NHTSA ID Number: 11005453
Manufacturer Communication Number: FAB313
TSB/Document Date: 2024-08-02
Summary
Freightliner Action Bulletin for Espar HS3 Heater for Dual Parked HVAC
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Espar HS3 Heater for Dual Parked HVAC GEEETTED
What is it?
The HS3 is the next generation hydronic heater from Espar, replacing the D5 model. Hydronic heaters use hot
water as heat transfer medium in heating and cooling systems. Designed for use with the Dual Parked HVAC
system, the HS3 features an under cab mount for easier serviceability, proprietary ECU with direct contact to the
brushless blower motor instead of the air intake to encapsulate the motor for greater protection and longevity,
sj and a new heat exchanger to improve heat transfer.
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— Why is it important? Electronic Control
> The HS3 offers greater heating capabilities, improved durability, reliability, and overall better performance to Unit (ECU)
a improve uptime and driver comfort experience. A brushless motor results in a longer lifetime by 2000 hours when Heat Exchanger
& compared to a brush motor. An improved IP (ingress protection) rating from 54 to 56 delivers dust protection and
frat greater water protection from forceful projection streams. IP ratings grade the resistance of an enclosure from Brushless blower motor
oO dust and liquids. Thermal efficiency is improved by requiring 7% less power from the engine to run and power
Cc consumption reduced by 16%. This allows for a more efficient and environmentally friendly heater that saves the
8 driver on fuel and battery use. A 35 second faster start up time and an overall 6 decibel reduction in noise, keep T |
the driver more comfortable. a Fi
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July 2028 Specifications are subject to change without notice. Copyright 2024, Daler Trucks North America, Alleghts reserved FaB313
Espar HS3 Heater for Dual Parked HVAC (Gadd
5 Full Heater Assembly
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TSB/Document ID: FAB313
Replacement Service Bulletin Number:
MFR Communication Date: 2024-07-19
MFR Internal Campaign ID/Software Version:
Communication Type: Other
NHTSA Components: VISIBILITY/WIPER
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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