Install Instructions
DOE
Part number 550-100-131/0715
– 127 –
™
GAS-FIRED WATER BOILER — Boiler Manual
Ratings
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)
$IRECT6ENT6ENTING/.,9
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
%6'
220,000 206 95.0 179 7.2% 2.1% 7.2% 2.1% 4.6 3 or 4" PVC
%6'
299,000 280 95.0 243 N/A 2.7% N/A 2.7% 7.0 4" PVC
Notes
As an Energy Star Partner, Weil-McLain
has determined that Evergreen 220 and
299 boilers meet the Energy Star guide-
lines for energy efficiency.
NOTE: Adjusting boiler firing rate will
affect AFUE rating.
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.
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.
Evergreen
TM
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.
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.
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.
4(%OUTDOOR SENSOR3500,)%$7)4(4(%"/),%2-534"%).34!,,%$5.,%33%8%-04%$"%,/7
IMPORTANT
In accordance with 3ECTION OF THE
%NERGY!CT, 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.
4()3/6%22)$%-534./4"%53%$5.,%33!4,%!34/.%/&4(%&/,,/7).'
#/.$)4)/.3)3425%
s An external energy management system is installed that reduces the boiler water temperature as the
heating load decreases.
s This boiler is not used for any space heating.
s This boiler is part of a modular or multiple boiler system having a total input of 300,000 BTU/hr or
greater.
s This boiler is equipped with a tankless coil (not applicable to Evergreen).
&IGURE Ratings and engineering data — Evergreen
TM
220/299/300/399
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)
$IRECT6ENT6ENTING/.,9
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
%6'
300,000 286 248 96.0 95.5 2.7% 2.7% 7.0 4” PVC
%6'
399,000 383 333 96.5 96.0 4.3% 4.3% 6.7 4” PVC