Raypak P-R185BL to P-R405BL Manuel d'utilisateur télécharger pdf (Page 38)

BURNER DRAWER REMOVAL

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 the

base of the unit, and (2) screws that secure gas

valve to jacket.

6. Disconnect wires that terminate at gas valve.

7. Unscrew (4) screws that secure the control box.

8. Disconnect pilot wire from the ignition module.

9. Disconnect wire harness from the combustion blower.

10. Carefully slide out the burner tray assembly.

11. Reverse above procedure to reinstall.

GAS VALVE REMOVAL

1. Remove burner drawer, following above procedure.

2. Disconnect, pilot tubing from gas valve.

3. Turn vertical gas pipe from manifold slightly and un-

screw gas valve.

4. Reverse above procedure to reinstall.

MAIN BURNER AND ORIFICE REMOVAL

1. Remove burner drawer, following above procedure.

2. Remove pilot. See pilot removal procedure.

3. Remove (8) total screws from the hold down brack-

ets, front and rear of tray.

4. Remove (8) total screws from the left and right sides

of the manifold assembly. Detach the manifold as-

sembly from the burner tray assembly.

5. Remove burners by raising the bracket on the back

end of the burners up and out of their slots.

6. Use a long 9/16” socket wrench to remove orifices

from the gas manifold.

LOW NOx HEATERS (CONTINUED)

Fig # 9362

PILOT REMOVAL

1. Disconnect pilot tubing from gas valve.

2. Remove (4) screws from control box. Open the con-

trol box.

3. Remove the pilot wire from the ignition wire.

4. Remove (2) screws that mount the pilot bracket to

the air manifold assembly.

5. Pull the pilot bracket slightly, then drop and pull

downwards and outwards.

6. Reverse above procedure to reinstall. Make sure

the pilot bracket is all the way up on the pilot side,

see drawing below.

Fig # 9477

IID PILOT

LOW NOx BURNER TRAY ASSEMBLY

COMBUSTION FAN REMOVAL

1. Remove burner drawer. See Burner Drawer

Removal procedure on this page.

2. Remove (4) screws that mount the combustion

blower to the manifold assembly.

3. Reverse above procedure to reinstall.

7. Reverse above procedure to reinstall.

Fig# 9368

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 51 52

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Raypak P-R185BL to P-R405BL Manuel d'utilisateur Page 38

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