Weil-McLain ECO 70 Manual page 78

TM -
G
AS FIRED WATER BOILER
Startup — final checks
Final checks before starting boiler
❏
Read the instructions to adjust and set up the ECO control.
❏
Verify that the boiler model is set correctly in the ECO con-
trol, 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 and securely at-
tached.
❏
Inspect vent piping and air piping for signs of deteriora-
tion 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 blower via the service switch.
2. Follow the Operating Instructions, Figure 85, page 79.
3. The ECO control display will show installed sensors when
first powered. Make sure the right 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 thermostats set below room temperature?
4. Is gas turned on at meter and boiler?
5. Is incoming gas pressure less than the minimum values given
on page 17?
6. Are ECO control settings correct for the application?
7. Is the warm weather shutdown activated?
8. If none of the above corrects the problem, refer to Trouble-
shooting, beginning on page 90.
❏
Check system and boiler
❏
1. Check system piping for leaks. If found, shut down boiler and
repair immediately. (See WARNING on page 75 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.
78
— Boiler Manual
(continued)
❏
1. Check around the boiler and inside the boiler jacket for gas
odor following the procedure of page 55 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 re-
sult in severe personal injury, death or substantial
property damage.
❏
1. Verify boiler has been converted for propane. See page 13 for
ECO 70 or 110 or page 15 for ECO 155.
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.
ECO boilers are shipped ready to fire 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 ECO control installer menus by pressing and
holding the UP and DOWN arrow keys for seven seconds.
3. See page 69 and Figure 77, page 70. Make sure the Max firing
rate is set to the maximum given in the table. If not, adjust
as necessary. Then navigate to DIAGNOSTICS — Manual
test mode (see Figure 80, page 72) 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.
temperature sensor from the flue pipe and insert a combus-
tion test probe.
6. Test for CO
2
with Figure 88, page 81. If results are acceptable, proceed to
step 7.
Adjustment" on page 80 or page 81 to set the throttle screw
position. See
CONTINUED AFTER NEXT PAGE
DO NOT attempt to mea-
sure gas valve outlet pres-
sure
— Remove the flue
(or O ) and for CO. The CO values must comply
2 2
, follow the instructions under "Throttle Screw
on page 80 upper left.
Part number 550-142-122/0513