Dunkirk H2OI Stainless Steel Dual Coil Solar Water Heaters - Manual (Page 5)

5
BOTTOM SOLAR
COIL RETURN
TOP COIL
SUPPLY
BOTTOM SOLAR
COIL SUPPLY
T+P VALVE
TOP COIL
RETURN
COLD
WATER IN
HOT WATER
OUT
BOTTOM HEATING COIL
FOR SOLAR
BOTTOM COIL
3/8" ID THERMAL WELL
TOP HEATING COIL
FOR BACKUP
TOP COIL
3/8" ID THERMAL WELL
DUAL COIL UNITS
1/2" NPT RECIRC.
RETURN PORT
DRAIN VALVE
3/8" ID
THERMAL WELL
4" X 10"
ELECTRICAL BOX
TYPICAL ALL
ELECTRIC BACKUP UNITS
1.5
Heat exchanger coil outputs
Model Max. Recovery Max. Recovery Water Flow Pressure Drop
(gal/hr.) (gal/hr.) Through Coil Through Coil
Top Coil Bottom Coil (gal./min.) (Ft. Water)
115 Gal. Units 190 214 10.0 3.9
80 Gal. Units 180 214 10.0 3.6
60 Gal. Units 185 214 10.0 3.5
Note: All Ratings are based on 180 degree F boiler water supply and 50 degree F cold Water inlet.
In the interest of continuous improvement, specifications are subject to change without notice.
For all units with 3500 watt Electric Backup
Model First Hour Rating (gal/hr.) Continuous Rating (gal/hr.)
140 F 115 F 140 F 115 F
115 Gal. Units 73.9 80.0 15.9 22.0
80 Gal. Units 55.9 62.0 15.9 22.0
60 Gal. Units 45.9 52.0 15.9 22.0
DuAl COIl uNITS ElECTRIC bACKup uNITS
Table 2