LOW NOX HEATERS (CONTINUED)

6. Use a long 9/16” socket wrench to remove orifices from the gas manifold.

7. Reverse above procedure to reinstall.

IIDPILOT

Fig # 9477

Fig # 9362

LOW NOx BURNER TRAY ASSEMBLY

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. See burner removal proce- dure.

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. See burner drawer removal 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.

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# 9368

COMBUSTION FAN REMOVAL

1.Remove burner drawer. See burner drawer removal procedure.

2.Remove (4) screws the mount the combustion blower to the manifold assembly.

3.Reverse above procedure to reinstall.

38

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Raypak P-R185B To P-R405B, C-R185B To P-R405B, P-R185BL To P-R405BL, C-R185BL To C-R405BL, RP2100 manual Pilot Removal
Page 37 Page 39

P-R185B To P-R405B, C-R185B To P-R405B, P-R185BL To P-R405BL, C-R185BL To C-R405BL, RP2100 specifications

Raypak offers a comprehensive line of boilers and water heaters, notably the P-R185B to P-R405B and C-R185B to P-R405B series, along with the RP2100 model. These products are engineered for efficiency, reliability, and performance in both residential and commercial applications.

The P-R185B to P-R405B series features a range of input capacities from 185,000 to 405,000 BTU/h, making them suitable for various heating requirements. The P-R series is equipped with Raypak's patented Cupro-Nickel heat exchanger, which offers superior corrosion resistance and extended life in challenging water conditions. These units also utilize a sealed combustion system, allowing for efficient operation and reduced energy consumption by drawing air from outside the building.

The C-R185B to P-R405B boilers are specifically designed for commercial applications where reliability is critical. They incorporate similar features to the standard P-R series and are built to handle higher heating demands, making them ideal for larger facilities. The C-R series models are recognized for their durable construction and advanced control systems, offering precise temperature management and enhanced performance.

In addition to these series, the P-R185BL to P-R405BL and C-R185BL to C-R405BL models feature a low-NOx design to comply with stringent environmental regulations. This means they produce lower nitrogen oxides, making them an environmentally friendly option without sacrificing performance.

The RP2100 is another standout model, known for its robust design and cutting-edge technology. It boasts a high efficiency rating and is equipped with an intuitive digital control system, allowing users to monitor and adjust settings with ease. The RP2100 also features a modulating burner system, which adjusts the flame based on the heating demand, optimizing fuel usage and minimizing operational costs.

All Raypak models are designed with safety in mind, incorporating multiple safety features like thermal shutdowns and pressure relief valves. Their compact dimensions make installation straightforward, and the low maintenance requirements ensure longevity and consistent performance.

In summary, Raypak's P-R185B to P-R405B, C-R185B to P-R405B, P-R185BL to P-R405BL, and RP2100 series represent a commitment to quality and innovation in heating solutions, providing efficient and reliable options for both residential and commercial applications.
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