Rheem RUUD Commercial StorageTanks, ST120, ST175, ST120A, ST175A Specification Sheet

Commercial Storage Tanks

Available in 115 and 175 U.S. Gallon/435 and 662 Litre Models

Rheem-Ruud commercial storage tanks are vertical tanks
designed for applications that require large quantities of hot water
in short periods of time. When used in tandem with Rheem-Ruud
commercial water heating equipment, these storage tanks
provide the flexibility needed for many Commercial applications.
Installed individually, or in parallel manifold, these storage tanks
can provide 80% draw capability without an appreciable
temperature decrease in single temperature applications.

Construction Features:

• Long life tank design –

proprietary steel formulation
with two coats of high tem­perature porcelain enamel
to maximize corrosion
resistance resulting in a
superior tank design. Two
heavy duty magnesium
anode rods are installed for
longer tank life.

• Space saving design –

unlike other storage tanks,
the ST120 can pass
through a 30" opening and
the ST175 only requires a
33" opening – ideal for
boiler room doors.

• Efficient design –

2" of rigid polyurethane
foam insulation provides
superior insulating qualities
resulting in reduced operat­ing costs. Our patented
process of injecting foam
into the insulating cavity
adds additional durability
and toughness to the baked
enamel steel outer jacket.

• Tank openings –

circulating line connections
and hot outlet are 2" NPT
on the ST120 and 2-1/2"
NPT on the ST175. Other
openings are provided for
relief valve and temperature
control.

ST175A equipped with a
hand-hole cleanout.

•

Factory manifold kits –

factory kits are available for
the ST120 model. Copper
sweat fittings and tubing are
precut and packaged at the
factory. Each component is
identified for ease of assembly
and installation. This method
will assure that multiple tanks
(2, 3 or 4) will perform as a
single unit and give the advan­tage of extreme flexibility.

Certifications and Ratings:

•

Efficiency –

these models comply with ASHRAE 90.1b-1992

(Part of the Federally mandated Energy Policy Act (EPact).

Continued on reverse.

APPROXIMATE WIDTH REQUIRED FOR
MANIFOLDED STORAGE TANKS (Shown in English and Metric)

ST120(A)

MANIFOLD

WITH FACTORY

TYPE UNITS MANIFOLD KITS

ST175(A)

Duplex inches 58 66

mm 1473 1676

Triplex inches 87 102

mm 2210 2591

Quadruplex inches 116 137

mm 2946 3480

Storage Tank(s) shall be model ________________, manufactured by RHEEM-RUUD. Storage Tank(s) shall have
a storage capacity of ________ gallons. Tank(s) interior shall be double coated with a high temperature porcelain
enamel and furnished with two magnesium anode rods rigidly supported. Storage Tank(s) shall exceed the
efficiency requirement of ASHRAE Standard 90.1b-2001. Tank(s) shall have a working pressure rating of
_______ psi, and shall be completely assembled. Tank(s) shall be insulated with 2" of rigid polyurethane foam
insulation. Storage Tank(s) shall be covered by a five year limited warranty against tank leaks.

ADD FOR ASME CONSTRUCTION

Storage Tank(s) shall be constructed in accordance with the requirements of the ASME Boiler Pressure Vessel
Code, Section IV Part HLW.

Limited Warranty

This product features a five year limited warranty against tank leaks. Please refer to Commercial Warranty Information
brochure for complete warranty information.

Recommended Specifications:

COMMERCIAL

WATER HEATERS

Rheem Canada Ltd./Ltée,128 Barton Street West, Hamilton, Ontario L8N 3P3 • www.rheem.com

03/05 WP FORM NO. RR102C-3CAN

In keeping with its policy of continuous progress and product improvement, Rheem-Ruud reserves the right to make changes without notice.

Commercial Storage Tanks continued.

HOT

HOT OUTLET
OPENING

1" NPT
RELIEF VALVE
OPENING

3/4" NPT
THERMOMETER
OPENING

3/4" NPT
AQUASTAT
OPENING

OPENINGS
FOR
CIRCULATING
LINES

D

C

A

B

DIMENSIONAL INFORMATION

(All dimensions shown in English and Metric)

WATER CONNECTIONS APPROXIMATE

MODEL

TOP FRONT

SHIPPING WEIGHT

NUMBER UNITS

AB C D

OUTLET SIDE STD. ASME

ST120(A) inches 59-1/4 28-1/4 11-1/16 4-1/16 2 2 300 lbs. 340 lbs.

mm 1505 718 281 103 51 51 136 kgs. 154 kgs.

ST175(A) inches 67-1/4 32-1/4 12-9/16 5-9/16 2-1/2 2-1/2 600 lbs. 600 lbs.

mm 1708 819 319 141 64 64 272 kgs. 272 kgs.

TANK INFORMATION

(Shown in English and Metric)

MAXIMUM WORKING

MODEL

TANK CAPACITY PRESSURE

NUMBER GALLONS LITERS STD. ASME

ST120(A) 115 435 150 PSI 160 PSI

1034 kPa 1103 kPa

ST175(A) 175 662 150 PSI 150 PSI

1034 kPa 1034 kPa

NOTE: 1" NPT drain opening on ST175(A). Handhole cleanout on ST175(A) only.