Operating Instructions and Installation Instructions

Edition: 02 / 2015 Page 45 / 56

VARMAX TWIN - Installation, Use and Maintenance

VX210 diagram only:

• Domestic hot water menu

Conﬁ gure an Anti-Legionnaires' Disease

function

Anti-Legionnaires' Disease function

(1640)

- - -

Periodic Anti-Legionnaires' Disease

function (1641)

- - -

Day week Anti-Legionnaires' Disease function (1642) - - -

Anti-Legionnaires' Disease setting temperature (1645) - - -

Anti-Legionnaires' Disease function duration (1646) - - -

VARMAX TWIN optimisation:

The Varmax Twin may be optimised as necessary using the parameters in the Flow menu. Refer to

the NAVISTEM B3000 boiler's controller manual for more details.

Diagrams: VX210 / VX220

page 8 / 8

Maintenance optimisation

A maintenance message may be generated that does not set the generator to fault. This maintenance

message may be displayed after the following 3 counters have expired:

• Time since last maintenance (or commissioning): set parameter 7044 to 12 months

(Maintenance / Special regime menu)

• Burner's operating hours (parameter 7040 - menu Maintenance / Special regime menu)

• Number of starts (parameter 7042 - menu Maintenance / Special regime menu)

These last 2 parameters are dependent on the boiler's hydraulic installation. We recommend

using at least parameter 7044 for annual maintenance.

Adjust the DHW release mode DHW release (1620) Timer program 4/

DHW

Line No. Value

• Timer programme 4/DHW menu

Preselection

Preselection (560) - - -

Adjust the timer programming

On / off phases (561...566) - - -

• DHW tank menu

Adjust the over value

Output setting temperature over value (5020) - - -