Mikrofill ETHOS 70, ETHOS 90, ETHOS 110, ETHOS 130 User Manual

ETHOS 70, 90, 110 & 130
Wall mounted gas fired
condensing boilers

INSPIRED EFFICIENCY

USER MANUAL

Issue 05/08

USER MANUAL|Ethos 70 - 130

Introduction

The Mikrofill Ethos Boiler you have purchased has been designed and manufactured in Britain and represents the
very best in quality and performance,

This User Manual is designed to Guide you through the many user settings available to ensure optimum operating
conditions. Please read this manual thoroughly, careful use of the controls will result in lower greenhouse gas
emissions and reduced operating cost.

The Ethos range of boilers incorporate a fully integrated microprocessor control system
that offers the following user settings

Heating Time Control
Domestic Hot water Time Control (optional HWS sensor required)
Weather Compensation (optional outside sensor required)
Holiday period programming
Night Set Back

The Optimised start facility is pre programmed and requires no user adjustment., all other settings and adjustments
will have been factory set.

Any procedures not described in this user manual should only be undertaken by a competent qualified person,
if in doubt contact Mikrofill technical dept. on 08452 606020

We recommend a regular maintenance regime that should include at least one annual service. Extended warranties
inclusive of annual service are available from Mikrofill Systems Ltd. For fur ther details please contact the
HELPLINE on 08452 606020.

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BOILER MODULE

DHW selection button

Heating selection button

Show information

Settings accept

Chimney sweep function
STB test

Manual mode

Adjust room comfort setpoint
Navigation and settings

Service plug (BSB)

Quit setting

Heating to Comfort setpoint

Heating to Reduced setpoint

Heating to frost protection setpoint

Process running - please wait

Change battery

Burner operating

Info level activated

Programming activated

Heating temporarily
switched off
ECO function active

Holiday function active

Reference to heating circuit

Maintenance / special operation

Error messages

BOILER OPERATION

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Selecting heating module

This setting is used to switch between the different operating modes.
The selection made is indicated by a bar which appears below the
respective symbol.

Automatic mode

Automatic mode controls the room temperature according to the time program.

Characteristics of automatic mode:

Heating mode according to the time program
Temperature setpoints according to heating program “Comfort setpoint“ or “Reduced setpoint“
Protective functions active
Automatic summer / winter changeover (ECO functions)

Continuous operation or

Continuous operation or Continuous operation maintains the room temperature at the selected operating level.

Heating to Comfort setpoint
Heating to Reduced setpoint

Characteristics of continuous operation:

Heating mode with no time program
Protective functions active
Automatic summer / winter changeover (ECO functions)

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BOILER OPERATION

Protection

When using protection, the heating system is off. But it remains protected against frost
(frost protection temperature) provided there is no power failure.
Characteristics of Protection:

Heating off

Temperature according to frost protection
Protective functions active
Automatic summer / winter changeover (ECO functions) and automatic 24-hour heating limit active

Selecting DHW heating mode

The button is used to switch DHW heating mode on and off. The selection made is
indicated by a bar which appears below the respective symbol.

DHW heating

On

The DHW is heated according to the selected switching program.

Off
No DHW heating, the protective function is active.
Triggering is effected by keeping the DHW operating mode button on the
operator or room unit depressed for at least 3 seconds.
It can also be started when:

The operating mode is “Off“

Operating mode changeover acts via H1 or centrally (LPB)

All heating circuits use the holiday function

Adjusting the room temperature setpoint

Turn the setting knob to increase or decrease the Comfort setpoint
For the Reduced setpoint

Press OK

Select operating page “Heating circuit“ and

Adjust the “Reduced setpoint“

If no external sensors are connected, the boiler flow temperature will be determined by using the heating
curve with an external temperature of 0°C. Please see following graph for equivalent temperatures.

After each re-adjustment, wait at least 2 hours, allowing the room temperature to
adapt.