Installers Guide

32
CONDENSING EXHAUST SINGLE VENT
SV
DIRECT VENT
DV
OUTDOOR EXHAUST
OD
CONCENTRIC EXHAUSTC
O
NCENTRIC EXHA
U
S
T
DVC
WATER HEATERS
NHXXX-DV
Hydronic
Boiler
NC380-SV-ASME
Commercial
Water Heater
NC250-ASME
Commercial
Water Heater
NCC1991
Commercial
Condensing
Water Heater
Model No. Description
NH199-DV Residential/Commercial Boiler, 199,900 Btuh, ASME certied
NH150-DV Residential/Commercial Boiler, 150,000 Btuh, ASME certied
Model No. Description
NC380-SV-ASME Indoor/Outdoor, 380,000 Btuh, max.13.2 gpm, ASME stainless steel
Model No. Description
NC250-DV-ASME Indoor Direct Vent, 250,000 Btuh, max. 11.1 gpm, ASME stainless steel
NC250-SV-ASME Indoor/Outdoor, 250,000 Btuh, max. 11.1 gpm, ASME stainless steel
Model No. Description
NCC1991-DV
SV Convertible, Low NOx, Indoor Direct Vent, 199,900 Btuh,
max. 11.1 gpm, stainless steel
NCC1991-OD Low NOx, Outdoor, 199,900 Btuh, max. 11.1 gpm, stainless steel
Add “-NG” or “-LP” to the end of the model number to specify gas type.
Table of Contents
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WATER HEATERS
ACCESSORIES
SINGLE WALL VENT
CONCENTRIC VENT
PVC VENT
VENT ACCESSORIES
SUS VENT KITS
VENTING DIAGRAM
3
6
9
13
15
16
18
19