Hitachi YUTAKI Series Instruction And Operation Manual page 135

UNIT CONTROLLER
Question Description
Question 5a Which are the emitters of circuit 1?
Question 5b Which are the emitters of circuit 2?
Do you have domestic hot water tank
Question 6
installed?
Do you have swimming pool
Question 7
installed?
Question 8 Do you have boiler installed?
Do you have electric backup heater
Question 9
installed?
Question 10 Select the bivalent point:
Question 11 How many thermostats are installed?
Question 12 How are they connected?
123 PMML0335A rev.1 - 04/2016
Answers
Water calculation mode for circuit 1 heating (C1WC) = "Gradient"
Underfloor
heating
Gradient curve for circuit 1 (C1OTC) = "0.4"
Water calculation mode for circuit 1 heating (C1WC) = "Fix"
Fan coils
Fixed T for circuit 1 (C1TF) = "45"
Water calculation mode for circuit 1 heating (C1WC) = "Gradient"
Radiators
Gradient curve for circuit 1 (C1OTC) = "1.2"
Water calculation mode for circuit 2 heating (C2WC) = "Gradient"
Underfloor
heating
Gradient curve for circuit 2 (C2OTC) = "0.4"
Water calculation mode for circuit 2 heating (C2WC) = "Fix"
Fan coils
Fixed T for circuit 2 (C2TF) = "45"
C2WC = "Gradient"
Radiators
Gradient curve for circuit 2 (C2OTC) = "1.2"
No Status (DHWs) = "Disabled"
Yes Status (DHWs) = "Enabled"
No Status (SWP) = "Disabled"
Yes Status (SWP) = "Enabled"
No -
Yes -
If question 8 has been answered as "Yes":
- Heating source (HES) = "HP+Boiler"
No
If question 8 has been answered as "No":
- Heating source (HES) = "HP Only"
If question 8 has been answered as "Yes":
- Heating source (HES) = "HP+EH+Bo."
Yes
If question 8 has been answered as "No":
- Heating source (HES) = "HP+Heater"
If questions 8 and 9 have been answered as "Yes":
a) If value is <"-15":
- Bivalent point (BOBP) = Value
- Bivalent point (HEBP) = Value + 5
b) If value is ≥"-15":
-20 to 20 - Bivalent point (HEBP) = Value
- Bivalent point (BOBP) = Value - 5
If question 8 has been answered as "Yes" and question 9 as "No":
- Bivalent point (BOBP) = Value
If question 8 has been answered as "No" and question 9 as "Yes":
- Bivalent point (HEBP) = Value
0 Thermostat type (RTType) = "None"
1 -
2 -
If question 11 has been answered with a value different than "0", "Check RT
Wired
address" is launched.
If question 11 has been answered as "1":
- Thermostat 1 (otC1) = "C1"
- Thermostat 2 (otC2) = "None"
Wireless
If question 11 has been answered as "2":
- Thermostat 1 (otC1) = "C1"
- Thermostat 2 (otC2) = "Room C2"
Action