Ratings - Eco Series 2 Boilers - Weil-McLain Series 2 Manual

® S
ERIES
Ratings — ECO Series 2 boilers
Figure 132
Ratings and engineering data — ECO 70/110/155 Series 2 boilers
Boiler
CSA
Model
Input Capacity
ECO
Btuh
(Note 5)
70 70,000
110 110,000
155 155,000
As an Energy Star Partner, Weil-McLain
1
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
THE OUTDOOR SENSOR SUPPLIED WITH THE BOILER MUST BE INSTALLED UNLESS EXEMPTED BELOW:
In accordance with
Section 303 of the
, this boiler is equipped
2007 Energy Act
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.
Part number 550-142-190/1218
2
-
G
AS FIRED WATER BOILER
$+5, &HUWL¿HG 5DWLQJV
Heating Seasonal rating
(I¿FLHQF\ ZDWHU
Btuh AFUE %
(Note 2) (Note 1) (Note 3)
65,000 95.2
101,000 95.0
143,000 95.1
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".
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).
— Boiler Manual
Vent/
Net Boiler Comb. Air
Water Connection
Content Diameter
Btuh Inches
Gallons
(Note 4)
57 2.54 3" PVC
88 2.54 3" PVC
124 3.22 3" PVC
Notes
IMPORTANT
% Input derate vs vent length
(Values shown are at MAX vent/air pipe
length —
See Note 6)
Direct Vent Venting ONLY
Natural gas
2" 3"
Vent/air Vent/air Vent/air
piping piping piping
12 % 5 % 12 %
N/A 5 % N/A
N/A 5 % N/A
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.
Propane
2" 3"
Vent/air
piping
5 %
5 %
5 %
127