3
UNICA BHE
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 regula-
tions.
1.2
ELECTRICAL SUPPLY
Please ensure that this appliance has been prop-
erly 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 BHE 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 BHE 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
12 mm
25 mm
600 mm
1.8
FROST PROTECTION SYSTEM
The Unica BHE is equipped with a built-in frost
protection system, this enables the boiler to over-
ride the time controls – even if switched off – and
operate the burner and/or pump, should the
temperature drop below 6
0
C 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 BHE
HEIGHT
785mm
WIDTH
553mm
DEPTH
268mm
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 ap-
pliance 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.
