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Part number 550-100-260/0520
112
ECO
®
Tec
GAS-FIRED WATER BOILER – 80/110/150/199 BOILER MANUAL
Check blower speeds (continued)
8. Write down the blower RPM value. It should be within
50 RPM of the value given in Figure 98, page 110 for
Natural gas, Figure 99, page 111 for LP propane gas.
9. If any of the values are outside the ranges listed in the
previous steps, contact the factory for technical assistance.
Minimum and maximum blower speeds can be
adjusted within limits, but changing speeds will
affect AFUE ratings.
Check flue gas temperature
1. Set the boiler to high fire. Then adjust the control display
to view flue gas temperature and boiler return temperature.
2. The flue gas temperature should be no more than 50°F
higher than the boiler return temperature. If temperature
delta is higher, cleaning the Heat exchanger may be
required. See the maintenance section starting on
page 128.
3. If the flue temperature is higher than this, shut down the
boiler, allow to cool, and follow the procedure starting on
page 128 to clean the heat exchanger.
Manual Test Mode for Boilers
1. Navigate to Manual Test Mode screen under DIAGNOSTICS
menu.
2. Generate a call for heat and wait until the burner is lit, if not
yet in operation.
3. Press EDIT and select the desired FORCE RATE. Rate will
be forced to setting for 30 minutes. Manual Test Mode resets
at end of heating demand. If time out, boiler will revert to
AUTO but will keep running if demand exist.
3 Way Valve Test (Combi Model Only)
1. Navigate to Manual Test Mode screen under DIAGNOSTICS
menu.
2. Ensure boiler is in "Standby" with no calls for heat active.
3. Press edit and select the desired position of the 3 way valve.
This is a test feature to check if the 3 way valve is operational.
4. The 3 Way Valve Actuator may be removed by the procedure
shown in Figure 122, page 135. Once removed, use the display
to change the position of the actuator and visually check to see
is the motor shaft is moving. It is normal to see the shaft slide
back in forth when the actuator is in the recessed state, but
there should be no play in the shaft when it is in the extended
state. The recess position of the shaft is for the DHW mode.
The extended position of the shaft is for the space heating
mode. When the actuator is detached, use a blunt object to
push on the 3 way valve shaft still assembled in the Sanitary
Shutter. This shaft should require some force to compress
against the valve spring. If the shaft cannot be moved, or
stuck in the compressed state, follow the procedures listed
on page 135 Cleaning & maintenance for Flow Manifold.
Annual startup (continued)
Check Inlet gas pressure
Check inlet gas pressure to limits on page 19 and at the gas inlet
pressure test port shown in Figure 93, page 102.
Check Internal circulation pump
1. Check that the circulator light turns solid orange during boiler
operation and that water flow exists.
2. Check for water leaks or signs of any water damage.
High Altitude
Note 1 for Figure 98, page 110 for Natural
gas and Figure 99, page 111 for LP
propane gas ––
The boiler will automatically derate the BTU values listed
in by 4% per 1,000 feet above sea level.
In the USA Input rates are derated 4% for each 1000
ft. above sea level, beyond 2000 ft. in accordance
with National Fuel Gas Code, ANSI Z223.1/NFPA
54 – latest edition, and/or the Natural Gas and
Propane Installation Code, CAN/CSA B149.1.
For elevations above 11,000 feet, please contact
Weil-McLain Technical Support for details
In Canada, Input rates are derated 10% for altitudes
of 2000 ft. to 4500 ft. above sea level. Please use
appropriate Fan Speed Settings for High Altitude
provided in this manual.
In Canada for elevation beyond 4500 feet, please
consult Provincial Authorities having jurisdiction
and/or local codes.
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