Vacuum Pump Assembly and Mounting. Brant Radiant Heaters HLV-170, HLV-80, HLV-50, HLV-90, HLV-140, HLV-60, HLV-100, HLV-175, HLV-75, HLV-180

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Vacuum Pump Assembly and Mounting. Brant Radiant Heaters HLV-170, HLV-80, HLV-50, HLV-90, HLV-140, HLV-60, HLV-100, HLV-175, HLV-75, HLV-180 | Manualzz

4.0

Operation

Lighting and Shutdown • Sequence of Operation

4.0

Operation

HLV Series

!

WARNING

This heater must be installed and serviced by trained gas installation and service personnel only.

Do not bypass any safety features or the heater’s built in safety mechanisms will be compromised.

Burner Lighting Instructions

1

Purge main gas supply line.

2

Rotate heater’s manual ball valve to the “ON” position.

3

Close electrical circuit (turn on thermostat).

4

If the burner fails to light, turn “OFF” gas and wait five minutes before repeating the above procedure.

Burner Shutdown Instructions

1

Open electrical circuit (turn off thermostat).

2

Rotate heater’s manual ball valve to the “OFF” position.

Sequence of Operation

Starting Circuit: Upon a call for heat, power is supplied to the relays at the burner box(es) and vacuum pump. The vacuum pump is energized creating negative air pressure. This allows the differential pressure switch in the burner box(es) to close which completes a low voltage circuit from the secondary side of the transformer to the ignition module. After the ignitor has been powered for seven seconds, the gas valve opens initiating the ignition trial. If flame is not sensed after 15 seconds, the heater will attempt to re-ignite for a total of three trials for ignition before entering lockout mode.

Single Stage Running Circuit: After ignition, the flame rod monitors burner flame. If sense of flame is lost, the control closes the gas valve within one second and a new trial sequence (identical to the starting sequence) is initiated.

The control can be reset by briefly interrupting the power source.

Two Stage Running Circuit (when applicable

): The second stage on the gas valve is powered directly from the second stage of the thermostat. In order for two stage to flow to a higher output, single stage must be energized as well. The thermostat determines which stage to maintain for the desired temperature.

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HLV Series

3.0

Operation • Thermostat • Diagnostics • Operation Indicator Lights

Thermostat

NOTE: Different thermostats operate according to their particular features. Refer to thermostat specifications for details.

HLV Series heaters require a 24V, two stage thermostat to operate. The burner control box is equipped with a round terminal strip that accepts three (3) 1/4” insulated female spade terminals. Do not supply

120V to the 24V connection.

Theoretical Example: The thermostat is set to 65° F. The thermostat’s preset differential for high fire mode is 3° F.

When the temperature drops below the setpoint of the thermostat (65° F), low fire will activate. If the temperature continues to drop below the setpoint by another 3° F (62° F), high fire will activate bringing the temperature back up to the thermostat’s setpoint.

Diagnostics

The controls will automatically lockout the heater system when an external or system fault occurs.

Lockout: If proof of flame is not established, a component failure occurs or blockages are evident, the heater will enter hard lockout. If lockout occurs, the control can be reset by briefly interrupting the power source. Refer to Chart 4.1 below for a description of the control module diagnostic indicator flash codes.

Chart 4.1 • Control Module Diagnostic Flash Codes

LED Flash Code

Steady ON

1 Flash

2 Flashes

Fault Status

Control Fault

Air Flow Fault

Flame - No call for heat

3 Flashes Ignition Lockout

NOTE: Flash code indicator light is located internally on the control module.

Figure 4.1

• Operational Indicator Lights

Light 1* (amber)

Indicates High

Fire Mode

Light 2 (amber)

Indicates Low

Fire Mode

Light 3 (amber)

Pressure Switch

Operational Indicator Lights

*

Models with V-1SAO add-on are not equipped with high fire light.

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