Horizontal Thru-wall Venting System (Category III) Installation

These installations utilize the heater-mounted blower to vent the combustion products to the outdoors. Combustion air is taken from the space and the vent is installed horizontally through the wall to the outdoors. Adequate combustion and ventilation air must be sup- plied in accordance with the NFGC or, in Canada, the B149 Installation Code.

The total length of the horizontal thru-wall exhaust vent system should not exceed one hundred (100) feet in length. If horizontal run exceeds 100 feet, an appro- priately sized extractor must be used. Each elbow used is equal to ten (10) feet of straight pipe. This will allow installation in one of the four following combina- tions.

·100’ of straight flue pipe.

·90' of straight flue pipe and one elbow.

·80' of straight flue pipe and two elbows.

·70' of straight pipe and three elbows.

·60' of straight pipe and four elbows.

The vent cap is not considered in the overall length of the venting system. The vent must be installed to pre- vent the flue gas leakage. Care must be taken during assembly to ensure that all joints are sealed properly and are airtight.

The horizontal portions of the vent shall also be sup- ported for the design and weight of the material employed to maintain clearances and to prevent phys- ical damage or separation of joints.

The vent must be installed to prevent the potential accumulation of condensate in the vent pipes. It is rec- ommended that:

a)The vent be installed with a slight downward slope of not more than 1/4" per foot of horizontal run to the vent terminal.

b)The vent be insulated through the length of the horizontal run.

For appliances installed in extreme cold climate, it is recommended that:

a)The vent be installed with a slight upward slope of not more than 1/4" per foot of horizontal run to the vent terminal. In this case, an approved conden- sate trap must be installed per applicable codes.

b)The vent be insulated through the length of the horizontal run.

Horizontal Thru-wall Direct Vent Termination

The flue exhaust direct vent cap MUST be mounted on the exterior 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 one (1) foot above ground level and above normal snow levels.

Multiple direct vent caps MUST NOT be installed with one combustion air inlet directly above a direct vent cap. This vertical spacing would allow the flue prod- ucts from the direct vent cap to be pulled into the combustion air intake installed above. This type of installation can cause non warrantable problems with components and poor operation of the unit due to the recirculation of flue products. Multiple direct vent caps should be installed in the same horizontal plane with a three (3) foot 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.

The flue exhaust direct vent cap must be furnished by the heater manufacturer in accordance with its listing. Use only the special gas vent pipes listed for use with Category III gas burning heaters, such as the stainless steel vent by Heat Fab Inc (800-772-0739), Protech Systems, Inc. (800-766-3473) or Z-Flex (800- 654-5600). Pipe joints must be positively sealed. Follow the vent manufacturers installation instructions carefully.

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Raypak HD401, HD101 manual Horizontal Thru-wall Direct Vent Termination

HD101, HD401 specifications

Raypak is renowned for its commitment to high-quality heating solutions, with the HD101 and HD401 models standing out in their product range. These units are designed specifically for commercial applications, providing reliable and efficient hydronic heating systems. The HD series embodies innovation while addressing the unique demands of larger spaces.

One of the main features of the HD101 and HD401 is their stainless steel construction, which ensures increased durability and resistance to corrosion. This design choice enhances the longevity of the units, making them ideal for various installations in commercial or industrial settings.

Both models are equipped with a high-efficiency heat exchanger that maximizes heat transfer while minimizing energy consumption. This feature is particularly significant in today’s environmentally conscious market, as it contributes to lower operating costs and reduced carbon footprints. The heat exchangers are engineered for easy maintenance, offering simplicity when service is required.

In terms of technology, the HD101 and HD401 include advanced digital controls that allow for precise temperature regulation. This user-friendly interface enables operators to easily manage and monitor heating parameters, facilitating optimal performance and energy management.

The models also feature modulating burners that adjust their output according to the heating demand. This capacity for modulation results in smoother operation and an overall increase in efficiency, as the burners can maintain consistent temperatures without excessive energy use.

Another noteworthy characteristic is their compatibility with various control systems, including BMS (Building Management Systems). This adaptability allows for seamless integration into existing infrastructure, providing users with greater versatility and control over their heating environments.

Both the HD101 and HD401 come with advanced safety features, including flame rollback protection and pressure monitoring, ensuring safe operation even in demanding conditions. Additionally, their compact design allows for easy installation in limited spaces while still providing powerful heating capabilities.

Ultimately, the Raypak HD101 and HD401 are exceptional choices for those in need of high-efficiency commercial heating solutions. With their robust construction, advanced technology, and user-friendly features, these models promise to deliver reliable performance and energy savings for years to come. Whether for a large facility or a specific industrial application, they stand ready to meet the heating challenges of today’s commercial landscape.