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10

099162

LP-PFA/P 019B

45/80 Models

FAN CROSS SECTION

LP-PFA/P 013

FAN

LP-PFA/P 023

SERVICE

PROCEDURES

Upper Shell Removal

1. Remove screws along each

side of heater using 5/16"
nut-driver. These screws
attach upper and lower
shells together.

2. Lift or slide upper shell off.
3. Remove fan guard.

Fan

Motor

Figure 7 - Upper Shell Removal,

150,000 BTU/Hr Model

Figure 6 - 

Upper Shell Removal,

80,000 BTU/Hr Model

Figure 10 - Fan Cross Section

Figure 9 - Fan, Motor Shaft,

and Setscrew Location

80,000 BTU/Hr
Model Shown

Motor shaft

Fan

Setscrew

Fan

Figure 8 - Fan Removal and Air Sensing

Switch Location

Air Sensing
Switch
Paddle
(80,000
BTU/Hr
Model
Only)

Paddle
Arm

Hub

Setscrew

Motor
Shaft

!

WARNING

Never service heater while it is plugged in, connected to
propane supply, operating, or hot. Severe burns and
electrical shock can occur.

Fan

IMPORTANT:

 

Remove fan

from motor shaft before
removing motor from heater.
The weight of the motor
resting on the fan could
damage the fan pitch.
1. Remove upper shell (see

above).

2. Use 1/8" hex wrench to

loosen setscrew which
holds fan to motor shaft.

3. Slip fan off motor shaft.

Be careful not to strike air
sensing switch paddle or
paddle arm (80,000 BTU/
Hr model only).

4. Clean fan using soft cloth

moistened with kerosene or
solvent.

5. Dry fan thoroughly.
6. Replace fan on motor shaft.

Make sure setscrew is
touching back of flat
surface on motor shaft (see
Figure 10).

7. Place setscrew on flat of

shaft. Tighten setscrew
firmly (40-50 inch-
pounds).

8. Replace fan guard and

upper shell.

Summary of Contents for 150,000 BTU/Hr Models

Page 1: ...ONS WHO CAN UNDERSTAND AND FOLLOW THE IN STRUCTIONS SHOULD USE OR SERVICE THIS HEATER IFYOUNEEDASSISTANCEORHEATERINFORMATIONSUCHASAN INSTRUCTIONS MANUAL LABELS ETC CONTACT THE MANUFAC TURER Heater Siz...

Page 2: ...heated We cannot foresee every use which may be made of our heaters Check with your local fire safety authority if you have questions about heater use Otherstandardsgoverntheuseoffuelgasesandheatprodu...

Page 3: ...heater below ground level Propane gas is heavier than air If a leak occurs propane gas will sink to the lowest possible level Use only the electrical voltage and frequency specified on model plate Th...

Page 4: ...er Shell On Off Switch Power Cord Hose Regulator Assembly Inlet Connector Figure 2 150 000 BTU Hr Model Generic LP 45 80 LP PFA PV 008A Fan Guard Handle Lower Shell Power Cord Hose Regulator Assembly...

Page 5: ...s a stream of clean hot air The Ignition System The direct spark ignitor DSI sends voltage to the spark plug ignitor The spark plug ignitor ignites the fuel and air mixture The Safety Control System T...

Page 6: ...With Vent Pointing Down Less gas is vaporized at lower temperatures You may need two or more 100 pound tanks or one larger tank in colder weather Your local propane gas dealer will help you select th...

Page 7: ...U Hr Model Shown 6 Close propane supply valve WARNING Follow the minimum fresh outside air ventilation require ments If proper fresh outside air ventilation is not provided carbon monoxide poisoning c...

Page 8: ...on chamber 4 When taking heater out of storage always check inside of heater Insects and small animals may place foreign objects in heater Keep inside of heater free from combustible and foreign objec...

Page 9: ...embly before each use If hose is highly worn or cut replace 4 Have heater inspected yearly by a qualified service agency 5 Keep inside of heater free from combustible and foreign objects PREVENTATIVE...

Page 10: ...Arm Hub Setscrew Motor Shaft WARNING Never service heater while it is plugged in connected to propane supply operating or hot Severe burns and electrical shock can occur Fan IMPORTANT Remove fan from...

Page 11: ...ut is located on spark plug threads inside combustion chamber see Figures 12 and 14 5 Loosen and remove spark plug with 13 16 spark plug socket Be careful not to strike air sensing switch paddle 6 Cle...

Page 12: ...Gallons Hour Pounds Hour Supply Pressure To Regulator Minimum for purposes of input adjustment Maximum Regulator Outlet Pressure Factory Preset Manifold Pressure Hot Air Output CFM Approx Motor Electr...

Page 13: ...White White Orange White Green 120 VAC On Off Switch Solenoid Valve Red Ground Neutral Sensor Thermostat Main Valve Main Valve Return Red Red White Green Yellow Green Black Black Black White White Gr...

Page 14: ...ck Black White Blue Blue Blue Blue Insulated Connector Thermal Switch Orange Green Ignitor Fuse If Equipped Relay Position of Leads May Vary Electrical Ladder Diagram Line Neutral Green or Green Yello...

Page 15: ...number You can purchase a service manual for 5 Make check payable to DESA International You may have further questions about this heater If so contact DESA International s Technical Service Department...

Page 16: ...s Some states do not allow the exclusion or limitation of incidental or consequential damages or limitations or exclusions may not apply to you This Limited Warranty gives you specific legal rights an...

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