High Limits, Pilot Safety, High Limit Removal

PRESSURE SWITCH ADJUSTMENT:

1.With pump and heater on, turn adjustment knob (clockwise) until a click is heard from the gas valve.

2.Turn adjustment knob (counter clockwise) 1/4 turn.

3.Turn pump off and on several times. Heater should shut off immediately. If it does not, repeat steps above until proper adjustment is made.

Adjustment Knob

Fig. # 8069.1

Heat Exchanger Height

HIGH LIMITS

The heater is equipped with two automatic high limits. Both are set to open at 135°F.

NOTE: An erratic high limit is often characteristic of internal heat exchanger problem, i.e. scale buildup. Refer to troubleshooting section.

Fig. # 2009

HIGH LIMIT REMOVAL

1.	Shut off main electrical power switch to heater.
2.	Remove inspection panel.
3.	Remove defective high limit and replace with a new

5' Max.

Pool or Spa

high limit.

4. Replace inspection panel.

PILOT SAFETY

Heat Exchanger Height

Fig. # 8152.0s

NOTE: If heater is installed outside of the limits shown, a flow switch must be used in place of the pressure switch when mounted and wired adjacent to the heater.

TWO SPEED PUMPS

In some cases, the flow on the low-speed is insuf- ficient to operate the heater. This is apparent when the pressure switch cannot be further adjusted or if the heater makes banging noises. In these cases, the pump must be run at high speed when heating the water.

CAUTION: Do not operate the heater without the func- tion of a properly adjusted pressure switch.

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 relighted to place the heater in operation again. Refer to the lighting instruc- tions 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.

105B specifications

Raypak 105B is a well-engineered boiler designed for various heating applications. Known for its efficiency and reliability, the Raypak 105B is a preferred choice among professionals in both residential and commercial settings.

One of the main features of the Raypak 105B is its compact design. Measuring in at a size that allows for easy installation, it is ideal for locations where space is at a premium. The unit's lightweight materials contribute to a reduced load on structural components of buildings, making it an efficient option for retrofits and new installations alike.

The Raypak 105B operates on advanced technology that ensures optimal performance and energy efficiency. The unit boasts a high thermal efficiency rating, which translates to lower operational costs for users. Its innovative control system monitors and adjusts the heating output, ensuring that the boiler operates at peak efficiency while maintaining comfort.

Another significant characteristic of the Raypak 105B is its built-in hydrostat. This feature automatically controls water temperature, providing a safeguard against overheating and improving overall safety. The unit's durable stainless steel heat exchanger enhances the longevity of the product while also resisting corrosion, a common issue in boiler systems.

In terms of environmental considerations, the Raypak 105B is designed to meet or exceed industry standards for emissions. This not only helps users comply with regulations but also contributes to a reduced carbon footprint. Additionally, the natural gas or propane options add versatility in terms of fuel choice, catering to a wide range of applications.

Ease of maintenance is another advantage offered by the Raypak 105B. The unit is designed to provide straightforward access to key components, minimizing operational downtime when servicing is needed. This thoughtful design element supports both residential and commercial needs, ensuring reliability in various settings.

In summary, the Raypak 105B stands out due to its compact design, high thermal efficiency, advanced control systems, and robust safety features. With its focus on longevity, ease of maintenance, and environmental compliance, the Raypak 105B continues to be a leading choice for efficient heating solutions in diverse applications. Its reputation for reliability makes it a trusted option for those in need of dependable heating solutions.