Submittal Sheet
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583
Headquarters: 20 Industrial Way, Rochester, NH, USA 03867 • 603.335.6300 • Fax 603.335.3355
9 Brigden Gate, Halton Hills, Ontario, Canada L7G 0A3 (905) 203-0600 Fax: (905) 636-0666
www.Laars.com Litho in U.S.A. © Laars Heating Systems 1810 Document 11047C
B
C
A
D
G
H
F
E
B
C
A
D
G
H
F
E
D/E
A
C
G
H
F
B
8"
(203)
(mm)
HOT
AQUASTAT
COLD
D/E
A
C
G
H
F
B
8"
(203)
(mm)
HOT
AQUASTAT
COLD
LAARS-STOR
®
SS Single-Wall Indirect Water Heater
LAARS-STOR
®
SS Models
Meet or exceed ASHRAE 90.1b (current standard) C.E.C. Listed
80% Recovery Efficiency
Model
Number
Capacity
F
Floor to
Exchanger
Outlet
in.
Approx.
Shipping
Weight
lbs.
E
Floor to
Cold Water
Conn.
in.
A
Floor to
Heater
Top
in.
D
Floor to
Hot Water
Conn.
in.
C
Floor to
T&P
Conn.
in.
B
Jacket
Dia.
in.
Gal.
U.S.
29
38
50
73
111
LS-SS-30-L
LS-SS-40-L
LS-SS-50-L
LS-SS-75-L
LS-SS-120-L
24
31
42
60
92
31
5
/8
38
1
/4
48
65
5
/8
63
3
/8
22
1
/2
29
1
/8
39
3
/4
56
1
/2
65
3
/4
32
1
/2
38
7
/8
48
7
/8
66
1
/4
53
1
/2
10
10
10
10
11
3
/4
22
5
/8
24
3
/4
29
1
/4
33
5
/8
40
16
1
/2
18
3
/4
19
1
/2
19
1
/2
31
3
/8
75
91
103
142
217
32
1
/2
38
7
/8
48
7
/8
66
1
/4
2
11
/16
24
24
24
24
30
1
/4
Gal.
Imp.
G
Floor to
Exchanger
Inlet
in.
H
Floor to
Aquastat
in.
Model
Number
Capacity
F
Floor to
Exchanger
Outlet
mm.
Approx.
Shipping
Weight
kg.
E
Floor to
Cold Water
Conn.
mm.
A
Floor to
Heater
Top
mm.
D
Floor to
Hot Water
Conn.
mm.
C
Floor to
T&P
Conn.
mm.
B
Jacket
Dia.
mm.
Liters
G
Floor to
Exchanger
Inlet
mm.
803
972
1219
1667
1610
610
610
610
610
768
572
740
1010
1435
1670
826
987
1241
1683
1359
826
987
1241
1683
68
254
254
254
254
299
575
629
743
854
1016
419
476
495
495
797
34
41
47
64
98
110
142
189
274
420
LS-SS-30-L
LS-SS-40-L
LS-SS-50-L
LS-SS-75-L
LS-SS-120-L
H
Floor to
Aquastat
mm.
—
—
—
42
3
/4
—
—
—
17
7
/8
K
Floor to
Spare 3/4"
Hot Water
Conn.
in.
—
—
—
1086
K
Floor to
Spare 3/4"
Hot Water
Conn.
mm.
L
Floor to
Spare 3/4"
Cold Water
Conn.
in.
—
—
—
454
L
Floor to
Spare 3/4"
Cold Water
Conn.
mm.
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" NPT (1" NPT on
LS-SS-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.
MODELS: LS-SS-30-L, LS-SS-40-L, LS-SS-50-L, LS-SS-75-L MODEL: LS-SS-120-L
Model
Number
AHRI Certified Water Heater Ratings
Standby
Heat Loss
Rating
°F/Hr.
Continuous
Draw
@135°F
Gal./Hr.
First Hour
Delivery
Rating
Gal./Hr.
