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Fire-Coil 175-400
Natco Fire-Coil 175-400 Manuals
Manuals and User Guides for Natco Fire-Coil 175-400. We have
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Natco Fire-Coil 175-400 manual available for free PDF download: Installation And Operation Instructions Manual
Natco Fire-Coil 175-400 Installation And Operation Instructions Manual (32 pages)
Volume Water Heaters
Brand:
Natco
| Category:
Water Heater
| Size: 0.76 MB
Table of Contents
Table of Contents
2
General Information
3
Introduction
3
Warranty
3
Technical Assistance
3
Section
3
Section
4
Site Location
5
1. Installation Information
5
2. Outdoor Installation (U.S. Only)
5
3. Flooring - Typical Installation
6
Combustion and Ventilation Air Supply
6
1. Outdoor Air Supply
7
2. Indoor Air Supply
7
3. Exhaust Fans or Vents
7
Venting of Combustion Products
7
1. General Information
7
2. Replacement of Existing Heater
8
Water Flow
8
1. Reversible Water Connections
8
2. Water Chemistry
10
3. Freeze Protection
11
Water Hardness
11
5. Pump Requirements
11
6. Pressure Buildup in Water System
11
7. Pressure Relief Valve
11
8. Water Pressure
11
9. Pump Installation
14
10. Storage Tank Installation
14
11. Thermal Circulation of Hot Water in Cold Water Supply Lines
14
Gas Supply and Piping
15
1. General Instructions
15
2. Special Precautions for Propane Gas
16
Electrical Wiring
16
Combined Space Heating/Potable Water Heating Systems
16
1. Combined Space Heating
16
2. Potable Water Heating
16
Installation Instructions
4
General Information
4
Field Assembly
4
Section 3.
17
Operating Instructions
17
Normal Operating Sequence
17
Start-Up Procedure
17
Setting the Temperature Controls
17
Section 4.
20
Adjustment for Minimum Input Rate (Models with Modulating Gas Valve)
20
Hi-Limit Switch Checkout
20
Shut-Down Procedure
20
Maintenance
20
General Instructions
20
Replacement of Gas Controls
21
Heat Exchanger
22
Inspecting the Heat Exchanger
22
Troubleshooting
23
Section 5.
23
Cleaning the Heat Exchanger
23
Gas Pressure Tests
23
Checking the Main Line Gas Pressure
23
Checking the Manifold
24
Regulated Gas Pressure
24
Electrical Troubleshooting
24
Heater Does Not Come on
24
A-2. Checking the Manifold Regulated Gas Pressure
24
Testing the Transformer
25
Testing the Electrical Power Supply
25
Testing the Manual Reset
25
Hi-Limit Switch
25
Testing the Flow Switch
25
Testing the Fusible Link
26
(Flame Roll-Out Switch)
26
Testing the Fuse
26
(For Spark Ignition)
26
(For Standing Pilot)
27
10. Testing the High Voltage Ignition Lead
27
11. Testing the Safety Shutoff (for Standing Pilot)
28
12. Testing the Safety Shutoff
28
(For Automatic Pilot)
28
13. Testing the Igniter Electrode
28
14. Testing the Pilot Thermocouple (for Standing Pilot)
28
15. Testing for Pilot Burner (for Spark Ignition)
28
16. Testing for Burner Ignition (for Standing Pilot)
29
17. Heater will Not Shut off
29
18. On-Off Main Burner Cycling
29
19. Testing the Terminal Strip/External Controls
29
Section 6.
30
Parts List
30
General Information
30
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