Navien NFC-250/175H Combi-boiler Manuals

Manuals and User Guides for Navien NFC-250/175H Combi-boiler. We have 3 Navien NFC-250/175H Combi-boiler manuals available for free PDF download: Installation Manual, User's Information Manual, Quick Installation Manual

Navien NFC-250/175H Installation Manual (151 pages)

Condensing Combi-Boilers

Brand: Navien | Category: Boiler | Size: 47 MB

Table of Contents
3
About the Boiler
7
Included Items
7
Accessories
7
Specifications
8
Components
11
Dimensions
13
Rating Plate
14
Installing the Boiler
15
Removing the Wood Pallet from the Boiler
15
Choosing an Installation Location
16
Mounting the Boiler to the Wall
18
Installing the System Piping
20
Installing a Space Heating System
20
Installing a Domestic Hot Water (DHW) System
26
Connecting the Condensate Drain
28
Filling the System
32
Testing the Water System
33
Considerations for System Applications
34
Examples of Electrical Connections
45
Connecting the Gas Supply
56
Gas Pipe Sizing Tables
59
Measuring the Inlet Gas Pressure
60
Venting for Combustion Air
62
Venting the Boiler
63
About the Vent Installation Detector
65
Selecting a Vent Type
68
Selecting Vent Pipe Materials
73
Measuring Vent Length
74
Terminating the Vent
75
Setting the DIP Switches
79
DIP Switch 1 (Set of 6 Switches)
79
Dip Switch 2 (Set of 8 Switches)
80
Connecting the Power Supply
81
Installing a Cascade System
82
Connecting Water Supplies
82
Cascade System - Recirculation System Application Example
84
Connecting the Communication Cables
86
Installing a Common Vent System
88
About the Common Vent System
88
Navien Common Vent Collar Kit (Back-Draft Damper)
93
Starting the Common Vent System
94
Connecting and Terminating the Vent Pipe
98
Setting up the Common Vent System
99
Common Vent Termination Clearances
99
Installing a Condensate Drain
101
Maintenance
102
Installation Checklist
103
Operating the Boiler
106
Operating the Boiler for the First Time
106
Turning the Boiler on or off
107
Start-Up Wizard
108
Adjusting the System Temperatures
109
Accessing Basic Menu Items
110
Accessing Advanced Menu Items
118
Understanding Error Codes
127
Appendixes
129
Gas & High Altitude Conversion
129
Wiring Diagram
137
Ladder Diagram
138
Outdoor Temperature Sensor
139
Outdoor Reset Control
139
Component Assembly Diagrams and Parts Lists
141

Navien NFC-250/175H User's Information Manual (29 pages)

Condensing Combi-Boilers

Brand: Navien | Category: Boiler | Size: 3 MB

Navien NFC-250/175H Quick Installation Manual (4 pages)

Brand: Navien | Category: Boiler | Size: 6 MB

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Boiler Water Heater Remote Control Controller Heater

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