LS-SS-30-L
LS-SS-40-L
LS-SS-50-L
LS-SS-75-L
LS-SS-120-L
179
237
269
367
409
160
209
229
307
319
0.8
0.6
0.5
0.4
0.3
105,000
135,000
145,000
193,000
199,000
14.0
14.0
14.0
14.0
9.0
Minimum
Heat
Source
Flow Rate
Gal./Min.
Minimum
Heat
Required
Rate
BTU/Hr.
Model
Number
Standby
Heat Loss
Rating
°C/Hr.
Continuous
Draw
@57°C
Liters/Hr.
First Hour
Delivery
Rating
Liters/Hr.
LS-SS-30-L
LS-SS-40-L
LS-SS-50-L
LS-SS-75-L
LS-SS-120-L
678
897
1018
1389
1548
606
791
867
1162
1208
0.44
0.33
0.27
0.22
0.16
30.8
39.6
40.5
56.6
58.3
53.0
53.0
53.0
53.0
34.0
Minimum
Heat
Source
Flow Rate
Liters/Min.
Minimum
Heat
Required
Rate
kW/Hr.
NOTE: These certified ratings were obtained with a heat source output and flow rate as specified and a 180°F (82°C) boiler water supply
temperature. Other results will be obtained under different conditions.
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583
Headquarters: 20 Industrial Way, Rochester, NH, USA 03867 • 603.335.6300 • Fax 603.335.3355
9 Brigden Gate, Halton Hills, Ontario, Canada L7G 0A3 (905) 203-0600 Fax: (905) 636-0666
www.Laars.com Litho in U.S.A. © Laars Heating Systems 1810 Document 11047C
B
C
A
D
G
H
F
E
B
C
A
D
G
H
F
E
D/E
A
C
G
H
F
B
8"
(203)
(mm)
HOT
AQUASTAT
COLD
D/E
A
C
G
H
F
B
8"
(203)
(mm)
HOT
AQUASTAT
COLD
LAARS-STOR
®
SS Single-Wall Indirect Water Heater
LAARS-STOR
®
SS Models
Meet or exceed ASHRAE 90.1b (current standard) C.E.C. Listed
80% Recovery Efficiency
Model
Number
Capacity
F
Floor to
Exchanger
Outlet
in.
Approx.
Shipping
Weight
lbs.
E
Floor to
Cold Water
Conn.
in.
A
Floor to
Heater
Top
in.
D
Floor to
Hot Water
Conn.
in.
C
Floor to
T&P
Conn.
in.
B
Jacket
Dia.
in.
Gal.
U.S.
29
38
50
73
111
LS-SS-30-L
LS-SS-40-L
LS-SS-50-L
LS-SS-75-L
LS-SS-120-L
24
31
42
60
92
31
5
/8
38
1
/4
48
65
5
/8
63
3
/8
22
1
/2
29
1
/8
39
3
/4
56
1
/2
65
3
/4
32
1
/2
38
7
/8
48
7
/8
66
1
/4
53
1
/2
10
10
10
10
11
3
/4
22
5
/8
24
3
/4
29
1
/4
33
5
/8
40
16
1
/2
18
3
/4
19
1
/2
19
1
/2
31
3
/8
75
91
103
142
217
32
1
/2
38
7
/8
48
7
/8
66
1
/4
2
11
/16
24
24
24
24
30
1
/4
Gal.
Imp.
G
Floor to
Exchanger
Inlet
in.
H
Floor to
Aquastat
in.
Model
Number
Capacity
F
Floor to
Exchanger
Outlet
mm.
Approx.
Shipping
Weight
kg.
E
Floor to
Cold Water
Conn.
mm.
A
Floor to
Heater
Top
mm.
D
Floor to
Hot Water
Conn.
mm.
C
Floor to
T&P
Conn.
mm.
B
Jacket
Dia.
mm.
Liters
G
Floor to
Exchanger
Inlet
mm.
