Start-Up Procedure

1.Turn off power to the unit at the disconnect switch. Close all manual gas valves.

2.Check that all gas and electrical connections are weatherized.

3.Make sure that the combustion air inlet and the combustion blower discharge are free from obstructions.

4.Inspect the unit to make sure that no damage has occurred during installation.

5.With the furnace control center access panel removed, connect a “U” tube manometer to the manifold pressure test port as shown in Figure 2. This will be used for checking the manifold gas pressure.

6.Set the thermostat or discharge temperature controls to lowest setting.

Sequence of Operation

Power-up/Standby

After power is supplied to the unit:

1.The ignition control will reset and perform a self- check routine.

2.The diagnostic LED will flash for up to four seconds.

3.The ignition control will begin scanning the thermostats.

Heat Mode

When the thermostat or discharge temperature controls call for heat:

1.The ignition control will check that the pressure switch for the combustion blower is open.

2.The combustion blower will be energized and the 15-second pre-purge begins.

3.The gas valve is energized and the igniter will spark for up to 10 seconds.

Natural Gas - If a flame is not sensed during the trial for ignition, two additional trials will be attempted before going into lockout for one hour.

LP Gas - If a flame is not sensed during the trial for ignition, the control will go into lockout for one hour.

4.When a flame is sensed, sparking stops immediately. The gas valve and combustion blower remain energized.

7.Open all manual gas valves including the combination gas valve and turn power on.

8.Call for heat with the thermostat or discharge temperature controls and allow the burner to light. Greenheck duct furnaces are equipped with an automatic spark ignition system which automatically lights the burner. DO NOT attempt to light the burners manually.

9.After the burner is lit, check to make sure that the supply blower is operating.

10.Verify that the gas controls sequence properly (see Sequence of Operation below).

11.Check the manifold gas pressure (see Burner Adjustments on pages 5 and 6).

5a. Two-stage control: The burner will light at 100% fire and remain there for 10 seconds. The thermostat will then operate the burners at high or low fire, depending on the demand for heat.

5b. Electronic Modulation - The burner will light at

100% fire and remain there for 10 seconds. The main burner gas valve will then modulate from 100% down to 50% as needed. If the burner remains on low fire for an extended period of time, the burner will shut off and re-light as necessary.

6.The ignition control constantly monitors the thermostat, pressure switch, and burner flame to assure proper operation.

7.When the thermostat or discharge temperature controls are satisfied, the main valve is de- energized and the combustion blower shuts off following a 30-second post-purge period.

Recovery from Lockout

The ignition control will automatically reset after 1 hour if the thermostat is still calling for heat. Prior to 1 hour, a manual reset (cycle power to unit) is required. The thermostat may be reset or the power interrupted for a period of 5 seconds. See page 7 for Ignition Control Diagnostics.

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Greenheck Fan PVF manual Start-Up Procedure, Sequence of Operation, Recovery from Lockout
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PVF specifications

Greenheck Fan PVF (Packaged Ventilation Fan) represents a significant advancement in commercial and industrial ventilation technology. These fans are designed to provide efficient air movement for a variety of applications, ensuring improved indoor air quality and optimal operational performance. One of the main features of the PVF is its packaged design, which simplifies installation and minimizes the footprint of the equipment. This compact solution integrates multiple components into one unit, reducing the need for extensive ductwork and external accessories.

The Greenheck Fan PVF incorporates several cutting-edge technologies that enhance its performance and energy efficiency. Its EC (Electronically Commutated) motors are a prime example, delivering advanced energy savings compared to traditional motor types. These motors also provide variable speed control, allowing users to adjust the airflow according to specific needs, further optimizing energy usage.

Another key characteristic of the PVF is its durable construction. The unit is built with high-quality materials resistant to corrosion and wear, ensuring longevity and reliable operation in demanding environments. Additionally, the fans are designed with insulated housing to minimize noise levels during operation, making them suitable for use in noise-sensitive areas.

The PVF also features an easily accessible maintenance design, which promotes user-friendly serviceability. The arrangement of components allows for quick inspections or repairs without the need for extensive disassembly. This design consideration refreshes the operational uptime of the unit, ensuring that ventilation requirements are consistently met.

Moreover, Greenheck's commitment to sustainability is reflected in the PVF's design. The fan is engineered to meet or exceed industry standards for energy efficiency, making it an eco-friendly choice for businesses looking to reduce their carbon footprint. Its versatility allows the PVF to be used in various applications, including restaurants, schools, and commercial buildings, adapting seamlessly to diverse airflow needs.

In conclusion, the Greenheck Fan PVF is a state-of-the-art packaged ventilation fan that combines performance, efficiency, and durability. Its innovative technologies, compact design, and user-friendly features make it an ideal choice for a wide range of commercial and industrial ventilation applications, reinforcing Greenheck's reputation as a leader in the ventilation industry.
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