Slant/Fin VSL-160C Part C - Manual (Page 12)

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14.1.6 - Check ignition and
fl ame sense electrodes
1. Remove the fan-burner assembly
unit (see section 14.3)
2. Remove any deposits accumulated
on the ignition/fl ame sense electrode
using sand paper.
3. Check electrodes positioning meet
Section 14.4
14.1.7 - Check wiring and
connections
Inspect all boiler wiring, making
sure wires are in good condition and
securely attached.
14.1.8 - Perform
performance verifi cation.
1. Start boiler and perform a
combustion test as per section 12.9.
2. Verify cold fi ll pressure is correct and
that operating pressure does not go
too high (could be a problem on the
expansion tank).
14.1.9 - Flame inspection
1. Inspect fl ame through observation
window.
2. If the fl ame is unsatisfactory at either
high fi re or low fi re, clean the burner
following section 14.3.
14.1.10 - Check fl ame
signal
1. Follow section 14.12.4 to check the
fl ame signal.
2. At high fi re and low fi re the fl ame
signal shown on the display should
be within values given in Section 15,
header “ionisation current”. A lower
fl ame signal may indicate a fouled or
damaged fl ame sense electrode. If
cleaning the fl ame sense electrode
does not improve, ground wiring
is in good condition, and ground
continuity is satisfactory, replace the
fl ame sense electrode.
14.1.11 - Check relief valve
Inspect the relief valve and lift the lever
to verify fl ow. Before operating any
relief valve, ensure that it is piped with
its discharge in a safe area to avoid
severe scald potential. Read Section
7.2.2 before proceeding further. Relief
vavle should be re-inspected at least
once every three years, by a licensed
3. Check for gas leaks: using soap
solution, check for gas leaks from
meter to boiler including all pipes and
fi ttings and boier connections. Use
liquid soap solution for all gas testing.
WARNING!!!
Do not
check for gas leaks with an
open fl ame. Use the bubble
test. Failure to use the bubble
test or check for gas leaks
with an open fl ame can cause
explosion, severe personal
injury, death, or substantial
property damage.
14.1.3 - Verify fl ue and air
lines in good condition
and sealed tight;
1. Check for obstruction, condensation,
corrosion and physical damage,
water stains, any signs of rust, other
corrosions or separation of the vent
and air intake piping.
2. Check outside terminations. Screens
and louvers should be free of any
debris and must be cleaned as
required.
14.1.4 - Check system
water pressure/system
piping/expansion tank;
1. Check water piping and accessories
for leaks. Slightest leaks should be
corrected.
2. Check the system to be full of water
and pressure to remain stable at
correct setting on gauge.
14.1.5 - Check control
settings
1. Thermostat Test (control knobs items
“7” and “11”, Figure 13-1): Set knobs
setting to low enough to end call for
heat. Gas valve should close and
burner should stop fi ring. Fan go into
a post purge, then shuts off.
2. Control Safety Shutdown test: with
the burner fi ring, close the manual
gas shut off valve (Figure 11-1) .
Gas valve should close and burner
should stop fi ring. The boiler will try
for ignition three times after this,
then should lock out with an “L 01”
error shown on the display. Open the
manual gas shut-off valve, and press
the “Reset” button to return to normal
operation.
WARNING!!!
Never
obstruct the fl ow of combustion
and ventilation air. Failure to
provide adequate combustion
air for this boiler can result
in excessive levels of carbon
monoxide which can result in
severe personal injury or death!
WARNING!!!
If
maintenance is performed on
the vent-air intake system it
must be properly reassembled
and sealed. Failure to properly
maintain the vent-air system
can result in excessive levels
of carbon monoxide which can
result in severe personal injury
or death!
WARNING!!!
Before
performing any maintenance
operations, shut the boiler
off, close the manual gas
shut-off valve (Figure 11-1)
and shut off electrical power
to the boiler. Follow the
Operating Instructions outlined
in the section “SAFETY
INSTRUCTIONS” (Beginning of
the manual).
14.1.1 - Address reported
problems
Inspect any problems reported by the
owner and correct before proceeding.
14.1.2 - Check all piping
for leaks
CAUTION!!!
Eliminate all system
or boiler leaks. Continual fresh
makeup water will reduce boiler
life. Minerals can build up in
sections, reducing heat transfer,
overheating heat exchanger,
and causing heat exchanger
failure. Leaking water may also
cause severe property damage.
1. Inspect all water and gas piping and
verify to be leak free.
2. Look for signs of leaking lines and
correct any problems found.
14 - MAINTENANCE