803
972
1219
1667
1610
610
610
610
610
768
572
740
1010
1435
1670
826
987
1241
1683
1359
826
987
1241
1683
68
254
254
254
254
299
575
629
743
854
1016
419
476
495
495
797
34
41
47
64
98
110
142
189
274
420
LS-SS-30-L
LS-SS-40-L
LS-SS-50-L
LS-SS-75-L
LS-SS-120-L
H
Floor to
Aquastat
mm.
—
—
—
42
3
/4
—
—
—
17
7
/8
K
Floor to
Spare 3/4"
Hot Water
Conn.
in.
—
—
—
1086
K
Floor to
Spare 3/4"
Hot Water
Conn.
mm.
L
Floor to
Spare 3/4"
Cold Water
Conn.
in.
—
—
—
454
L
Floor to
Spare 3/4"
Cold Water
Conn.
mm.
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" NPT (1" NPT on
LS-SS-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.
MODELS: LS-SS-30-L, LS-SS-40-L, LS-SS-50-L, LS-SS-75-L MODEL: LS-SS-120-L
Model
Number
AHRI Certified Water Heater Ratings
Standby
Heat Loss
Rating
°F/Hr.
Continuous
Draw
@135°F
Gal./Hr.
First Hour
Delivery
Rating
Gal./Hr.
LS-SS-30-L
LS-SS-40-L
LS-SS-50-L
LS-SS-75-L
LS-SS-120-L
179
237
269
367
409
160
209
229
307
319
0.8
0.6
0.5
0.4
0.3
105,000
135,000
145,000
193,000
199,000
14.0
14.0
14.0
14.0
9.0
Minimum
Heat
Source
Flow Rate
Gal./Min.
Minimum
Heat
Required
Rate
BTU/Hr.
Model
Number
Standby
Heat Loss
Rating
°C/Hr.
Continuous
Draw
@57°C
Liters/Hr.
First Hour
Delivery
Rating
Liters/Hr.
LS-SS-30-L
LS-SS-40-L
LS-SS-50-L
LS-SS-75-L
LS-SS-120-L
678
897
1018
1389
1548
606
791
867
1162
1208
0.44
0.33
0.27
0.22
0.16
30.8
39.6
40.5
56.6
58.3
53.0
53.0
53.0
53.0
34.0
Minimum
Heat
Source
Flow Rate
Liters/Min.
Minimum
Heat
Required
Rate
kW/Hr.
NOTE: These certified ratings were obtained with a heat source output and flow rate as specified and a 180°F (82°C) boiler water supply
temperature. Other results will be obtained under different conditions.
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583
Headquarters: 20 Industrial Way, Rochester, NH, USA 03867 • 603.335.6300 • Fax 603.335.3355
9 Brigden Gate, Halton Hills, Ontario, Canada L7G 0A3 (905) 203-0600 Fax: (905) 636-0666
www.Laars.com Litho in U.S.A. © Laars Heating Systems 1810 Document 11047C
B
C
A
D
G
H
F
E
B
C
A
D
G
H
F
E
D/E
A
C
G
H
F
B
8"
(203)
(mm)
HOT
AQUASTAT
COLD
D/E
A
C
G
H
F
B
8"
(203)
(mm)
HOT
AQUASTAT
COLD
LAARS-STOR
®
SS Single-Wall Indirect Water Heater
LAARS-STOR
®
SS Models
Meet or exceed ASHRAE 90.1b (current standard) C.E.C. Listed
80% Recovery Efficiency
Model
Number
Capacity
F
Floor to
Exchanger
Outlet
in.
Approx.
Shipping
Weight
lbs.
E
Floor to
Cold Water
Conn.
in.
A
Floor to
Heater
Top
in.
D
Floor to
Hot Water
Conn.
in.
C
Floor to
T&P
Conn.
in.
B
Jacket
Dia.
in.
Gal.
U.S.
