Weil-McLain Series 2 Manual page 93

® S
ERIES
Annual startup
Check blower speeds
1. For installations at altitudes above 5,500 feet, make
sure the control is set up for high altitude in the
boiler setup menu. The ECO control automatically
adjusts low fire and ignition rates to compensate for
high altitude conditions.
2. For installations below 5,500 feet, high altitude
should NOT be enabled.
3. Use the ECO control display to navigate to
D I AG N O S T I C S / Ma n u a l te s t m o d e ( s e e
Figure 78, page 70 for navigation instructions and
Figure 87, page 76 for the complete Diagnostics
menus).
4. Set the firing rate to LOW (low fire).
5. Write down the blower RPM value shown and
compare to the value in Figure 100. The value
should be no less than the "Minimum setting" and
no higher than the Ignition "Factory setting" listed.
Low fire rate (and corresponding blower speed) is
adjusted in the boiler setup menu.
6. Set the firing rate to MED (ignition rate).
7. Write down the blower RPM value. It should be
within 200 RPM of the value listed in Figure 100.
8. Set the firing rate to HIGH (high fire).
9. Write down the blower RPM value. It should be
within 200 RPM of the value given in Figure 100.
10. 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 ECO
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.
3. If the flue temperature is higher than this, shut
down the boiler, allow to cool, and follow the
procedure starting on page 105 to clean the heat
exchanger.
Part number 550-142-190/1218
2
-
G
AS FIRED WATER BOILER
(continued)
Figure 100
Minimum
Factory
Maximum
— Boiler Manual
Firing rates and corresponding blower speeds (low fire,
ignition, and high fire) — for altitudes up to 5,500 feet
and high altitude (above 5,500 feet)
ECO 70
Model
% RPM Btu/Hr
Note 1
20 1,100 14,000
setting
20 1,100 14,000
setting
High
33 1,675 23,000
altitude
("Medium" setting in manual test mode)
Factory
47 3,200 32,900
setting
High
62 3,500 43,400
altitude
(adjust if desired to match maximum system load —
High fire % rate = Max heat load / Boiler output)
(adjusting speed will affect boiler AFUE rating)
Factory
96 4,150 67,200
setting
100 4,300 70,000 100 7,850 110,000
setting
Note 1 — The boiler will automatically derate the BTU values listed in
this table 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 10,000 feet, please contact Weil-McLain
Technical Support for details.
110
% RPM Btu/Hr % RPM Btu/Hr
Note 1
Low fire
20 1,900 22,000 18 1,300
20 1,900 22,000 18 1,300
33 2,890 37,000 33 2,100
Ignition
50 4,130 55,000 47 2,800
61 4,975 67,500 61 3,500
High fire
96 7,550 105,600 96 5,300 148,800
100 5,500 155,000
155
Note 1
28,000
28,000
52,000
72,850
94,550
93