Pilot Safety - Millivolt Models; Burner Tray Removal - Raypak 130A Operation Manual

3. Remove defective high limit and replace with a new high
limit.
4. Replace inspection panel.
P S - M
ILOT AFETY ILLIVOLT
Heaters equipped with the standing pilot (Millivolt system)
have pilot generators which act as a safety device to shut off
the flow of gas to the main burners and the pilot burner in
case the pilot flame is extinguished. The pilot burner must be
manually re-lighted to place the heater in operation again.
Refer to the lighting instructions provided on the heater label.
Orifice
Igniter
Orifice
M
ODELS
Rear Hold Down Bracket
Burner
Pilot
Shield
Figure 27. Millivolt Burner Tray Assembly.
Rear Hold Down Bracket
Burner
Figure 28. DSI Burner Tray Assembly.
B T R
URNER RAY EMOVAL
1. Shut off main electrical power switch to heater.
2. Shut off gas upstream of heater.
3. Remove front door.
4. Disconnect gas line from gas valve.
5. Remove (2) screws that mount burner tray to unit, and (2)
screws that secure gas valve to jacket.
6. Disconnect wires that terminate at gas valve.
7. Disconnect hi-tension wire from igniter.
8. Remove (1) screw that mounts ground wire to burner tray.
9. Slide out burner tray.
10. Reverse above procedure to reinstall.
Millivolt Pilot Assembly
(under Pilot Shield)
Millivolt Gas Valve
(Invensys shown)
Manifold
Pilot Lighter Tube
Orifice Placement Bracket
Pilot Bracket
Burner Tray Panel
DSI Gas Valve
(Honeywell shown)
Manifold
Orifice Placement Bracket
Burner Tray Panel
Service
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