SZS Series Boiler

Gas/Oil Fired Water Tube Steam Boilers. The SZS is a complete range of water tube steam boilers with pressure ratings starting from 12.5 bar. The SZS range includes saturated and superheated steam options and can be custom designed to suit your application.
High quality European manufactured Oilon burners offer superior control and efficiency to minimise fuel costs.
Tube walls are manufactured using a CNC welding and bending process to ensure superior quality.
Triple layer insulation system providing surface temperatures under 50°C.

Large heating surface to maximise heat exchange.

Furnace access and explosion doors ensure our boilers are both easily accessible and well protected. 

Durable outer steel casing designed to meet New Zealand’s high seismic requirements.

Ten Key Reasons Why You Should Choose An SZS Series Boiler

Our SZS series boilers offer innovative design, maximising efficiency. These water tube boilers incorporate a furnace with a large surface area to maximise thermal heat transfer. The standard boiler design allows for a super heater to be fitted easily should superheated steam be required for your process.

The SZS range of boilers are designed and manufactured to the required standard in New Zealand (ASME) under an ISO9001 quality management system. In addition, third party inspection, by a Worksafe approved body, is also carried out to independently verify quality during and after the manufacturing process.

Our SZS series water tube steam boilers provide a gross efficiency up to an unprecedented 95% for boilers fitted with a condenser option. A large combustion space with increased surface area provides superior energy transfer from the combustion gas into the water through the wall tubes before entering the generating tube bank.

The superior triple layer insulation system on the SZS series boilers comprises a ceramic fibre layer attached to the shell of the boiler and covered by a thick silver reflective blanket to reflect lost heat back inward, encompassed by a thick layer of fibre glass insulation and then clad in an outer steel casing. This insulation reduces radiant and conductive losses to atmosphere, achieving optimal efficiency and exterior boiler surface temperatures typically below 50°C.
Each of the SZS boiler models incorporates a large steam space and steam scrubber, providing high quality steam even under varying loads. This high quality steam eliminates unnecessary condensate in the steam, ensuring superior heat exchange in the process equipment, reducing overall fuel consumption and scaling.
Removable man doors on each end of the steam drum, water drum and furnace allow easy access to the water and fire sides of the boiler for inspection, cleaning and maintenance.
Optimal boiler efficiency provides superior boiler performance over conventional designs, reducing the amount of fuel required to achieve the same boiler output. This reduces the impact on the environment and the overall ongoing operational costs associated with the boiler. Flue gas economisers and condenser options are available to further enhance the performance of our package boilers reducing fuel consumption, operating costs and CO2 emissions even more.

We use high quality European equipment on our package boilers. These include Spirax Sarco valving and control equipment, Oilon burners, complete with Siemens LMV5x digital burner management system and multistage Grundfos feed water pumps. The quality of this equipment ensures superior control and ongoing reliability.

Our market leading package boiler control system is modelled around a PLC with large colour touchscreen interface. A Siemens LMV5x digital combustion manager provides accurate and repeatable burner control and maximum efficiency. Spirax Sarco equipment is utilised for low water level protection and TDS blow down control. Our Oilon burner range provides maximum combustion efficiency, operating at low excess air levels. In addition, we can offer variable speed combustion fan control and automated oxygen trim to further optimise electricity and fuel savings for the life of the boiler. The control system provides detailed boiler fault descriptions, trending and testing functions. A cellular modem provides the ability to contact responsible persons assigned to the boiler via cell phone or pager, with a description of the actual fault when required.

The quality of our installations is second to none. Commissioning is carried out to a high standard with an emphasis on precise control and superior efficiency. Boiler training is provided to ensure those responsible for the ongoing supervision of the boiler are trained to protect your investment and ensure it is operated safely and efficiently. EPS follow this up with market leading after sales technical and service support to our customers.