the heat pump's capacity is restricted the provision of DHW is
supported by the immersion heater,where fitted.
The support of both space heating and DHW can only be provided
if the heat pump unit is also fitted with an electrical booster heater.
Note:
Electrical booster is only applicable to some modules.
43
Function
Minimum
To minimize the loss by frequent ON and OFF in mild out-
temp.
door ambient temperature seasons.
Maximum
To set max. possible flow temperature according to the type
temp.
of heat emitters.
Mode
Setting for Room temp. control
At Fast mode, target outlet water temperature is set higher
than the one set at normal mode. This reduces the time to
reach the target room temperature when the room tempera-
ture is relatively low.*
Interval
Selectable according to the heat emitter type and the ma-
terials of floor (i.e. radiators, floor heating-thick, -thin con-
crete, wood, etc.)
On/Off
To minimize the loss by frequent ON and OFF in mild out-
door ambient temperature seasons.
Lower limit
Prohibits heat pump operation until the flow temperature
drops below the target flow temperature plus lower limit
value.
Upper limit
Allows heat pump operation until the flow temperature rises
above the target flow temperature plus upper limit value.
Function/ Description
An operational function to prevent the water circuit from freezing when outdoor ambient tempera-
ture drops.
The target outlet water temperature at water circuit when operating in Freeze stat function. *2
Minimum outdoor ambient temperature which freeze stat function will begin to operate,
(3 - 20ºC) or choose**. If asterisk (**) is chosen freeze stat function is deactivated. (i.e. primary
water freeze risk)"
• Range of outdoor ambient temperature at which
simultaneous operation starts is −30°C to 10°C (default
−15°C).
• System shall automatically return to routine operation. This
will happen when the outdoor ambient temperature rises
above the selected temperature for this specific mode of
operation.
• Range of outdoor ambient temperature at which cold
weather function starts is −30°C to −10°C (default −15°C).
• System shall automatically return to routine operation. This
will happen when the outdoor temperature rises above the
selected temp. for this specific mode of operation.
Range
Unit
Default
20 to 45 ºC
30
35 to 60 ºC
50
Normal/
Normal
Fast
—
10 to 60 min
10
On/Off
On
—
−9 to −1 ºC
−5
+3 to +5 ºC
+5
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