Technical data

Ichill 200CX EVO rev 1.1 14/11/2013
Pag. 82 of 151
If the production of sanitary hot water is required during operation in chiller mode:
• the domestic hot water circulation pump is switched on
• after a delay of FS27 seconds the domestic hot water valve 1 is switched on
• after the FS10 delay the domestic hot water valve 2 is switched off
The following two cases could occur during the production of sanitary hot water:
• The domestic hot water set-point is reached when the chiller is working (the chiller set-point is not
reached):
• the domestic hot water valve 2 is switched on
• after the FS10 delay the domestic hot water valve 1 is switched off
• after a delay of FS28 seconds the domestic hot water circulation pump is switched off
At the end of this phase, if necessary, the machine continues to regulate in chiller mode.
• The regulation temperature reaches the chiller set-point (parameter ST01) and the sanitary hot
water production is working:
• the domestic hot water circulation pump stays on
• the domestic hot water valve 2 is switched on
• after the FS10 delay the domestic hot water valve 1 and the compressors are switched off
• after the DF07/2 delay the 4-way valve status is reversed
• after dF07/2 the compressors are switched on again to produce hot domestic hot water
• after the FS11 delay from the 4-way valve switching, the domestic hot water valve 1 is
switched on
• after the FS10 delay the domestic hot water valve 2 is switched off
Once the domestic hot water set-point is reached:
• the domestic hot water valve 2 is switched on
• after the FS10 delay domestic hot water valve 1 is switched off
• after FS28 seconds the domestic hot water circulation pump and the compressors are
switched off
• after the dF08/2 delay the status of the 4-way valve is reversed
If the domestic hot water production is working and the temperature detected by the chiller
regulation probe is greater than ST01+ST07 (cold water required), the sequence of operatiuon is
the following:
• the domestic hot water pump will remain on
• the sanitary valve 2 is switched on
• after the FS10 delay the domestic hot water valve 1 is switched off
• the compressors are switched off
• after the DF08/2 delay the 4-way valve status is reversed
• after a delay of dF08/2 the compressors are switched on to produce chilled water and
domestic hot water
When the domestic hot water set-point is reached:
• domestic hot water valve 2 is switched on
• after the FS10 delay the domestic hot water valve 1 is switched off
• after a delay of FS28 seconds the domestic hot water circulation pump is switched off
b) None of the compressors are switched on for the production of chilled water
In this case, the cycle is reversed as follows:
• the 4-way valve status is reversed
• after dF07/2 the compressors are switched on
•
the domestic hot water pump switches on after the FS11 delay from start-up of the compressors
• after a delay of FS27 seconds the domestic hot water valve 1 is switched on
• after the FS10 delay the domestic hot water valve 2 is switched off.
Once the domestic hot water set-point is reached, the sequence of operation is the following:
• the sanitary valve 2 is switched on
• after the FS10 delay the domestic hot water valve 1 and the compressors are switched off
• after a delay of FS28 seconds the domestic hot water circulation pump is switched off