Specifications

D-1000B Heater Operations & Maintenance
5.4.12 Removal and Installation of the Photocell
5.4.12.1 Removal procedures:
1. Disconnect power cord from power source and allow heater to cool.
2. Remove four quick release pins and remove top cover (see Figure 5-1).
3. Using a 8mm nut driver, remove the upper heat shield (05) by removing six screws (79) and two sheet metal
screws (78); remove heat shield and set aside.
4. Using a Phillip head screwdriver, remove two screws (81) securing control panel assembly (29). Pull assembly
straight out and lay down exposing internal components and electrical wires.
5. Pull photocell (66) straight back out of flame detector holder (93) (see Figure 5-9).
6. Disconnect quick disconnect wire connector (blue and brown wire connector) from ignition control assembly (53)
(see Figure 5-11).
7. Gently pull photocell lead through lower heat shield (06) into base (30).
8. Discard photocell.
Figure 5-12 – Photocell
5.4.12.2 Installation procedures:
1. Install new photocell lead through base (30) up into lower heat shield (06).
2. Install photocell lead (66) into flame detector holder (93) by aligning rubber tab on photocell lead with slot in of the
flame detector holder, 3 o’clock position. Ensure photocell lead is seated. (See Figure 5-12).
3. Connect quick disconnect wire connector (blue and brown wire connector) onto ignition control assembly (53)
(see Figure 5-11).
MAINTENANCE, and REPAIR PROCE
DURES 5-17 DHS SYSTEMS LLC
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