VOKERA Unica 28HE User Manual

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 Balcony boiler
High efficiency combi boiler
Users
Instructions
G.C. NUMBER
UNICA 32 BHE N° 47-094-99
0694
0694BR1207

VOKERA Unica 28HE Specifications

General

Model	Unica 28HE
Category	Boiler
Type	Condensing
Output	28 kW
Fuel Type	Natural Gas
Mounting	Wall Mounted
Efficiency Rating	A
ERP Rating	A
Max Working Pressure	3 bar
Flow Rate	11.4 l/min

Summary

Things You Should Know

Gas Appliances

Ensures compliance with UK Gas Safety regulations for safe installation and upkeep.

Electrical Supply

Frost Protection System

Appliance Status Indicators

Digital Display

Getting Started

Appliance Controls

Lighting the Boiler

Adjusting the Heating Temperature

Adjusting the Hot Water Temperature

How To...

How to Top-Up the System Pressure

Detailed steps for checking and topping up system pressure using the filling valve.

How to Reset the Appliance

Instructions on how to reset the appliance when the Red LED fault indicator is on.

What If...

What if I Suspect a Gas Leak

Critical steps: turn off gas supply, contact installer or gas supplier.

What if I Have Frequently to Top-Up the System

Advise to contact installer if system pressure needs frequent topping-up, indicating a leak.

What if the Reset Light is On

Explains Red LED indicates fault, auto shutdown, and manual reset requirement.

What if the Appliance is Due its Annual Service

What if I Need to Call an Engineer

Advice on contacting Vokera Customer Services or an engineer with necessary details.