18
The auxiliary thermostat should be set ten degrees (10°) above the temperature at
which the individual thermostats are set. Each unit is equipped with one auxiliary
high temperature thermostat that is recognizable by the red dial.
The high limit thermostat is factory preset at 205 degrees (205°) and is not user
adjustable.
3.
Slowly open the manual shutoff valve on the cold water inlet line, checking to
assure that there are no leaks at the valve or any joints. During initial filling, hold
the pressure / temperature relief valve open to allow air to bleed out of the tank.
This will speed the filling process.
During initial filling, the
power source must remain off until water completely
covers the heating elements to prevent "burn out"
. Therefore, if so equipped,
the low water cut off and water feeder or pump controller will be inactive, making
the process completely manual. The tank should be filled until the cold water
begins to flow from the open relief valve.
As the tank is filling, inspect the mating areas between the tank and each heating
element for leakage. These can be viewed within the electric control cabinet. If a
leak is detected, shut off the cold water inlet valve and check the tightness of the
bolts used to mount the heating element flange(s) to the tank. If, after tightening
any loose bolts, water continues to leak, contact
CEMLINE CORPORATION
for
assistance.
If the unit has filled to the correct level, and no leaks are detected, close and lock
the door to the electric control cabinet, and proceed to the next step.
4.
Slowly open the manual shutoff valve on the hot water outlet line. Again check
for any signs of leaks at all joints and valves.
5.
After assuring that the tank is completely filled and that no leaks are detected at
any joints, valves, or heating element flanges, turn on the electric power.
6.
As the unit is heating, check the contactors for "buzzing" or "chattering". If any
noise is detected, turn off the power and disassemble the contactor. Check for and
remove any dust or foreign particles that are detected. Reassemble the contactor
and turn on the power.
7.
Each boiler is equipped with a series of pilot lights that make verifying proper
operation an easy matter. Typically, the unit will be fitted with pilot lights for:
n
power on;
n
high limit control; and
n
low water cut off.
Summary of Contents for EHB
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Page 62: ...59 9 If no leaks are found follow the startup procedures page 17 to put the unit back on line ...
Page 64: ...61 Appendix A cont d ...
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