AIR Flow Adjustments

1.To properly adjust the venter air flow, loosen the inlet ring screws and open the choke plate approximately 1/2 to 3/4 open. (See Figure 9) Start the heating

appliance following the manufacturer specified procedure, and set the thermostat to call for heat.

2. After the system has operated for several minutes to stabilize the exhaust gas temperature, check for air flow at the draft hood or the heating appliance outlet using a velocity meter, draft meter, or match test procedure.

	3. Adjust the venter choke plate inward or outward to obtain the minimum draft
	necessary to maintain venting. Then increase the draft slightly (Approximately
	10% over minimum flow rate) to ensure proper venting during any variations in	Figure 9
	venter performance, such as wind load or house depressurization.	Figure 9

4.Secure the choke plate into position by tightening the screws on the inlet collar (See Figure 9)

GENERAL INSTALLATION INSPECTION

Follow recommended procedures for safety inspection of a heating appliance in accordance with the National Fuel Gas Code A.N.S.I. Z223.1. The following procedure will help in evaluation of the venting system. It is intended as a guide to aid in determining that the appliance is properly installed and is in a safe condition for continuous use. This is a generalized procedure, which cannot anticipate all situations. Accordingly, in some cases deviation from this procedure may be necessary to determine safe operation of the equipment. If it is determined that a condition which could result in unsafe operation exists, the appliance should be shut off and the owner advised of the unsafe conditions. Corrections must be made prior to allowing continuous operation. The following steps should be taken in making a safety inspection.

1.Visually inspect the venting system for proper size and determine that there is no blockage, restriction, leakage, corrosion, or other deficiencies, which could cause unsafe operation.

2.To the extent possible, close all building doors, windows, and all doors to the room in which the heating appliance is located. Turn on clothes dryers and any exhaust fans so that they operate at maximum speed. Do not operate a summer exhaust fan. Also close all fireplace dampers. If after completing steps 3 through 7 it is believed that sufficient combustion air is not available, refer to the National Fuel Gas Code A.N.S.I. Z223.1 or any local codes for proper guidelines.

3.Place the appliance being inspected into operation. Follow the lighting instructions and adjust the thermostat so that the heating appliance will operate continuously.

4.Determine that the burner is operating properly and that the main burner ignition functions satisfactorily, by interrupting the electrical power of the appliance in any safely convenient manner. Test the burner safety device to determine if it is operating properly by extinguishing the pilot or disconnecting the flame safety circuit.

5.Visually determine that the main burner is burning properly, i.e. no floating, lifting, or flashbacks. Adjust the primary air shutter as required by the appliance manufacturer. If the appliance is equipped with high and low flame control or flame modulation, check for proper main burner operation at both flame levels.

6.Test for exhaust gas spillage at the draft hood or the barometric draft control after approximately 5 minutes of main burner operation. Use a draft meter or flame or smoke from match, candle or cigarette.

7.Turn on all fuel burning appliances within the same room so that they operate at their maximum capacity. Then repeat Steps 5 and 6.

8.Return all doors, windows, exhaust fans, fireplace dampers, and any other fuel burning appliances to their previous condition.

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PVU-300 specifications

Field Controls PVU-300 is a highly esteemed device in the realm of indoor air quality management, particularly designed for residential and light commercial applications. This innovative product excels in providing a comprehensive solution for ventilating spaces while ensuring optimal comfort and air quality.

One of the main features of the PVU-300 is its capability to deliver fresh outdoor air efficiently into a building while exhausting stale indoor air. This is crucial for maintaining a healthy living or working environment. The unit comes equipped with multiple airflow configurations, allowing it to adapt seamlessly to various building sizes and layouts.

The PVU-300 utilizes advanced demand control ventilation technology, which adjusts ventilation rates based on the actual occupancy and indoor air quality needs. This not only enhances comfort but also improves energy efficiency, as the system reduces unnecessary energy consumption during periods of low occupancy.

Furthermore, the PVU-300 is designed with intuitive controls that allow for easy operation and monitoring. The user-friendly interface simplifies adjustments and settings, ensuring that users can easily manage their ventilation needs. This device is compatible with a range of sensors, enabling it to work in conjunction with CO2 and humidity controls, further optimizing performance.

In terms of construction, the PVU-300 is built with durability in mind. Its robust design ensures longevity and reliable operation in various environmental conditions. The unit also boasts a compact footprint, making it suitable for installation in tight spaces without compromising airflow performance.

The technology behind the PVU-300 includes high-efficiency fans that minimize noise levels while maximizing airflow. This ensures that the device operates quietly, providing a comfortable environment without distracting sounds.

Installation of the PVU-300 is straightforward, thanks to its flexible duct design and user-friendly mounting options. This efficiency not only saves time but also reduces labor costs associated with installation.

In conclusion, the Field Controls PVU-300 represents a significant advancement in ventilation technology, combining energy efficiency, user-friendliness, and adaptability to diverse environments. Its features and technological innovations make it an ideal choice for enhancing indoor air quality, ensuring spaces are both comfortable and healthy for occupants.