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5

100416

OWNER’S MANUAL

INSTALLATION

1.

Provide propane supply system (see
Propane Supply, page 4).

2.

Connect POL fitting on hose/regulator
assembly to propane tank(s). Turn POL
fitting counterclockwise into threads on
tank. Tighten firmly using a wrench.

IMPORTANT:

 Tighten regulator with

black adjustment knob pointing down.
Pointing adjustment knob down pro-
tects regulator from weather damage.

3.

Connect hose to inlet connector.
Tighten firmly using a wrench.

IMPORTANT:

 Extra hose or piping

may be used if needed. Install extra
hose or piping between hose/regulator
assembly and propane tank. You must
use the regulator supplied with the
heater.

Figure 3 - Regulator With Adjustment
Knob Pointing Down

 WARNING: Review and un-

derstand the warnings in the
Safety Information section, page
2. They are needed to safely op-
erate this heater. Follow all local
codes when using this heater.

 WARNING: Test all gas pip-

ing and connections for leaks
after installing or servicing. Never
use an open flame to check for a
leak. Apply a mixture of liquid
soap and water to all joints.
Bubbles forming show a leak.
Correct all leaks at once.

Figure 4 - Hose and Inlet Connector

Hose

Inlet Connector

 WARNING: Do not adjust regu-

lator below 7 psig or above 20 psig.
Heater may not run properly.

Figure 5 - Adjustable Regulator Set At
7 psig

I

N

C

R

E

A

S

E

10

15

20

10

15

20

5

5

5

10

15

20

Regulator

OPERATION

TO START HEATER

1.

Follow all installation, ventilation and
safety information.

2.

Locate heater on stable and level sur-
face. Make sure strong drafts do not
blow into front or rear of heater.

3.

Plug power cord of heater into a three-
prong, grounded extension cord. Exten-
sion cord must be at least six feet long.
Extension cord must be UL listed.

Extension Cord Size Requirement

Up to 50 feet long, use 18 AWG rated cord.

51 to 100 feet long, use 16 AWG
rated cord.

101 to 200 feet long, use 14 AWG
rated cord.

4.

Plug extension cord into a 120 volt/60
hertz, three-hole, grounded outlet.

5.

Open propane supply valve on propane
tank(s) slowly. 

Note:

 If not opened

slowly, excess-flow check valve on pro-
pane tank will stop gas flow. If this hap-
pens, you may hear a click inside the
regulator assembly. To reset the excess
flow check valve, close propane sup-
ply valve and open again slowly.

6.

Make sure regulator is set between 7
and 20 psig. 

Note:

 Higher regulator

setting will allow heater to produce
more heat.

 WARNING: Review and un-

derstand the warnings in the
Safety Information section, page
2. They are needed to safely op-
erate this heater. Follow all local
codes when using this heater.

 WARNING: Do not adjust regu-

lator below 7 psig or above 20 psig.
Heater may not run properly.

7.

Turn on/off switch to the ON position.

Note:

 If heater does not start, turn on/

off switch to the OFF position. Wait ten
seconds for safety control to reset, then
try again.

Continued

4.

Open propane supply valve on propane
tank(s) slowly. 

Note:

 If not opened

slowly, excess-flow check valve on pro-
pane tank will stop gas flow. If this hap-
pens, you may hear a click inside the
regulator assembly. To reset the excess
flow check valve, close propane sup-
ply valve and open again slowly.

5.

Adjust regulator between 7 and 20 psig
(see Figure 5). 

Note:

 Higher regulator

setting will allow heater to produce
more heat.

6.

Check all connections for leaks.

7.

Close propane supply valve.

Propane
Tank

Supply
Valve

Hose

POL Fitting

Regulator

Adjustment
Knob
(pointing
down)

Summary of Contents for BLP375A

Page 1: ...OM HAZARDS OF FIRE EXPLOSION BURN ASPHYXIATION CARBON MONOXIDE POISONING AND OR ELECTRICAL SHOCK ONLY PERSONS WHO CAN UNDERSTAND AND FOLLOW THE IN STRUCTIONS SHOULD USE OR SERVICE THIS HEATER IF YOU N...

Page 2: ...heated We cannot foresee every use which may be madeofourheaters Checkwithyourlocal firesafetyauthorityifyouhavequestions about heater use Other standards govern the use of fuel gases and heat produc...

Page 3: ...Shell Hose Regulator Assembly 1 Remove all packing items applied to heater for shipment Keep plastic cover caps attached to inlet connector and hose regulator assembly for storage 2 Remove all items f...

Page 4: ...ir For Heating THEORY OF OPERATION The Fuel System The hose regulator assembly attaches to the propane gas sup ply The propane gas moves through the solenoid valve and out the nozzle The Air System Th...

Page 5: ...into a three prong grounded extension cord Exten sion cord must be at least six feet long Extension cord must be UL listed Extension Cord Size Requirement Upto50feetlong use18AWGratedcord 51 to 100 f...

Page 6: ...all leaks at once 3 Inspect hose regulator assembly before each use If hose is highly worn or cut replace 4 Have heater inspected yearly by a quali fied service agency 5 Keep inside of heater free fro...

Page 7: ...6 white wire to terminal board Note Attach to empty connector on white wire side of terminal board black wire to terminal board Note Attach to empty connector on black wire side of terminal board blue...

Page 8: ...ntrol Orange Ignitor Thermal Switch Orange Terminal Board White White Black Black Blue Connector Blue Connector Blue Black Figure 12 Electrical Ladder Diagram Figure 11 Wiring Diagram Green Black Whit...

Page 9: ...also visit DESA International s Technical Service web site at www desatech com TECHNICAL SERVICE SERVICE PUBLICATIONS YoucanreceiveanIllustratedPartsListfree of charge Send your request and a self add...

Page 10: ...PROPANE CONSTRUCTION HEATER 375 000 BTU HR A SERIES ILLUSTRATED PARTS BREAKDOWN BLP375A RLP375A Note Screws are standard hardware items 2 21 1 4 27 18 3 8 9 10 11 22 17 26 25 23 24 16 15 19 20 7 14 12...

Page 11: ...3 1 Strain Relief Bushing 1 13 099896 05 Cord Assembly 1 14 097809 01 Male Fitting 1 15 097828 01 Solenoid Bracket 1 16 098201 01 Solenoid Valve 1 17 100145 01 Fuel Tube 1 18 099679 01 Nozzle 1 19 M51...

Page 12: ...s Of Merchantability And Fitness For A Particular Purpose DESA International assumes no responsibility for indirect incidental or consequential damages Some states do not allow the exclusion or limita...

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