Aerco SmartPlate User Manual download pdf (Page 36)

SmartPlate Installation, Operation & Maintenance Manual

CHAPTER 5 – OPERATION

Page 36 of 138 AERCO International, Inc.  100 Oritani Dr.  Blauvelt, NY 10913 OMM-0069_0E

PRI: 11/26/2013 Phone: 800-526-0288 SP-100

5.3 INITIAL START-UP

In order to prevent a possible over-temperature condition during initial start-up, AERCO

recommends that the following steps be performed in the order specified:

1. With the ECS/SP Control Box door open, set the POWER switch on the right side of the

box to the ON position. This will provide power to the complete ECS and MXG-461

Control Valve. When power is initially applied, the ECS/SP Temperature Controller

automatically performs a self-test sequence for approximately three seconds. Proceed

immediately to the next step.

2. Upon completion of the self-test, the Temperature Controller will show the present water

heater outlet temperature in the upper display and the setpoint temperature in the lower

display.

3. Press the AUTO/MAN button on the front panel of the Temperature Controller (Figure 3-3)

and toggle the display to the MAN (Manual) mode. The MAN indicator will light when the

Manual mode is selected.

4. When in the Manual mode, the upper display will continue to show the current outlet water

temperature of the heater. The lower display will show the position of the MXG-461

Control Valve Actuator in %. When the Manual mode is initially selected, the lower display

will show 0%, indicating that the Control Valve is fully closed.

5. Open the stop valve in the building recirculation system, if employed.

6. Open the isolation valve in the hot water outlet line. Connect a hose to the field-piped

“Hose Connection” (see Piping Diagrams in Appendix C) or open several hot water

fixtures in the building to ensure water flow through the heater.

7. Slowly open the isolation valves in the boiler water inlet and boiler water outlet

connections of the heater.

8. Using the ▲ arrow button, set the MXG-461 Control Valve to the 10% position and

monitor the outlet water temperature of the heater.

9. Next, continue to increase the valve “open” position in 5% increments until the water

temperature starts to increase at a moderate rate.

10. When the outlet water temperature has increased to within 20°F of the desired setpoint,

press the AUTO/MAN button and toggle the Temperature Controller to the AUTO mode.

The AUTO indicator will light and the MAN indicator will go off. When in the AUTO mode

the upper display will continue to show the outlet water temperature of the heater. The

lower display will show the selected setpoint temperature.

11. When in the AUTO mode, the ECS will stabilize at the selected setpoint temperature (see

Chapter 3). Once stabilized, the ECS/SP is set for unattended operation with no further

operator intervention.

12. Check the boiler water differential pressure gauge (Figure 1-1) to ensure that the indicator

dial is in the green area. If the dial moves to the red or yellow area, refer to Chapter 6 for

Corrective Maintenance.

13. Close the hose connection or hot water fixtures opened in step 6.

14. During start-up of Double-Wall Models, there may be some evidence of leakage prior to

the plates and gaskets reaching their working temperature. If leakage continues, check to

ensure that dimension "A" in Figure 5-1 is correct within ±1% of the value shown on the

channel plate assembly instructions. (Refer to Chapter 8, paragraph 8.7.1 for details).

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