Fulton VMP Hot Water (VMPW) - Manual (Page 28)

© The Fulton Companies 2012
OPERATION
VMPW-IOM-2012-1001
SECTION 3
3-6
High Limit Aquastat/High Temperature Limit
The High Limit Aquastat/High Temperature Limit prevents over-temperature
conditions. This is an ASME CSD-1 code control which includes a manual
reset feature for over-temperature. Press the manual reset button when the
temperature drops to reset the control.
Air Safety Switch
This switch is controlled by the pressure of air entering the burner. This
switch proves that the blower fan is delivering combustion air.
Probe Type Low Water Cut-Off
The Low Water Cut-Off shuts down the unit when the water level is too low, after
a three-second time delay to prevent nuisance shut downs. Fulton boilers are
equipped with ASME CSD-1 Code controls which include a manual reset feature
on the burner low water cut off relay. Press the low water reset button to reset
the control, and the boiler will start.
Optional Circulating Pump Switch
The fused switch that controls the circulating pump should be kept in the ON
position at all times during boiler operation and non-operating mode of the
boiler. It should be placed in the OFF position when repairs or adjustments must
be made.
Cycle Testing
The boiler should be cycled tested and automatically allowed to go through
its normal starting sequence several times to verify that all components are
functioning properly. This will also verify that combustion is set properly so that
boiler light off has a smooth transition from ignition to main fl ame.
A minimum of 10 cycles should be met without any fl ame failures, with
combustion readings comparable to the factory test fi re sheet and no interlocks
causing the boiler to shutdown.
Before Leaving the Installation
1. Check all controls to insure they are operating properly. Cycle the boiler
several times by raising and lowering operating temperature on the
thermostat.
2. Make sure the installation complies with all applicable codes.
3. Turn switch to OFF position.
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WARNING
This boiler is equipped with an ignition
device which automatically lights the
burner. Do not try to light burner by hand.
Operating this equipment beyond its
design limits can damage the equipment
and can be dangerous. Do not operate the
equipment outside of its limits. Do not try
to upgrade the equipment performance
through unapproved modifi cations.
Unapproved modifi cations may cause
injury, equipment damage, and will void
the warranty.
Check daily that the equipment area
is free and clear of any combustible
materials, including fl ammable vapors
and liquids.
Do not tamper with safety features
provided by the operating controls.
Should overheating occur or the gas
supply fails to shut off , manually shut off
the gas supply external to the equipment .
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CAUTION
Operation of the circulating pump for any
amount of time without fi rst bleeding will
result in equipment damage.
For all systems containing boilers or unfi red
steam generators, the water chemistry in
the boiler (generator) must be kept within
required limits. Failure to do so may cause
premature pressure vessel failure and poor
steam quality and will void the warranty.
If any “Manual Reset” limit device trips
DO NOT reset without determining and
correcting the cause. (Manual Reset Limits
may include: fl ame safeguard, high or low
gas pressure, high temperature limit, low
water).
Never tamper with low water (liquid level)
cutoff sensors or circuitry.