Intellihot iQ251 Tankless Water Heater Manuals

Manuals and User Guides for Intellihot iQ251 Tankless Water Heater. We have 2 Intellihot iQ251 Tankless Water Heater manuals available for free PDF download: Operation And Installation Manual, Troubleshooting Manual

Intellihot iQ251 Operation And Installation Manual

Intellihot iQ251 Operation And Installation Manual (58 pages)

Brand: Intellihot | Category: Water Heater | Size: 13 MB

Table of Contents

Table of Contents
3
1 General Information

4
2 Safety

5
- Safety Signal Words
  5
- Installation Warnings
  5
3 Technical Data

7
- Specifications Chart
  7
- High Elevation Installations
  7
- Dimensional Specifications
  8
  - Front View
    8
  - Top View
    8
- Connections
  9
4 Preparation before Installation

10
- Selecting an Installation Site
  10
5 Wall Mounting

11
- Clearance Requirements
  11
- Mounting the Unit to the Wall
  11
6 Gas Connections

12
- Installation Guidelines
  12
- Excess Flow Valve (EFV)
  12
- Gas Pipe Sizing Tables
  13
- Gas Pressure Regulator
  14
- Venting of Gas Supply Regulators
  14
7 Venting and Materials

15
- Venting Guidelines
  15
- Exhaust Vent Materials
  15
- Air Intake Vent Materials
  15
- Venting Configurations
  16
- Two Pipe Vent System (Direct Vent)
  16
- Venting Termination
  19
- Venting Clearance Specifications
  21
- Common Venting for Multiple Units
  22
8 Water Connections

26
- Water Line Connection Guidelines
  26
- Water Quality
  26
- Hot Water Side Connection
  26
- Cold Water Side Connection
  27
- Condensate Line Installation
  27
- External Recirculation Options
  28
9 Electrical

30
- Electrical Code Requirements
  30
- Electrical Connection and Polarity
  30
10 Propane (LPG) Conversion

31
- General Information
  31
- Procedure
  31
11 Adjusting CO Level

32
- General Information
  32
- Procedure
  32
12 Operation

34
- Control Panel
  34
- Display Icons
  34
- Turning Water Heater on and off
  35
- Resetting (Clear) Error Codes
  35
- Setting the Time
  35
- Adjusting the Water Temperature
  35
- Real Time Temperature and Flow of the System
  36
- Error Screen
  36
13 Programming

37
- Modes of Operation
  37
- Viewing and Setting Modes of Operation
  37
14 Maintenance

42
- Draining the Water Heater
  42
- Filling the Water Heater
  42
- Descaling the Unit
  42
15 Troubleshooting

43
- Error Code Chart
  43
- Wiring Diagram Chart
  45
- Operational Diagram
  46
16 Serviceable Parts

47
- Electrical Components
  47
- Water Lines and Fittings
  48
- Blower, Gas Valve, and Exhaust
  49
- Ignition Components
  50
17 Requirements for State of Massachusetts

51
18 Warranty

52
19 Product Warranty Card

55

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Intellihot iQ251 Troubleshooting Manual

Intellihot iQ251 Troubleshooting Manual (30 pages)

Brand: Intellihot | Category: Boiler | Size: 4 MB

Table of Contents

Troubleshooting
1
Table of Contents
3
Error Code List & Suggested Tool List
4
E1-Blower Speed Fault
5
E3-Blocked Flue
6
E7-Ignition Failure
7
E9-Temperature Sensor Shorted
8
EA-Temperature Sensor Open Circuit
9
EC-Flue Temperature Exceeded
10
Ed-Heat Exchanger Outlet Temperature Exceeded
11
- Flashing Icon
  12
- Icon Flashing
  13
- Recirculation Icon Flashing
  14
Blank (Blue)/Illegible Display
15
Breaker Tripped (Over-Load)
16
Dead Unit-No Powerup
17
No Hot Water
18
Rough Ignition
19
Rumbling
20
Water Leaks
21
Appendix
22
- Blower Replacement
  22
- Gas Valve Replacement
  23
- Electrode Replacement
  25
- Controller Pin Layout
  26
- Wiring Diagram (Wall-Hung)
  26
- Wiring Diagram (Floor-Mount)
  27

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