EZ Plate™ Storage Water Heater
15
PV500-64 12/14
7
START-UP AND SHUTDOWN PROCEDURE
1. When placing the unit into operation, open relief valve to purge air from top of tank and begin to fill the tank with
cold water. Check for plumbing leaks. Be sure the tank is completely filled before closing the relief valve.
CAUTION:
To avoid pump damage, do not energize the heater or circulating pump until the tank is full of water.
2. Push control switch, located on the control box, to “ON” to activate the pump and thermostats. Check the pump
for operation; the pump motor should run when operating switch is pushed “ON”. Check operating thermostat
settings.
The operating thermostat is set at the factory at approximately 120°F. The temperature limiting device is factory
set at approximately 200°F.
CAUTION:
To avoid damage to the heat exchanger, gradually introduce boiler water to the heat exchanger.
3. Push the operating switch to “OFF” before opening manual main boiler water supply valve. To prevent thermal
shock, do not admit boiler water to the heat exchanger suddenly when it is empty or cold. Gradually open boiler
water supply valve until all passages of the heat exchanger are filled and slowly bring the heat exchanger up to
temperature.
WARNING: Do not operate heat exchanger under conditions in excess of those specified on nameplate and
ASME data plate. Failure to operate the heat exchanger within the specified design pressure and
temperature can cause damage to the heat exchanger resulting in property damage, personal injury or
death.
4. Push the operating switch to “ON” to energize the pump (and boiler water control valve, if supplied) and to begin
heating the water in the storage tank. Allow the water temperature in the storage tank to rise above the set-point
entered into the programmable electronic operating control thermostat and to de-energize the circulating pump
(and boiler water control valve, if supplied).
5. Then, open a nearby hot water tap(s) to consume hot water from the tank, with is replaced with cold makeup
water, lowering the stored water temperature. Confirm the pump cycles on when the stored water temperature
drops enough to cause the programmable electronic operating thermostat to re-energize the circulating pump.
Close the hot water tap(s) and again allow the stored water temperature to rise and the pump turn off. Repeat as
necessary and check operation of all safety and operating controls.
6. Confirm there is no pulsation or water hammer, since this can cause vibration and strain which can result in
damage or leaks. Contact a water heater or plumbing professional to resolve this situation.
7. Follow the supplemental instructions provided by the heat exchanger manufacturer to retighten the gasket joints
after the heat exchanger has reached temperature to prevent leaks and gasket failures.
8. To shut the water heater down, remove all power from the system and close all boiler water and cold water supply
valves to the unit. If the water heater is removed from service for an extended period of time, the storage tank,
heat exchanger and piping must also be drained completely, to reduce the risk of damage by freezing, biologic
growth or by corrosion from stagnant water conditions.
