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CONTINUED AFTER NEXT PAGE
Part number 550-100-260/0520
100
ECO
®
Tec
GAS-FIRED WATER BOILER – 80/110/150/199 BOILER MANUAL
Final checks before starting boiler
❏
Read the instructions to adjust and set up the control.
❏
Verify that the boiler model is set correctly in the control, and
that it displays correctly.
❏
Verify that the boiler and system are full of water and all
system components are correctly set for operation.
❏
Verify that condensate trap is filled with water.
❏
Verify electrical connections are correct, securely attached,
and sealed at cabinet openings.
❏
Inspect vent piping and air piping for signs of deterioration
from corrosion, physical damage or sagging. Verify air piping
and vent piping are intact and correctly installed per this
manual.
To start the boiler
1. Apply power to the boiler via the field installed service switch.
2. Follow the Operating Instructions, Figure 92, page 101.
3. If this is the first time powering the boiler, please refer to
the Control section of this manual starting on page 72. The
control will prompt installer to go through our Wizard menu
setup. Please complete the Wizard setup and ensure all
connected sensors are detected and the correct boiler model
is identified. If not, determine the cause and correct before
proceeding.
If boiler does not start correctly
1. Check for loose connections, blown fuse or service switch off.
2. Are external limit controls (if used) open? Is boiler water
temperature above 200°F?
3. Are the closure switch contacts open?
4. Are thermostats set below room temperature?
5. Is gas turned on at meter and boiler?
6. Is incoming gas pressure less than the minimum values given
on page 19?
7. Are control settings correct for the application?
8. Is the warm weather shutdown activated?
9. If none of the above corrects the problem, refer to
Troubleshooting, beginning on page 114.
Check system and boiler
❏
1. Check system piping and DHW piping (Combi models only)
for leaks. If found, shut down boiler and repair immediately.
(See WARNING on pages 97 and 98 regarding failure to
repair leaks.)
2. Vent any remaining air from system using manual vents. Air
in the system will interfere with circulation and cause heat
distribution problems and noise.
❏
1. Check for gas-tight seal at every connection and seam of air
piping and vent piping.
Venting system must be sealed gas-tight to prevent
flue gas spillage and carbon monoxide emissions
which will result in severe personal injury or death.
❏
Check around the boiler and inside the boiler jacket for gas odor
following the procedure of page 57 of this manual.
If you discover evidence of any gas leak, shut down
the boiler at once. Find the leak source with bubble
test and repair immediately. Do not start boiler again
until corrected. Failure to comply could result in
severe personal injury, death or substantial property
damage.
❏
Verify boiler has been converted for propane. See page 14 for
ECO
Tec 80, 110, 150 or 199.
DO NOT attempt to
measure gas valve outlet
pressure
DO NOT adjust or attempt to measure gas valve outlet
pressure. The gas valve is factory-set for the correct outlet
pressure. This setting is suitable for natural gas and propane,
requiring no field adjustment.
Attempting to alter or measure the gas valve outlet pressure
could result in damage to the valve, causing potential severe
personal injury, death or substantial property damage.
Boilers are shipped ready to operate on natural gas ONLY.
Failure to comply could result in severe personal injury,
death or substantial property damage.
❏
1. Initiate a call for heat on one of the thermostat inputs.
2. Access the control installer menus by pressing and holding
the WM logo on the top left for 5 seconds while in the middle
"Homeowner" screen.
3. Make sure the Max firing rate is set to the maximum given
in Figures 98 and 99, pages 110 and 111. If not, adjust as
necessary. Then navigate to DIAGNOSTICS — Manual test
mode (see Figure 89, page 95) and force the firing rate to
HIGH (high fire).
4. Look at the flame through the flame inspection window. The
high fire flame should be blue and should be stable. The burner
surface should be covered with orange dots.
5.
— Remove the test port
cap from the vent flue adapter and insert a combustion test
probe.
6. Test for CO
2
(or O
2
) and for CO. The CO
2
values must comply
with Figure 94, page 103. If results are acceptable, proceed to
step 7. , follow the instructions under the“Gas Valve
Adjustment" section on page 102 or page 103 to set the throttle
screw and offset regulating screw position. See
on page 102 upper left.
Startup — final checks (continued)
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