VOKERA Unica HE, UNICA 32 BHE User Instructions
THESE INSTRUCTIONS
TO BE RETAINED
BY USER
Vokèra is a licensed member of the Benchmark scheme
which aims to improve the standards of installation and
commissioning of domestic hot water systems in the UK.
Unica HE
High efficiency combi boiler
Users
Instructions
2
Dear Customer
Your Vokera Mynute HE 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 section
● 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.
This booklet is an integral part of the appliance. It is therefore necessary to ensure that the booklet is handed to the
person responsible for the property in which the appliance is located/installed. A replacement copy can be obtained
from Vokera customer services.
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 (UK only) 3
1.5 How does it work? 3
1.6 Dimensions 3
1.7 Clearances required 3
1.8 Frost protection system 3
1.9 Status indicators 3
1.10 Digital display 4
Getting started Page
2.1 Before switching on 5
2.2 Appliance controls 5
2.3 Lighting the boiler 5
2.4 Adjusting the CH temperature 5
2.5 Adjusting the DHW temperature 5
How to... Page
3.1 Top-up the system 6
3.2 Reset the appliance 6
3.3 Shut down the system for short periods 6
3.4 Shut down the system for long periods 6
3.5 Care for the appliance 6
What if... Page
4.1 I suspect a gas leak 7
4.2 I have to frequently to top-up the system 7
4.3 The RED fault light is on 7
4.4 The appliance is due its annual service 7
4.5 I need to call an engineer 7
Setting the Vokera… Page
5.1 Mechanical clock 7
INTRODUCTION
3
THINGS YOU SHOULD KNOW
1.1 GAS APPLIANCES
Gas Safety (Installations and Use) Regulations
(UK).
In the interests of your safety and that of 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 (UK only)
A logbook section can be found at the rear of the
appliance installation booklet. This important
document must be completed during the installation/
commissioning of your boiler. All CORGI registered
installers carry a CORGI ID card, and have a
registration number. These details should be
recorded in the Benchmark logbook section within
the installation booklet. You can check your
installers details by calling CORGI direct on 01256
372300. 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 Unica HE boiler supplies heated water to your
radiators and hot water to your hot water taps.
The central heating is controlled via a time clock
and any thermostats that your installer may have
fitted. The boiler will light when it receives a
request from the time clock via any thermostat
that may be installed, or whenever a hot water
outlet (tap) is opened.
Your Unica HE boiler 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 DIMENSIONS
1.7 CLEARANCES REQUIRED
ABOVE
BELOW
LEFT SIDE
RIGHT SIDE
FRONT
150 mm
150 mm
50 mm
12mm
600 mm
1.8 FROST PROTECTION SYSTEM
The Unica HE is equipped with a built-in frost
protection system, this enables the boiler to override the time controls – even if switched off – and
operate the burner and/or pump, should the
temperature drop below 60C for the main and below
4°C for the DHW line. In particular the burner will
be in ON status until the main temperature reaches
35°C for CH appliance and 55°C for DHW appliance.
Unica 28HE
HEIGHT 780mm
WIDTH 400mm
DEPTH 358mm
Unica 32/36HE
HEIGHT 780mm
WIDTH 450mm
DEPTH 358mm
Please note that the frost protection system is
designed to protect the appliance only, should frost
protection be required for the heating system,
additional controls may be required.
When the frost protection system has been
activated, ‘AF’ is displayed on the appliance LED
display (see below).
NOTE
The frost protection system is reliant on the appliance having a permanent electrical supply, and
being in a non-fault condition.
1.9 APPLIANCE STATUS INDICATORS
Your boiler is equipped with 2 status LED
indicators, the Green LED indicates that the flame
is present, whilst the Red LED indicates the
appliance has detected a fault.
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