Technical data

ManualsBrandsWork Pro ManualsAmplifierZENITH 600

CTC EcoZenith i550 Pro

For the property owner

9.5.2.9 Ext Boiler

In this menu settings for the external additional boiler are

made.

Ext boiler diff °C 5 (3...20)

Here you set how much the temperature is allowed to

drop below the stop temperature before the external

boiler starts again.

Minimum temp ext. boiler ° C 30 (10 ... 80)

Start temperature for the external boiler charge pump.

Displayed only when the temperature sensor in the

external boiler is installed and deﬁned.

Delay. Charge pump (min) 0 (0 ... 20)

This function will delay the stop of the charge pump.

The charge pump continues to circulate water during

the set time, after the external boiler has been shut

down. Only applicable for boilers with very small internal

volume of water to prevent overheating.

Tariff ext boiler Off (Off...On)

This indicates whether the product is connected to tariff-

controlled electricity. When the heat pump is turned off

by the grid, the external boiler should activate.

Delay. Stop ext. boiler (min) 0 (0 ... 240)

The stop (shut down) of the external boiler can be

delayed when it’s no longer needed. This is used to

avoid short operating times (risk of corrosion). The boiler

is kept warm during the delay time.

Priority Low (Low...High)

“Low” The external boiler is prioritized after the

immersion heater(s).

“High” The external boiler is prioritized over the electric

heater(s) if both heat sources are deﬁned in the system.

Delay priority low 120(30...240)

Delay of the heat source which has been given “low”

priority. For instance, if the external boiler has the

priority “High”, the immersion heater(s) then get(s) the

priority “Low” and is/are delayed the set number of

minutes before being permitted to engage and assist

in operation. NOTE: Irrespective of the setting, the

immersion heater in the upper tank is used for extra

domestic hot water increase.

06-07 00-00 00-00

07-08 00-00 00-00

06-09 00-00

03-09 00-00

06-09 00-00

Elec. heater

Upper el.heater(s) kW 9

Lower el.heater kW 9

Lower el.heater °C 50

Delay mixing valve 180

Main fuse A 60

Conversion factor curr. sensors 1:1

Tariff, EL No

Upper tank

Stop temp HP °C 55

Start/stop diff °C 5

Extra DHW stop temp °C 60

Max time upper tank 20

Max time lower tank 40

Min temp °C 45

Add heat upper tank °C 55

Periodic extra DHW, days 14

Max temp diff end DHW °C 3

Stop DHW diff max 3

Run time DHW circ. 4

Time DHW circ 15

Diff start ext DHW buffer 5

Timer DHW circulation

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

Lower tank

Tank max. °C 55

Tank min. °C 25

Diff. tank vs primary °C 0

Start/stop diff tank °C 5

Timer setpoint 50

Timer lower tank

Solar panels

dT max solar °C 7

dT min solar °C 3

Min speed pump % 30

Max lower tank °C 85

Max temp brine °C 18

dT max ground °C 60

dT min ground °C 30

Solar test tank min 4

Test frequency min 30

Winter mode Off

Protection collector

Wood boiler

Start at ﬂ ue gas temp °C 100

Ext Boiler

Ext boiler diff °C 5

Minimum temp ext. boiler ° C 30

Delay. Charge pump (min) 0

Delay. Stop ext. boiler (min) 0

Priority Low

Delay priority low 120

External buffer

dT lower ext °C 7

dT start upper °C 7

dT stop upper °C 3

Charge start lower °C 80

dT start lower °C 7

dT stop lower °C 3

dT setpoint lower °C 7

HP charging

Pool

Pool temp °C 22.0

Pool diff. °C 1.0

Pool prio. °C Low