Navien NPN User Manual

2 Contents
6. Appendixes 55
6.1 Covering the Clamps with Front Cover
Cap
55
6.2 Technical Data
56
6.3 Wiring Diagram
57
6.4 Ladder Diagram
58
6.5 Component Assembly Diagrams and
Parts Lists
59
6.6 Installation Check list
70
6.7 Navien HAir Add-on Controller Kit
(Optional)
72
6.8 Navien HotButton Kit (Optional)
73
6.9 Requirements for the State of
Massachusetts
74
1. Safety Information 3
2. About the Water Heater
6
2.1 Items Included 6
2.2 Accessories
6
2.3 Specifications
7
2.4 The Front Panel
8
2.5 Components
9
2.6 Dimensions
11
2.7 Rating Plate
13
3. Installing the Water Heater 14
3.1 Choosing an Installation Location 14
3.2 Mounting the Water Heater to the Wall
18
3.3 Connecting the Gas Supply
19
3.4 Connecting the Water Supply
25
3.5 Venting the Water Heater (Indoor Models
Only)
31
3.6 Connecting the Power Supply
42
3.7 Setting the DIP Switches
44
4. Configuring the Remote Controller
System
46
4.1 Included Items 46
4.2 Connecting the Extension Cable
46
4.3 Attaching the Wall Mounting Bracket
46
4.4 Remote Controller
47
4.5 Multi Remote Controller System
48
4.6 Entering Lock Mode
50
4.7 Setting the clock
50
4.8 Setting the Recirculation timer
51
4.9 Starting Recirculation
52
4.10 Canceling all timer settings
52
5. Installing a Cascade System 53
5.1 Connecting Water Supplies 53
5.2 Connecting the Communication Cables
54
Contents

Navien NPN Specifications

General

Type	Tankless
Fuel Type	Natural Gas or Propane
Efficiency	Up to 0.96 UEF
Voltage	120V
Temperature Range	98°F - 140°F
Installation Type	Indoor/Outdoor
Max GPM	11.2 GPM
Gas Connection	3/4 inch NPT
Water Connection	3/4 inch NPT
Vent Size	2 inch or 3 inch PVC/CPVC
Warranty	15 years heat exchanger, 5 years parts