Hatco Imperial Series Installation And Operating Manual page 23

English
Outlet
1. Connect the booster heater water outlet to the commercial
dishwasher sanitizing rinse pipe connection using a 3/4"
union and piping.
NOTICE
DO NOT turn or adjust outlet water connection on all
Large Compact Series units (C-24 to C-57).
NOTE: Red mark on outlet water pipe for C-24 to C-57 series
units must remain in the top most position.
NOTE: Be certain the connection is made to the final rinse and
not to the wash tank.
2. Install a temperature/pressure gauge in the outlet line. The
temperature sensing element must be in the water stream
and the gauge must be mounted upright.
• Water temperature at the outlet should be 85°–88°C
(185°–190°F).
NOTE: Some dishmachines require two booster heaters be
plumbed in series (not parallel) to meet demand. To
assure proper operation a 11°C (20°F) temperature
differential must be maintained between the outlet of
the first booster heater and the inlet of the second
booster heater.
NOTE: Hatco recommends installing an optional shock
absorber (P/N 03.04.057.00) in the outlet line as close
as possible to the commercial dishwasher solenoid
rinse valve. The shock absorber softens the water
hammer caused by automatic dishwasher valves.
Plumbing Installation Inspection
1. Close drain pipe valve and fill booster heater with water.
2. Check all pipe connections for leaks.
3. make sure relief valve discharge is not blocked.
4. Vent air from tank before operating by opening
temperature/pressure relief valve.
DO NOT turn on power to the booster heater until tank has
been filled with water and all air has been vented through
dishwasher rinse nozzle. Heating elements will burn out in
seconds if operated when they are not immersed in water.
Form No. EBOOSTERm_CN-0911
CAUTION
1/2" Copper
Female Fitting
Adapter
3/4" Nominal
Copper Pipe
Figure 12. Recommended Temperature/Pressure Gauge Installation
Center bottom
of sensor
in copper pipe.
3/4" Nominal
Copper Pipe
3/4" x 1/2" x 3/4"
CopperTee
Figure 13. alternate Temperature/Pressure Gauge Installation
Hatco has always endorsed the use of safety equipment
when using a booster water heater or storage-type water
heater. Hatco booster heaters are shipped with a
temperature/pressure relief valve at no extra charge. This
valve must be installed into the marked opening provided
in the tank. valves supplied by Hatco are designed for
high temperature commercial operation. Do not substitute
Hatco supplied valves with valves designed for domestic
operation.
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.
23
INSTALLATION
Temperature/
Pressure Gauge
with 1/2"
Pipe Thread
1/2" Pipe
Thread
Temperature
Sensing Element
Temperature/
Pressure Gauge
with 1/2"
Pipe Thread
1/2" Copper
Female Fitting
Adapter
Temperature
Sensing Element
WARNING