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Ratings — ECO boilers
&IGURE Ratings and engineering data — ECO 70/110/155
DOE
Boiler
Model
ECO
CSA
Output /
DOE
Heating
capacity
CSA
Input
Net AHRI
water
rating
DOE
Seasonal
Efficiency
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)
$IRECT6ENT6ENTING/.,9
Shipping
Weight
Operating
Weight
Btuh
(Note 2)
Btuh
(Note 5)
Btuh
(Note 3)
AFUE, %
(Note 1)
Gallons
Inches
(Note 4)
Natural gas Propane
Pounds Pounds
2”
Vent/air
piping
3”
Vent/air
piping
2”
Vent/air
piping
3”
Vent/air
piping
70
65,000 70,000 57 95.2 2.54 3" PVC 12 % 5 % 12 % 5 % 117 110
110
101,000 110,000 88 95.0 2.54 3" PVC 15 % 5 % 15 % 5 % 117 110
155
143,000 155,000 124 95.1 3.22 3” PVC N/A 5 % N/A 5 % 130 125
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 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 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 70 or 110 vent/air pipes can be
either 2” or 3”
ECO 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 applica-
tions only. For altitudes from sea level
to 5,500 feet above sea level, the ECO
boiler requires no modifications and
automatically derates itself by approxi-
mately 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 SENSOR3500,)%$7)4(4(%"/),%2-534"%).34!,,%$5.,%33%8%-04%$"%,/7
IMPORTANT
In accordance with 3ECTIONOFTHE
%NERGY!CT
, this boiler is equipped
with a feature that saves energy by re-
ducing 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.
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 tem-
perature 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 ECO).
Part number 550-142-122/0513
119
TM
GAS-FIRED WATER BOILER — Boiler Manual
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