Elecro Engineering In-Line + Swimming Pool Heater Installation Instructions & Operating Manual page 6

P I C
UMP NTERLOCK ABLE
The In-Line + heater is supplied complete with a pump interlock cable that connects into the left
hand side of the heater enclosure, directly below the power in cable entry gland.
To connect simply remove the rubber protection cap from the female connector fitted to the
heater enclosure, insert the male connector supplied on the 5m cable. When fully inserted rotate
the locking nut onto the female connector so that the connector is locked in position.
The end of the cable has 2 wires that need to be connected in order to by-pass the time clock
controlling the swimming pool pump (See suggested wiring diagram below).
NOTE - Do NOT connect the pump interlock cable directly to the swimming pool pump as this
will result in overloading the heaters digital controller.
T S D
IME WITCHING ELAY
To prevent overheating of the switch components within the heater caused by frequent on and off
switching (cycling), the In Line + digital controller has been pre-programmed with a time delay
function. This prevents rapid fluctuations in temperature or velocity from switching the heater on
and off more than once in a two minute period.
The time delay mode is indicated by the flashing LED next to the word HEAT on the digital
display.
D
IFFERENTIAL
When the pool water has reached the required temperature the heater will switch off and will not
switch back on until the water temperature has dropped 0.6˚C. This value is known as the
differential and is also in place to prevent overheating of the switch components caused by
cycling.