Hatco Imperial Series Installation And Operating Manual page 4

IMPORTANT SAFETy INFORMATION
WARNING
Install the booster heater as close as possible to the
commercial dishwasher. Employ recirculation if distance
between booster and commercial dishwasher exceeds
National Sanitation Foundation (NSF) specifications of
1524 linear milllimeters (5').
Follow standard welding
procedures when attaching sliderails to bottom of
dishtable.
Make sure the dishtable is strong enough to support the
weight of the booster heater and water when installing
with slide mounting brackets.
Refer to the BOOSTER HEATER SIzING CHART in this
manual to ensure proper sizing and avoid personal injury
and/or damage to the booster heater.
It is essential to recognize that even though a water heater
may be properly installed initially and approved, there
always exists the possibility that unknowing individuals
might alter or change the installation in a manner that
would render it unsafe. Therefore, it is important that all
safety programs provide some mechanism to assure that
these installations are inspected periodically.
This unit has no "user-serviceable" parts. If service is
required on this unit, contact an Authorized Hatco Service
Agent or contact the Hatco Service Department at
(0512) 6732-5091; fax (0512) 6732-5092.
BURN HAzARD:
• Water in unit is very hot. Wear protective gloves and
proper attire when operating to avoid injury.
• valves supplied by Hatco are designed for high
temperature commercial operation. Do not substitute
Hatco valves with valves designed for domestic water
heaters.
Do not use anti-siphon or check valves on incoming water
line.
Do not connect booster heater directly to a boiler or
furnace coil or any other uncontrolled temperature
source. The booster heater thermostat could be damaged
causing unit to overheat.
safety and operational
CAUTION
Hatco requires that two temperature/pressure gauges,
Hatco P/N 03.01.003.00, be installed to assure proper
operation. Install one in the supply line before the
pressure reducing valve and one in the outlet line as close
to the booster heater as possible. This provides a visual
check of the water temperature and pressure before and
after the water heater.
If water supply pressure to the booster inlet is over
138 kPa (20 psi) during flow, install Hatco pressure
reducing valve with
03.02.004.00, for proper operation of dishwater rinse
nozzles.
NOTE: The pressure reducing valve must be the type
equipped with a high pressure bypass as supplied by
Hatco.
DO NOT turn on power to the booster heater until tank has
been filled with water and all air has been vented through
the dishwasher rinse nozzle. The heating elements will
burn out in seconds if operated when they are not
immersed in water.
ALWAyS drain booster heater with power to the unit off or
element burnout could occur.
Use dielectric couplings when connecting dissimilar
metals, such as galvanized to copper. This will prevent
electrolysis or premature plumbing damage.
DO NOT turn or adjust outlet water connection on all
Large Compact Series units (C-24 to C-57).
DO NOT turn or adjust inlet water connection on Compact
Series Booster Heaters. Doing so will change the internal
water flow.
Do not back out or loosen any pipe fittings. Doing so may
cause leaks.
Do not lay unit on the side with the control panel. Damage
to the unit could occur.
Incoming water in excess of 0.75 grains of hardness per
liter (gpl) (3 grains of hardness per gallon [gpg]) must be
treated and softened before being supplied to booster
heater(s). Water containing over 0.75 gpl (3 gpg) will
decrease efficiency, increase energy use, and reduce the
operating life of the unit through increased lime build-up.
Product failure caused by liming or sediment buildup is
not covered under warranty.
Do not use deionized or reverse osmosis (R.O.) treated
water in booster heaters. Damage to booster heater may
occur.
Connect Hatco Electric Booster Water Heaters to the same
power supply as indicated on the specification decal only.
Units connected to an incorrect power supply voids the
product warranty and may damage the equipment.
4
English
CAUTION
built-in bypass, Hatco
NOTICE
Form No. EBOOSTERm_CN-0911
P/N