User manual

Default setting: 7V, range: 3V – 10V (30 - 100%)

The following settings are made in the Service Menu. If not already in the Service Menu, enter the Service Menu by pressing and holding

left (<) arrow for at least 5 seconds. Use + or – to move up and down in the menu.

SERVICE

OPTIMUM

START FLOW CIRC.

Press + to set the start circulation pump speed. See note below.

Press left arrow several times to exit the SERVICE MENU

Start with a high setting, for example 10V.

Check that the circulation pump is running by listening, placing a hand on the circulation pump and listen for

air in the system.

If no flow is registered at 10V, check the system for air and bleed if necessary. See chapter "Filling and bleed-

ing". Also check that all heat system valves are open.

If flow is detected, normally within 60 seconds, decrease the setting by 10% (1V) until the flow is so low that

the F in the default display disappears.

(You must exit the SERVICE MENU and enter the default display for each decrease in speed)

Note the last reading for the F in the display and increase that value by 10%. This value is to be used as a

setting in

START FLOW CIRC.

Adjusting the fixed speed pump speed

Start with maximum speed setting.

Check that the circulation pump is running by listening, placing a hand on the circulation pump and listen for air in the system.

If flow is detected, normally within 60 seconds, decrease the setting until the flow is so low that the F in the default display disap-

pears.

If no flow is registered, check the system for air and bleed if necessary. See chapter "Filling and

bleeding". Also check that the flow sensor is in the correct direction (check the arrow on the flow

sensor) and also that all heat system valves are open.

Set the speed on the pump to the value where sufficient flow is guaranteed.

Check the delta temperature (the difference between the supply line and return line) should be 7–10°C. The delta is checked in the

INFORMATION MENU, see description as follows.

Check the delta temperature

The time it takes to get a correct and stable reading of the delta is dependant of the size of the heating sys-

tem.

The following settings are made in the INFORMATION MENU. If not already in the INFORMATION MENU, enter the INFORMATION MENU

from the default display by pressing (<) arrow. Use + or – to move up and down in the menu.

INFORMATION MENU

OP. DATA

SUPPLY LINE / RETURN LINE

Commissioning

Danfoss Heating Solutions VIGFH102