DOE
Part number 550-100-131/0120
– 129 –
®
gas
-
fired
water
boiler
— 220/299/300/399
Boiler Manual
Ratings
Figure 123
Ratings and engineering data —
Evergreen
®
220/299/300/399
AHRI Certified Ratings
Boiler
Model
Input
Heating
Capacity
Seasonal
Efficiency
Net
Water
Rating
% Input derate vs vent length
(Values shown are at MAX vent/air pipe
length —
See Note 6)
Direct Vent Venting ONLY
Boiler
Water
Content
Vent/
Comb. Air
Connection
Diameter
Btuh
(Note 5)
MBH
(Note 2)
AFUE, %
(Note 1)
MBH
(Note 3)
Natural gas
Propane
Gallons
Inches
(Note 4)
3”
Vent/air
piping
4”
Vent/air
piping
3”
Vent/air
piping
4”
Vent/air
piping
EVG 220
220,000
206
95.0
179
7.2%
2.1%
7.2%
2.1%
4.6
3 or 4" PVC
EVG 299
299,000
280
95.0
243
N/A
2.7%
N/A
2.7%
7.0
4" PVC
Notes
1
As an Energy Star Partner, Weil-McLain
has determined that
Evergreen
® 220
and 299 boilers meet the Energy Star
guidelines for energy efficiency.
NOTE: Adjusting boiler firing rate will
affect AFUE rating.
2
Based on standard test procedures
prescribed by the United States Depart-
ment of Energy. Ratings also referred to
as CSA Output.
NOTE that only DOE Heating Capacity
and AFUE are certified by AHRI. AFUE
is also know as Annual Fuel Utilization
Efficiency or Seasonal Efficiency.
3
Net AHRI ratings are based on net
installed radiation of sufficient quantity
for requirements of the building and
nothing need be added for normal
piping and pickup. Ratings are based
on a piping and pickup allowance of
1.15. An additional allowance should
be made for unusual piping and pickup
loads.
4
Evergreen
®
boilers must be direct-vented.
Evergreen
®
boilers require special vent-
ing, consistent with Category IV boiler.
Use only the vent materials and meth-
ods specified in this manual.
Evergreen
®
220 vent/air pipes can be
either 3” or 4”.
Evergreen
®
299/300/399
vent/air pipes must be 4”.
All vent and air pipe elbows must
be sweep elbows, NOT short-radius
elbows.
5
Ratings shown are for sea level ap-
plications only. For altitudes from sea
level to 2000 feet above sea level, the
Evergreen
®
boiler requires no modifica-
tions. The boiler automatically derates
itself by approximately 4% per 1000 feet
above sea level.
6
All of the boilers will automatically
de-rate as vent/air pipe length increases,
due to the pressure loss through the
piping. For vent/air pipe lengths less
than the maximum, the derate equals
the value above times vent length ÷ 100.
THE
OUTDOOR SENSOR
SUPPLIED WITH THE BOILER MUST BE INSTALLED UNLESS EXEMPTED BELOW:
IMPORTANT
In accordance with
Section 303 of the
2007 Energy Act
, this boiler is equipped
with a feature that saves energy by reducing
the boiler water temperature as the heating
load decreases. This feature is equipped with
an override which is provided primarily to
permit the use of an external energy manage-
ment system that serves the same function.
THIS OVERRIDE MUST NOT BE USED UNLESS AT LEAST ONE OF THE FOLLOWING
CONDITIONS IS TRUE:
• An external energy management system is installed that reduces the boiler water temperature as the
heating load decreases.
• This boiler is not used for any space heating.
• This boiler is part of a modular or multiple boiler system having a total input of 300,000 BTU/hr or
greater.
• This boiler is equipped with a tankless coil (not applicable to
Evergreen
®
).
Boiler
Model
CSA
Input
Gross
Output
Net Rating
Combustion
Efficiency
Thermal
Efficiency
% Input derate vs vent length
(Values shown are at MAX vent/air
pipe length
—
See Note 6)
Direct Vent Venting ONLY
Boiler
Water
Content
Vent/
Comb. Air
Connection
Diameter
Natural gas
Propane
Btuh
(Note 5)
MBH
(Note 5)
MBH
(Note 3)
%
(Note 5)
%
(Note 5)
4”
Vent/air
piping
4”
Vent/air
piping
Gallons
Inches
(Note 4
EVG 300
300,000
286
248
96.0
95.5
2.7%
2.7%
7.0
4” PVC
EVG 399
399,000
383
333
96.5
96.0
4.3%
4.3%
6.7
4” PVC
