Raypak 130A - Manual (Page 24)

24
Gas Valve Removal
1. Remove burner tray from heater as described in
the Burner Tray Removal section.
2. Disconnect pilot tubing (if removing a Millivolt
valve).
3. Disconnect wires to gas valve.
4. Unscrew gas valve from manifold.
5. Reverse above procedure to reinstall.
Main Burner & Orifice Removal
1. Remove burner tray.
2. Remove screws from rear burner hold-down
bracket.
3. Lift burners from slotted spacers and slide from ori-
fices. Clean with a wire brush.
4. Orifices usually do not need to be replaced. To
clean, run either copper wire or wood toothpick
through orifice. Do not enlarge hole. To remove ori-
fice, use a socket wrench and remove from
manifold. Do not over-tighten when reinstalling.
5. Reverse above procedure to reinstall.
NOTE: If the heat exchanger is sooted badly, the
burner hold-down bracket and spacer can become
distorted from direct-flame impingement and this
usually necessitates replacement of these parts.
ORIFICES MUST BE PARALLEL WITH BASE
TOLERANCE OF +2° -0°
IGNITER
BETWEEN IGNTER & BURNER
PORTS 0.375” ± 0.125”
BURNER PORTS
Fig. 31: Igniter Position to Burners
Igniter Removal & Cleaning
(Electronic)
1. Disconnect high tension wire from igniter.
2. Remove (2) screws that mount the igniter to the
burner tray.
3. Remove igniter from burner tray.
4. Reverse above procedure to reinstall.
Ignition Control Fault Codes
The ignition control fault codes listed in Table H can be
used to troubleshoot ignition problems.
Fig. 32: Direct Spark Igniter
Code Condition
Steady On Power applied, control OK
Steady Off No power or control hardware fault
1 Flash Ignition lockout from too many trials
2 Flashes
Ignition lockout from too many flame
losses in single call for heat
3 Flashes
Control hardware/software fault
detected
Table H: Ignition Control Fault Codes