Pressure Relief Valve; Sight Glass Isolation Valves; Cycle Testing; Daily Start-Up - FULTON VSRT Series Installation, Operation And Maintenance Manual

OPERATION
3. Close both the main gas supply isolation valve and gas
pilot line isolation valve.
4. Turn the burner on. This will cause a flame failure and
verify that the pilot flame failure function is operating
correctly.
5. Turn the boiler off and open the gas pilot line isolation
valve. This will allow for the burner to cycle though the
pilot light off and test main flame failure. Turn the boiler
off after this test is complete.
–
NOTE: On smaller boilers, the pilot flame will be sufficient to
allow the boiler to cycle through the main flame test. If this
occurs, shut the pilot line isolation valve. This will cause the
boiler to fail on main flame.
6. Once the boiler is completely off and has completed
the post purge cycle, open the main gas supply valve
and normal boiler operation can be resumed.
ƒ Modulating Controls
All boilers are standard-equipped with modulating con-
trols.
The modulating pressure controller continuously regulates
the burner between the minimum firing rate and high fire.
When the unit is on low fire and the pressure continues to
climb past the setpoint, the boiler will shut down. It will
typically re-start when the process pressure drops below the
setpoint.
ƒ Pressure Relief Valve
Located on the boiler, this valve limits the maximum
operating pressure of the equipment.
ƒ Sight Glass Isolation Valves
The brass sight glass isolation valves are equipped with an
internal ball check. In the event that a sight glass should
break, the ball will set, preventing discharge of steam and
water. The brass valve stem must be opened fully to enable
this feature If the valve is in any other position, the ball will
not set.
PROOF OF CLOSURE - IF APPLICABLE TO YOUR
MODEL
1. Disconnect power to the boiler.
2. While the boiler is off, remove the common wire to the
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VSRT-IOM-2022-0728
proof of closure (POC) switch on the oil/gas valve.
3. Restore power to the boiler. The boiler should
immediately lock out on alarm due to the POC being
disconnected.
4. Disconnect power and reconnect the POC wire.
5. Restore power to the boiler and reset any flame
programmer faults.
6. Cycle the burner and observe for proper operation.

Cycle Testing

The boiler should be cycle-tested and automatically allowed
to go through its normal starting sequence several times to
verify that all components are functioning accurately.
This will also verify that combustion is set properly so that
boiler light-off has a smooth transition from ignition to main
flame.
It is recommended that a minimum of 10 cycles should be
met without any flame failures, with combustion readings
comparable to the factory test fire sheet and no interlocks
causing the boiler to shutdown.

Daily Start-Up

To initiate daily start-up:
1. Turn Switch to On or Local (depending on model). The
blower/fan will start up and ramp to high fire speed/
rpm. The blower/fan will purge for 30 seconds, then
ramp down to light off position (near low fire). When
stable, ignition sequence begins.
2. As spark is generated inside the combustion chamber,
the pilot gas valve opens. There should be an audible
click of the pilot solenoid valve.
3. Once pilot flame is established, the main gas valve
will open. There should be an audible click from the
main gas valve solenoid valve. There may be a slight
whooshing sound as the main burner flame lights.

Daily Shutdown

To initiate daily shutdown:
1. Turn switch to Off. If burner is currently on, the unit will
start ramping down to low fire before turning off.
SECTION 3
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