Technical data
CONNECTIONS – ELECTRICAL
ASSEMBLY OF ADJUSTER MECHANISM ON OPTIMA MODEL
When the front cover has been removed, reassemble as follows:
• Remove the knob from the front
cover by depressing the locking
tabs on the inside of the front cover.
• Turn the thermostat to the lowest
temperature (refer to “Temperature
Adjustment” on page 5).
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• Fit the front cover.
• Insert the connector shaft through
the hole into the thermostat adaptor
slots.
• Align the knob slots over the ‘T’ drive on the connector shaft, with the dial at
the lowest setting – a firm push with the hand on the knob front face will
engage the locking tabs.
WIRING DIAGRAM TWIN ELEMENT ELECTRIC WATER HEATERS
NON-SIMULT
ANEOUS OPERATION OFF-PEAK CONNECTION
Electrical Circuit for Twin Element Models – Robertshaw “EWT” Thermostats










