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Manual 238-49640-00A
SERVICE
MANUAL
Troubleshooting Guide
and Instructions for Service
(To be performed ONLY by
qualified service providers)
Models Covered
by This Manual:
ECO-Defender Safety System
®
Models
UDS140S*FRN
UDS150S*FRN
UDH1504T*FRN
UDH165T*FRN
UDH175S*FRN
UDH50T45FR*N
UDH65T45FR*N
UDH75T50FR*N
(*) Denotes Warranty Years
Ultra Low NOx Direct Vent Water Heaters
UDS / UDH Series