Waratahs range of boilers employ a well tried and proven design concept based on the reverse flame combustion.This reverse flame combustion method provides an economical and highly efficient three pass gas flow system. The design incorporates a large pressurized combustion chamber allowing the first two passes of gas to be made in the combustion chamber itself. The scrubbing action of the reversing flame causes  the gases to enter and re-enter the high temperature flame zone many times before making the third and final pass through the smoke tubes. Dimples in the smoke tubes further slow the passage of the combustion gases providing additional efficient heat transfer.

A major criteria in this design is the careful balance between radiant heating surfaces and secondary convection heating surfaces to ensure optimum efficiency when firing either gas or oil.

Because of the use of a pressurized combustion system the boiler operation is completely independent of chimney draught. Chimney sizes are therefore reduced with consequent installation savings.

An extremely easy to clean design as all heating surfaces can be reached easily by opening the burner door. This boiler can be cleaned while hot and still in service completely eliminating the need to shut down the system. An important feature of continued efficient operation, as each millimetre of soot or fouling reduces efficiency by 7%.

Wet back construction with insulated firing door for maximum heat retention to reduce the possibility of condensation in the combustion chamber.

A completely demountable casing system which is easily mounted on the framework forming a permanent part of the boiler.

The boiler top casing is strengthened and braced. The top section is constructed of heavy chequer plate and can serve as a walkway overcoming the most common on site damage problem.

FEATURES

Output Range
100kW to 3000kW - higher outputs on request

Working Pressure
500kPa

Test pressure
750kPa

Insulation
Boiler Shell: 50mm fibreglass insulation with aluminium foil totally encasing boiler shell
Boiler Door: Ceramic Fibre

Casing
1mm steel panels finished in blue enamel
3mm chequer plate top

Door Hinging
Door hinged both sides - handling therefore optional

Firing Equipment
Matching over-fire forced draft pressure jet burner to suit nominated fuel system
Natural Gas/LPG/Oil/Duel Fuel

Electrical Wiring
400 volt 3 phrase 50 cycle standard
Except models WW100 - WW300: 230volt 1 phrase 50 cycle

Valves
Drain valve fitted as standard
Safety valve sized to suit application optional

Control Panel
Standard modular control panel mounted on front of top plate

TECHNICAL DATA