Brochure
114
143
182
227
284
439
30
38
48
60
75
116
LS-SW-2-30-L
LS-SW-2-40-L
LS-SW-2-50-L
LS-SW-2-65-L
LS-SW-2-80-L
LS-SW-2-120-L
22
22
22
22
24
28
1
/4
56
56
56
56
61
72
85
104
112
150
150
159
72
87
102
135
135
142
33
5
/8
41
1
/8
46
1
/4
59
1
/4
59
62
1
/2
28
1
/4
34
3
/8
40
1
/8
53
1
/8
52
7
/8
55
3
/4
87
106
119
152
152
161
14
14
14
14
14
16
34
3
/8
41
7
/8
47
60
59
3
/4
63
1
/4
164
185
195
225
250
370
74
85
89
102
114
167
11
1
/2
11
1
/2
11
1
/2
11
1
/2
11
1
/2
11
1
/2
5
3
/8
5
3
/8
5
3
/8
5
3
/8
5
3
/8
6
3
/8
70
70
70
70
70
72
30
30
30
30
30
30
27
1
/2
27
1
/2
27
1
/2
27
1
/2
27
1
/2
28
1
/2
Residential Laars-Stor
™
C
Height Floor
to T&P Conn.
in. cm.
D
Height Floor
to Water Conn.
in. cm.
B
Height Floor
to Heater Top
in. cm.
A
Jacket
Diameter
in. cm.
Capacity
Liters
U.S.
Gal.
25
32
40
50
62
97
Imp.
Gal.
Model
Number
E
Height Floor to
Exchanger Outlet
in. cm.
F
Height Floor to
Exchanger Inlet
in. cm.
G
Height Floor
to Aquastat
in. cm.
Shipping Weight
Approx.
lbs. kg.
LAARS-STOR
™
RESIDENTIAL ENERGY SAVER
SINGLE-WALL INDIRECT WATER HEATER
The ingenious Laars-Stor
™
single wall was engineered to provide the lowest pressure drop,
the highest hot water output and the highest amount of effective actual heat transfer area
of any indirect fired water heater in the industry.
• Heat Exchanger—Single wall 1
1
⁄2" glass
coated steel.
• Factory Installed Sediment Reduction
System—Cold water inlet sediment
reducing device. Helps prevent sediment
build-up in tank. Increases first hour
delivery of hot water while minimizing
temperature build-up at top of tank.
• Three Protective Anode Rods—Provides
added protection against corrosion for
long trouble-free service.
• Glass Lined Tank—Laars Heating
Systems water heater tanks are protected
from the corrosive effects of hot water by
an exclusive ceramic porcelain-like
coating.
• Fully Automatic Controls—Immersed
Honeywell aquastat.
• Factory Installed Nipples—For longer
water heater life, easier installation.
• 2" Non-CFC Foam Insulation—Covers
the sides and top of tank to save energy
by retarding loss of heat.
• Supply and Return Connections—The
1" NPT female connections are located
on the front for both the boiler supply
and boiler return.
• Stand-by Heat Loss—Less than
1
⁄2°F per
hour.
• Brass Drain Valve.
• T&P Relief Valve Included—All models
feature opening on side
of tank.
• Limited Lifetime Warranty on Steel
Tank and Heat Exchanger—Heavy
gauge steel automatically formed, rolled
and welded to assure a continuous
seam for glass lining.
• Six Year Limited Warranty on Parts.
Meets or exceeds the insulating
standards established under
ASHRAE Standard 90.1b
(current edition).
General: All units are certified at
300 PSI (2068 kPa) test pressure
and 150 PSI working pressure
(1034 kPa). All potable water
connections are
3
⁄4" (19mm) NPT
on 8" (203mm) centers.
Dimensions and specifications
subject to change without notice
in accordance with our policy of
continuous product improvement.
D
B
F
E
G
C
A
D
B
F
E
G
C
A
POTABLE
CONNECTIONS
ANODE RODS
(TYPICAL)
(TYPICAL)
Based on 200°F boiler water temperature and 50°F
potable water inlet.
Model
Number
140°F 115°F
DOE Water Heater Performance
SW-2-30-L
SW-2-40R-L
SW-2-50R-L
SW-2-65-L
SW-2-80-L
SW-2-120-L
Maximum First
Hour Rating
(Gal.) @
279
288
297
306
321
357
429
438
447
456
470
507
140°F 115°F
4.2
4.2
4.2
4.2
4.2
4.2
6.7
6.7
6.7
6.7
6.7
6.7
Continuous
Draw Rating
(Gal./Min.) @
Approximate
Boiler Output
Needed for
Ratings (BTU/Hr.)
220,000
220,000
220,000
220,000
220,000
220,000
Model
Number
AHRI Certified Water Heater Ratings
SW-2-30-L
SW-2-40R-L
SW-2-50R-L
SW-2-65-L
SW-2-80-L
SW-2-120-L
First Hour
Delivery
@ 135°F
(Gal.)
255
260
265
275
295
325
Continuous
Draw Rating
@ 135°F
(Gal./Hr.)
235
235
235
235
235
235
Standby
Heat Loss
Rating
(°F/Hr.)
1.2
1.1
0.9
0.7
0.6
0.4
Minimum
Heat Source
Flow Rate
(Gal./Min.)
13.7
13.7
13.7
13.7
13.7
13.7
Minimum
Output Rate
of Heat Source
(BTU/Hr.)
157,000
157,000
157,000
157,000
157,000
157,000
These certified ratings were obtained with a heat source output
rate and flow rate as specified and a 180°F boiler water supply
temperature. Other results will be obtained under different
conditions.