High Impact cast aluminium heavy duty terminal box in epoxy powder finish Certified weatherproof to IP 65 Two conduit entries (standard 1 x 25mm) Heavy duty brass heads screwed 2” or 2 ¼” BSP Suitable for working pressures of 36 psi (2.5 bar)
The Backer comprehensive range of water immersion heaters are suitable for all commercial and industrial tanks and cylinders. They are supplied with an adjustable setting stem type thermostat to provide an automatically controlled hot water service.
DESIGN FEATURES
The element sheath is made from Incoloy or Titanium which are the best corrosive resistant materials available for immersion heater applications.
High Impact cast aluminium heavy duty terminal box in epoxy powder finish
Terminal box is designed to give excellent access for wiring. The box can be rotated through 360°C to allow the most favourable position for the conduit connection to be chosen.
Conform to Electro Magnetic Compatibilty regulations (EMC), Electrical equipment (safety) regulations, Low Voltage Directive (LVD), and CE marking regulations.
When selecting an immersion heater the following should be taken into account:
The optimum stratification is obtained by mounting the heater horizontally at the bottom of the tank. Choosing the longest immersed length that can be accommodated in the vessel will keep the watts density as low as possible, which will assist in the life expectancy of the heater. We would not advise the mounting of heaters in deep neck rings as localised boiling will occur. The vessel and associated pipework should be well insulated to conserve energy and reduce running costs. This can be further enhanced by the use of suitable controls in conjunction with peak tariffs.
2” STANDARD SCREWED IMMERSION HEATERS
KW CAT NO PHASES IMMERSED LENGTH Inches mm
1 SYA111 1 11 280
2 SYA216 1 16 405
3 SYA311 1 OR 3 11 280
3 SYA330 1 OR 3 30 760
4 SYA411 1 OR 3 11 280
4 SYA416 1 OR 3 16 405
6 SYA616 1 OR 3 16 405
6 SYA630 1 OR 3 30 760
6 SYA642 1 OR 3 42 1065
9 SYA918 1 OR 3 18 460
9 SYA923 1 OR 3 23 585
9 SYA936 1 OR 3 36 915
2 1/4” STANDARD SCREWED IMMERSION HEATERS
LOADING (kW) CATLALOGUE NO PHASES IMMERSED LENGTH
Inches mm
1 SYB111 1 11 280
2 SYBR211 1 11 280
3 SYB311 1 OR 3 11 280
3 SYB330 1 OR 3 30 760
4 SYB411 1 OR 3 11 280
4 SYB416 1 OR 3 16 405
4 SYB428 1 OR 3 28 710
6 SYB616 1 OR 3 16 405
6 SYB630 1 OR 3 30 760
6 SYB642 1 OR 3 42 1065
7 SYB724 1 OR 3 24 610
9 SYB918 1 OR 3 18 460
9 SYB923 1 OR 3 23 585
9 SYB936 1 OR 3 36 915
12 SYB1224 3 24 610
12 SYB1232 3 32 815
18 SYB1836 3 36 915
18 SYB1844 3 44 1120
Type Number KEY S = Screwed Y = INCOLOY R = DOUBLE HAIRPIN
A = 2” BSP B = 2 ¼” BSP Number kW and Length