APPENDIX

Inside Air Contamination

All heaters experience some condensation during start-up. The condensate from flue gas is acidic. Combustion air can be contaminated by certain vapors in the air which raise the acidity of the condensate. Higher acidity levels attack many materials including stainless steel, which is commonly used in high effi- ciency systems. The heater can be supplied with corrosion-resistant, non-metallic intake air vent materi- al. You may, however, choose to use outside combustion air for one or more of these reasons:

1.Installation is in an area containing contaminants listed below which will induce acidic condensation.

2.You want to reduce infiltration into your building through openings around windows and doors.

3.You are using AL29-4C stainless steel vent pipe, which is more corrosion-resistant than standard metallic vent pipe. In extremely contaminated ar- eas, this may also experience deterioration.

Products causing contaminated combustion air:

spray cans containing chloro/fluorocarbons

permanent wave solutions

chlorinated waxes/cleaners

chlorine-based swimming pool chemicals

calcium chloride used for thawing

sodium chloride used for water softening

refrigerant leaks

paint or varnish removers

hydrochloric acid/muriatic acid

cements and glues

antistatic fabric softeners used in clothes dryers

chloride-type bleaches, detergents, and cleaning solvents found in household laundry rooms

adhesives used to fasten building products

similar products

Areas where contaminated combustion air commonly exists:

dry cleaning/laundry areas

metal fabrication plants

beauty shops

refrigeration repair shops

photo processing plants

auto body shops

plastic manufacturing plants

furniture refinishing areas and establishments

new building construction

remodeling areas

open pit skimmers

Check for areas and products listed above before in- stalling heater. If found:

remove products permanently, OR

install TruSeal direct vent

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Raypak 902B, 302B manual Appendix, Inside Air Contamination

302B, 902B specifications

Raypak is a prominent name in the heating industry, particularly known for its advanced technology and robust design in residential and commercial heating solutions. Two of their notable models, the Raypak 302B and 402B, exemplify innovation and efficiency in hydronic heating systems, designed to meet diverse needs while ensuring optimal performance.

The Raypak 302B and 402B are high-efficiency boilers that utilize gas-fueled systems. The 302B model has a heating capacity of 302,000 BTU/h, while the 402B boasts a maximum capacity of 402,000 BTU/h. This range of heating output makes these models suitable for a variety of applications, from residential heating needs to larger commercial spaces that require a reliable heat source.

One of the standout features of the Raypak 302B and 402B is their use of fire-tube heat exchanger technology. This design promotes efficient heat transfer and allows for lower emissions, thus minimizing the environmental impact. The fire-tube design also contributes to a longer lifespan and reduced maintenance costs, making these boilers a cost-effective solution over time.

Equipped with advanced control systems, the Raypak 302B and 402B ensure precise temperature regulation and improved energy usage. The digital display provides real-time feedback and diagnostics, enhancing user experience and simplifying troubleshooting. These models are also compatible with various building management systems, providing users with versatility in integration to optimize building performance.

In addition to their technological advancements, these boilers are designed with user safety and convenience in mind. They include features such as built-in safety controls, easy access for service and maintenance, and a compact footprint to fit into tight spaces. Their robust construction ensures durability, which is crucial for systems that operate under high demand.

Moreover, both models have been engineered to succeed in various climates, making them reliable choices for users in diverse geographical locations. With their energy-efficient operation, reliable performance, and advanced features, the Raypak 302B and 402B embody quality and innovation in the heating market, ensuring comfortable environments while lowering energy costs and environmental footprints.