Midea M thermal Mono Series Engineering Data page 67

M thermal Mono
7.15 SPECIAL FUNCTION
7.15.1 SPECIAL FUNCTION menu overview
MENU > FOR SERVICEMAN > SPECIAL FUNCTION
SPECIAL FUNCTION is used to pre-heating floor and
drying up floor once installation is complete or the first
time start up the unit or restart the unit after a long time
stop.
7.15.2 PREHEATING FOR FLOOR
MENU > FOR SERVICEMAN > SPECIAL FUNCTION > PREHEATING FOR FLOOR
Before floor heating, if a large amount of water remains on the floor, the floor may be warped or even rupture during floor
heating operation, in order to protect the floor, floor drying is necessary, during which the temperature of the floor should
be increased gradually.
During first operation of the unit, air may remain in the water system which can cause malfunctions during operation. It is
necessary to run the air purge function to release the air (make sure the air purge valve is open).
T1S sets the heat pump's leaving water set temperature in preheating for floor
mode.
t_fristFH sets the duration of preheating for floor mode.
The operation of the unit during preheating for floor mode is illustrated in Figure
3-7.50.
Whilst the preheating for floor operation is running, the number of minutes that it has been running for and the heat
pump's leaving water temperature are displayed on the user interface. During the preheating for floor operation all
buttons except OK are inactivated. To exit the preheating for floor operation, press OK and then select YES when prompted.
Refer to Figure 3-7.38.
66
Figure 3-7.40: Preheating for floor
Abreviations:
t_interval_H: Compressor re-start delay in space heating mode. (Refer to Part
3, 8.6 "HEAT MODE SETTING Menu").
Midea CAC Confidential
Figure 3-7.38: Special functions menu
12 SPECIAL FUNCTION
Active the settings and active the
"SPECIAL FUNCTION"?
NO YES
OK CONFIRM
Figure 3-7.39: Preheating for floor menu
12.1 PREHEATING FOR FLOOR
T1S
t_fristFH
12 SPECIAL FUNCTION
12.1 PREHEATING FOR FLOOR
12.2 FLOOR DRYING UP
OK ENTER
30°C
72 HOURS
ENTER EXIT
ADJUST
202005