For installations in extremely cold climate, it is re- Direct Vent - Vertical quired that:

1. The vent must be installed with a slight upward slope of not more than 1/4 inch per foot of hori- zontal run to the vent terminal. In this case, an ap- proved condensate trap must be installed per ap- plicable codes.

2. The intake vent must be insulated through the length of the horizontal run.

Termination

The flue direct vent cap MUST be mounted on the ex- terior of the building. The direct vent cap cannot be installed in a well or below grade. The direct vent cap must be installed at least 1 ft above ground level and above normal snow levels.

The direct vent cap MUST NOT be installed with any combustion air inlet directly above a direct vent cap. This vertical spacing would allow the flue products from the direct vent cap to be pulled into the combus- tion air intake installed above.

This type of installation can cause non-warrantable problems with components and poor operation of the heater due to the recirculation of flue products. Multi- ple direct vent caps should be installed in the same horizontal plane with a 4 ft clearance from the side of one vent cap to the side of the adjacent vent cap(s).

Combustion air supplied from outdoors must be free of particulate and chemical contaminants. To avoid a blocked flue condition, keep the vent cap clear of snow, ice, leaves, debris, etc.

WARNING: No substitutions of flue pipe or vent cap material are allowed. Such substitutions would jeopardize the safety and health of inhabitants.

Note: When vertical height exceeds 25 ft, consult

factory prior to installation.

Fig. 27: Direct Vent - Vertical

Installation

These installations utilize the heater-mounted blower to draw combustion air from outdoors and force the heated flue products through the vent pipe under posi- tive pressure. The vent material must be in accor- dance with the above instructions for vent materials. Vent material must be listed by a nationally recognized test agency.

The connection from the appliance flue to the stack must be as direct as possible and should be the same size or larger than the vent outlet.

See Table L for Category I venting guidelines.

It is recommended that in colder climates, the intake vent be insulated.

Termination

The flue terminal should be vertical and should termi-

The stainless steel flue direct vent cap must be fur-

nate outside the building at least 2 ft above the high-

nished by the heater manufacturer in accordance with

est point of the roof within 10 ft. The vent cap should

its listing (sales order option D-15).

have a minimum clearance of 4 ft horizontally from and

 

Use only the special gas vent pipes listed for use with

in no case above or below (unless a 4 ft horizontal dis-

tance is maintained) electric meters, gas meters, reg-

Category III gas burning heaters, such as the AL29-4C

ulators and relief equipment. The distance of the vent

stainless steel vents offered by Heat Fab Inc. (800-

terminal from adjacent public walkways, adjacent

772-0739), Protech System, Inc. (800-766-3473) or Z-

buildings, open windows and building openings must

Flex (800-654-5600). Pipe joints must be positively

be consistent with the NFGC (U.S.) or B149.1

sealed. Follow carefully the vent manufacturer’s instal-

(Canada).

lation instructions.

 

32

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Raypak 302A-902A manual Direct Vent Vertical
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302A-902A specifications

The Raypak 302A-902A is a highly regarded pool and spa heater, known for its efficiency and reliability in delivering warmth to residential and commercial aquatic applications. This heater stands out due to its robust design, advanced technology, and user-friendly features.

One of the key characteristics of the Raypak 302A-902A is its dual fuel capability, which means it can run on either natural gas or propane. This flexibility allows users to choose their preferred fuel type, contributing to operational efficiency and cost-effectiveness. With a BTU output ranging from 302,000 to 902,000, the Raypak heater is capable of quickly heating large volumes of water, making it ideal for pools, spas, and hot tubs.

The heater incorporates advanced technology such as a stainless steel heat exchanger, which not only ensures excellent thermal conductivity but also promotes durability against corrosion. This is especially advantageous in harsh environments, where exposure to chemicals can significantly impact the lifespan of traditional copper heat exchangers. The Raypak 302A-902A's heat exchanger is designed to withstand the rigors of constant use while maintaining high performance levels.

Another prominent feature of the Raypak 302A-902A is its digital display control system, which simplifies the operation and monitoring of the heater. Users can easily set and adjust temperatures, as well as access diagnostic information, all through an intuitive interface. This digital control not only enhances user experience but also aids in the timely maintenance of the unit.

Energy efficiency is another major selling point of the Raypak 302A-902A. The heater is designed with environmentally friendly practices in mind, utilizing a low NOx burner that minimizes harmful emissions. This not only meets environmental regulations but also makes it a greener alternative for heating needs.

In terms of installation, the compact design of the Raypak 302A-902A allows for versatile placement options, whether in a residential backyard or a commercial environment. Its user-friendly installation process ensures that homeowners and businesses alike can enjoy the benefits of heated water with minimal hassle.

Overall, the Raypak 302A-902A is an exemplary choice for anyone seeking a high-quality, efficient, and flexible pool and spa heating solution. Its combination of robust engineering, advanced technology, and user-focused features solidifies its position as a leader in the market, promising effective heating for years to come. Whether for personal enjoyment or commercial use, this heater delivers exceptional performance that meets diverse heating needs.
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