Operating Instructions and Installation Instructions

VARINO GRANDE 350 - 600

We reserve the right to make changes to dimensions and construction 23 Edition 10.07.2015

6 Desired temperature reached, normal switch off performed via switching hysteresis.

(Active with "fixed value" control, "analog desired value" control or with integrated

heating controller).

8 No or too small gas pressure present, start process was cancelled; condensing unit

checks in 5 min. intervals whether gas pressure is present.

9 Boiler switched off due to exceeding of the electronic temperature monitoring.

A Condensing unit switched off via burner switch on control panel or an external safety

device connected to the boiler control panel has interrupted the control circuit, or the

temperature monitor has been set too low.

C The oxygen sensor is calibrated

d Burner is gauged (can only be reset by service personnel)

E (Without flashing) no signal from oxygen sensor

H Temperature of the oxygen sensor is being checked

9.3. Parameter level

Entry by pressing the PROG key once. The entry is confirmed by lighting up of the point after the 1

digit. The

first digit shows the step number and the last two figures the set value.

Step Parameter Setting range

1 Maximum boiler temperature TK in °C 20 to 100°C

2 Min. external temperature TA in °C - 20 to 5°C

3 Min. boiler temperature TK in °C 10 to 60°C

4 Max. external temperature TA in °C 5 to 15°C

Parameters 2-4 are only active with "fixed value" control

Parameter values are set with the keys + or -. The modified value must be confirmed with the OK key. Switching

to the next parameter takes place via the ►> key. When leaving the parameter level (by pressing the PROG key)

the set values are accepted and overwritten in the EEPROM.

100

-20 -15 -10 -5 0 5 10 15

TA (°C)

TK (°C)