Brochure

WM2011_BRO_019_SGO
7"diam. 7"diam.
20¼
35⅝
1⅛
3¾
26⅞
water line
15
clearance
for
tankless
heater
7¾
A2
A1
Packaged* Front
Intermediate
Semi-Packaged* Front Side Back
20¼
3¾
7⁄ 4⁄
10¼
15
clearance
for
tankless
heater
for 7
vent pipe
7¾
A2
E2
S2
U2
U3
A3
A
B
U1
B2
R1
H
L
A2
A3
26⅞
water line
4⅜
diam.
burner
opening
heater location
1⅛
30⁄
9½
15½
2⁄
2⁄
A1
B1
S1
E1
L
P
6¼
3¾
3⁄
14⅛
7⁄
14
approx.
7 diam.
29⁄
In the interest of continual improvement in product and
performance, Weil-McLain reserves the right to change
specifications without notice.
Model* SGO-3 SGO-4 SGO-5 SGO-6 SGO-7 SGO-8 SGO-9
AHRI Burner Capacity (GPH)
1
0.95 1.20 1.45 1.75 2.00 2.30 2.55
Input Rating (MBH)
3
133 168 203 245 280 322 357
DOE Heating Capacity (MBH)
1, 2
114 144 174 210 240 266 295
AFUE 85.0% 85.0% 85.0% 85.0% 85.0% —
4
—
4
Net AHRI Steam Ratings (MBH)
3
86 108 131 158 182 200 221
Steam (Sq. Ft.)
5
358 450 546 658 758 833 921
Tankless Heater Intermittent Draw Rating (GPM)
6
3.25 3.50 3.75 4.00 4.00 4.00 4.00
Draft Loss Through Boiler (in. w/c)
7
.020 .010 .015 .015 .015 .025 .030
Chimney
Size
Rectangular (in.) 8 x 8 8 x 8 8 x 8 8 x 8 8 x 8 8 x 12 8 x 12
Round (in.) 6 6 7 7 8 8 8
Height (Ft.) 15 15 15 15 15 20 20
Approx. Shipping Weight (Lbs.) 600 705 820 920 990 1090 1195
* Boiler order options include
Packaged boiler: Assembled block with jacket, collector hood and controls installed (order burner separately); sizes 3–6.
Semi-packaged boiler: Assembled block with jacket and collector hood installed (order burner and trim separately); sizes 3–6.
Knocked-down boiler: Assembled block, all other components are cartoned and shipped separately; all sizes.
DIMENSIONS
RATINGS
SGO-3 1-2½ 2 – 13½ 16⅞ ¾ ¾
SGO-4 1-2½ 2 – 16⅝ 20 ¾ ¾
SGO-5 1-2½ 2 – 19⅞ 22⅛ ¾ ¾
SGO-6 2-2½ 2 19 23 26¼ ¾ ¾
SGO-7 2-2½ 2 22⅛ 26⅛ 29⅜ ¾ ¾
SGO-8 2-2½ 2 25¼ 29¼ 32½ ¾ ¾
SGO-9 2-2½ 2 28⅜ 32⅜ 35⅝ ¾ ¾
Model
Supply
(in.)
Return
(in.)
Dimension (in.)
Tankless Heater
#35-S-29
Steam Steam A B L
Inlet & Outlet
(NPT) (in.)
Temp Control
(NPT) (in.)
Tapping
Location
Size
(in.) Steam
A 1½ Skim tapping
A 2½ Supply
A 2½ Supply (SGO-6 through 9)
B 1½ Plugged
B 2 Return
E ½
Pressure gauge & limit control
(when probe LWCO is used)
E & E ½ Low water cuto (float-type)
H ¾ Drain valve
L ¾
Pressure gauge & limit control
(when probe LWCO is used)
P ¾ Low water cuto (probe-type)
R ¾ Relief valve
S & S ½ Gauge glass
U 1
Take-o for indirect-fired water
heater or separate zone
U ¾
Tankless heater operating
control (SGO-6 through 9)
U* ¾
Tankless heater operating
control (SGO-3 through 5)
STANDARD EQUIPMENT:
BOILER
■
Factory tested and assembled
cast iron section assembly
(jacket and collector hood are not
assembled on 7, 8 and 9 section blocks)
■
Insulated steel jacket
■
Aluminized steel flue collector hood
with flue cap on top outlet (convertible
to rear outlet)
■
Swing-away burner mounting door
■
Refractory blanket and target wall in
combustion area
■
Tankless heater opening cover plate
■
Electrical junction box with
wiring harnesses
■
Junction box cover plate with service
switch
■
Two vent pipe brackets
■
Drain valve
■
Barometric damper
■
Oil vent damper
■
High limit pressure control
■
Low water cuto; Packaged units only
(float or probe type)
■
15 PSI ASME relief valve
■
Steam pressure gauge
■
Siphon
■
Gauge glass, cocks and guard
OPTIONAL EQUIPMENT:
■
High-eciency flame-retention Oil
Burner (Beckett AFG, Carlin EZ or Riello).
Specify 2-stage fuel unit (optional,
Beckett)
if required.
■
Tankless heaters and controls
■
Low water cutos
(float or probe type)
■
Weil-McLain five- and ten-year
homeowner protection plan
■
Weil-McLain indirect-fired
water heaters
LIMITED TRANSFERABLE
WARRANTY:
■
Residential: 10 Years Heat Exchanger;
2 Years Parts
■
Commercial: 10 Years Heat Exchanger;
1 Year Parts
1
No. 2 fuel oil-Commercial Standard Specification
CS75-56. Heating value of oil-140,000 BTU / Gal.
2
Based on standard test procedures prescribed by
the United States Department of Energy—see ratings
chart in boiler manual for further detail.
3
MBH refers to thousands of BTU per hour.
4
Rating under “DOE Heating Capacity” for SGO-8 and
-9 is AHRI gross output. DOE ratings do not apply to
boilers above 300 MBH.
5
Net AHRI ratings are based on net installed radiation
of sucient quantity for the requirements of the
building and nothing need be added for normal piping
and pickup. Steam ratings are based on a piping and
pickup allowance of 1.333. An additional allowance
should be made for unusual piping and pickup loads.
6
All boiler sizes use number 35-S-29 tankless heater.
Tankless heater rating is in gallons of water per
minute, heated from 40°F to 140°F with 200°F boiler
water temperature-tested in accordance with I-W-H
Testing and Rating Standard for Indirect Tankless
Water Heaters Test with Boilers.
7
Listed draft losses are for standard burner settings.