Stainless Steel Single-Wall Indirect Water Heaters

        •  Stainless Steel Single-WallStainless Steel Heat Exchanger-Single-wall 1″ O.D. stainless steel coil. Maximum supply temperature from the boiler must not exceed 250°F.
        • Stainless Steel Tank and Heat Exchanger-Made from chromium molybdenum – titanium ferritic 444 stainless steel alloy.
        • Immersed Adjustable Honeywell Aquastat-Fast acting immersion aquastat for automatic temperature control (adjustable from 80°F to 160°F).
        • Supply and Return Connections-3/4″ NPT female connections are located on the front for both the boiler supply and boiler return (1″ NPT on NRTV-119-L).
        • Supply and Return Connections-1″ NPT female connections are located on the front for both the boiler collector supply and return.
        • 2″ Non-CFC Foam Insulation-Covers the side and top of tank, reducing the amount of heat loss. This results in less energy consumption, improved operation efficiencies and jacket rigidity.
        • Potable Water Connections-3/4″ NPT factory installed dielectric fittings extend water heater life and eases installation (11/4″ NPT on NRTV-119).
        • T&P Relief Valve-Included.
        • Steel Jacket
        • Brass Drain/Return Valve.
        • 5 Year Limited Warranty on tank and heat exchanger.
        • I=B=R Certified-These water heaters are rated by the Institute of Boiler and Radiation Manufacturers (I=B=R) to provide accurate performance data within the standards of the certification. The I=B=R rating is issued by the Hydronics Institute Division of GAMA and provide a recognized standard for proper comparison of hydronic appliances

Stainless Steel Indirect

Specifications

Model_Number Capacity A.
Ht. Floor to Heater Top
B.
Jacket Dia.
C.
Ht. Floor to
T&P Conn.
D.
Ht. Floor to
Water Conn.
E.
Ht. Floor to
Cold Water
Conn.
F.
Ht. Floor to
Exchanger
Outlet
G.
Ht. Floor to
Exchanger
Inlet
H.
Ht. Floor
to
Aquastat
Aprox.
Shp. Wt.
U.S. Gal. in. in. in. in. in. in. in. in. Lbs.
NRTV-40-L 40 35 ¼ 24 35 ½ 35 ½ 5 9 ½ 24 58 19 83
NRTV-52-L 40 45 58 24 45 78 45 58 5 9 ½ 28 38 19 93
NRTV-75-L 75 63 78 24 64 18 64 18 5 9 ½ 28 ¼ 19 117
NRTV-119-L 119 62 31 60 48 ½ 10 ¼ 16 ¼ 44 38 36 315

Water Heater Performance
Model_Number Maximum First Hour Rating (Gal/Hr) @ Continous Draw Rating (Gal/ Hr) @ Stand-by Heat Loss rating F/ Hr Approximate Boiler Output Needed for Ratings (BTU/Hr) Minimum Heat Source FLow Rate (Gal/ min) @
NRTV-40-L 158 @ 140°F 133 @135°F 0.9 88,000 8.0
NRTV-50-L 200 @ 140°F  165 @135°F 0.7 113,000 8.0
NRTV-75-L 225 @ 140°F  165 @135°F 0.5 113,000 8.0
NRTV-119-L 360 @ 140°F  280 @135°F 0.6 195,000 11.0