Eco Heating Systems CB 105 HW, Инструкция по установке, обслуживанию и эксплуатации

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E93.1803.901 HW 87
The water heater is stopped when the supply temperature rises above DHW_Store_Setpoint plus
DHW_Store_Supply_Extra plus (37) DHW_Supp_Hyst_Up. Factory set: 60C + 0C + 4 = 64C
The demand for the tank is ended when the tank-sensor rises above DHW_Store_Setpoint plus
DHW_Store_Hyst_Up. The circulator continues DHW_Post_Pump_Period. Factory set: 60C + 4C = 64C
Store warm hold function
Because of the presence of the indirect tank sensor ( T_Store ) the control can detect demand for holding the tank
hot. If T_Store drops below (115) DHW_Store_Setpoint minus DHW_Store_Hold_Warm the heater starts at mini-
mum power.
Factory set: 60⁰C - 3⁰C = 57⁰C
So if tank slowly cools down below 57⁰C it will warm up to 64⁰C if there is a consumption of hot water and the
sensor drops below 55⁰C the heater will increase it’s power and the normal control will be active. The heater stops
if T_Store is higher than DHW_Store_Setpoint plus DHW_Store_Hyst_Up.
Relevant variables
Status Variables Value
DHW control state
Central Heating controller state
0 → Idle
1 → Request
2
→
Demand
3
→
Post circulation
4 → Off
13.1.19 A
NTI
-
LEGIONELLA PROTECTION
Anti-Legionella protection is enabled for DHW modes with an external tank with a sensor To prevent legionella a
special function is implemented in the software.
• The Anti-Legionella protection will be checked on the T_DHW_Out sensor.
At least once every 168 hours (7 days) the Anti_Legionella_Sensor must reach a temperature above Anti_Le-
gionella_Setpoint for a time specified by Anti_Legionella_Burn_Time.
If 7 days have passed and these conditions are not met, the heater is forced to heat-up the system for Anti-Le-
gionella. When the Anti_Legionella_Sensor temperature is below Anti_Legionella_Setpoint the control switches ON
the circulators, when the Anti_Legionella_Sensor temperature is above Anti_Legionella_Setpoint plus 5 °C (plus 9
°F) the control stops the circulators.
The heater setpoint will be Anti_Legionella_Setpoint plus DHW_Store_Supply_Extra.
If the supply temperature drops below the Heater_Setpoint the heater is started as well. The heater is PID controlled
towards the Heater_Setpoint. When the supply temperature rises above Heater_Setpoint plus DHW_Supp_Hys-
terese_Up the heater is switched OFF.
When the Anti_Legionella_Sensor is above Anti_Legionella_Setpoint minus 3 °C for Anti_Legionella_Burn-_Time
the controller goes into post circulation and ends the Anti-Legionella demand. When the controller has powered up,
the Anti_Legionella_Sensor temperature must reach a temperature of Anti_Legionella_Setpoint (for Anti_Le-
gionella_Burn_Time) within 2 hours, otherwise the heater is forced into Anti-Legionella demand.
Every time an Anti-Legionella demand has ended the Anti_Legionella_Active_Counter is incremented to indicate
how many Anti-Legionella actions have been performed. Also the Anti_Legionella_Wait_Time is started to delay
the next Anti-Legionella cycle.
The anti-legionella demand has priority over any DHW demand. However, when the anti-legionella protection is
active and there is no heat or burn demand because the Anti_Legionella_Sensor is already at a high enough tem-
perature DHW demand will be accepted as normal.
Below parameters can be set by the installer.
Parameter for installer
Following parameters cannot be set by the installer and are factory set
Parameter
Factory Setting.
(107) Anti Legionella Day
Sunday
(108) Anti Legionella Hour
0 hrs
Parameter
Factory Setting.
Anti_Legionella_Setpoint ( Setpoint for Anti-Legionella demand) 70 ºC (158 ºF)
Anti_Legionella_Burn_Time 30 Min.
Anti_Legionella_Wait_Time Wait time for Anti-Legionella demand. 120 min after cold start, 168 h after first successful Anti-Legionella demand