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Commercial Gas Boilers
Revised November 2009
Page 2 of 4
www.hotwater.com
AOSDG25300
* Natural gas only
Gas supply pressure: 13:8” w.c. maximum, 5.5” w.c. minimum
Electrical requirements: 120 VAC, 15 Amps
MODEL
NUMBER
BTU
INPUT
PER
HOUR*
GPH
OR
LPH
RECOVERY -GALLONS OR
LITRES PER HOUR AT
DEGREE RISE
40°F
100°F
140°F
22°C
56°C 78°C
DW-720
720,000
GPH
1767
707 505
LPH
6690 2676
1911
DW-840
840,000
GPH
2062
825 589
LPH
7805 3122
2230
DW-960
960,000
GPH
2356
943 673
LPH
8920 3568 2548
DW-1080
1,080,000
GPH
2684
1073
767
LPH
10,158
4063
2902
DW-1210
1,210,000
GPH
3007
1203
859
LPH
11,381
4552
3252
DW-1350
1,350,000
GPH
3355
1342
958
LPH
12,698
5079 3628
DW-1480
1,480,000
GPH
3588
1435 1025
LPH
13,581
5432
3880
DW-1610
1,610,000
GPH
3903
1561
1115
LPH
14,774
5910
4221
DW-1810
1,810,000
GPH
4388
1755
1254
LPH
16,609
6644 4746
INPUT AND RECOVERY
MINIMUM CLEARANCES TO COMBUSTIBLES -
ALL MODELS
Inches CM
TOP 12
30.5
WATERSIDE
18
45.7
BLANK SIDE
6
15.5
REAR
6
15.5
VENT
6
15.5
FRONT
Alcove
OTHER DURA-MAX® FEATURES
MANUAL RESET, HIGH LIMIT
l
ASME-RATED PRESSURE RELIEF VALVE
l
125#
l
SAFETY FLOW
l
SWITCH
l
REDUNDANT GAS VALVE
DURA-MAX® OPTIONS
q CSD-1
q NEW YORK CODE
q CALIFORNIA CODE
q PANEL MOUNTED INLET/OUTLET DIAL
q THERMOMETERS AND PRESSURE GAUGE
q MOTORIZED MODULATING FIRE
q DUAL STAGE FIRING
q RIGHT HAND GAS AND/OR WATER CONNECTIONS
q CUPRO-NICKEL HEAT EXCHANGER
q SIDEWALL VENT KITSALL-BRONZE PUMP
q HIGH VELOCITY HARD WATER PUMP
q LOW WATER CUTOFF