Freestyle 2 Series - Ratings

Figure 178 Ratings and engineering data — FreeStyle
®
Series 2 80/120/155
Part number 550-142-950/0122
135
FreeStyle
®
series 2 wall mount gas-fired water boiler – boiler manual
41 Ratings
Notes
1 As an Energy Star Partner, William-
son-ermoo has determined that
FreeStyle® boilers meet the Energy Star
guidelines for energy eciency.
NOTE: Adjusting boiler ring rate will
aect AFUE rating.
2 Based on standard test procedures
prescribed by the United States Depart-
ment of Energy.
NOTE that only Heating Capacity and
AFUE are certied by AHRI. AFUE is
also know as Annual Fuel Utilization
Eciency or Seasonal Eciency.
3 Net ratings are based on net installed
radiation of sucient quantity for the
requirements of the building and noth-
ing 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 Boilers are designed to be direct-vented.
FreeStyle® boilers require special vent-
ing. Use only the vent materials and
methods specied in this manual.
Boilers may be direct exhaust vented.
Vent/air pipes can be either 2” or 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 4,500 feet above sea level, please refer
to page70.
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.
7 CSA - Low Lead Content only applies
to the Combi boiler models.
THE OUTDOOR SENSOR (SUPPLIED WITH HEATING Only BOILERS) THE BOILER
MUST BE INSTALLED UNLESS EXEMPTED BELOW:
(Is optional for Combi Boilers)
IMPORTANT
In accordance with Section 303 of the
2007 Energy Act
, this boiler is equipped
with a feature that saves energy by re-
ducing the boiler water temperature as
the heating load decreases. is 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 tem-
perature as the heating load decreases.
• is boiler is not used for any space heating.
• is boiler is part of a modular or multiple boiler system having a total input of 300,000
BTU/hr or greater.
• is boiler is equipped with a tankless coil (not applicable to Combi).
AHRI Certied Ratings
Boiler
Model
Input
Heating
Capacity
Seasonal
Efciency
Net
Water
Rating
% Input derate vs vent length
(Values shown are at MAX vent/air pipe length —
See Note 6)
Direct Vent Category ONLY
Vent/
Comb. Air
Connection
Diameter
MBH
(Note 5)
MBH
(Note 2)
AFUE, %
(Note 1)
MBH
(Note 3)
Natural gas Propane
Inches
(Note 4)
2”
Vent/air
piping
3”
Vent/air
piping
2”
Vent/air
piping
3”
Vent/air
piping
FS-80
80.0 75 95.0 65 12 % 4.2 % 12 % 4.2 % 3" PVC/PP/SS
FS-120
120.0 112 95.0 97 11.4 % 3.5 % 11.4 % 3.5 % 3” PVC/PP/SS
FS-155
155.0 144 95.0 125 13.6 % 5.0 % 13.6 % 5.0 % 3” PVC/PP/SS
* Low Lead Content
(Note 7)