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OPERATION
General
Use the following procedures to operate a Hydro-Heater.
WARNING
Read all safety messages in the IMPORTANT SAFETY
INFORMATION section before operating this equipment.
BURN HAZARD:
• Some exterior surfaces on unit will get hot. Avoid
unnecessary contact with unit.
• Water in holding vessel may reach temperatures in
excess of 190ºF (88ºC). Use appropriate protection
when operating unit.
• DO NOT set temperature control higher than 190ºF
(88ºC). Units are designed to heat water up to 190ºF.
Water over 190°F is very active and could splash onto
operator causing serious burns or injury.
NOTICE
Do not turn on power to unit until holding vessel has
been filled with water. Dry operation may cause element
burnout.
ALWAYS drain holding vessel with power to unit off or
element burnout could occur.
1. For hardwired units, check that the fused disconnect
switch or circuit breaker is in the "on" position. For
cord and plug units, make sure the unit is plugged into
a properly grounded receptacle of the correct voltage,
size, and plug configuration. See the SPECIFICATIONS
section for details.
2. Make sure that the small pipe caps (if provided) are
tightened securely to the clean-out drains.
3. Close the drain by moving the drain handle toward the
front of the unit until it stops.
4. Fill the sink or holding vessel with hot water to the normal
operating level.
• For units with Auto-Fill, open the water supply valve and
verify the sink or holding vessel is being filled with water.
5. Move the Power I/O (on/off) switch to the I (on) position.
• The WATER TEMPERATURE display will glow to
indicate power is supplied.
NOTE: Auto-Fill units only—When the tank water level
reaches the low water probe, the display will show
the current water temperature and a small red light
will glow in the upper left-hand corner of the display
indicating the heating elements are energized. Water
will continue to fill the tank until the water reaches the
upper water probe. The heating elements will remain on
until the tank water reaches the programmed setpoint
temperature .
CAUTION
6. Set the electronic controller to the desired setpoint
temperature.
a. Press the
key. The WATER TEMPERATURE display
will show "TSP".
b. Press the
key again. The WATER TEMPERATURE
display will show the current setpoint temperature.
c. Press the
key or
temperature. The WATER TEMPERATURE display will
show the new setpoint temperature.
d. Press the
key. The WATER TEMPERATURE display
will show "End". Wait 5 seconds and the unit will show
the current operating temperature.
Drain
Handle
(closed)
!
Hydro-Heater Control Panel
NOTE: If setpoint temperature adjustment is interrupted or no
changes are made for 15 seconds, the controller will go
back to its original setting without accepting the change.
NOTE: If the WATER TEMPERATURE display shows "E2",
the internal water sensing probe is out of temperature
range. If this occurs, contact the Hatco Parts and
Service Team or an Authorized Service Agent in your
area for assistance.
NOTE: If the WATER TEMPERATURE display shows "E3",
the low water sensing probe is not sensing water. The
heating elements will not activate until the probe is
submersed in water. If this occurs, add water or check
the water supply connection.
10
English
key to change the setpoint
Electronic
Controller
Power I/O
(on/off)
Switch
Cleanout
Drain
w/Cap
Drain
HHM-0224
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