PILOT SAFETY (Millivolt System)

The 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.

PILOT SAFETY (IID Units) ELECTRIC IGNITION

The heater employs a pilot safety which closes the main gas valve within 8/10ths of a second whenever the pilot flame is interrupted. Pilot flame is automatically lit when the device is powered. Unit performs its own safety check and opens the main valve only after the pilot is proven to be lit.

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 unit, and (2) screws that secure gas valve to jacket.

6.Disconnect wires that terminate at gas valve.

7.Slide out burner tray.

8.Reverse above procedure to reinstall.

GAS VALVE REMOVAL

1.Shut off gas supply to the heater. Remove gas piping to gas valve inlet.

2.Disconnect wires, pilot tubing and bleed line, if required.

3.Turn vertical gas pipe from manifold slightly and unscrew gas valve.

4.Reverse above procedure to re-install.

MAIN BURNER AND ORIFICE REMOVAL

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

2.Remove screws and burner hold down bracket.

NOTE: If the heat exchanger is sooted badly, the burner hold down bracket and spacer can become distorted from direct flame impingement and this usu- ally necessitates replacement of these parts.

3.Lift burners from slotted spacers and slide from orifices. 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 orifice, use a socket wrench and remove from manifold. DO NOT overtighten when reinstalling.

Burner Hold Down Bracket

Burners

Fig. # 8057.0

PILOT REMOVAL AND CLEANING

1.Disconnect pilot tubing, and wires from gas valve.

2.Remove pilot assembly from burner tray.

3.Remove pilot from bracket.

4.Remove pilot orifice and air opening (Honeywell MV unit only), and clean with wire or small brush. CAUTION! Do not enlarge hole in pilot orifice.

5.Reverse above procedure to reinstall.

PilotPilot

Air

Opening

Orifice

Orifice

HONEWELL PILOT

ROBERTSHAW PILOT

Fig. # 8045.1

Fig. # 8102.0

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Raypak 155C Burner Drawer Removal, GAS Valve Removal, Main Burner and Orifice Removal, Pilot Removal and Cleaning
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155C specifications

The Raypak 155C is a versatile and efficient heater designed for both residential and commercial applications. Renowned for its robust construction and reliable performance, this unit is an excellent choice for pool and spa heating as well as for providing comfortable ambient temperatures in enclosed or outdoor spaces.

One of the standout features of the Raypak 155C is its innovative copper heat exchanger, which is designed for maximum heat transfer efficiency. This technology allows for rapid heating capabilities, ensuring that water reaches the desired temperature quickly and effectively. The heat exchanger is also resistant to corrosion, thanks to its durable design, prolonging the unit's life and maintaining performance over time.

Designed with user convenience in mind, the Raypak 155C features an intuitive digital control system. This user-friendly interface allows for easy temperature adjustments and monitoring, giving users precise control over their heating requirements. An integrated diagnostic system is also included, providing real-time feedback on the heater's performance and alerting users to any potential issues, which helps in proactive maintenance.

Incorporating advanced safety features, the Raypak 155C includes a high limit switch and a water flow switch, ensuring safe operation at all times. These safety mechanisms prevent overheating and dry firing, protecting both the heater and the connected plumbing system.

The Raypak 155C is engineered for energy efficiency, meeting and exceeding industry standards. With a compact design, it ensures easy installation and integration into existing setups, making it a favorable choice for various applications. Its quiet operation adds to user comfort, allowing it to be installed in residential settings without causing disturbances.

With a heating capacity of 155,000 BTU, the Raypak 155C is capable of effectively heating larger pools and spas, making it ideal for homes with extensive water features. The heater is designed to run on natural gas or propane, providing flexibility based on user preferences and availability.

Overall, the Raypak 155C combines state-of-the-art technology with practical features, making it one of the top choices for those looking to enhance their pool experience or improve comfort levels in their outdoor areas. Its reliability, efficiency, and user-friendly features make it a valuable investment for any property.
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