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A.O. Smith
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dre-52
A.O. Smith dre-52 Instruction Manual
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1
Instruction Manual
PRINTED IN THE U
.
S
.A
0908
196674-002
PLACE THESE INSTRUCTIONS
ADJACENT TO HEA
TER
AND NOTIFY OWNER T
O KEEP FOR FUTURE REFERENCE.
COMMERCIAL
ELECTRIC W
A
TER HEA
TERS
Th
ank
you
for
buy
in
g
th
is
ener
gy
ef
ci
ent
wat
er
hea
te
r
.
We appreciate your condence in our products.
MODEL
S D
RE-
52
/
8
0/1
20 SERIES 1
00
& D
VE
-
52
/
80/1
20 SERIES 1
00
INST
ALLA
TION - OPERA
TION - SERVICE
- MAINTENANCE - LIMITED W
ARRANTY
500 T
ennessee Waltz Parkway
Ashland City
, TN 37015
ASME
(OPTIONAL)
2
Table of Contents
Instruction Manual
1
Safe Installation, Use and Service
2
General Safety Information
3
Table of Contents
4
Introduction
4
Preparing for the New Installation
4
Dimensions and Capacities Data
5
Approvals
6
Features and Components
7
Locating the New Water Heater
9
Installation
10
Required Ability
10
General
10
Mixing Valve Usage
10
Chemical Vapor Corrosion
10
Circulating Pump
10
Insulation Blankets
10
Temperature-Pressure Relief Valve
10
Temperature-Pressure Relief Valve
11
Water Line Connection
11
Closed Water System
11
Thermal Expansion
11
Electrical
12
Operation
19
General
19
Filling the Water Heater
19
Start up
19
Draining the Water Heater
19
Temperature Regulation
20
High Temperature Devices
20
Thermostat Controls
20
Thermostat Settings - Surface Mount Control Models
20
Thermostat Settings - Electronic Control Models
21
Electronic Control Models Operation
21
Control System Features
21
Control System Navigation
21
Desktop Screen
21
Temperatures Menu
23
Temperature Settings
24
Heater Status Menu
25
Economy Mode Setup Menu
25
Economy Mode Settings
26
Economy Mode Settings
28
Alarm Output Setup Menu
29
Display Settings Menu
29
Heater Information Menu
29
Current Fault / Alert Menu
30
Fault Occurrence Menu
30
Restore Factory Defaults Menu
30
Restore Factory Defaults Menu
31
Maintenance
31
General
31
Flushing
32
Sediment Removal
32
Water and Lime Scale Removal
32
Troubleshooting Checklist
33
Not Enough or no Water
33
Water Heater Makes Strange Sounds
33
If You Cannot Identify or Correct the Source of Malfunction
33
Leakage Checkpoints
34
Piping Diagrams
35
Piping Diagrams
42
Ashland City, TN
43
Warranty
43
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A.O. Smith dre-52 Specifications
General
Brand
A.O. Smith
Model
DRE-52
Capacity
50 gallons
Power Source
Electric
Voltage
240V
Wattage
4500W
Type
Electric
Heating Element
Dual Element
Warranty
6 years
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