Atag i28C Technical Guide

From the controller Home screen,
press OK.
1
RESET
BACK
19°25/07/18 09:00
80°60°
COMFORT AUTO
Press OK to enter Menu
1.5 bar
OK
Turn the selector wheel to highlight
Complete Menu. Press OK.
2
Frost protection - the danger of frost
If there is danger of frost damage to the CH installation and there is no outside sensor connected, it is advisable to let the pump run
continuously. If the pump is set to continuously this is displayed by a solid frost symbol (frost icon) .
To set pump to continuously on, proceed as follows:
Time program / Manual
Summer / Winter / OFF
Complete Menu
CH Settings is highlighted.
Press OK.
3
CH Settings
DHW Settings
Screen Settings
Turn the selector wheel to highlight
Enable. Press OK.
If the pump is set to continuously
running the frost icon is displayed.
5
Pump continuous running
Disabled Enabled
Turn the selector wheel to highlight
Pump continuous running. Press OK.
4
CH Setpoint Temp
Time program
Holiday function
AUTO function
Pump continuous running
Boiler frost protection
The boiler frost protection is based on the water temperature
measured by the flow T1 sensor in the heat exchanger. When the
measured T1 temperature gets below 8°C in the boiler, the boiler pump
starts for 2 minutes and the 3-way valve will switch 1 minute to CH and
1 minute to DHW. if the T1 temperature has descended < 4°C the pump
will run and the burner will be started on low load for 30 seconds,
when T1 temperature is > 8°C, burner will be switched OFF.
DHW frost protection: if the cylinder temperature is below 8°C the
burner will be started and stops when temperature reaches 12°C
In this mode the frost symbol (frost icon) will flash.
Installation frost protection
For this type of protection an outside sensor must be connected, if no
outside sensor is connected the installation frost protection is not active.
When the outside sensor measures a temperature between 1.5°C
and -4°C the boiler pump will come on for 10 minutes every 6 hours.
When the outside temperature gets to -5°C or lower the pump will run
continuously.
When the outside temperature gets above 1.5°C again, the installation
frost protection is o. In this mode the frost symbol (frost icon) will be
continuously on solid.
THERE ARE TWO TYPES OF FROST PROTECTION INTEGRATED IN THE BOILER, FROST PROTECTION OF THE BOILER AND FROST
PROTECTION OF THE INSTALLATION.
15

Atag i28C Specifications

General

Brand	Atag
Model	i28C
Category	Boiler
Language	English