Weil-McLain Series 2 Manual page 82

® S
ERIES
Startup — final checks
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 and securely attached.
❏
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 blower via the service switch.
2. Follow the Operating Instructions, Figure 92, page 83.
3. The 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 21?
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
Troubleshooting, beginning on page 95.
❏
Check system and boiler
❏
Check water piping
1. Check system piping for leaks. If found, shut down boiler and
repair immediately. (See WARNING on page 79 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.
❏
Check vent piping and air piping
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 gas piping
1. Check around the boiler and inside the boiler jacket for gas
odor following the procedure of page 59 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.
82
2
-
G
AS FIRED WATER BOILER
— Boiler Manual
(continued)
❏
Propane boilers — verify conversion
1. Verify boiler has been converted for propane. See page 15
for ECO 70, page 17 for ECO 110 or page 19 for ECO 155.
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.
ECO boilers are shipped ready to fire natural gas ONLY.
Failure to comply could result in severe personal injury,
death or substantial property damage.
❏
Check flame & combustion with instruments
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 73 and Figure 84, page 74. 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 87, page 76) 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.
Insert combustion analyzer probe
flue temperature sensor from the flue pipe and insert a
combustion test probe.
6. Test for CO (or O ) and for CO. The CO
2 2
with Figure 96, page 86. If results are acceptable, proceed to
step 7. , follow the instructions under "Throttle Screw
IF NOT
Adjustment" on page 84 or page 86 to set the throttle screw
position. See WARNING
7. Measure natural gas input:
a. Operate boiler 10 minutes. Turn off other appliances.
b. At natural gas meter, measure time (in seconds) required
to use one cubic foot of gas.
c. Calculate gas input:
3600 x 1000
number of seconds from step b
d. Btuh calculated should approximate input rating on
boiler rating label.
8. Use the ECO control display to navigate to Manual test mode
(see Figure 87, page 76) and force the firing rate to LOW
(low fire).
CONTINUED AFTER NEXT PAGE
— Remove the
values must comply
2
on page 84 upper left.
= Btuh
Part number 550-142-190/1218