Heater Sequence of Operation

If all limits are satisfied and there is a call for heat:

1.The internal heater primary pump will start and begin circulating water in the heater’s primary heat exchanger and the injector pump(s) will be pow- ered and enabled.

2.The blower is powered and goes through a 15 sec- ond prepurge from when air flow is proven by closure of the blower suction air pressure switch.

3.The igniter will be powered and once proven will heat up for 20 seconds.

4.The gas valve is then energized for a 4 second trial for ignition period. Trial for ignition is fixed at 50% input. The heater is allowed to modulate once flame is proven and the firing rate will adjust to match the load based on the configuration and settings of the temperature control or external input.

5.As the water approaches 120°F entering the pri- mary heat exchanger the injector pumps will begin feeding water from the system into the heater, operating to maintain 120°F minimum into the pri- mary heat exchanger.

6.Once the heat demand is satisfied the gas valve will close and the blower will run a 30-second post purge. The heater pump will continue to circulate water for 0 to 10 minutes depending on the pump delay setting on the Raypak modulating tempera- ture control.

Ignition Module

When additional heat is needed, the combustion air blower starts to purge air from the combustion cham- ber for 15 seconds. On proof-of-air flow, the air-proving switch closes and the igniter is energized. To ensure safe operation, the gas valve cannot open until the igniter is verified. The main burner is automat- ically lit when the device is powered and pre-purged. The heater performs its own safety check and opens the main valve only after the igniter is proven to be capable of ignition. The standard ignition module will attempt to light three times before locking out. To reset it, turn off power to the heater, wait 30 seconds and re- apply power.

Fig. 41: Ignition Module

The optional single-try ignition module will lock out after failing to light one time. To reset it, press and release the small, recessed black push button located inside of the cut-out on the lower right-hand corner of the ignition module case. Turning off the power to the heater WILL NOT reset the single-try ignition module.

38

Page 37 Page 39
Page 38
Image 38
Raypak 1005 operating instructions Heater Sequence of Operation, Ignition Module
Page 37 Page 39

1005 specifications

Raypak is a prominent name in the heating industry, known for its innovative and efficient heating solutions for residential and commercial applications. The models 2005, 1005, and 1505 are notable offerings from Raypak, each designed to provide reliable performance, energy efficiency, and user-friendly operation.

The Raypak 2005 model stands out for its robust construction and high efficiency. It utilizes advanced technology to ensure consistent heating and reliability. With a high-capacity output, the 2005 is ideal for larger pools and spa applications, efficiently maintaining desired temperatures even during colder months. Its digital control system allows for precise temperature settings, enabling users to customize their heating needs effectively.

The 1005 model is an excellent choice for medium-sized pools and spas, offering a perfect balance of power and energy efficiency. One of its key features is the ability to operate quietly, making it suitable for residential areas where noise can be a concern. The 1005 employs a reliable gas burning system that maximizes fuel efficiency and provides fast heating. Its compact design also makes it easy to install, saving space while delivering exceptional performance.

The Raypak 1505 model is designed for versatility, catering to a wide range of heating requirements. One of its standout characteristics is its corrosion-resistant heat exchanger, which ensures long-lasting performance even in harsh environments. The 1505 also incorporates a user-friendly digital interface, allowing for easy operation and monitoring of temperature settings. It supports both natural gas and propane, providing flexibility to users based on their energy source preferences.

All three models—the 2005, 1005, and 1505—benefit from Raypak's commitment to energy efficiency. They are designed to meet stringent environmental standards while minimizing operational costs for the user. Additionally, their reliable safety features, such as pressure switches and safety valves, ensure safe operation across various conditions.

In summary, Raypak's 2005, 1005, and 1505 models exhibit a combination of efficiency, durability, and user-friendliness. With their advanced technologies and adaptable designs, these heaters are suitable for a wide array of heating applications, providing users with reliable solutions for their heating needs. Whether for residential or commercial use, Raypak's commitment to quality and innovation makes these models excellent choices for anyone seeking dependable heating solutions.
Top Page Image Contents