The diesel fuel heaters apply heat to the fuel incoming from the fuel tank to enable it to flow more freely on its way to the primary fuel filter/water separator. Heating the fuel dissolves paraffin wax crystals (and ice) that form when diesel fuel is chilled thus enabling water separators to work more efficiently and to prevent fuel filters from plugging with wax and/or ice crystals.
This unit will work perfectly for bio-diesel and vegetable oil fuel too.
1. DETERMINE THE ENGINE HORSEPOWER. (The fuel heaters have been matched to fuel flow rate using engine horsepower)
2. DETERMINE THE TYPE OF HEATER PREFERRED: NOMAD OR THERMOLINE. Both types of heaters are located in the fuel stream between the fuel tank and the primary fuel filter/water separator. The Nomad heaters are small and may be mounted to a fixed surface out of the wind stream. These are ideal for applications where space is limited. The Thermoline electric heaters are in--line units that actually replace a section of fuel hose. These units are also well suited to replace existing fuel hose that may be somewhat exposed to the wind stream: like fuel tank crossover lines, fuel lines from tank to engine frame, etc.
3. DETERMINE THE TYPE OF HEATER POWER: COOLANT OR ELECTRICAL.
Some criteria that may affect this decision are:
(1) electrical hookup may be easier;
(2) alternator is capable of the additional load;
(3) alternator or electrical system is already at capacity, therefore coolant
heated is preferred.
Coolant heat exchanger type unit. Use with engines up to 300 horsepower. Aluminum die-cast body and plated steel coolant heat exchanger. Accepts 5/8” I.D. coolant hoses. Mounting bracket and hardware included.
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Basic Models
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Nomad Electric
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Nomad Coolant
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Part Number
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14278
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14279
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14257
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14261
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320HTR4
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320HTR4T
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Engine Horsepower
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up to 200
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200 to 300
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up to 300
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|||
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Engine Horsepower kW
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up to 149
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149 to 224
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up to 224
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|||
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Power output Watts
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300
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300
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500
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500
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N/A
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N/A
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Power output Volts
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12
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24
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12
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24
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N/A
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N/A
|
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Amperes draw (nominal)
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21.4
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10.7
|
35.7
|
17.9
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N/A
|
N/A
|
|
Alternator Rating, Min.(1)
|
65
|
40
|
75
|
45
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N/A
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N/A
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Internal Thermostat
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Yes
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Yes
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In-Cab
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In-Cab
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No
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Yes
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Port Size, Fuel SAE
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7/8”-14
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7/8”-14
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7/8”-14
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7/8”-14
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7/8”-14
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3/8” NPT
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Port Size, Coolant
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N/A
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N/A
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N/A
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N/A
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5/8” I.D. Hose
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|
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Height in.
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2.56
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2.56
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2.56
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2.56
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3.82
|
3.82
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Height mm
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65
|
65
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65
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65
|
97
|
97
|
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Width (Length) in.
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5.75
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5.75
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5.75
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5.75
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3.88
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3.88
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Width (Length) mm
|
146
|
146
|
146
|
146
|
99
|
99
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Depth in.
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5.38
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5.38
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5.38
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5.38
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4.72
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4.72
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Depth mm
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137
|
137
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137
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137
|
120
|
120
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Dry Weight lbs.
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1.7
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1.7
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1.7
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1.7
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2.1
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3.0
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Dry Weight kgs.
|
.77
|
.77
|
.77
|
.77
|
.95
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1.36
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(1) For on--highway trucks, assuming all tractor lights and blowers are on.
Use of more accessories will require a higher rating.
(2) Thermoline fittings are 45o female swivel (SAEJ512). Do not adapt to JIC
37o fittings (SAEJ514). See Thermoline Section.
Note: For very severe cold operating climates, a Nomad coolant heater and a Thermoline in--line electric heater could be used.
