SmartPlate EV Installation, Operation and Maintenance Manual
CHAPTER 5
– OPERATION
OMM-0147_C
• SP-102 • 3/2/2021 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
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of
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OPERATION
5.1 INTRODUCTION
This chapter provides the pre-operational checks, initial start-up and operating procedures for
SmartPlate EV Water Heaters.
CAUTION!
Do NOT operate equipment exceeding design conditions as specified on the nameplate.
SmartPlate EV Water Heaters must never be subjected to pressure greater than the maximum
differential pressure specified on the nameplate.
Sudden rises in pressure may cause leakage or damage to double-wall models heat
exchangers.
5.2 PRE-OPERATIONAL CHECKS, INITIAL START-UP
To prevent a possible over-temperature condition during initial start-up, complete all the
following steps in order.
PRE-OPERATION CHECKS AND INITIAL START-UP Instructions
1. Ensure that external single-phase AC power at
120 VAC/60 Hz
,
220 VAC/50 Hz
or
220
VAC/60 Hz
is properly connected to the ECS II Control Box.
2. Set the Power switch on the front of the Control Box to the
ON
position. This provides
power to the ECS and Control Valve. When power is initially applied, the ECS II
Temperature Controller automatically performs a self-test sequence for approximately
three seconds.
The valve will go through it’s auto-stroke process, which takes up to 1
minute. During this time, the valve will stroke from 0 to 100%.
Proceed immediately to the
next step.
3. 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.
4. Verify that the ECS II Temperature Controller setpoint and Over-Temperature switch alarm
limit have been properly SET per the instructions in Sections 4.3.1:
Setpoint Temperature
Adjustment
and/or 4.3.2:
Over-Temperature Alarm Limit Adjustment
.
5. Slowly
open the isolation valve on the unit’s DHW inlet (see Figure 1.1) to allow water into
the unit.
WARNING!
Fluids must be gradually introduced to the unit.
Failure to do so can cause damage to
heat exchanger plates.
When unit is empty or cold, do not admit hot fluid to the unit suddenly.
When unit is hot, do not shock with cold fluid
.
6. Press the
AUTO/MAN
button on the front panel of the Temperature Controller (Figure
4.3.1) and toggle the display to the MAN (Manual) mode. The MAN indicator will light when
the Manual mode is selected.
