VOKERA Mynute 28e, Synergy User Instructions

Users
Instructions

THESE INSTRUCTIONS
TO BE RETAINED
BY USER

Mynute

28e

2

Mynute

Dear Customer

Your Mynute boiler has been designed to meet and exceed the very latest standards in gas central heating technology,
and if cared for, will give years of reliable use and efficiency.
Please therefore take some time to read these instructions carefully.

Do’s and don’t’s

● Do ensure that the system pressure is periodically checked

● Do ensure that you know how to isolate the appliance in an emergency

● Do ensure that you are familiar with the appliance controls

● Do ensure that your installer has completed the appliance log book

● Do not attempt to remove the appliance casing or gain internal access

● Do not hang clothes etc. over the appliance

● Do not forget to have the appliance serviced annually

Contents

Introduction Page

Dear customer 2
Do’s and don’t’s 2

Things you should know Page

1.1 Gas appliances 3

1.2 Electrical supply 3

1.3 Guarantee registration card 3

1.4 Appliance log book 3

1.5 How does it work? 3

1.6 Additional features 3

1.7 Dimensions 3

1.8 Clearances required 3

Getting started Page

2.1 Before switching on 4

2.2 Appliance controls 4

2.3 Lighting the boiler 4

How to... Page

3.1 Top-up the system 4

3.2 Reset the appliance 4

3.3 Understand the diagnostic fault codes 5

3.4 Shut down the system for short periods 5

3.5 Shut down the system for long periods 5

3.6 Care for the appliance 5

What if... Page

4.1 I suspect a gas leak 5

4.2 I frequently have to top-up the system 5

4.3 The status led is flashing red 5

4.4 The appliance is due its annual service 5

4.5 I need to call an engineer 5

Setting the Vokera Page

5.1 Mechanical clock 6

5.2 Digital clock 7

5.3 Programmer 6

INTRODUCTION

Fig. 1

1 Mode selector switch

2 Digital display

3 Status LED

1

2

3

4

6

5

4 Variable thermostat

5 Clock aperture

6 Pressure gauge

3

Mynute

THINGS YOU SHOULD KNOW

1.1 GAS APPLIANCE

Gas Safety (Installations and Use) Regulations.
In the interests of your safety and that of the
others it is a legal requirement that all gas
appliances are installed and correctly maintained
by a competent person and in accordance with
the latest regulations.

1.2 ELECTRICAL SUPPLY

Please ensure that this appliance has been
properly connected to the electrical supply by
means of a double pole isolator or un-switched
socket, and that the correct size of fuse (3 amp)
has been fitted.

Warning: this appliance must be earthed!

1.3 GUARANTEE REGISTRATION CARD

Please take the time to fill out your guarantee
registration card. The completed warranty card
should be posted within 30 days of installation.

1.4 APPLIANCE LOG BOOK

A log book is supplied with the boiler. This important
document must be completed during the installation/
commissioning of your boiler. Failure to install and
commission the appliance in accordance with the
manufacturers instructions may invalidate the
warranty. This does not affect your statutory rights.

1.5 HOW DOES IT WORK?

Your Mynute boiler is a central heating boiler,
which supplies heated water to your radiators
and hot water cylinder.

It is controlled by the time clock or programmer
and any thermostats that your installer may have
fitted.

The Mynute lights electronically and does not
have a pilot light. In the unlikely event of a fault
developing with your boiler, the supply of gas to
the burner will be terminated automatically.

1.6 ADDITIONAL FEATURES

Your Mynute boiler includes some of the latest
features that have been designed to ensure
continued safety and reliability of the appliance.
These include:

● appliance frost protection

● pump-spin

● diagnostic fault codes

● LED status indicator

FROST PROTECTION

Your Mynute will automatically operate to minimise
the risk of frost damage to the boiler itself. The
frost protection device will be disabled should the
power supply to the boiler be disrupted.

PUMP-SPIN

When the boiler has not been used for more than
24 hours, the pump is energised for a few seconds

1.7 DIMENSIONS

HEIGHT

WIDTH
DEPTH

820 mm
450 mm
355 mm

to ensure that it does not stick or jam. The pump­spin device will be disabled should the power
supply to the boiler be disrupted.

