COOLING SYSTEM
Heater Circuit
To maximize the available heat energy of the heater circuit:
□
Use low restriction, high ef
fi
ciency cores
□
Optimize plumbing to give minimum restriction to coolant
fl
ow
□
Do not hinder air side restriction air
fl
ow for good distribution of heat
□
Use inside recirculated air (if window fogging is not a problem)
□
Use booster water pump if required
□
Do not place fuel heaters in the cab/sleeper heater circuits
□
Core and air ducts should favor defrost operation and driver/passenger comfort
The recommended heater connect points are listed in the “Technical Data” section of this manual
(refer to section 14).
7.14.3
COOLANT HEATERS
Information on coolant heaters can be obtained from the Detroit Diesel Application Engineering.
7.14.4
MULTI-DUTY CYCLE
Cooling systems
must
perform satisfactorily under all operating modes. Consideration
must
be given when an engine is used for prime power under several duty cycles such as cranes,
drill/pumping rigs, etc. Cooling system must be sized for the maximum rated load.
7.14.5
OTHER CONSIDERATIONS
Cooling system performance
must
be reevaluated any time engine, cooling system, vehicle
components, timing, etc., are changed due to potential increased heat load or reduced cooling
system capacity. Conduct a reevaluation of the cooling system if load, duty cycle, or
environmental operating conditions are different than originally approved.
7-52
All information subject to change without notice.
(Rev. 03/06)
7SA250 0603
Copyright © 2006 DETROIT DIESEL CORPORATION