Specifications; Wiring Diagram - Desa D20H Owner's Manual

SERVICE
PROCEDURES
Continued
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 page 8).
2. Use 1/8" allen wrench to loosen set-
screw which holds fan to motor shaft.
3. Slip fan off motor shaft.
4. Clean fan using a soft cloth moistened
with kerosene or solvent.
5. Dry fan thoroughly.
6. Replace fan on motor shaft. Place fan
hub flush with end of motor shaft (see
Figure 28).
7. Place setscrew on flat of shaft. Tighten
setscrew firmly (40-50 inch-pounds/
4.5-5.6 n-m).
8. Replace fan guard and upper shell.
Setscrew
Motor
Shaft
Figure 27 - Fan, Motor Shaft, and Setscrew
Location
Fan
Motor
Shaft
Setscrew
Figure 28 - Fan Cross Section
105843
IGNITION CONTROL
ASSEMBLY
(Procedure for Replacing Fuse)
WARNING: High Voltage!
1. Unplug heater
2. Remove side cover screws (4) using
5/16" nut-driver to expose ignition con-
trol assembly.
3. Remove fuse cover (see Figure 29).
4. Remove fuse from fuse clips.
5. Replace fuse with fuse of the same type
and rating. Do not substitute a fuse with
a higher current rating.
6. Replace fuse cover.
7. Replace side cover.

SPECIFICATIONS

Output Rating (Btu/Hr)
Fuel
Fuel Tank Capacity
(U.S. Gal./Liters)
Fuel Consumption
Fan
(Gal. Per Hr./Liters Per Hr.)
Electric Requirements
Amperage (Normal Run)
Hot Air Output (CFM/CMM)
RPM

WIRING DIAGRAM

Flush
Figure 30 - Wiring Diagram
OWNER'S MANUAL
70,000
Use Only Kerosene or No. 1 Fuel Oil
5.0/18.9
.52/1.97
230 V/50 Hz (Same All Models)
1.0
225/6.4
2850
Blue
Photocell (1)
Photocell (2)
Blue
Motor Return (3)
White
230V Lamp (4)
White
AC Neutral (N)
Blue
AC Hot (5)
Brown
Motor Main (6)
Red
Ignitor (7)
Black
Ignitor Return (8)
Black
13
Fuse Clips
Figure 29 - Replacing Fuse
110,000 150,000
9.0/34 13.5/51.1
.79/3.0 1.1/4.1
1.2 1.2
425/12 500/14.2
2850 2850
Photocell
Green-
Blue
Yellow
Motor
Green-
Yellow
1
1a
2
On/Off
Ignitor
Switch
Fuse
Cover
Fuse
Brown