INSTALLATION
Rev. 10/06
PrecisionTemp, Inc • 11 Sunnybrook Drive • Cincinnati, Ohio, 45237 • 1-800-934-9690 • fax 513-641-0733
2. The inlet water to the booster heater must come from a primary water heater. DO NOT
RUN A COLD WATER LINE TO THE BOOSTER HEATER.
3. A shut-off valve (a full open gate or ball type) should be installed in the inlet water line. A
union fitting and a drain valve should be installed for easy servicing.
4. PrecisionTemp recommends the installation of a shock absorber in the outlet of the
booster heater to eliminate water hammer caused by the quick closing of the solenoid
valve of the dishwasher. Install this as close as possible to the dishwasher.
5. A temperature gauge must be installed in both the inlet and outlet lines to the PT-200RC
recirculating booster heater. These two gauges will help eliminate unnecessary customer
service calls. *These components are part of the installation kit. Proper operation of the
rinse nozzles in the dishwasher requires the water pressure available at the nozzle to be
between 15 and 25 PSI when the nozzles are spraying. If the water pressure is over 25
PSI, a pressure-reducing valve is required. It should be mounted in the hot water supply
to the dish machine. It is important that the water flow through the valve is in the proper
direction. Check the directional arrows. IMPORTANT- If there is already a functioning
pressure reducer installed on the warewasher, do not install another at the booster. This
will cause variations in pressure and malfunctions in the water system.
6. A pressure relief valve must be installed on the recirculation tank. To avoid damage or
scalding due to valve operation, a drainpipe must be connected to the valve outlet and run
to a safe place of disposal. The drainpipe must be as short as possible and the same
size as the valve discharge connection throughout its entire length. The drainpipe must
be pitched downward from the valve and terminate at least 6" above a floor drain to make
any discharge clearly visible. The drain line should terminate plain, not threaded, and be
made of a material capable of withstanding temperatures up to 250° F. The valve lever
must be tripped periodically to insure that waterways are clear. This device is designed
for emergency safety relief and should not be used as an operating control.
7. In connecting the booster heater plumbing to the dishwasher, use ¾” piping to supply the
sanitizing rinse spray on the dishwasher. Be certain that the connection is made to the
final sanitizing rinse of the dishwasher and NOT TO THE WASH TANK OF THE
DISHWASHER.
Check carefully for proper plumbing installation (refer to the PT200RC plumbing diagram).
Observe the following cautions:
•
Do not back up or loosen any pipe fittings, as a leak will develop.
•
Do not connect the booster heater directly to a boiler or furnace coil or any other uncontrolled
temperature source.
Fill the booster heater with water to test for installation leaks. Leave the water in the booster to
prevent damage in the event the electrician should apply power.
5. Gas Line Installation
It is very important that the type and inlet pressure of the gas used corresponds to the
specification plate on the booster heater case. This unit is equipped with a ¾” male pipe. The
fitting is on the lower right back of the case.
The gas line should be should be of the approved type for use with Natural Gas or Propane. The
gas line must be of adequate diameter to accommodate the flow of 199,000 BTU per hour. It
