&IGURE
2ATINGSANDENGINEERINGDATA
FreeStyle
™
Notes
1
As an Energy Star Partner, Williamson-
Thermoflo has determined that
Free-
Style
™
boilers meet the Energy Star
GUIDELINESFORENERGYEFlCIENCY
NOTE: Adjusting boiler firing rate will
AFFECT!&5%RATING
2
Based on standard test procedures
prescribed by the United States Depart-
MENTOF%NERGY
NOTE that only Heating Capacity and
AFUE are certified by AHRI. AFUE is
also know as Annual Fuel Utilization
%FlCIENCYOR3EASONAL%FlCIENCY
3
Net ratings are based on net installed
RADIATIONOFSUFlCIENTQUANTITYFORTHE
REQUIREMENTSOFTHEBUILDINGANDNOTH
-
INGNEEDBEADDEDFORNORMALPIPING
and pickup. Ratings are based on a pip-
INGANDPICKUPALLOWANCEOF!N
additional allowance should be made
FORUNUSUALPIPINGANDPICKUPLOADS
4
FreeStyle
™
boilers must be direct-
vented.
FreeStyle
™
boilers require special
venting. Use only the vent materials
and methods specified in this manual.
FreeStyle
™
80 or 120 vent/air pipes can
be either 2” or 3”.
All vent and air pipe elbows must
be sweep elbows, NOT short-radius
elbows.
5
2ATINGSSHOWNAREFORSEALEVELAPPLICA
-
TIONSONLY&ORALTITUDESFROMSEALEVEL
TOFEETABOVESEALEVELTHE
FreeStyle
™
boiler requires no modifi-
CATIONSANDAUTOMATICALLYDERATESITSELF
BYAPPROXIMATELYPERFEET
above sea level.
6
!LLOFTHEBOILERSWILLAUTOMATICALLY
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.
4(%
OUTDOOR SENSOR
3500,)%$7)4((%!4).'/NLY"/),%23 4(%"/),%2
-534"%).34!,,%$5.,%33%8%-04%$"%,/7
)SOPTIONALFOR#OMBI"OILERS
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
THEHEATINGLOADDECREASES4HISFEATURE
is equipped with an override which is
PROVIDEDPRIMARILYTOPERMITTHEUSEOF
an external energy management system
THATSERVESTHESAMEFUNCTION
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
BOILERISNOTUSEDFORANYSPACEHEATING
s
This
BOILERISPARTOFAMODULARORMULTIPLEBOILERSYSTEMHAVINGATOTALINPUTOF
BTU/hr or greater.
s
This boiler is equipped with a tankless coil (not applicable to Combi).
(Note 7)
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)
$IRECT6ENT#ATEGORY/.,9
Vent/
Comb. Air
Connection
Diameter
"TUH
(Note 5)
"TUH
(Note 2)
!&5%
(Note 1)
"TUH
(Note 3)
.ATURALGAS
0ROPANE
)NCHES
(Note 4)
v
6ENTAIR
PIPING
v
6ENTAIR
PIPING
v
6ENTAIR
PIPING
v
6ENTAIR
PIPING
&3
12
12
06#
&3
06#
DOE
*
Low Lead Content
Part number 550-142-850/0115
119
FreeStyle
™
W
ALL
M
OUNT
GAS
-
FIRED
WATER
BOILER
—
Boiler Manual
37
Ratings
