Natural Gas Supply for Model 3VH19A, Ventilation

Dayton Operating Instructions and Parts Manual

Model 3VH18A - Propane Model 3VH19A - Natural Gas

Natural Gas Supply for Model 3VH19A

You must furnish the natural gas supply and the connections to the heater.

Regulate the natural gas supply down from a minimum 6 inches water column to a maximum of 1/2 psi. The natural gas supply capacity should be able to supply a minimum of 100 cubic feet of gas at pressure for each heater connected to the system.

Consult your natural gas supplier for proper sizing of the natural gas supply lines.

Follow all local ordinances and codes. In the absence of local ordinances and codes, refer to the National Fuel Gas Code Handbook, NFPA54/ANSI Z223.1 and the Natural Gas Installation Code, CAN/CGA B149.2.

Ventilation

Provide at least a 3-square-foot

opening of fresh, outside air while running heater. If proper fresh, outside air ventilation is not provided, carbon monoxide poisoning can occur. Provide proper fresh, outside air ventilation before running heater.

FRESH OUTSIDE AIR OPENING REQUIREMENTS

Heater Size	Square feet opening
100,000 Btu/Hr	3.0

Installation

Review and understand the

warnings in the General Safety Infor- mation section. They are needed to safely operate this heater. Follow all local codes when using this heater.

Test all gas piping and connections for

leaks after installation or servicing. Never use an open flame to check for a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak. Correct all leaks at once.

PROPANE MODEL 3VH18A

1.Provide propane supply system (See Propane Supply).

2.Connect fuel gas fitting on hose/regulator assembly to propane tank(s). Turn fuel gas fitting counterclockwise into threads on tank. Tighten firmly using a wrench.

IMPORTANT: Tighten regulator with vent pointing down. Pointing vent down protects regulator from weather damage.

Supply	Fuel Gas Hose
Valve	Fitting

Regulator

Vent (pointing

down)

Propane Tank

Figure 3 - Regulator With Vent Pointing Down

3.Connect hose to the valve inlet. Tighten firmly using a wrench. You must use the regulator supplied with heater even if propane tank has one.

Valve Inlet

Hose

Figure 4 - Hose and Valve Inlet

4.Open propane supply valve on propane tank(s) slowly.

NOTE: If not opened slowly, excess-flow check valve on propane tank may stop gas flow. If this happens, close propane supply valve and open again slowly.

5.Check all connections for leaks. Apply mixture of liquid soap and water to gas joints. Bubbles forming show a leak that must be corrected.

Never use an open flame to check for

a leak. Apply a mixture of liquid soap and water to all joints. Bubbles forming show a leak that must be corrected. Correct all leaks at once.

6. Close propane supply valve (See page 4).

NATURAL GAS MODEL 3VH19A

1.Provide natural gas supply system.

2.Install plumbing to a low pressure natural gas source. The source must be regulated to 1/2 psi maximum 3/4 inch i.d. hose or flexible connector not over 10 feet long.

3.Be sure to use thread sealing com- pound when connecting the hose to the heater at the 1/2 NPT fitting at the regulator inlet. Tighten all fittings with a wrench.

Hose

Figure 5 - Hose and Valve Inlet

Version B - For Reduction

G016.J

3VH19A, 3VH18A specifications

Dayton 3VH18A and 3VH19A are advanced ventilation systems designed to meet the needs of various industrial and commercial applications. Both units are part of a series that prioritizes energy efficiency, reliability, and versatile performance, making them suitable for everything from warehouses to manufacturing facilities.

The Dayton 3VH18A is a direct drive fan with a robust motor that operates at a speed of 1,050 RPM, providing an airflow capacity of approximately 1,400 CFM. Its simple yet effective design enables effective air circulation, ensuring that spaces are adequately ventilated. The fan is equipped with a lightweight but durable metal housing, which can withstand the rigors of continuous operation.

In comparison, the Dayton 3VH19A features a slightly higher airflow capacity of 2,300 CFM, making it ideal for larger spaces. This fan also operates at 1,050 RPM, but its larger diameter impeller allows it to push a greater volume of air, enhancing its efficiency. Both models incorporate high-quality ball bearings, promoting longevity and low maintenance needs.

One of the standout technologies of both 3VH18A and 3VH19A is their energy efficiency. The fans are designed to minimize power consumption while maximizing airflow, resulting in lower operational costs for end-users. They also adhere to stringent industry standards for efficiency and safety, making them a reliable choice for various applications.

Another feature is their versatility in installation options. Both units can be mounted on walls or ceilings, allowing for flexible positioning depending on the specific ventilation requirements of a space. Additionally, they are compatible with various control systems, enabling users to integrate them seamlessly into existing HVAC systems for optimized climate control.

In terms of noise levels, both the Dayton 3VH18A and 3VH19A operate quietly, which is essential in environments where noise reduction is a priority, such as schools and healthcare facilities. This focus on low noise output contributes to a more comfortable environment for occupants and workers.

Overall, Dayton 3VH18A and 3VH19A models stand out due to their combination of powerful airflow, energy efficiency, and quiet operation. These features make them valuable assets for enhancing indoor air quality and ensuring comfort in a range of settings. Whether for industrial use or commercial applications, these ventilation systems fulfill the vital role of effective air management, contributing to healthier environments.