Installation, 13 specific adjustment, 1 heating circuit adjustment – Glow-worm Ultracom2 cxi User Manual

Page 30: 2 appliance technical settings and parameter list

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0020112601_02 - 10/12 - Glow-worm

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INSTALLATION

13 Specific adjustment

13.1 Heating circuit adjustment

It may be necessary to adjust the by-pass to the design of the

system. The boiler is delivered pre-set open 1/2 turn (1).

1

Key

1 Screw for by-pass

• Depending on the design of the system the by-pass may

need further adjustment. It is adjusted clockwise to close and

anti-clockwise to open. This should be balanced to ensure

that it operates if the pump output is adjusted.

Output/pressure curve Ultracom

2

24cxi

60
50
40
30
20
10

0

500

1000

1500

4

2

1

3

A

B

Key

A Available pressure between heating flow and return (kPa)

b Heating circuit flow rate (l/h)

1 Speed min, bypass closed

2 Speed max, bypass closed

3 Speed max, bypass middle position

4 Speed max, bypass opened

Output/pressure curve Ultracom

2

30cxi

60
50
40
30
20
10

0

500

1000

1500

A

B

2

4

1

3

Key

A Available pressure between heating flow and return (kPa)

b Heating circuit flow rate (l/h)

1 Speed min, bypass closed

2 Speed max, bypass closed

3 Speed max, bypass middle position

4 Speed max, bypass opened

Output/pressure curve Ultracom

2

35cxi

60
50
40
30
20
10

0

500

1000

1500

A

B

2

1

3

4

Key

A Available pressure between heating flow and return (kPa)

b Heating circuit flow rate (l/h)

1 Speed min, bypass closed

2 Speed max, bypass closed

3 Speed max, bypass middle position

4 Speed max, bypass opened

13.2 Appliance technical settings and

parameter list

The access to the boilers technical data allows you to adjust the

boiler to the exact system requirements.

Note: the heating power decrease has no effect on the domestic

hot water power.

13.2.1

Installation settings

• Press for more than 7 seconds on the button

to

access the configuration menu. The screen displays "0".

• Press 4 times on the button under the symbol .

The screen displays "96". This is the installer's password.

• Press on

to validate. The screen displays the

parameter "00" and its value "XX”.

• Press on button or under the symbol to access the

parameter to modify.

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