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gas
Annual startup
Check blower speeds
1. For installations at altitudes above 2,000 feet,
make sure the control is set up for correct altitude
in the boiler setup menu. The Control automati-
cally adjusts low fire and ignition rates to com-
pensate for high altitude conditions.
2. Use the Control display to navigate to DIAGNOS-
TICS/Manual test mode (see Figure 74, page 75 for
navigation instructions and Figure 80, page 80 for
the complete Diagnostics menus).
3. Set the firing rate to MINIMUM (low fire).
4. Write down the blower RPM value shown and
compare to the value in Figure 96. The value
should no less than the "Minimum setting" and no
higher than the Ignition "Factory setting" listed.
Low fire rate (% of Max Rate) is adjusted in the
"Priority" setup menu.
5. Set the firing rate to MEDIUM (ignition rate).
6. Write down the blower RPM value. It should be
within 200 RPM of the value listed in Figure 96.
7. Set the firing rate to MAXIMUM (high fire).
8. Write down the blower RPM value. It should be
within 200 RPM of the value given in Figure 96.
9. If any of the values are outside the ranges listed in
the previous steps, contact the factory for techni-
cal 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.
3. If the flue temperature is higher than this, shut
down the boiler, allow to cool, and follow the
procedure starting on page 111 to clean the heat
exchanger.
– 100 –
-
fired water boiler
(continued)
Figure 96
Model
Factory
setting
altitude
Factory
setting
altitude
Factory
setting
Maximum
— 220/299/300/399 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).
EVG 220
Fuel
%
RPM Btu/Hr
Type
Note 1
%
NG 10
1,115 22,000
%
LP 10
1,100 22,000
%
1,190
11
NG
to
to
22,000
%
19
1,587
High
%
11
1,165
LP
to
to
22,000
18
%
1,482
("Medium" setting in manual test mode)
NG 43
%
3,000 94,550
%
LP 43
2,850 94,550
will
NG 57% 3,830
vary
High
will
LP 57% 3,620
vary
(adjust if desired to match maximum system load —
High fire % rate = Max heat load / Boiler output)
(adjusting speed will affect boiler AFUE rating)
NG 96
%
6,030 211,200
LP 96
%
5,660 211,200
%
NG 100
6,260 220,000 100
setting
LP 100
%
5,875 220,000 100
Note 1 — The boiler will automatically derate the Btu values listed in this
table by 4% per 1,000 feet above sea level.
Low fire high altitude rpm's change starting at 2,500 feet. The rpm's will
increase from the low value to the high value (11,000 feet) in a linear
fashion.
Ignition high altitude rpm's change at 5,500 feet.
EVG 299/300
%
RPM Btu/Hr
%
Note 1
Low fire
%
%
10
1,175 29,900
10
%
%
10
1,145 29,900
10
%
1,235
%
11
11
to
to
29,900
to
%
%
18
1,601
18
%
%
11
1,192
11
to
to
29,900
to
16
%
1,469
18
%
Ignition
38% 2,800 113,600
39% 3,150 156,300
38% 2,640 113,600
39% 3,000 156,300
will
51% 3,540
52% 4,030
vary
will
50% 3,330
52% 3,840
vary
High fire
%
6,100 287,040
%
96
96
96
%
5,800 287,040
96
%
%
%
6,325 299,000 100
%
6,020 299,000 100
%
Part number 550-100-131/0120
EVG 399
RPM Btu/Hr
Note 1
1,210 39,900
1,150 39,900
1,297
to
39,900
1,695
1,247
to
39,900
1,645
will
vary
will
vary
6,930 383,040
6,600 383,040
7,200 399,000
6,850 399,000
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