Manuals / PVI Industries / Household Appliance / Water Heater

PVI Industries PV500-45C manual Loss of Flame Signal, LED Indication Fault Mode

Models: PV500-45C

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4.Proof of Air Pressure Switch - The control will look for a signal from the airflow-proving switch, indicating that the blower is operating:

a.When the airflow generated by the blower is sufficient to cause the differential air switch to close, the 15 - second pre-purge delay will start.

b.During this period any flue products or combustible gases which may have settled in the water heater are evacuated.

5.Heat-Up- Following the pre-purge delay, the hot surface igniter will be energized:

a.The flame control will monitor the current applied to the hot surface igniter.

b.If the flame control determines the proving current meets the threshold, a dwell time delay starts to assure the hot surface igniter has sufficient time to reach ignition temperature.

6.Ignition - When dwell time is completed a 4-second Trial for Ignition (TFI) period is initiated:

a.The Delay-On (Low Fire Hold) Relay and the Gas Safety Valves are energized.

b.During TFI the flame safeguard control will monitor the flame using flame rectification through the hot surface igniter.

c.If the flame control senses the presence of flame before the end of the TFI period, the igniter will be de- energized and the flame control will continue to monitor the flame, through the igniter, until the operating thermostat ends the call for heat condition.

7.Loss of Flame Signal

a.If the igniter fails to sense flame at any time, the igniter and gas valve will be de-energized and the flame control will reset and begin the call-for-heat sequence again. This will occur 3 times (one time if CSD-1) before the flame control will lockout.

b.When the call for heat condition ends or flame failure occurs following the third TFI period (one time if CSD- 1), a 30-second post-purge period will begin. This period of blower operation will exhaust any remaining combustion products from the system.

8.Delay-On Relay - Once the Delay-On (Low Fire Hold) Relay has timed out, it energizes the Modulation Release Relay (SPDT) to enable the analog signal from the TempTrac to the VFD to regulate the speed of the blower.

a.The TempTrac will continue to monitor the stored water temperature in the tank.

b.When the setpoint temperature is reached the call-for-heat signal to the flame safeguard control is discontinued.

c.The flame safeguard control deenergizes the VFD blower system and the gas valve, thereby suspending burner operation.

d.As heat is transferred to the building, the water heater loop temperature will fall below the set point. The TempTrac will sense this condition and begin the call-for-heat sequence again.

9.Flame Safeguard LED Diagnostic Indicator - If the Fenwal Flame Safeguard Control at any time during the operating sequence senses an improper operating state and locks out, the diagnostic red LED located on the control board will flash to indicate one of the following conditions exist:

LED INDICATION

FAULT MODE

On

Normal Operation

OFF

Internal Control Failure – check power

1

Flash

Airflow Fault

 

 

 

2

Flashes

Erroneous Flame Signal

3

Flashes

Ignition Lockout

4

Flashes

Hot Surface Igniter Fault

 

 

 

5

Flashes

Low Voltage (24 VAC)

6

Flashes

Valve Relay Problem

 

 

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PV500-45C 06/12

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Page 27
Image 27
PVI Industries PV500-45C manual Loss of Flame Signal, LED Indication Fault Mode
Page 26 Page 28

PV500-45C specifications

PVI Industries has positioned itself as a leader in power generation solutions, and among its remarkable offerings is the PV500-45C, a sophisticated generator that caters to a wide array of industrial applications. The PV500-45C is notable for its robust design and cutting-edge technology, aligning perfectly with the demands of both commercial and residential projects.

One of the standout features of the PV500-45C is its high-performance engine, which ensures reliable power delivery even in the most challenging environments. The unit is equipped with a powerful 500 kW engine that operates efficiently, offering significant output while minimizing fuel consumption. This engine is built for longevity and durability, providing users with peace of mind and lower maintenance costs over time.

The PV500-45C employs advanced sound attenuation technology, making it one of the quietest generators in its class. This feature is particularly beneficial for applications in noise-sensitive areas, such as hospitals, schools, and residential neighborhoods. The generator is designed to meet strict emissions regulations, making it an environmentally friendly choice that adheres to local and international standards.

Another hallmark of the PV500-45C is its intelligent control system. The generator is outfitted with a state-of-the-art digital control panel that allows for seamless integration with existing power systems. This panel features real-time monitoring and diagnostics capabilities that help operators keep track of performance metrics and address potential issues before they escalate.

In terms of connectivity, the PV500-45C offers versatile options, including remote monitoring features that let users manage the generator from anywhere. This is particularly advantageous for businesses that require constant power availability, as it enables quicker responses to any technical difficulties.

The PV500-45C's design also prioritizes ease of maintenance. Key components are easily accessible, reducing downtime for repairs or servicing. The generator’s robust construction ensures it can withstand harsh environments, making it suitable for various applications including construction sites, agricultural tasks, and emergency power supply.

Overall, the PVI Industries PV500-45C is an exemplary model of modern generator technology, offering a blend of power, efficiency, and user-friendly features that cater to a diverse range of needs. Its performance and reliability make it an ideal choice for those seeking a high-quality power generation solution.