Ratings — ECO Series 2 boilers
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 management 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
ECO
).
Figure 132
Ratings and engineering data —
ECO 70/110/155 Series 2 boilers
Part number 550-142-190/1218
127
Notes
1
As an Energy Star Partner, Weil-McLain
has determined that
ECO
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
Department 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 the 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
ECO
boilers must be direct-vented.
ECO
boilers require special venting,
consistent with Category IV boiler.
Use only the vent materials and methods
specified in this manual.
ECO
boilers may be direct exhaust vented.
ECO
70 vent/air pipes can be either 2" or 3".
ECO
110/155 vent/air pipes must be 3".
All vent and air pipe elbows must be sweep
elbows, NOT short-radius elbows.
5
Ratings shown are for sea level applications
only. For altitudes from sea level to 5,500
feet above sea level, the
ECO
boiler requires
no modifications and 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 (% Input derate vs. vent length)
times vent length ÷ 100.
THE
OUTDOOR SENSOR
SUPPLIED WITH THE BOILER MUST BE INSTALLED UNLESS EXEMPTED BELOW:
IMPORTANT
*+/6:/
Boiler
Model
ECO
CSA
Input
Heating
Capacity
Seasonal
;%:<
Net
rating
Boiler
Water
Content
Vent/
Comb. Air
Connection
Diameter
% Input derate vs vent length
(Values shown are at
MAX
vent/air pipe
length —
See Note 6)
Direct Vent Venting ONLY
Btuh
(Note 5)
Btuh
(Note 2)
AFUE %
(Note 1)
Btuh
(Note 3)
Gallons
Inches
(Note 4)
Natural gas
Propane
2"
Vent/air
piping
3"
Vent/air
piping
2"
Vent/air
piping
3"
Vent/air
piping
70
70,000
65,000
95.2
57
2.54
3" PVC
12 %
5 %
12 %
5 %
110
110,000
101,000
95.0
88
2.54
3" PVC
N/A
5 %
N/A
5 %
155
155,000
143,000
95.1
124
3.22
3" PVC
N/A
5 %
N/A
5 %
®
S
ERIES
2
G
AS
-
FIRED
WATER
BOILER
—
Boiler Manual
