Table Of Contents; Recovery Capacity; Approvals; Recovery Rating - A.O. Smith DRE Installation And Operation Manual

Contents
ROUGH-IN-DIMENSIONS .......................................
GET TO KNOW YOUR WATER HEATER ...............
RECOVERY CAPACITY ...........................................
APPROVALS ............................................................
MODEL AND RATING PLATE ..................................
FOREWORD ............................................................
GENRAL SAFETY INFORMATION ..........................
INSTALLATION ........................................................
Required Ability ........................................................
General ....................................................................
Location ...................................................................
Waterline Connections .............................................
Relief Devices ..........................................................
Temperature Limiting Control(s) ..............................
Temperature Regulation ..........................................
PIPING DIAGRAMS ................................................. 7-14
ELECTRICAL
General ....................................................................
Branch Circuit ..........................................................

Recovery Rating

Standard
Models KW Input
DRE/DVE 6
DRE/DVE 9
DRE/DVE 12
DRE/DVE 13.5
DRE/DVE 15
DRE/DVE 18
DRE/DVE 24
DRE/DVE 27
DRE/DVE 30 102,390
DRE/DVE 36 122,868
DRE/DVE 40.5 138,226
DRE/DVE 45 153,585
DRE/DVE 54 184,302
*Figured at 1 KW (3413 Btu) = 4.1 gallons at 100°F temperature rise.
To determine recovery rate per minute, divide recovery rate per hour by 60.

Approvals

Page
2
2
3
3
4
4
4
5
5
5
5
5
5-6
6
6
14
15
RECOVERY RATE IN GALLONS PER HOUR*
Temperature Rise °F
BTU/
Hour 30° 40°
20,478 82 62
30,717 123 92
40,956 164 123
46,075 184 138 111
51,195 205 154 123
61,434 246 184 148
81,912 328 246 197
92,151 369 276 221
410 307 246
492 369 295
554 418 3332
615 461 369
738 553 443
All models bear the
National Sanitation
Foundation seal of
approval.
Amperage Table/Overcurrent Protection .................
Heater Circuits - DVE Models ..................................
Control Circuit .......................................................... 16-17
Power Circuit ............................................................ 18-21
OPERATION
General ....................................................................
Filling ........................................................................
Startup ......................................................................
High Temperature Limiting Device ...........................
Draining ....................................................................
Circulating Pump .....................................................
MAINTENANCE
General ....................................................................
Flushing ...................................................................
Sediment Removal ...................................................
Lime Scale Removal ................................................ 23-24
Checklist ..................................................................
Replacement Parts ..................................................
LEAKAGE CHECKPOINTS .....................................
LIMITED WARRANTY ..............................................
50° 60° 70° 80°
49 41 35 31
74 62 53 46
98 82 70 61
92 79 69
102 88 77
123 105 92
164 140 123
184 158 138
205 176 154
246 211 184
277 237 208
307 263 230
369 316 277
All models are listed
by Underwriters
Laboratories Inc.
3
90° 100° 110° 120°
27 25 22 21
41 37 34 31
55 49 45 41
62 55 50 46
68 61 56 51
82 74 67 61
109 98 89 82
123 111 101 92
137 123 112 102
164 148 134 123
185 166 151 138
205 184 168 154
246 221 201 184
Page
16
16
22
22
22
22
22
22
23
23
23
24
24
25
26
130° 140°
19 18
28 26
38 35
43 40
47 44
57 53
76 70
85 79
95 88
113 105
128 119
142 132
170 158