Desa 30-80, 75-200 Specifications, Troubleshooting, Observed Fault Possible Cause Remedy

Models: 30-80 75-200

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SPECIFICATIONS

 

80,000 Btu

200,000 Btu

Type of Gas

Propane/LP Only

Propane/LP Only

Gas Supply Pressure to regulator

 

 

Maximum

Bottle Pressure

Bottle Pressure

Minimum

5 psig (34.5 kPa)

15 psig (103 kPa)

Gas Supply Pressure regulator out

11" W.C. (2.74 kPa)

10 psig (68.9 kPa)

Ignition

Piezo Ignitor

Piezo Ignitor

Minimum Ambient Temp. Rating

0°F (-17.8°C)

0°F (-17.8°C)

Rating

30,000 - 80,000 Btu/hr

75,000 - 200,000 Btu/hr

 

(8.79 - 23.4 kW)

(22.0 - 58.6 kW)

Fuel Consumption

1.4 to 3.7 lb/hr

3.5 - 0.3 lb/hr

 

(.74 – 1.80 kg/hr)

(1.44 - 4.32 kg/hr)

Fuel Orifice Port No.

6

6

Fuel Orifice Port Size

0.0472"

0.0320"

 

(1.20mm)

(.813mm)

TROUBLESHOOTING

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

OBSERVED FAULT

POSSIBLE CAUSE

REMEDY

 

 

 

 

Burner fails to light

1. Propane supply valve closed

1.

Open propane supply valve

 

 

on propane tank(s)

 

slowly

 

2.

Excess flow check valve

2.

Close propane supply valve on

 

 

closed

 

propane tank and reopen slowly

 

3.

Blockage in burner orifice

3.

Replace burner orifice

 

4.

Piezo ignition system not

4.

Check to assure ignitor elec-

 

 

sparking

 

trode gap is .195" Check wire

 

 

 

 

lead for damage. Replace

 

 

 

 

piezo ignitor and/or ignitor

 

5.

Pilot orifice clogged

 

electrode as necessary

 

5.

Clean or replace pilot assembly

 

 

 

 

Pilot lights but goes out when

1. Not enough warm up time

1.

Relight, hold automatic control

automatic control valve button

2. Low gas pressure

 

valve button in 45 seconds

is released

2.

Check propane tank(s) for

 

3.

Thermocouple loose or needs

 

proper gas supply

 

3.

Tighten connection or replace

 

 

to be replaced

 

thermocouple

 

4.

Automatic control valve needs

4.

Replace automatic control

 

 

to be replaced

 

valve

 

 

 

 

Burn rate is low

1. Control valve is on LOW

1.

Turn valve counter clockwise

 

2.

Plugged gas orifice

 

to HIGH

 

2.

Replace gas orifice

 

3.

Low gas pressure

3.

Check gas supply; check

 

4.

Low fuel supply

 

regulator output

 

4.

Consult propane gas supplier

113811-01A

www.desatech.com

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Desa 30-80, 75-200 owner manual Specifications, Troubleshooting, Observed Fault Possible Cause Remedy

30-80, 75-200 specifications

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