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Acceptable combustion values — measured
values must be within the ranges given below
Part number 550-100-260/0520
103
ECO
®
Tec
GAS-FIRED WATER BOILER – 80/110/150/199 BOILER MANUAL
Startup — final checks (continued)
a. If the CO
2
is HIGH, turn the throttle screw (2.5mm Allen Head)
CLOCKWISE to lower the input. Allow the boiler to stabilize and
take another reading. Continue until the desired CO
2
value is
achieved.
b. If the CO
2
is LOW, turn the throttle screw (2.5mm Allen Head)
COUNTERCLOCKWISE to increase the input. Allow the boiler to
stabilize and take another reading. Continue until the desired CO
2
value is achieved.
c. Confirm that the CO is within limits.
Low Fire
1. Adjust the boiler to (LOW) (minimum output) and allow the
boiler to stabilize. Confirm the rpm value during operation with
the Figures 98 or 99, Pages 110 or 111.
2. Remove the 4mm Allen Head cap, see Figure 93, page 102, for
Offset screw adjustment.
a. If the CO
2
is HIGH, turn the offset regulating screw 4mm Allen
Head COUNTERCLOCKWISE to lower the input. Allow the
boiler to stabilize and take another reading. Continue until
the desired CO
2
value is achieved.
b. If the CO
2
is LOW, turn the regulating screw CLOCKWISE
to increase the input. Allow the boiler to stabilize and take
another reading. Continue until the desired CO
2
value is
achieved.
c. Confirm that the CO is within limits.
d. Reinstall the 4mm Allen Head cap when adjustment is complete.
%
CO
2
CO
ppm
%
CO
2
CO
ppm
80
NG 9.25 ± 0.5 < 100 8.75 ± 0.5 < 50
LP 10.50 ± 0.5 < 150 10.15 ± 0.5 < 50
110
NG 9.25 ± 0.5 < 100 8.75 ± 0.5 < 50
LP 10.50 ± 0.5 < 150 10.15 ± 0.5 < 50
150
NG 9.25 ± 0.5 < 100 8.80 ± 0.5 < 50
LP 10.50 ± 0.5 < 150 9.90 ± 0.5 < 50
199
NG 9.25 ± 0.5 < 100 9.00 ± 0.5 < 50
LP 10.50 ± 0.5 < 150 10.40 ± 0.5 < 50
.
Values will increase about 0.2% once the door is reinstalled.
the boiler door after completing service.
CO
2
may be slightly lower and CO slightly higher.
2
must be lower than the high fire CO
2
values.
Re-check the Maximum and Minimum
CO
2
and CO rate
1. Turn off the boiler and then turn it back on and put in
Test Mode at maximum. Ensuring the CO
2
setting level has
remained unchanged and confirm that CO is within limits.
2. Reduce to minimum and re-check the minimum rate output
ensuring the CO
2
setting level has remained unchanged and
confirm that CO is within limits.
3. In the event that the CO
2
and CO cannot be obtained, please
contact your Weil-McLain representative.
4. Should you require any assistance during the set up
procedure contact your Weil-McLain representative if the
problem cannot be addressed with the information provided
in this manual.
❏
1. After the boiler has been installed, turn off the boiler.
2. Shut off the manual gas valve located on the gas line to stop
flow of fuel to the boiler.
3. Turn on the boiler. It will start the ignition sequence, but
will not light. After some time, the boiler will lockout, the
display screen will have a red banner across the screen and
will display “Ignition Fault 1”. It means that the boiler tried
to ignite without success for five (5) times and went into
Lockout mode. This means that the ignition system safety
device worked properly.
4. Clear the Lockout condition by selecting “Manual Reset” on
the Homeowner screen menu.
5. Open the manual gas valve located on the gas line to resume
fuel supply to the boiler.
❏
1. Operate the boiler on HIGH fire.
2. Using an inspection mirror, move the mirror around all
heat exchanger joints and vent pipe connections at the top
of the boiler and at the connection to the condensate dish.
Also inspect the joint between the condensate dish to heat
exchanger.
3. A leak would appear as vapor on the surface of a mirror.
Also look for signs of weepage or other indications that
there might be leakage.
4. 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
procedures given in the Maintenance section of this
manual.
c. When disassembling components, inspect gaskets to see
if there is damage. Replace any damaged gasket.
d. Contact your Weil-McLain representative if the problem
cannot be addressed with the information provided in
this manual.
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