Common Heating/Cooling Household In Combination With Individual Dhw Production - Hitachi YUTAKI ATW-YCC-03 Installation And Operation Manual

4.4.5 Common Heating/Cooling household in combination with Individual
DHW production
This installation is suitable when there are different demands of DHW applications:
✓ Different DHW setting temperature
✓ Different DHW usage patterns
✓ Variety of DHW volume required
DHW production or Space Heating/Cooling production is simultaneously. This means that YUTAKI
CASCADE CONTROLLER can operate for Space Heating/Cooling application and each configured
Sub can operate for DHW when needed. Each Circuit 2 will continue working by using Mixing kit
and accumulate water into C1 Buffer tank.
In this scenario, YUTAKI CASCADE CONTROLLER manage both Space Heating/Cooling household
and YUTAKI DHW Production:
• C1 and C2 management is performed by means of YUTAKI CASCADE CONTROLLER.
• C1 and C2 can have wired/wireless/none thermostats or any combination option.
• Installer shall determine proper usage of collector systems.
YUTAKI
1
E.HEATER
3WV DHW
TDHW
YUTAKI
2
E.HEATER
3WV DHW
TDHW
YUTAKI
n
UP to 8
Example for illustrative purpose
PMEN0581 rev.2 - 04/2023
DHW
H-LINK
DHW
TWO3
C1
BUFFER
TANK
YCC YCC
RECEIVER
ATW-YCC-03
ATW- RTU-07/08
CIRCUIT 1
SPACE HEATING/
CIRCUIT 1
SPACE HEATING/COOLING COOLING
PC-ARFH2E
Or
ATW- RTU-07/08
CIRCUIT 2
SPACE HEATING/
CIRCUIT 2
COOLING
SPACE HEATING/COOLING
PC-ARFH2E
Or
ATW- RTU-06/09
4
32