Hitachi RWM-(H)FSN3E, Руководство по обслуживанию

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5 Control system
SMGB0070 rev. 1 - 08/2011
128
Configuration 2: Direct and mixing circuit (two levels of water outlet temperature)
Zone 1: Low temperature
(5~12 ºC)
Zone 2: Medium temperature
(16~21 ºC)
Hydraulic
Separator
Second temperature
control
Secondary
water pump
Motorized
3way valve
Aux Heater
Plate HEX
Exp vessel
When the YUTAKI S is connected to two different cooling circuits, circuit 1 will be direct (low temperature for fanoils ope-
ration (12~5ºC)) and circuit 2 will be a mixing circuit in order to have a second temperature control using mixing valve
(medium temperature for floor refreshing operation (16~22ºC)). Additionally, a motorized valve can be added in order to
close direct circuit when not in use (see Optional functions chapter).
The unit can always be combined with Sanitary tank (with solar kit extension) and with swimming pool.
Water temperature target depends on the maximum cooling supply set-points (Target area 1, target area 2).
N O T E
In case of Radiator and Refreshing floor installation, Radiators valve will be closed and disabled by user and the
system only works for refreshing floor. (See Optional functions chapter).
• Selecting space cooling configuration
Available system configuration will be set using water type for space cooling operation:
CODE REF Description Default Value
CIRCUIT 1 (Direct circuit)
3-004 WTc1 Water Calculation Cooling C1 (None; OTCpoints; Fix) Fix
CIRCUIT 2 (Mixed circuit)
3-104 WTh2 Water Calculation Cooling C2 (None; OTCpoints; Fix) None
N O T E
By default, YUTAKI S will be configured for only one circuit (Direct circuit) and fixed water temperature setting.