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Desa BLP35E User Manual

Page 14

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Thermocouple

1. Make sure unit is unplugged.
2. Remove three screws that

attach fan guard to heater
shell.

3. Remove motor and fan

guard from heater shell
(see Figure 14). Be careful
not to damage fan.

4. Remove thermocouple nut

located inside the combus-
tion chamber (see Figure
15).

5. Place unit on its side, and

remove the thermocouple
wire from the gas valve
(see Figure 16).

6. Remove thermocouple

from the unit.

7. Install first of two nuts on

new thermocouple (see
Figure 17). Position nut
about 40mm from tip of
thermocouple.

8. Insert tip of thermocouple

through the thermocouple
hole in rear head (see
Figure 18).

9. Install second nut onto

thermocouple. Attach this
nut to thermocouple from
inside combustion cham-
ber (see Figure 18). Adjust
both thermocouple nuts
until tip of thermocouple
is 40mm from rear head.

10. Tighten thermocouple

nuts and confirm 40mm
tip location.

11. Thread the thermocouple

wire back through unit to
gas valve. Tighten ther-
mocouple wire into gas
valve until snug (do not
over tighten).

12. Place motor and fan guard

into rear of heater shell
(see Figure 19).

13. Insert three screws

through heater shell and
into fan guard. Tighten
screws firmly.

Figure 14 - Removing Motor and

Fan Guard from Heater

Figure 15 - Thermocouple Nut Location

Figure 16 - Removing Thermocouple Wire from Gas Valve

Thermocouple Wire

Gas Valve

First of Two Nuts

Thermocouple Nut

40 mm

Figure 17 - Installing First Nut on

New Thermocouple

Figure 18 - Installing New Thermo-

couple

New
Thermocouple

Figure 19 - Replacing Motor and Fan Guard into Heater

Thermocouple

Rear
Head

Thermocouple Nut

Thermocouple