Product Description

Alpha Evoke 28NX Combination Boiler

Model: 3.033114

Heat your home and enjoy instant hot water with the Alpha Evoke 28NX Combination Boiler. This compact gas combi boiler delivers 28kW for hot water and up to 26.1kW for central heating.

The boiler measures 712mm high, 440mm wide and only 255mm deep. Therefore, it suits homes where installation space is limited. In addition, its stainless-steel heat-exchanger coil provides strength and long-term reliability.

The Alpha Evoke 28NX also includes a Grundfos hydroblock and variable-speed pump. As a result, the boiler can adjust its operation to meet the needs of your heating system.

Furthermore, the boiler supports weather compensation, OpenTherm and Alpha BUS controls when used with suitable accessories.

Warranty: Alpha supplies this boiler with a seven-year manufacturer’s warranty. However, installation, registration and servicing conditions apply.

Key Features

• 28kW hot-water output
• Central-heating output up to 26.1kW
• Hot-water flow rate of 12.1 litres per minute at a 35°C rise
• Compact 712mm x 440mm x 255mm design
• Stainless-steel heat-exchanger coil
• Grundfos hydroblock and variable-speed pump
• Adjustable central-heating flow temperature
• Heating output can be set to suit the system
• Digital operating and fault display
• Weather-compensation compatible
• OpenTherm and Alpha BUS compatible
• Removable push-fit flue connection
• Seven-year manufacturer’s warranty, subject to conditions
• Natural-gas combination boiler
• Manufacturer part number: 3.033114

Alpha Evoke 28NX Specification

• Download the Alpha Evoke NX Information Sheet
• Download the Alpha Evoke NX Installation Instructions
• Brand: Alpha
• Range: Evoke NX
• Boiler type: combination boiler
• Fuel: natural gas
• Hot-water output: 28kW
• Maximum central-heating output: 26.1kW
• Hot-water flow rate: 12.1 litres per minute at a 35°C rise
• Modulation range: 1:6
• Height: 712mm
• Width: 440mm
• Depth: 255mm
• Lift weight: approximately 31.2kg
• Water-heating energy class: A
• Flue connection: 60/100mm concentric
• Maximum horizontal flue length: 12 metres, subject to the installation design
• Maximum vertical flue length: 14 metres, subject to the installation design
• Manufacturer part number: 3.033114

What Is Included?

• 1 x Alpha Evoke 28NX combination boiler
• Standard boiler fittings supplied by Alpha
• Installation, operating and servicing documents

Please note: This boiler does not include a flue, timer, heating controls or extra installation parts unless the selected product package clearly states otherwise.

Heating and Hot-Water Performance

The Alpha Evoke 28NX heats water when you turn on a hot tap. Therefore, you do not need a separate hot-water cylinder.

Its 28kW hot-water output provides a flow rate of up to 12.1 litres per minute at a 35°C rise. Meanwhile, the boiler supplies up to 26.1kW to the central-heating system.

The installer can also adjust the heating output to suit your home. As a result, the boiler can work more closely with the needs of the property.

However, the correct boiler size depends on several factors. These include the size of the home, insulation levels, number of radiators and hot-water demand. Therefore, always ask a heating engineer to check the required boiler output before you order.

Compact Boiler Design

The Alpha Evoke 28NX measures 712mm high, 440mm wide and only 255mm deep. As a result, it provides a useful choice for kitchens, utility rooms and other areas with limited space.

In addition, the front-access design helps the engineer reach the main parts during servicing. The removable push-fit flue connection also makes it easier to create a suitable horizontal or vertical flue route.

Simple Boiler Controls

The front control panel allows the user to change the heating and hot-water temperatures. It also shows the current operating status and any fault codes.

The boiler includes summer, winter and standby settings. Hot water also takes priority when you open a tap. Therefore, the boiler can respond quickly when you need hot water.

Compatible Heating Controls

• Digital operating display
• Built-in fault information
• Separate heating and hot-water controls
• Weather-compensation connection
• OpenTherm control compatibility
• Alpha BUS control compatibility
• Summer, winter and standby modes
• Hot-water priority

Compatible controls and outside sensors are available separately. Therefore, ask your installer to choose controls that suit the boiler and your heating system.

Stainless-Steel Heat Exchanger

The Alpha Evoke NX uses a stainless-steel heat-exchanger coil within a strong thermoplastic casing. This design reduces the boiler’s weight while keeping the strength of stainless steel.

The boiler also includes a Grundfos hydroblock with a Delta T variable-speed pump. Therefore, it can change the water flow to match the needs of the heating system.

Seven-Year Alpha Warranty

The Alpha Evoke 28NX comes with a seven-year manufacturer’s warranty. However, Alpha’s current terms and conditions apply.

A Gas Safe registered engineer must install and commission the boiler. In addition, the installer or homeowner must register it within Alpha’s stated time limit.

You must also arrange regular servicing in line with Alpha’s instructions. Therefore, keep your purchase invoice, registration details, Benchmark checklist and annual service records.

Installation Requirements

• Use a Gas Safe registered engineer
• Check the gas supply and working pressure
• Size the heating system correctly
• Clean and treat the heating system
• Select a suitable Alpha flue separately
• Fit the correct heating controls
• Install the condensate drain correctly
• Complete the Benchmark commissioning checklist
• Register the boiler for the manufacturer’s warranty

A qualified engineer must design and install the boiler and flue system. Therefore, do not attempt to fit or commission this gas boiler unless you hold the correct Gas Safe qualifications.

Check Before Ordering

• Confirm that the 28kW output suits your home
• Check the incoming mains-water pressure and flow rate
• Confirm that you require the natural-gas model
• Select the correct Alpha flue kit
• Check whether you need flue extensions or bends
• Choose a suitable timer or heating control
• Check the delivery and access details
• Arrange installation with a Gas Safe registered engineer

Why Buy from SNH Tradecentre?

SNH Tradecentre supplies boilers, heating controls, flue parts and installation accessories to homeowners and professional installers.

Our team can help you check product codes and find the extra parts required for your installation. As a result, you can order the boiler, flue and controls together with greater confidence.

You can order for delivery or collect from our trade counter in Birchington, Kent. For product or stock enquiries, call 01843 842727.