Riello 20191845, Руководство пользователя

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8.3 Cascade system
Code Assembly unit Code Assembly unit Code Assembly unit
1.1 Master unit 8
T5:Domestic water tank tempera-
ture sensor (Accessory)
23 Mixing station (Field supply)
1.2... n Slave unit 9 Expansion vessel (Field supply) 23 .1 SV3:Mixing valve (Field supply)
2 User interface 10
T1:Total water flow temperature
sensor (Optional)
23 .2
PUMP C:Zone2 circulation pump
(Field supply)
3 SV1 3-way valve (Field supply) 11
Domestic hot water tank (Field
supply)
24
Automatic air purge valve (field
supply)
4 Balance tank (field supply) 11.1 TBH : Domestic hot water tank
booster heater
25 Water manometer (field supply)
4.1 Automatic air purge valve 11.2 Coin 1,heat exchanger far heat
pump
TW2
Zone2 water flow temperature sen -
sor (Optional)
4.2 Drainage valve 11.3 Coin 2,heat exchanger far solar
energy
FCU1... n Fan coil unit (field supply)
4.3
Tbt1 Balance tank upper temperature
sensor (optional)
12 Filter (accessory) FHL1... n Floor heating loop (field supply)
4.5 Filling valve 13 Check valve (field supply) K Contactor (field supply)
5
PUMP O: Outside circulation pump
(Field supply)
14 Shut-off valve (field supply) ZONE1
The zone operates cooling or hea-
ting mode
6 PUMP S: Solar pump (Field supply) 17 Tap water inlet pipe (field supply) ZONE2
The zone operates in heating mode
only
6.1
Tsolar:Solar temperature sensor
(Optional)
18 Hot water tap (field supply) AHS Auxiliary heat source (field supply)
6.2 Solar panel (Field supply) 19 Collector/distributor (field supply)
7 PU MP D: DHW pipe pump (Field supply) 20 Bypass valve (field supply)
Domestic water heating
O nly master unit (1.1) can operate in DHW mode. T5S is set on the user interface (2). In DHW mode, SV1(3) keeps. ON. When master unit
operated in DHW mode, slave units can operate in space cooling/heating mode.
Slave heating
All slave units can operate in space heating mode. The operation mode and setting temperature are set on the user interface (2). Due to
changes of the outdoor temperature and the required load indoors, multiple outdoor units may operate at different times.
In cooling mode, SV3(23.1) and PUMP C (23.2) keep OFF, PUMP O (5) keeps ON;
In heating mode, when both ZONE 1 and ZONE 2 work, PUMP C (23.2) and PUMP O (5) keep ON, SV3 (23.1) switches between ON and
OFF according to the set TW2;
In heating mode, when only ZONE 1 works, PUMP O (5) keep ON, SV3 (23.1) and PUMP C (23.2) keep OFF.
In heating mode, when only ZONE 2 works, PUMP O (5) keep OFF, PUMP C (23.2) keeps ON, SV3 (23.1) switches between ON and OFF
according to the set TW2;
AHS (Auxiliary heat source) Control
AHS should be set via the dip switches on main board (referto 10.1); AHS is only controlled by master unit. When master unit operates in
DHW mode, AHS can only be used for producing domestic hot water; when master unit operates in heating mode, AHS can only be used for
heating mode.
1) When AHS is set valid only in heating mode, it will be turned on in following conditions:
a.Turn on BACKUPHEATER function on user interface;