STP SERIES Install, Operation, and Maintenance Manual
SECTION 4: MAINTENANCE
Page
64
of
97
Diversified Heat Transfer, Inc.
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439 Main Road
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Towaco, New Jersey 07082
Rev-1
09/11/2019 PHONE: 800-221-1522
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WEBSITE: www.dhtnet.com
STP Manual
WARNING!
DO NOT RUN THE PUMP WITHOUT WATER AND FAILURE TO DO SO CAN CAUSE
DAMAGE TO THE PUMP.
4.7 TEMPERATURE CONTROLLER
The temperature controller is a digital solid-state device, which requires no periodic
maintenance. Occasional physical checks of the unit should be carried out for physical and
mechanical security of mounting, terminal blocks, and electrical wiring.
4.8 REPLACEABLE PARTS LIST
The following is a list of typical parts that are generally replaceable by personnel trained/certified
on DHT, Inc., STP water heaters. The replaceable parts may vary, depending on the unit and
the particular design specifications in which the unit was constructed. If there are questions
concerning the replaceable parts for the unit, refer to the original design specifications, or
contact DHT, Inc.
Please have the unit’s model and serial number available when contacting DHT, Inc.
NOTE:
Replaceable Parts may vary depending on design specification of the unit.
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Control Valve(s) if used
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VFD Pump(s) if used
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Heat Exchangers
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Relief Valves
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Circulation Pump(s)
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Temperature sensor or aquastat
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Isolation Valves and other pipe fittings etc.
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Control Panel and its components including HMI, Temperature Controller, etc.
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Support Frames/Brackets
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Hardware
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Anodes(s) for carbon steel tank option
NOTE:
Refer to Sections 4.12 and 4.13 for complete replacement part number information.
