Amtrol Premier Series Application Manual page 4

Commercial applications require rapid recovery to meet high demands.
accommodate the building(s) heating load. When both coils are utilized to heat domestic water, Premier
have a heat transfer capability far in excess of traditional single-coil and tank-in-tank indirects. The resulting performance
can allow competitive bids by using fewer heaters than the competition (Figure 2).
Dual Coil Units Can Reduce the Number of Hot Water Makers Required
Figure 2
Example: 80 Apartment units
700,000 BTUH domestic hot water demand
2-3GPM showerhead
2-3 person occupancy
BOILER
OUTPUT
BTU/HR
80,000
100,000
120,000
140,000
160,000
180,000
200,000
240,000
280,000
320,000
*360,000
400,000
*Double wall models maximum 360,000 BTUH with both coils.
NOTE: THESE FIGURES WERE OBTAINED USING 180°F BOILER WATER AT FLOWS OF APPROXIMATELY
15 GPM TOTAL FOR BOTH HEAT EXCHANGERS. UNLIKE MOST INDIRECTS, EXTREME BOILER TEMPS AND
EXOTIC CIRCULATOR PUMPS ARE NOT REQUIRED TO ACHIEVE THESE NUMBERS.
Product & Benefits (Con't)
Domestic Water Performance
DC-80 / DC-80DW
FIRST–HOUR CONTINUOUS
RATING FLOW
(90ºF rise) (70ºF rise
GALLONS steady state)
GPH
117 139
202 173
229 208
256 242
283 277
310 312
337 346
389 413
443 482
469 551
550 620
603 688
These sites also have large boilers to
DC-120/DC-120DW
BOILER FIRST–HOUR
OUTPUT RATING
(90ºF rise)
BTU/HR GALLONS
80,000 209
100,000 236
120,000 263
140,000 289
160,000 316
180,000 343
200,000 370
240,000 423
280,000 477
320,000 530
*360,000 584
400,000 637
-4-
DC Series
™
CONTINUOUS
FLOW
(70ºF rise
steady state)
GPH
139
173
208
242
277
312
346
413
482
551
620
688