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A.O. Smith
Water Heater
AHPW-25
A.O. Smith AHPW-25 User's Information Manual
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10
MINIMUM WIRE
SIZE
Allow
able Ampacities of Insulated Conductors
Single
-phase heat pump water heaters are two wir
e circuits.
Three-phase heaters are three wire cir
cuits. In addition to the
foregoing
, a grounded conductor is required. Not mor
e than
three conductors in raceway
, cable, or earth (directly buried),
based on ambient temperature of 30°C (86°F)
T
ABLE 3
13
15
Table of Contents
Table of Contents
3
Safe Installation, Use and Service
5
General Safety Information
6
Precautions
6
Grounding Instructions
6
Introduction
7
Qualifications
7
Preparing for the Installation
7
Principle of Operation
8
The Refrigeration Cycle
8
Source Water Temperature Range
8
Water Temperature Range
8
Refrigerant Charge
8
Equipment Disposal
8
Features & Components
9
Product Illustration
9
Water to Water Cycle
10
Rough in Dimensions
11
Performance Specifications
11
Installation Requirements
12
Water Temperature
12
Maximum System Temperature
12
Inlet & Outlet Water Temperature
12
Source Water Temperature
12
Entering Source Water Temperature
12
Locating the Water Heater
12
Indoor/Outdoor Installation
12
Freezing Temperatures
12
Coastal Regions
12
Clearances
13
Electrical Requirements
13
Minimum Wire Size
14
Water Piping
15
Minimum Pipe Size
15
Pipe Support
15
Pipe Installation
15
Cold Water Supply
15
Water Pressure
15
Closed Water Systems
15
Thermal Expansion
15
Mixing Valves
15
Contaminated Water
16
Temperature-Pressure Relief Valve
16
Tank Selection
16
Solar Tanks
16
Storage & Handling
16
Storage Recommendations
17
Installation
17
Required Ability
17
General
17
Required Tools & Materials
17
Installation & Start up Tools
17
Service Tools
18
Unit Placement
18
Mounting Frame
18
Pad Mounting
18
Electrical Connections
18
Correct Voltage and Phase
18
Branch Circuit Disconnect Switch
18
Transformer Configuration
19
Water Connections
19
Installation Instructions
19
Single Tank Configuration
19
Multiple Tank Configuration
20
Standard Tank Thermostat
20
Temperature Sensor Installation
20
Installation Checklist
20
Location
20
Water Piping
20
Electrical
21
Pre-Startup Checklist
21
Phase Startup Procedures
21
Single Phase Startup Procedures
22
Initial Start-Up
22
Master Control Panel Pre-Startup Checklist
22
Rotation Direction
23
Starting Sound
23
Start up
23
Setting Lower Limit Control Valve Limit for Single-Pass
24
Purging the Condenser on a Plc
24
Electronic Temperature Controls
24
Controller
24
Function Ranges & Settings
25
Parameter Settings
25
Screen Navigation
25
Basic Mode
25
Advanced Mode
25
Restricted Mode
26
Programmable Logic Controls
26
Plc Controller
26
Temperature & Setpoints
26
Setpoints Ranges & Safeties
26
Master Screens
27
Master Panel Home Screen
27
Master Panel Alarm Screen
27
Master Panel Configuration Screen
27
Master Screen Terminology
27
Home Screen
27
Alarm Screen
27
Configuration Screen
28
Master Control Panel Setup to Member Units
28
Master Control Unit Support Call Sequence of Operations
28
Member Screens
28
Single Unit Home Screen Operating with Master Controls
28
Single Unit Home Screen Operating as Asingle Unit (in Defrost)
28
Single Unit Home Screen Displaying Alarm Status
29
Single Unit Alarm Screen
29
Single Unit Pipe Configuration Screen
29
Single Unit Tank Configuration Screen
29
Single Unit Ip Address Configuration
29
Single Unit Heat Bank Screen
29
Member Screen Terminology
29
Home Screen
29
Alarm Screen
30
Configuration Screen
30
Stop Screen
30
Ip Configuration
30
Maintenance and Service
30
Routine Maintenance
30
Cleaning Internal Insulation
31
Checking Refrigerant Charge
31
Check Water Temperature Rise
31
Factory Charge
31
Superheat Calculation
31
Braze Plate Cleaning Instructions
31
Troubleshooting
33
Water Piping Diagrams
34
Limited Warranty
40
Service Log
42
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Service Handbook
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Installation & Service Manual
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4
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A.O. Smith AHPW-25 Specifications
General
Brand
A.O. Smith
Model
AHPW-25
Category
Water Heater
Language
English
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