4
SPECIFICATIONS AND PERFORMANCE RATINGS
*DOE TEST METHOD BASED ON 90°F. TEMPERATURE RISE, 50°/140° W/ BOILER WATER AT 180°F
NOTE: TANK RECOVERY FROM COLD START WILL BE BETWEEN 55-65 MINUTES WHEN SIZED WITH CORRECT FLOW
RATE, BOILER SIZE, AND PRESSURE DROP RATINGS FROM LIST IN ABOVE CHART.
* PRESSURE DROP RATING FOR SSU-45 AND SSU-60
6 GPM: 8.2'
7 GPM: 12.8'
** PRESSURE DROP RATING SSU-80DW AND SSU-119 DW
10 GPM: 13.6'
12 GPM: 15.9'
ULTRA COMMERCIAL SERIES
*DOE TEST METHOD BASED ON 90°F. TEMPERATURE RISE, 50°/140° W/ BOILER WATER AT 180°F
NOTE: TANK RECOVERY FROM COLD START WILL BE BETWEEN 10-13 MINUTES WHEN SIZED WITH CORRECT FLOW
RATE, BOILER SIZE, AND PRESSURE DROP RATINGS FROM LIST IN ABOVE CHART.
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4
CONTINUOUS FLOW PERFORMANCE CALCULATION
FIRST HOUR RATING – (.75 x TANK CAPACITY) = CONTINUOUS FLOW
EXAMPLE: SSU-45C = 314 – (.75 x 45) = 280.25
(FHR)
(CONTINUOUS FLOW)
*
*
**
**
MODEL
DIMENSIONS
CAPACITY
HEAT EXCH.
SURFACE
RECOMM.
FLOW RATE
PRESSURE
DROP (FEET)
180° BOILER WATER
FIRST HOUR RATINGS
180° BOILER WATER
2ND HOUR RATINGS
HT.
DIA.
140°F
115°F
140°F
115°F
SSU-45DW
52 ½"
19 ¼"
45
20 SQ. FT.
10
7.9
70 GAL
108 GAL
40 GAL
63 GAL
SSU-60DW
52 ½"
23 ¼"
60
20 SQ. FT.
10
7.9
90 GAL
144 GAL
50 GAL
76 GAL
SSU-80DW
72"
23 ¼"
80
20 SQ. FT.
12
9.1
138 GAL
215 GAL
72 GAL
113 GAL
SSU-119DW
73 ½"
27"
119
20 SQ. FT.
14
11.3
210 GAL
326 GAL
110 GAL
171 GAL
TANK SIZE
FLOOR TO
BOILER
SUPPLY
FLOOR TO
BOILER
RETURN
FLOOR TO
DOMESTIC
OUTPUT
DOMESTIC
CONNECTIONS
TEST
PRESSURE
WORKING
PRESSURE
SHIPPING
WEIGHT
180° BOILER
BTU/SIZE
SSU-45DW
9"
4 ½"
46"
¾" NPT MALE
300 PSI
150 PSI
88 LBS.
107,000
SSU-60DW
9"
4 ½"
46"
1" NTP MALE
300 PSI
150 PSI
110 LBS.
176,000
SSU-80DW
29"
6"
69 ¼"
1 ½" NPT MALE
300 PSI
150 PSI
141 LBS.
208,000
SSU-119DW
30 ¼"
7 ¼"
66"
1 ½" NPT MALE
300 PSI
150 PSI
210 LBS.
231,000
