LAARS-STORTM SS Stainless Steel Single
LAARS-STORTM SS Stainless Steel
Single-Wall Indirect Water Heater
The LAARS-STORTM SS Models Feature:
■ Stainless Steel Heat Exchanger—Single-wall 1" O.D. stainless steel
coil. Maximum supply temperature from the boiler must not exceed
240°F.
■ Stainless Steel Tank and Heat Exchanger—Made from chromium
molybdenum - titanium ferritic 444 stainless steel alloy.
■ Immersed Adjustable Honeywell Aquastat—Fast acting immersion
aquastat for automatic temperature control (adjustable from 80°F to
160°F).
■ Supply and Return Connections—3⁄4" NPT female connections are
located on the front for both the boiler supply and boiler return (1" NPT
on RTV-120).
■ 2" Non-CFC Foam Insulation—Covers the side and top of tank,
reducing the amount of heat loss. This results in less energy
consumption, improved operation efficiencies and jacket rigidity.
■ Potable Water Connections—3/4" NPT (11⁄4" NPT on RTV-120).
■ T&P Relief Valve—Included.
■ Steel Jacket.
■ Low Restriction Brass Drain/Cold Inlet Valve.
LS-RTV-40-L
■ AHRI Certified—These water heaters are rated by the Air-Conditioning,
Heating, and Refrigeration Institute to provide accurate performance
data within the standards of the certification. This certification provides
a recognized standard for proper comparison of hydronic appliances.
Limited Lifetime Tank and Heat Exchanger Warranties / 6-Year Limited Warranty on Component Parts.
5-Year Limited Tank Warranties on Commercial Models/1-Year Limited Warranty of Component parts
For products installed in USA, Canada and Puerto Rico. Some states do not allow limitations on warranties.
See complete copy of the warranty included with the heater.
MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING U.S. PATENTS: 5,682,666; 7,634,976; 5,660,165; 5,954,492; 6,056,542; 6,935,280; 5,372,185; 5,485,879; 5,574,822; 7,971,560; 7,992,526;
6,684,821; 6,442,178; 7,334,419; 7,866,168; 7,270,087; 7,007,748; 5,596,952; 6,142,216; 7,699,026; 5,341,770; 7,337,517; 7,665,211; 7,665,210; 7,063,132; 7,063,133; 7,559,293; 7,900,589; 5,943,984;
8,082,888; 5,988,117; 7,621,238; 7,650,859; 5,761,379; 7,409,925; 5,277,171; 8,146,772; 7,458,341; 2,262,174. OTHER U.S. AND FOREIGN PATENT APPLICATIONS PENDING. CURRENT CANADIAN PATENTS:
2,314,845; 2,504,824; 2,108,186; 2,143,031; 2,409,271; 2,548,958; 2,112,515; 2,476,685; 2,239,007; 2,092,105; 2,107,012.
LAARS-STORTM SS Energy Saver Stainless Steel Indirect Water Heater
LAARS-STORTM SS Energy Saver Models
Model
Number
LS-RTV-40-L
LS-RTV-52-L
LS-RTV-75-L
LS-RTV-120-L
Model
Number
LS-RTV-40-L
LS-RTV-52-L
LS-RTV-75-L
LS-RTV-120-L
A
Floor to
Heater
Top
B
Jacket
Dia.
C
Floor to
T&P
Conn.
D
Floor to
Hot Water
Conn.
E
Floor to
Cold Water
Conn.
G
Floor to
Exchanger
Inlet
F
Floor to
Exchanger
Outlet
H
Floor to
Aquastat
U.S.
Gal.
Imp.
Gal.
in.
in.
in.
in.
in.
in.
in.
in.
K
Floor to
Spare 3/4"
Hot Water
Conn.
in.
40
52
75
119
33
43
63
100
351/4
455/8
637/8
605/8
24
24
24
301/4
351/2
457/8
641/8
61
351/2
457/8
641/8
491/2
5
5
5
111/4
91/2
91/2
91/2
177/8
245/8
283/8
281/4
451/2
19
19
19
36
—
—
—
423/4
—
—
—
177/8
83
93
117
Capacity
A
Floor to
Heater
Top
B
Jacket
Dia.
C
Floor to
T&P
Conn.
D
Floor to
Hot Water
Conn.
E
Floor to
Cold Water
Conn.
F
Floor to
Exchanger
Outlet
G
Floor to
Exchanger
Inlet
H
Floor to
Aquastat
mm.
mm.
mm.
mm.
mm.
mm.
mm.
mm.
L
Floor to
Spare 3/4"
Cold Water
Conn.
mm.
Approx.
Shipping
Weight
Liters
K
Floor to
Spare 3/4"
Hot Water
Conn.
mm.
151
197
284
450
894
1153
1610
1540
609
609
609
768
897
1163
1628
1549
897
1163
1628
1257
127
127
127
286
238
238
238
454
614
724
724
1156
482
482
482
914
—
—
—
1086
—
—
—
454
38
42
53
143
Capacity
L
Floor to
Spare 3/4"
Cold Water
Conn.
in.
Approx.
Shipping
Weight
lbs.
315
kg.
AHRI Certified Water Heater Ratings
Model
Number
LS-RTV-40-L
LS-RTV-52-L
LS-RTV-75-L
LS-RTV-120-L
First Hour
Delivery
Rating
Continuous
Draw
@135°F
Standby
Heat Loss
Rating
Minimum Heat
Required
Rate
Gal./Hr.
158
200
225
360
Gal./Hr.
133
165
165
280
°F/Hr.
0.9
0.7
0.5
0.6
BTU/Hr.
88,000
113,000
113,000
195,000
NOTE: These certified ratings were obtained with a heat source output and
Minimum
Heat Source flow rate as specified and a 180°F boiler water supply temperature. Other
Flow Rate results will be obtained under different conditions.
Gal./Min.
8.0
8.0
8.0
11.0
T&P
ANODE
OUTLET
B
T&P
B
D A
C A
C
D
K
G
H
G
H
E
LS-RTV-40-L
LS-RTV-52-L
LS-RTV-75-L
F
F
L
E
LS-RTV-120-L
(Floor to Top Spare 3/4" NPT Tank Connection is 423⁄4")
(Floor to Bottom Spare 3/4" NPT Tank Connection is 177⁄8")
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 (11⁄4" (32mm) NPT on RTV-120).
Dimensions and specifications subject to change without notice in accordance with our policy of continuous product improvement.
Toxic chemicals, such as those used for boiler treatment, shall NEVER be introduced into the potable water side. The potable side of this unit may
NEVER be connected to any existing heating system or component(s) previously used with a non-potable water heating appliance. The heat
exchanger side of the unit may be used in space heating applications.
800.900.9276 • Fax 800.559.1583 (Customer Service, Service Advisors)
20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355 (Applications Engineering)
1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
www.Laars.com
Litho in U.S.A. © Laars Heating Systems 1402 Document 11047B
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