Navien Gas Water Heater Operation
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Installation Manual - Contents
Accessories
Included with the Water Heater -------------------------- 3
Optional Accessories --------------------------------------- 4
Specifications
-------------------------------------------------------------------- 5
Components & Dimensions Key Components : NR-A ----------------------------------- 6
Key Components : NP-A ----------------------------------- 7
Dimensions : NR-A,NP-A ---------------------------------- 8
Key Components : NR -------------------------------------- 9
Key Components : NP -------------------------------------- 10
Dimensions : NR, NP --------------------------------------- 11
Warnings
Installation Warnings ---------------------------------------- 12
Rating Plate
Getting Started ------------------------------------------------ 13
Check Rating Plate ------------------------------------------ 14
Location Selection
Locating the Water Heater -------------------------------- 15
Mounting the Unit to the Wall ----------------------------- 16
Plumbing
Plumbing and Water Connection Guidelines --------- 17
Water Piping Guidelines ----------------------------------- 18
Pressure Relief Valve
-------------------------------------------------------------------- 19
Condensate Disposal
Disposal of Condensate ----------------------------------- 20
Condensate Drain & Cleaning --------------------------- 21
Gas Piping
Gas Piping Guidelines ------------------------------------- 22
Gas Supply Line Pressures ------------------------------- 22
Gas Piping Sizing Chart ----------------------------------- 23
Gas Pressure Testing
Measuring Inlet Gas Pressure ---------------------------- 24
Venting
Warning -------------------------------------------------------- 25
Venting Guidelines ------------------------------------------- 25
Contaminated Make-up Air Will Damage the Unit ---- 28
Exhaust Vent Pipe Materials ------------------------------- 28
Venting Clearances ------------------------------------------ 29
Allowable Vent Lengths ------------------------------------- 30
Vent Configuration Options -------------------------------- 31
Electrical Connections
-------------------------------------------------------------------- 36
Remote Cotroller Installation -------------------------------------------------------------------- 37
PCB Board Settings
-------------------------------------------------------------------- 38
Cascade Connection and Set-up Procedures ----------------------------------------------- 39
DIP Switch Settings
-------------------------------------------------------------------- 45
Installation Checklist
-------------------------------------------------------------------- 49
Factory Setting of DIP Switch ------------------------------------------------------------------ 56
Completing the Install
-------------------------------------------------------------------- 56
Wiring Diagram
-------------------------------------------------------------------- 57
Ladder Diagram
-------------------------------------------------------------------- 61
Components Diagram & Parts List ------------------------------------------------------------- 65
CONTENTS
ACCESSORIES
