Marey ECO180 - Page 9

5. When connecting the wires to the terminal blocks, make sure the metal wire ends
and the terminal blocks completely touch. Then, tighten the screws securely. Failure
to properly tighten can result in an electrical short and burning of the terminal blocks.
Connect the power at the lower right side of the unit to the terminal block. Each pair
of L1 and L2 should have its own corresponding double polled breaker. Note that the
ECO 180 unit will be connected to two double pole circuit breakers while the ECO
210,240,270 units will be connected to three double pole circuit breakers (Fig. 14).
Fig. 14
ECO180
ECO210, 240, 270
16 17
Reattach the ribbon cable for the LCD panel if disconnected and reinstall the front
cover using the screws and washers previously removed. (Fig. 15).
How the Unit works
1. This unit heats water instantaneously as it flows across the heating elements.
2. The electronic control monitors the flow rate and the incoming water temperature
and then switches on the required number of heating elements to reach the set
temperature.
3. The outlet water temperature will be higher than the setting if the minimum flow
rate isn't met. The outlet water temperature will be lower than the setting if the
maximum flow rate is exceeded.
Using the Water Heater - Operation Instructions
1. Turn on the water and allow it to run through the unit for a few minutes, until water
flow is continuous and all air is purged from the water pipes. Check for and correct
any leaking connections.
Fig. 15