8
LP-83 Rev. 8.14.14
A. REDUCED BOILER INPUT SIZING GUIDE
NOTE:
IT IS NOT RECOMMENDED TO REDUCE BOILER INPUT WHEN USING DOUBLE WALL TANKS.
MODEL
GROSS OUT
BTU/HR
GROSS OUT
BTU/HR
GROSS OUT
BTU/HR
GROSS OUT
BTU/HR
GROSS OUT
BTU/HR
GROSS OUT
BTU/HR
GROSS OUT
BTU/HR
199,000
220,000
240,000
260,000
280,000
300,000
320,000
A
370
370
370
-
-
-
-
SSU-60
B
266
266
266
-
-
-
-
A
489
503
503
503
503
503
-
SSU-80
B
359
370
370
-
370
370
-
A
457
470
543
627
645
645
645
SSU-119
B
335
345
399
460
474
474
474
Table 3
– DESCRIBES COLD START FIRST HOUR RATINGS (A and B) AND BOILER SIZE
PRODUCT LINE CONSISTS OF VARIOUS MODELS AVAILABLE IN DIFFERENT SIZES
CALL THE FACTORY FOR PRODUCT AND WARRANTY INFORMATION
“DW”
(double wall heat exchanger) models are available in the 45, 60, 80, and 119 US gallon sizes.
“C”
commercial models for dual systems or commercial applications; use one coil for wood boiler, the other for oil boiler; adaptable to solar systems as
well; good for hotels, motels, and apartments. Models are available in the 45, 60, 80, and 119 US gallon sizes.
DETERMINE AMOUNT OF DOMESTIC HOT WATER NEEDED. THEN USE THE CHART BELOW TO OPTIMIZE SUPERSTOR
ULTRA AND BOILER SIZING.
NOTE:
FIRST DRAW AT 140
o
F at 90
o
F
Δ
T. (FOR PERFORMANCE AT 115
o
F, MULTIPLY BY 1.56 FOR MINUTES OF WATER DRAW.)
LINE A
GALLONS
- LOW MASS BOILERS THAT TAKE LESS THAN 90 SECONDS TO HEAT TO TEMPERATURE
LINE B GALLONS
- HIGH MASS BOILERS THAT TAKE GREATER THAN 90 SECONDS TO HEAT TO TEMPERATURE
MODEL
2 GPM
2.5 GPM
3 GPM
3.5 GPM
4 GPM
4.5 GPM
5 GPM
A
9.5
8.0
7.0
5.5
4.5
4.0
3.5
SSU-20
B
8.5
7.5
6.5
5.0
4.0
3.5
3.0
A
16.0
13.0
10.0
7.5
6.0
5.5
5.0
SSU-30
B
14.0
12.0
9.0
7.0
5.5
5.0
4.5
A
18.0
14.0
12.0
9.0
6.5
6.0
5.5
SSU-30LB
B
17.0
12.0
10.0
8.0
6.0
5.5
5.0
A
23.0
18.0
14.0
11.0
8.5
7.5
7.0
SSU-45
B
18.0
15.0
13.0
10.0
7.5
7.5
6.5
A
∽
∽
∽
29.0
20.0
17.0
14.0
SSU-45C
B
45.0
24.0
26.0
18.0
16.0
13.0
10.0
A
∽
∽
∽
∽
36.0
30.0
22.0
SSU-60
B
∽
∽
∽
∽
29.0
19.0
12.0
A
∽
∽
∽
∽
∽
46.0
29.0
SSU-60C
B
∽
∽
∽
∽
∽
30.0
21.0
A
∽
∽
∽
∽
∽
∽
∽
SSU-80
B
∽
∽
∽
∽
∽
∽
∽
A
∽
∽
∽
∽
∽
∽
∽
SSU-80C
B
∽
∽
∽
∽
∽
∽
∽
A
∽
∽
∽
∽
∽
∽
∽
SSU-119
B
∽
∽
∽
∽
∽
∽
∽
A
∽
∽
∽
∽
∽
∽
∽
SSU-119C
B
∽
∽
∽
∽
∽
∽
∽
Table 4 - NOTE: THIS INFORMATION IS BASED ON BOILER SIZE CONFORMING TO THE MINIMUM BTU/H REQUIRED TO
ACHIEVE FIRST HOUR RATINGS, OBTAINABLE FROM CHART ABOVE.
∽
- Indicates infinity (continuous duty).
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