Noritz EZTR50 User Manual

FADK109
Rev. 06/17
Page 1
11160 Grace Avenue, Fountain Valley, CA 92708
Phone 866-766-7489 Fax 714-241-1196
This instructional manual is only intended for use by a qualified service professional or authorized Noritz
Service Representative. Any unauthorized use of this manual may result in voiding the warranty.
Contact Noritz Technical Support (866-766-7489) for additional support.
Noritz America Corporation
Heat Exchanger Replacement
EZ98 (EZTR50) [GQ-C2859WX-FF US]
EZ111 (EZTR75) [ GQ-C3259WX-FF US]
NCC199CDV [GQ-C3259WZ-FF US]
NRCB180DV [GHQ-C2801WX-FF US]
NRCB199DV [GHQ-C3201WX-FF US]

Noritz EZTR50 Specifications

General

Category	Tankless Water Heater
Gas Type	Natural Gas
Venting Type	Direct Vent
Water Connections	3/4" NPT
Minimum Activation Flow Rate	0.5 GPM
Fuel Type	Gas
Voltage	120V
Venting	2" PVC/CPVC

Summary

Unit Draining Procedures

Drainage using the Remote Controller

Step-by-step guide for draining the unit via the remote controller.

Manual Draining

Procedure for manual draining of water from the unit.

Operational Drainage Methods

Drainage using the Operation Panel

Procedure for draining the unit using the operation panel.

Manual Draining (Operation Panel)

Procedure for manual draining of water from the unit using the operation panel.

Unit Disassembly - Initial Steps

Remove Front Cover

Instructions for safely removing the front cover of the unit.

Wiring Harness and Component Disconnection

Unplug Wiring Harness

Guide to unplugging all wires attached to the main wiring harness.

Heat Exchanger and Related Parts Removal

Remove Heat Exchanger Assembly

Instructions for removing the main heat exchanger assembly from the unit.

Heat Exchanger Assembly and Rejoining

Replace Primary SS HEX

Final Assembly and Connections

Attach Pipes

Plug All Wires to Wiring Harness

Guide to reconnecting all wires to the main wiring harness.