GCH15010
21
<Operation settings>
Freeze stat function
Menu subtitle
Function/ Description
Freeze stat function
An operational function to prevent the water circuit from freezing when outdoor ambient temperature drops.
Flow t.
The target outlet water temperature at water circuit when operating in Freeze stat function. *2
Outdoor ambient temp. 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)"
*1. When the system is turned off, freeze stat function is not enabled.
*2. Flow t. is fixed to 20°C and unchangeable.
Heating operation
1. Heating operation for auto adaptation mode
Menu subtitle
Function
Range
Unit
Default
Flow temp. range
Minimum temp.
To minimize the loss by frequent ON and OFF in mild outdoor ambient
temperature seasons.
To set max. possible flow temperature according to the type of heat emitters.
Allows heat pump operation until the flow temperature rises above the
target flow temperature plus upper limit value.
Prohibits heat pump operation until the flow temperature drops below the
target flow temperature plus lower limit value.
To minimize the loss by frequent ON and OFF in mild outdoor ambient-
temperature seasons.
Selectable according to the heat emitter type and the materials of floor (i.e.
radiators, floor heating-thick, -thin concrete, wood, etc.)
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 temperature is relatively low.*
25 - 45
ºC
40
Maximum temp.
35 - 60
ºC
50
Room temp. control
Mode
Normal/
Fast
--
Normal
Interval
10 ~ 60
mins.
10
Heat pump thermo diff.adjust
On/Off
On/Off
—
On
Lower limit
íí
ºC
í
Upper limit
+3 - +15
ºC
< Heating operation(Room temp.control table) >
Note:
This function allows operational setting of flow temperature range from the Ecodan and also the time interval at which the FTC collects and processes data for the auto
adaptation mode.
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 most efficient and will result in increased running cost when compared to normal mode.
Note: Recommended flow rate setting at Manual mode is listed below.
2.Heating operation for auto adaptation, compensation curve, and flow temp. control
Menu subtitle
Function
Range
Unit
Default
Auto mode automatically selects a flow rate from 3 to 7 L/min appropriate
for effective operation according to Room temp. control. Manual mode
targets Flow rate setting value.
※
Select Manual mode except for Room temp. control.
Flow rate setting
Mode
Auto/
Manual
—
Auto
Flow rate
3 - 8
L/min
7
Select the target circulation flow rate for heating at Manual mode.
※
Be aware of the shortage of required flow rate for each heat emitters.
・
When the Flow temp. is high (e.g. radiator) recommended flow rate is low
・
When the Flow temp. is low (e.g. underfloor heating) recommended flow rate is high.
・
Low flow rate setting with low flow temp. may cause frequent ON/OFF operation of pump.