Seilar roof mounted tank systems save space at ground level and their elegant simplicity make them efficient and reliable. The Seilar M30 Series is a roof mounted, open circuit solar water heater specifically designed to provide economical service in medium to high solar gain areas.

  • Family size
  • 300 Capacity (L)
  • 2Collectors
  • 5yrWarranty

Reduce water heater energy use

by up to 66%^

Pricing after solar incentives:

From $3150 Excluding installation

Key Features

The M30 Series is ingenious in its simplicity. The black polyester powder coated aluminium absorber collects the sun’s heat and transfers it to the water in the 7 risers. Copper is used for the risers for its high thermal conductivity ensuring the maximum amount of heat energy is passed to the water. As the water in the risers is heated, it rises into the tank to be replaced by cooler water from the tank. The solar heated water is then stored ready for use – hot water free from the sun.

The M30 Series has a ceramic lined tank with a protective sacrificial anode. The M30 Free Heat features additional anode protection.

  •  Stylish slimline roof mount design
  •  Can cut water heating energy use by up to 90%^
  •  Reliable, low maintenance operation
  •  Eligible for Government rebates and incentives

 * The suggested price is comprised of RRP less the applicable solar incentive and excluding installation. Solar incentive value applies to 300L system in Zone 3.

^ Energy savings of up to 52% to 90% shown are based on Australian Government approved TRNSYS simulation modelling using a medium load. Savings and incentives will vary depending upon your location, type of Seilar system installed, orientation and inclination of the solar collectors, type of water heater being replaced, hot water consumption and fuel tariff. Maximum financial savings off your hot water bill are achievable when replacing an electric water heater on continuous tariff.

† Seilar Warranty Details: 5/5/5 warranty; 5 year cylinder and collectors supply, 5 year parts, 5 year labour. 10/5/5 warranty, 10 year cylinder and collectors supply, 5 year parts, 5 year labour.

Tech Specs

BLF-300 Solar Specifications

Tank Model M300 Tank M302 System
Storage Capacity 300 Litres 302 litres
Boost Capacity (Electric) 150 litres 150 litres
Weight Empty 71 kg 121 kg
Weight Full 341 kg 417 kg
A-Width 2.43 m 2.48 m
B-Length* 0.51 m 2.53 m

* An Additional 0.9m (35.4in) should be left on all four sides of the installation for safe access and servicing. The M30 and M30 Free Heat systems (if installed with a TRV system) can be installed as a solar preheater with a Seilar inline gas booster water heater. Refer to the Seilar gas booster specification sheet for further details on the gas booster.

M Collectors
Aperture (heating) Area 1.87 m2
Length 1937 mm
Width 1022 mm
Height 77 mm
Capacity 3 litres
Empty 32 kg
Full 34 kg
Working Pressure 1000 kPa
145 psi
Absorber Surface Black polyester powder coat
Absorber Material aluminium
Riser Material copper tube
Tray Material 0.7 mm aluminium
Insulation Material – Base 38 mm polyester blanket
Glass 3.2 mm tempered low iron glass

*Weight includes fittings

Electric Boost Specifications
Heating Unit Type Cooper sheath immersion element
Supply Voltage 240 V -250 V
Recovery Rate (litres/hour) @ 240V and Temperature Rise of:
1.8 8 51 39 31
2.4 10 68 52 41
3.6 15 103 77 62
4.8 20 137 103 83
Water Supply
TPR Valve Setting 1000 kPa
145 psi
ECV* Setting 850 kPa
125 psi
Max. Supply Pressure
With ECV 680 kPa
Without ECV 800 kPa
Water Connections
Cold RP¾/20

*Expansion Control Valve.