Optional Functions; Screed Drying - Hisense Hi-Therma Series Service Handbook

10.9

Optional functions

10.9.1 Screed Drying

Unit has a special optional function exclusively used for the process of drying screed that has been newly applied to floor
heating systems. This process is based on EN1264 part 4. The water temperature set-point follows a predetermined
schedule upon activation of the floor screed drying function. Upon completion of the above sequence, the controller returns
to normal operation. Water Cycle 1 and Water Cycle 2 are forced to ON and mode is forced to heating.
The configuration of this option should be done through the master controller.
Configuration →Auxiliary Function →Screed Drying
Mark
Cycle 1 setting water
Screed_drying_TF1
temperature
Cycle 2 setting water
Screed_drying_TF2
temperature
Screed_drying_start Start Screed drying
The unit will has 7-days space heating operation according to following procedure.
Water temperature
set-point=25℃
on cycle 1 and cycle
NOTE:
1. Force Water Regulation Mode as [Fix] to maintain stable outlet water temperature when Screed Drying is activated.
2. Force [Off_mode(heating)] as [ON] to maintain stable outlet water temperature when Screed Drying is activated.
3. Set Screed_drying_TF1/ Screed_drying_TF2 higher than 26°C to operate specific Water Cycle when Screed Drying is
activated, otherwise specific Water Cycle will keep OFF.
Description Default Value
Water temperature set-point= Screed_drying_TF1 on cycle 1
Water temperature set-point= Screed_drying_TF2 on cycle 2
7-days space hea�ng opera�on
Range
55 25-55
55 25-55
_ _
277
Control function
Steps Units
1 °C
1 °C