Desa TB106, TB111, TB114 125 Continued, Fan, Motor Shaft and Setscrew, Identification, All Models

Service Procedures

Continued

14.Dry fan thoroughly.

15.Replace fan on motor shaft. Place set- screw on fat of shaft. See chart in Figure

10 for distance of fan hub from end of motor shaft. Tighten setscrew firmly (40-

50 inch-pounds).

16.Remove screws securing motor mount to shell.

17.Pull motor and fan from shell. Turn motor and fan around. Carefully place back in shell. Note: Fan will go into shell first.

18.Line up mounting holes in shell with holes on motor mount. Replace 4 screws through shell and motor mount.

19.Route motor wires through hole in top of shell (see Figure 7, page 8).

20.Reconnect motor wires to the same posts on terminal block as removed in step 3, page 8 (see Figure 7, page 8).

21.Replace top cover.

22.Replace fan guard.

Setscrew

Fan

Motor

Shaft

Figure 9 - Fan, Motor Shaft and Setscrew

Identification

Model	Distance A
55	0.19" (4.8 mm)
85 0.5" (12.7 mm)* or		Fan
	0.9" (22.9 mm)*
125 0.5" (12.7 mm)* or
	0.9" (22.9 mm)*	A
170	0.25" (6.4 mm)	Motor
* Depending
on Motor Shaft Motor		Hub
	Shaft

Setscrew

Specifications

All Models

•Propane/LP Gas

•Gas Supply Pressure to Regulator: Max - Bottle Pressure, Min - 25 psig (172.4 kPa)

•Gas Supply Pressure Regulator Out: 20 psig (137.9 kPa)

•Electrical Input: 120V, 60 Hz, 1Ø, 3a

•Direct Spark Ignition

•Minimum Ambient Temp. Rating: 0° F (-17.8° C)

55,000 Btu/Hr Models

•30 - 55,000 Btu/Hr (8.8 - 16.1 kW)

•Fuel Consumption:

1.4 - 2.6 pounds/hr (0.70 - 1.28 kg/hr)

•Primary Flame Control: Thermocouple operated gas valve

•Heated Air Output: 300 CFM (8.49 m3/min)

85,000 Btu/Hr Models

•50 - 85,000 Btu/Hr (14.6 - 25.0 kW)

•Fuel Consumption:

2.3- 3.9 pounds/hr (1.04 - 1.77 kg/hr)

•Primary Flame Control: Thermocouple operated gas valve

•Heated Air Output: 350 CFM (9.91 m3/min)

125,000 Btu/Hr Models

•75 - 125,000 Btu/Hr (21.9 - 36.6 kW)

•Fuel Consumption:

3.5- 5.8 pounds/hr (1.59 - 2.63 kg/hr)

•Primary Flame Control: Thermocouple operated gas valve

•Heated Air Output: 350 CFM (9.91 m3/min)

170,000 Btu/Hr Models

•125 - 170,000 Btu/Hr (36.6 - 49.8 kW)

•Fuel Consumption:

5.8- 7.9 pounds/hr (2.63 - 3.6 kg/hr)

•Primary Flame Control:

DSI Flame Rectification

•Heated Air Output: 450 CFM (12.74 m3/min)

Figure 10 - Fan Cross Section

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