SECTION C: COMBUSTION AND VENTILATION AIR

COMBUSTION AND VENTILATION AIR (Indoor Units)

The boiler must be supplied with sufficient quantities of non-contaminated air to support proper combustion and equip- ment ventilation. Combustion air can be supplied via conventional venting, where combustion air is drawn from the area immediately surrounding the boiler, or via direct vent, where combustion air is drawn directly from outside. All installa- tions must comply with the requirements of NFGC for U.S., CAN/CGA B 149.1 and .2 for Canada, and all local codes.

DIRECT COMBUSTION AIR

If outside air is drawn through a vent pipe directly to the unit for combustion:

1.Install combustion air direct vent in accordance with Section J of this manual.

2.Provide for adequate ventillation of the space occupied by the boiler(s) by an opening(s) for ventillation air at the highest practical point communicating with the outdoors. The total cross sectional area shall be at least one (1) square inch of free area per 20,000 BTUH of total input rating of all equipment in the room when the opening is communicating directly with the outdoors or through vertical duct(s). The total cross sectional area shall be at least one (1) square inch of free area per 10,000 BTUH of total input rating of all equipment in the room when the opening is communicating with the outdoors through horizontal duct(s).

3.In cold climates, and to mitigate potential freeze-up, Raypak highly recommends the installation of a motorized sealed damper to prevent the circulation of cold air through the boiler during the non-operating hours.

CONVENTIONAL COMBUSTION AIR SUPPLY (FOR U.S. INSTALLATION ONLY)

All Air from Inside the Building. If all combustion air is drawn from the air inside the building (the mechanical equipment room does not receive air from outside):

1.The mechanical equipment room must be provided with two permanent openings communicating directly with additional room(s) of sufficient volume so that the combined volume of all spaces meets the criteria for an unconfined space. (An unconfined space is defined as a space whose volume is more than 50 cubic feet per 1,000 BTUH of the aggregate input rating of all appliances installed in that space.)

2.Each opening must have a minimum free area of one (1) square inch per 1,000 BTUH of the total input rating of all gas utilization equipment in the mechanical equipment room.

3.One opening must commence within twelve (12) inches of the top, and one opening must commence within twelve (12) inches of the bottom of the room.

4.Refer to NFGC, Part 5, for additional information.

All Air from Outdoors. If all combustion air is drawn from the air outside the building (the mechanical equipment room directly communicates with the outdoors), either of the following two methods can be used:

Method 1:

1.The mechanical equipment room must be provided with two permanent openings, one commencing within (twelve) 12 inches of the top, and one commencing within twelve (12) inches of the bottom of the room.

2.The openings must communicate directly, or by ducts, with the outdoors.

3.Each opening must have a minimum free area of one (1) square inch per 4,000 BTUH of total input rating of all equipment in the room when the opening is communicating directly with the outdoors or through vertical ducts. The minimum free area required for horizontal ducts is one (1) square inch per 2,000 BTUH of total input rating to all the equipment in the room.

4.Refer to NFGC, Part 5, for additional information.

Refer to Appendix A for additional information about combustion air quality.

10

Page 9 Page 11
Page 10
Image 10
Raypak 750, 500, 1000 installation instructions Section C Combustion and Ventilation AIR, Direct Combustion AIR
Page 9 Page 11

1000, 750, 500 specifications

Raypak is a renowned name in the heating industry, particularly known for its high-quality pool and spa heaters. Among their extensive product line, the Raypak 850, 500, 300, 400, and 700 models stand out for their reliability, efficiency, and cutting-edge technologies. Each model is designed to cater to different needs and applications while maintaining Raypak’s commitment to performance.

The Raypak 850 is designed for larger commercial pools or residential setups requiring high output. With a powerful heat exchanger made from copper and bronze, it ensures superior heat transfer and longevity. Its digital control system provides precise temperature regulation, enhancing user experience. Moreover, it features a durable construction with weather-resistant materials, ensuring lasting performance in various environments.

The Raypak 500 model offers a balance between efficiency and compactness. It features eco-friendly technology that reduces energy consumption without sacrificing performance. The integrated thermostat allows users to maintain consistent water temperatures, making it ideal for residential pools. This model is well-regarded for its user-friendly digital display, simplifying operation and monitoring.

For those needing a more moderate capacity, the Raypak 300 is an efficient choice. It combines robust engineering with an easy-to-use interface. Its advanced ignition system improves reliability while minimizing energy waste. The Raypak 300’s compact design allows for easy installation in various spaces, making it an excellent option for smaller pools.

The Raypak 400 heats water quickly and efficiently, making it suitable for both residential pools and spas. It features a high-capacity heating system that ensures optimal performance. With a clear LED display, users can easily monitor their settings, while the integrated diagnostics provide real-time feedback for maintenance and troubleshooting.

Lastly, the Raypak 700 model is known for its versatility and robust performance. It is equipped with advanced safety features, including a high limit switch and water flow detection mechanism, to ensure safe operation. The model's energy-efficient design enhances its eco-friendliness, making it a popular choice among environmentally conscious users.

Collectively, these Raypak models exemplify superior engineering, performance, and user-friendliness. Their innovative features ensure that they meet the varied demands of pool owners while providing reliable heating solutions for leisure and relaxation. Whether for commercial or residential use, the Raypak 850, 500, 300, 400, and 700 offer unmatched quality and efficiency.
Top Page Image Contents