DIAGNOSTIC FAULT CODES

In the unlikely event of a fault developing, the
boiler displays a unique fault code that helps
identify where the fault lies.

LED STATUS INDICATOR

The Mynute is equipped with a LED status indicator
that gives a visual indication of whether the boiler
is working normally or has developed a fault.

1.8 CLEARANCES REQUIRED

ABOVE

BELOW

SIDES

FRONT

150 mm
150 mm

12 mm

600 mm

4

Mynute

GETTING STARTED

2.1 BEFORE SWITCHING ON

Before switching the appliance on, please
familiarise yourself with:

● how to isolate the appliance from the gas,

water and electricity supplies;

● how to check and top-up - if necessary - the

system water pressure;

● the time clock or programmer;

● any external thermostats and their functions;

● the appliance controls.

2.2 APPLIANCE CONTROLS (see fig. 1)

The appliance controls are concealed behind the
front flap. To gain access to the controls simply
press the top centre of the flap, release, and pull
downward. The appliance has a mode switch,
variable thermostat, system pressure gauge, and
an aperture for an integral clock or programmer.
The mode switch has three positions:

● RESET

● OFF

● ON

The variable thermostat allows you to set the
temperature of the water to your radiators and hot
water cylinder (not the hot water to your taps!)
between 40°C (min) and 80°C (max).

The pressure gauge shows the current pressure
of the system, the gauge should be set between
1 and 1.5 bar. When the appliance is operating
the gauge may rise or fall slightly, this is quite
normal. The minimum permissible level for the
safe and efficient operation of the appliance is 0.5
bar. Should the pressure fall below 0.5 bar, the
boiler shuts off automatically.

Depending on the type of controls specified by
your installer you may have an integral Vokera

time clock or programmer fitted to the appliance,
if so, instructions can be found on page 6. If an
external time clock or programmer has been
fitted, please refer to the instructions supplied
with such.

2.3 LIGHTING THE BOILER

Ensure the gas and electrical supply to the boiler
are turned on.

Turn the mode switch to the “on” position. The
status indicator should be “green” if the status
indicator is flashing “red” refer to 3.2.

Refer to the particular instructions for the type of
programmer or time clock fitted and ensure there is
a demand for heating and/or hot water. If there is a
room thermostat and/or hot water cylinder
thermostat you should ensure these are also calling
for heat.

When there is a demand for heating and/or hot
water via the above controls, the boiler will go
through an ignition sequence, whereby the burner
will light.

If the appliance fails to ignite during the ignition
sequence, allow a period of two minutes before
re-setting.

To adjust the output temperature of the appliance
turn the thermostat knob clockwise to increase or
anti-clockwise to decrease.

When the appliance reaches the set temperature,
the burner will go off for minimum period of
approximately 3 minutes.

When the programmer/time clock or external
thermostats heating request has been satisfied,
the appliance will switch off automatically.

HOW TO...

3.1 HOW TO TOP-UP THE SYSTEM PRESSURE
(see fig. 2)

The system pressure must be checked periodically
to ensure the correct operation of the boiler. The
needle on the gauge should be reading between
1 and 1.5 bar when the boiler is in an off position
and has cooled to room temperature.If the
pressure requires ‘topping-up’ use the following
instructions as a guide.

● Locate the filling valve connections (external to

the boiler).

● Attach the filling loop to both connections.

● Open the filling valve slowly until you hear

water entering the system.

● Close the filling valve when the pressure gauge

(on the boiler) reads between 1 and 1.5 bar.

● Remove the filling loop from the connections.

3.2 HOW TO RESET THE APPLIANCE

When the led status indicator is flashing red, the
appliance will require to be reset manually. Using
the mode switch, turn it two clicks to the left (reset
position) then turn it back to the “on” position (see
also 3.3). Allow a period of two minutes to elapse
before turning the mode switch to the reset
position.

IMPORTANT

If the appliance requires to be reset frequently,
it may be indicative of a fault, please contact
your installer or Vokera Customer Services for
further advice.