29
38
50
73
111
LS-SS-30-L
LS-SS-40-L
LS-SS-50-L
LS-SS-75-L
LS-SS-120-L
24
31
42
60
92
31
5
/8
38
1
/4
48
65
5
/8
63
3
/8
22
1
/2
29
1
/8
39
3
/4
56
1
/2
65
3
/4
32
1
/2
38
7
/8
48
7
/8
66
1
/4
53
1
/2
10
10
10
10
11
3
/4
22
5
/8
24
3
/4
29
1
/4
33
5
/8
40
16
1
/2
18
3
/4
19
1
/2
19
1
/2
31
3
/8
75
91
103
142
217
32
1
/2
38
7
/8
48
7
/8
66
1
/4
2
11
/16
24
24
24
24
30
1
/4
Gal.
Imp.
G
Floor to
Exchanger
Inlet
in.
H
Floor to
Aquastat
in.
Model
Number
Capacity
F
Floor to
Exchanger
Outlet
mm.
Approx.
Shipping
Weight
kg.
E
Floor to
Cold Water
Conn.
mm.
A
Floor to
Heater
Top
mm.
D
Floor to
Hot Water
Conn.
mm.
C
Floor to
T&P
Conn.
mm.
B
Jacket
Dia.
mm.
Liters
G
Floor to
Exchanger
Inlet
mm.
803
972
1219
1667
1610
610
610
610
610
768
572
740
1010
1435
1670
826
987
1241
1683
1359
826
987
1241
1683
68
254
254
254
254
299
575
629
743
854
1016
419
476
495
495
797
34
41
47
64
98
110
142
189
274
420
LS-SS-30-L
LS-SS-40-L
LS-SS-50-L
LS-SS-75-L
LS-SS-120-L
H
Floor to
Aquastat
mm.
—
—
—
42
3
/4
—
—
—
17
7
/8
K
Floor to
Spare 3/4"
Hot Water
Conn.
in.
—
—
—
1086
K
Floor to
Spare 3/4"
Hot Water
Conn.
mm.
L
Floor to
Spare 3/4"
Cold Water
Conn.
in.
—
—
—
454
L
Floor to
Spare 3/4"
Cold Water
Conn.
mm.
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" NPT (1" NPT on
LS-SS-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.
MODELS: LS-SS-30-L, LS-SS-40-L, LS-SS-50-L, LS-SS-75-L MODEL: LS-SS-120-L
Model
Number
AHRI Certified Water Heater Ratings
Standby
Heat Loss
Rating
°F/Hr.
Continuous
Draw
@135°F
Gal./Hr.
First Hour
Delivery
Rating
Gal./Hr.
LS-SS-30-L
LS-SS-40-L
LS-SS-50-L
LS-SS-75-L
LS-SS-120-L
179
237
269
367
409
160
209
229
307
319
0.8
0.6
0.5
0.4
0.3
105,000
135,000
145,000
193,000
199,000
14.0
14.0
14.0
14.0
9.0
Minimum
Heat
Source
Flow Rate
Gal./Min.
Minimum
Heat
Required
Rate
BTU/Hr.
Model
Number
Standby
Heat Loss
Rating
°C/Hr.
Continuous
Draw
@57°C
Liters/Hr.
First Hour
Delivery
Rating
Liters/Hr.
LS-SS-30-L
LS-SS-40-L
LS-SS-50-L
LS-SS-75-L
LS-SS-120-L
678
897
1018
1389
1548
606
791
867
1162
1208
0.44
0.33
0.27
0.22
0.16
30.8
39.6
40.5
56.6
58.3
53.0
53.0
53.0
53.0
34.0
Minimum
Heat
Source
Flow Rate
Liters/Min.
Minimum
Heat
Required
Rate
kW/Hr.
NOTE: These certified ratings were obtained with a heat source output and flow rate as specified and a 180°F (82°C) boiler water supply
temperature. Other results will be obtained under different conditions.
Customer Service and Product Support: 800.900.9276 • Fax 800.559.1583
Headquarters: 20 Industrial Way, Rochester, NH, USA 03867 • 603. 335. 6300 • Fax 603. 335. 3355
9 Brigden Gate, Halton Hills, Ontario, Canada L7G 0A3 • 905.203.0600 • Fax 905.636.0666
www.Laars.com Litho in U.S.A. © Laars Heating Systems 1810 Document 11072
English Metric