Rheem Commercial Storage Tanks80 115 175 Gallon Users Manual RR102C 3

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2015-02-05

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Commercial Storage Tanks
Available in 80, 115 and 175 Gallon 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 ST80 and 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 ST80 and ST120
and 2-1/2" NPT on the
ST175. Other openings are
provided for relief valve and
temperature control.
ST175 equipped with a
hand-hole cleanout.

Certifications and Ratings:
• Efficiency – these models meet or exceed thermal efficiency and
standby loss requirements of current ASHRAE standards. (Part of the
Federally mandated Energy Policy Act (EPact)).

ASME Models
Available

• Optional construction – ASME construction is available on all
storage tank models. Model numbers are ST80A, ST120A and
ST175A
• T&P valve – must be ordered separately based on water heater
BTU input.

Continued on reverse.

Commercial Storage Tanks continued.

DIMENSIONAL INFORMATION (All dimensions shown in English and Metric)
WATER CONNECTIONS
TOP
FRONT
OUTLET
SIDE

APPROXIMATE
SHIPPING WEIGHT
STD.
ASME

MODEL
NUMBER

UNITS

A

B

C

D

ST80(A)

inches

58-5/16

24-7/16

13-3/16

6-3/16

2

2

220 lbs.

mm

1481

621

335

157

51

51

100 kgs.

118 kgs.

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.

260 lbs.

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

1" NPT
RELIEF VALVE
OPENING

APPROXIMATE WIDTH REQUIRED FOR
MANIFOLDED STORAGE TANKS (Shown in English and Metric)
ST80(A)

ST120(A)

UNITS

WITH FACTORY
MANIFOLD KITS

WITH FACTORY
MANIFOLD KITS

ST175(A)

inches

54

58

66

mm

1372

1473

1676

inches

82

87

102

2083

2210

2591

MANIFOLD
TYPE
Duplex
Triplex

mm

Quadruplex

HOT OUTLET
OPENING

inches

108

116

137

mm

2743

2946

3480

HOT

3/4" NPT
THERMOMETER
OPENING
B

TANK INFORMATION (Shown in English and Metric)
MODEL
NUMBER

TANK CAPACITY
GALLONS
LITERS

MAXIMUM WORKING
PRESSURE
STD.
ASME

ST80(A)

80

303

150 PSI

125 PSI

1034 kPa

862 kPa

ST120(A)

115

435

150 PSI

160 PSI

1034 kPa

1103 kPa

ST175(A)

175

662

150 PSI

150 PSI

1034 kPa

1034 kPa

3/4" NPT
AQUASTAT
OPENING
A
OPENINGS
FOR
CIRCULATING
LINES
C
D

Recommended Specifications:
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. 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.

C O M M E R C I A L
W A T E R H E A T E R S
In keeping with its policy of continuous progress and product improvement, Rheem-Ruud reserves the right to make changes without notice.

Rheem Water Heating • 101 Bell Road, Montgomery, Alabama 36117-4305 • www.rheem.com
Rheem Canada Ltd./Ltée,128 Barton Street West, Hamilton, Ontario L8N 3P3
P R I N T E D I N U. S . A

01/07 WP

F O R M N O. R R 1 0 2 C - 3 R e v. 9



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