Freestyle 2 Series Manual page 83

FreeStyle
®
2
series
33 Startup — final checks
At Minimum Rate:
1. Adjust the boiler to minimum output and allow the boiler
to stabilize.
2. Now adjust the offset pressure setting (Figure 109 - screw B)
Torx (T-40 male driver) until the CO
TING LEVEL (see Figure 110), confirm that the CO/CO
ratio is within limits (clockwise to increase gas).
Figure 109 Offset adjustment screw
(ONLY for use by a qualified technician, using
calibrated combustion test instruments).
Offset adjustment
Adjust in steps of no more than 1/8 of a turn and
wait 1 minute after each adjustment to allow the
setting to stabilise. Turning the screw too far will
cause the adjustment to reverse behavior.
Figure 110 Minimum rate combustion values –
measured values must be within the ranges
given below
/LP
Natural Gas Acceptable Combustion Range
Minimum Rate after 10 minutes from cold
CO/(PPM)
Boiler Model
FS-80
20
FS-120
20
FS-155
7
Part number 550-142-950/0122
-
wall mount gas fired water boiler
is at the correct SET-
2
––
Offset Regulating screw
Test at MIN. Power 00%
Turn clockwise (open gas)
for "MAX gas flow"
Turn counter-clockwise
(close gas)
for "MIN gas flow"
Rough start point
For LP Start up ONLY
Adjust gas valve
LOW FIRE
screw on left with
Allen wrench
turn
Counter-Clock wise
⅛ - ¼ turn.
Final Combustion values
MUST BE checked with
Combustion Analyzer.
B
CO NG % CO LP %
2 2
8.0 – 9.0 9.0 – 9.8
8.0 – 9.0 9.0 – 9.8
8.0 – 9.0 9.0 – 9.8
–
(continued)
Re-check the Maximum and Minimum
Rate
3. Turn off the boiler and then turn it back on and put in Test
Mode at maximum for 1 minute, then reduce firing rate/
high fire for 1 minutes. Reduce to minimum and re-check
the minimum rate output ensuring the CO
2
remained unchanged and confirm that the CO/CO
within limits.
4. In the event that the CO
CO/CO ratio cannot be obtained please contact your
2
Williamson-Thermoflo representative.
5. Should you require any assistance during the set up pro-
cedure contact your Williamson-Thermoflo representative
if the problem cannot be addressed with the information
provided in this manual.
‰
Check Heat exchanger and vent seals
1. Operate the boiler on HIGH fire.
2. A leak would appear as vapor on the surface of the mirror.
3. If there is any indication of a leak at any joint, immediately
shut down the boiler.
a. If possible, tighten the retaining screws or nuts (without
over-tightening).
b. If this does not correct the problem, disassemble the
components where the leak appeared. Use the proce-
dures given in the Maintenance section, starting on
page 111.
c. When disassembling components, inspect gaskets to see
if there is damage. Replace any damaged gasket.
d. Contact your Williamson-Thermoflo representative if
the problem cannot be addressed with the information
provided in this manual.
‰
Check ignition system safety shutoff device
1. After the boiler has been installed, turn off the boiler.
2. Shut off the manual gas valve located on the gas line to cut
flow of fuel to the boiler.
3. Turn on the boiler. It will start to ignite and a "d3" code will
flash. After the "d3" code flash for some time the boiler will
go into a Lockout condition and a "A01" code will show in
the display. It means that the boiler tried to ignite without
success (code "d3") for three (3) times and when into
Lockout mode(code "A01"). This means that the ignition
system safety device worked properly.
4. Open the manual gas valve located on the gas line to resume
fuel supply to the boiler.
5. Hit the "Reset" button once to Clear the Lockout code
"A01".
boiler manual
setting level has
2
setting level with an acceptable
2
ratio is
2
83