Theory of Operation, Propane Supply, Installation

Dayton Operating Instructions and Parts Manual

3VG81

Dayton® Propane

Construction Heater

Theory of Operation

THE FUEL SYSTEM

The hose/regulator assembly attaches to the propane gas supply. The propane gas moves through the solenoid valve and out the nozzle.

THE AIR SYSTEM

The motor turns the fan. The fan pushes air into and around the combustion chamber. This air is heated and provides a stream of clean, hot air.

THE IGNITION SYSTEM

The direct spark ignitor (DSI) sends voltage to the ignitor, which ignites the fuel and air mixture.

THE SAFETY CONTROL SYSTEM

This system causes the heater to shut

Propane Supply

Propane gas and propane tank(s) must be provided by the user.

Use this heater only with a propane vapor withdrawal supply system. See Chapter 5 of the Standard for Storage and Handling of Liquefied Petroleum Gas, ANSI/NFPA 58. The local library or fire department will have this booklet.

The amount of propane gas ready for use from propane tanks varies. Two factors determine this amount:

1.The amount of propane gas in tank(s)

2.The temperature of tank(s)

The chart below shows the number of 100 pound tanks needed to run this heater.

Temperature (ºF)	Number of
at Tank	100 Lb. Tanks
32°	2
20°	2
10°	3
0°	3
-10°	Use larger tank
-20°	Use larger tank

Less gas is vaporized at lower tempera- tures. You may need two or more 100 pound tanks or one larger tank in colder weather. Your local propane gas dealer will help you select the proper supply system. The minimum surrounding-air temperature rating for each heater is -20°F.

Installation

down if the flame goes out.

TEMPERATURE CONTROL SYSTEM

Built-in thermostat allows heater to cycle on and off to maintain consistent area

temperature.Ignitor

Clean

Heated

Air Out (Front)

Combustion Nozzle

Chamber

Do not operate this product with any tank smaller than 100 pounds.

Fan Motor

Cool

Air

Power

Cord

On/Off Switch

Review and understand the

warnings in the Safety Information Section, pages 2 and 3. 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 installing 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.

1.	Provide propane supply system (See
	Propane Supply).
2.	Connect POL fitting on hose/regulator
	assembly to propane tank(s). Turn POL
	fitting counterclockwise into threads
	on tank. Tighten firmly using wrench.
	Tighten regulator with vent pointing

DSI	Solenoid
	Valve
Air for Combustion and	Fuel	Hose/
Heating		Regulator
Figure 3 - Cross Section Operational View		Assembly

down.

3. Connect hose to inlet connector.

Tighten firmly using a wrench.

3VG81 specifications

The Dayton 3VG81 is an innovative and highly efficient ventilation fan designed for various applications, including residential and commercial spaces. This product is known for its reliability and versatility, making it a preferred choice among engineers and contractors.

One of the main features of the Dayton 3VG81 is its powerful motor. The fan is equipped with a robust, energy-efficient motor that provides consistent airflow, ensuring optimal ventilation regardless of the setting. The motor is designed to operate quietly, making it suitable for environments where noise level is a concern, such as offices and libraries.

Another standout aspect of the Dayton 3VG81 is its compact and lightweight design. This makes it easy to install and reposition as needed. The unit is constructed with durable materials that enhance its longevity while maintaining a sleek appearance that can blend seamlessly with various interiors.

In terms of technology, the Dayton 3VG81 incorporates advanced airflow management features. The fan is designed with specially engineered blades that maximize air movement while minimizing energy consumption. This not only improves performance but also contributes to lower electricity bills, making it an eco-friendly option for consumers.

Moreover, the Dayton 3VG81 is equipped with variable speed control, allowing users to adjust the airflow according to their specific needs. This feature enhances user experience by providing flexibility and ensuring that the environment can be adapted to changing conditions, whether it be for heating, cooling, or venting purposes.

The fan also boasts an easy-to-use interface, simplifying the operation for users. LED indicators provide clear visibility of the fan's status and settings, enhancing the overall user experience.

Safety is paramount with the Dayton 3VG81, and it comes with various safety features, including thermal overload protection which prevents the motor from overheating and ensures the longevity of the unit.

In summary, the Dayton 3VG81 is a versatile, quiet, and efficient ventilation solution with a range of features designed to enhance user experience and promote energy savings. Its durable construction, advanced technologies, and thoughtful design make it an excellent choice for those seeking reliable ventilation in a variety of settings. Whether for residential, commercial, or industrial use, the Dayton 3VG81 stands out in the market as a top choice for modern ventilation needs.