Maximum pipe diameter 108 mm
Direct Fired Water Heaters – We recommend maximum heat rating for different sized units and this also varies
according to whether they are gas fired, oil fired or heated electrically.
Direct fired gas / oil 750 kW
Electrical boiler 100 kW
Flow Rate – Flow rate is immaterial as far as Water-King is concerned. The greater the flow, the more effective
the units tend to be.

Product Data
o Aerial Length 7.0 m
o Aerial Number 4
o Minimum aerial turns 15 Turns
o Frequency range 1 – 10 kHz
o Peak to peak output voltage 82 V
o Power supply required 230 V or 110 V
o Input current 0.08 A
o Power consumption 2 W
o Transformer output Integral to unit
o Power cable length 1.5 m
o Dimensions 280mm x 210mm x 140mm
o Weight 3.00 kg
o Ambient temperature 0 – 70 °C
o Humidity non-condensing 80 %
o Self-diagnostic guard chip No
o BMS output Yes
o IP Rating 65
o Fuse 20 mm 1 Amp.T. (time delay)

Self-Diagnostic “Guard Chip” – Every computer system is prone to malfunction, especially if there is a sudden
variation in the power supply, which can jam the program. Most systems have to reset by manual re-booting.
Water-King units overcome this problem by an additional “Guard Chip” program, which monitors the performance of the main program and resets the system automatically if it detects a variation or system failure.

There is noneed for manual resetting after power outage.
Maintenance – Once installed, the WK4 requires no maintenance.

Lifecycle costs – Running costs are less than £15.00 per annum. The design life is 25 years with a 5-year Manufacturers Warranty