SECTION C: COMBUSTION AND VENTILATION AIR

COMBUSTION AND VENTILATION AIR (Indoor Units)

The heater must be supplied with sufficient quantities of non-contaminated air to support proper combustion and equipment ventilation. Combustion air can be supplied via conventional venting, where combustion air is drawn from the area immedi- ately surrounding the heater, or via direct vent, where combustion air is drawn directly from outside. All installations must comply with the requirements of NFGC (U.S.), B 149.1 and .2 (Canada), and all local codes.

CAUTION:

Combustion air must not be contaminated by corrosive chemical fumes which can damage the heater and void the warranty. See appendix A.

DIRECT COMBUSTION AIR

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

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

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

(a)All Air from Inside the Building. The confined space shall be provided with two permanent openings communicating directly with an additional room(s) of sufficient volume so that the combined volume of all spaces meets the criteria for an unconfined space. The total input of all gas utilization equipment installed in the combined space shall be considered in making this determination. Each opening shall have a minimum free area of 1 square inch per 1,000 Btu per hour (22 cm2 per kW) of the total input rating of all gas utilization equipment in the confined space, but not less than 100 in.² (645 cm2). One opening shall commence within 12 in. (30 cm) of the top, and one opening shall commence within 12 in. (30 cm) of the bottom, of the enclosure. The minimum dimension of air openings shall be not less than 3 in. (8 cm) in any direction.

(b)All Air from Outdoors. The confined space shall communicate with the outdoors in accordance with methods 1 or 2. The minimum dimension of air openings shall not be less than 3 in. (8 cm) in any direction. Where ducts are used, they shall be of the same cross-sectional area as the free area of the openings to which they connect.

1.Two permanent openings, one commencing within 12in. (30 cm) of the top, and one commencing within 12in. (30 cm) of the bottom, of the enclosure shall be provided. The openings shall communicate directly, or by ducts, with the outdoors or spaces (crawl or attic) that freely communicate with the outdoors.

a. Where directly communicating with the outdoors or where communicating to the outdoors through vertical ducts, each opening shall have a minimum free area of 1 sq in. per 4000 Btu per hr (5.5 cm2 per kW) of total input rating of all equipment in the enclosure.

b. Where communicating with the outdoors through horizontal ducts, each opening shall have a minimum free area of 1 sq in. per 2000 Btu per hr (11 cm2 per kW) of total input rating of all equipment in the enclosure.

2.One permanent opening, commencing within 12 in. (30 cm) of the top of the enclosure, shall be permitted where the equipment has clearances of at least 1 in. (2.5 cm) from the sides and back and 6 in. (16 cm) from the front of the appliance. The opening shall directly communicate with the outdoors or shall communicate through a vertical or horizontal duct to the outdoors or spaces (crawl or attic) that freely communicate with the outdoors, and shall have a minimum free area of:

a. 1 sq in. per 3000 Btu per hr (7 cm2 per kW) of the total input rating of all equipment located in the enclosure, and b. Not less than the sum of the areas of all vent connectors in the confined space.

WARNING:

Do not use one permanent opening method if the equipment room is under negative pressure condition or the equipment is common vented with other gas-fired appliances.

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Raypak 122-322 Section C Combustion and Ventilation AIR, Combustion and Ventilation AIR Indoor Units
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122-322 specifications

Raypak 122-322 is a cutting-edge pool and spa heater designed for optimal performance and efficiency. Known for its robust construction and reliable heating capabilities, this heater has become a preferred choice among pool owners.

One of the standout features of the Raypak 122-322 is its advanced copper fin tube heat exchanger. This innovative technology enhances the heater's efficiency by maximizing heat transfer while minimizing energy consumption. By efficiently circulating the water through the heat exchanger, the Raypak 122-322 quickly raises the temperature, allowing for an enjoyable swimming experience regardless of the weather.

The heater is equipped with a digital control system that allows for precise temperature adjustments. This user-friendly interface makes it easy to set and maintain the desired water temperature, promoting user convenience. The digital controls also provide diagnostic features, which simplify troubleshooting and maintenance, ensuring the heater operates smoothly for years to come.

Safety is a crucial aspect of the Raypak 122-322. It comes with a series of safety features, including a flame rollout switch, high limit switch, and a pressure switch that ensures the unit operates safely under various conditions. This focus on safety provides peace of mind for users, knowing that their heating system is designed with protective measures in place.

The Raypak 122-322 is environmentally friendly, designed to use less energy compared to conventional heating systems. Its efficient performance not only reduces operational costs but also lessens the overall environmental impact, making it a responsible choice for conscious consumers.

With a compact design, the Raypak 122-322 can fit easily into various installation spaces, making it versatile for numerous residential or commercial settings. Additionally, the unit is built with durable materials resistant to corrosion and weather conditions, ensuring longevity and minimal maintenance requirements.

Overall, the Raypak 122-322 stands out in the market due to its advanced features, safety mechanisms, energy efficiency, and ease of use. It exemplifies a perfect blend of innovation and reliability, making it an exceptional option for anyone looking to enhance their pool or spa experience.
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