Rheem Medium Duty Gas Water Heaters User Manual

Medium Duty Gas Commercial Water Heaters

Available in 60, 75 and 100 Gallon Tank-Type Model



50,000 BTU/Hr. thru 80,000 BTU/Hr.

Rheem-Ruud gas commercial water heaters are specifically designed to
fill the need wherever medium quantities of hot water are required. Typical
applications include small restaurants, apartments and small office buildings.

Construction Features:

Short

Floor-to-Vent

Heights

Small Jacket

Diameters

Greater

Installation

Flexibility

• Space saving design –

short heights and small jacket
diameters result in greater
installation flexibility.

• Long life tank design –
proprietary steel formulation with a
unique coat of high temperature
porcelain enamel to maximize
corrosion resistance resulting in a
superior tank design. Dual
magnesium anode rods are
installed for longer tank life.

• Foam insulation –
rigid foam insulation provides
superior insulating qualities,
improves efficiency and reduces
operating costs. Our patented
process of injecting foam into the
insulating cavity adds additional
durability and dent resistance to
the heater jacket.

• Automatic controls –
control system is designed to
shut off gas if the pilot flame is
extinguished. Relighting is a safe,
easy procedure. Thermostat
settings to 160°F. A built-in gas
pressure regulator assures even
gas flow.

• Temperature and pressure
relief valve –

AGA/ASME rated and factory
installed.

• Full port, full flow brass
drain valve

Certifications and Ratings:

• Efficiency – these models have been tested according to DOE test

procedures, and meet or exceed the thermal efficiency and standby
loss requirements of current ASHRAE standards (Part of the Federally
mandated Energy Policy Act (EPact)). Also exceeds energy efficiency
codes of all states including California Energy Commission (CEC).

• Safety and construction – these products are design certified by
CSA Laboratories: a) For operation at 160°F. b) To meet all safety
and construction requirements of ANSI Z21.10.1/ANSI Z21.10.3.
c) As an automatic storage water heater. d) For operation of combustible
floors and alcove installations. e) For combination water heating and space
heating applications. All models are North Carolina and Massachusetts
Code compliant. Certified for a 150 PSI Maximum Working Pressure.

Continued on reverse.

A

B

HOT & COLD

T & P

C

F

E

D

2"

3/4"

G

1/2" GAS
CONNECTION

Medium Duty Gas continued.

E

G

BA

C

F

D

1/2"

3/4" N.P.T.

RELIEF

VALVE

OPENING

SIDE TAPS
(75 GAL.
MODEL
ONLY)

RECOVERY CAPACITIES Recovery in U.S. Gallons/Hr. (GPH) at various temperature rises

MODEL NUMBER INPUT (BTU/HR.) 40°F 50°F 60°F 70°F 80°F 90°F 100°F 110°F 120°F 130°F

G60-50N 50,000 115 92 77 66 58 51 46 42 38 35
G60-50LP 45,000 104 83 69 59 52 46 41 38 35 32
G75-75N-2 75,100 182 146 121 104 91 91 73 66 61 56
G75-75LP 65,000 158 126 105 90 79 70 63 57 53 48
G100-80 80,000 194 155 129 111 97 86 78 71 65 60
G100-80N 76,000 184 147 123 105 92 82 74 67 61 57

ecovery rating is based on recovery efficiencies obtained in a CSA certified laboratory. N = Low NOx

R

MAXIMUM DELIVERY Delivery in U.S. Gallons. (Includes useable storage and recovery for indicated times)

MODEL GALLON INPUT TEMP. 5 10 15 20 30 45 60 120 180 Min. to Rec.
NUMBER CAPACITY (BTU/HR.) RISE UNITS Min. Min. Min. Min. Min. Min. Min. Min. Min. Contents

G60-50N 60 50,000 100 °F GAL 46 50 54 57 65 77 88 134 180 78
G60-50LP 60 45,000 100 °F GAL 45 49 52 56 63 73 84 125 166 87
G75-75N-2 75 75,100 100 °F GAL 59 65 71 77 89 107 125 198 271 62
G75-75LP 75 65,000 100 °F GAL 57 63 68 74 84 100 116 179 242 71
G100-80 100 80,000 100 °F GAL 77 83 89 96 109 128 148 225 303 77
G100-80N 100 76,000 100 °F GAL 76 82 88 95 107 125 144 217 291 81

DIMENSIONAL INFORMATION

CLEARANCE TO APPROX.

MODEL

NUMBER UNITS ABCDEF GSIDE FRONT TOP

G60-50 inches 62 58 23 13-1/4 4848-1/2 132 180 lbs
G75-75 inches 64 60 26-1/4 13-1/4 4 11 53-1/4 132 320 lbs.
G100-80 inches 69-5/8 65-3/4 28-1/4 11 4 15 57-13/16 1Alcove 12 410 lbs.

COMBUSTIBLES

SHIPPING

WEIGHT

Recommended Specifications:

Water heater(s) shall be model ______________,
manufactured by RHEEM-RUUD, having gas
input of __________ Btu/hr. and a recovery rate
of _______ GPH at a 100°F temperature rise.
Water heater(s) shall have a storage capacity of
_________ gallons. Water heater(s) shall have
the AGA seal of certification and be factory
equipped with an AGA/ASME rated temperature
and pressure relief valve. Tank(s) shall have a
coating of high temperature porcelain enamel and
furnished with a magnesium anode rod rigidly
supported and a full port, full flow brass drain
valve. Water heater(s) shall meet or exceed the
energy factor requirements of ASHRAE. Tanks
shall have a working pressure rating of 150 psi,
and shall be completely factory assembled,
including a pressure regulator properly adjusted
for operation on ___________ gas. Controls will
be arranged for safety shutoff in event of pilot
failure. Complete unit shall be insulated with rigid
polyurethane foam insulation. Water heater(s)
shall be covered by a three year limited warranty
against tank leaks.

Limited Warranty:

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

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

P R INT E D I N U. S. A 1 1 /07 WP F O RM N O . R R 102 C - 2 M Rev . 3

G60-50 & G75-75

SIDE TAPS ON 75 GAL.

MODEL ONLY

G60-50 WATER CONNECTIONS

ARE 3/4" NPT

G75-75 WATER CONNECTIONS

ARE 1" NPT

G100-80

WATER CONNECTIONS

ARE 1" NPT