Rheem Gas Hot Water Supply Heaters User Manual

Gas Hot Water Supply Heaters

Available in Indoor and Outdoor Models

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136,000 thru 1,826,000 BTU/Hr.

Rheem-Ruud hot water supply heaters are designed to pro­vide hot water service to a variety of commercial applications
when used in conjunction with an appropriately sized storage
tank. These models are particularly suited for applications that
require high inputs and large volumes of stored hot water.

Construction Features:

• Reliable heat exchanger
Design – The all copper

heat exchanger is a single
bank, straight-through
design with a floating
return header immune to
thermal shock.

• Energy saving pump
control – The energy

saving pump control is an
electric device that allows
the operator to set the
desired time for the pump
to run after the water
heater shuts off. With the
energy saving pump con­trol the water heater pump
is programmed to contin­ue running for an optimum
period of time in order to
absorb the residual heat
from the combustion
chamber and use it in the
system.

• Compact design –
The low water heater
mass design offers
substantial savings in
weight and cube over
most cast iron, steel tube
and storage-type water
heaters making it ideal
for rooftop installations
and in tight quarters.

• Minimal heat loss design

– Spark-to-pilot (IID)
system is standard on
all models.

• Glasslined cast iron
headers –

To handle aggressive
water conditions. (Models
GBBP/GBB136 feature
bronze headers.)

Certifications and Ratings:

•

Efficiency – These models have been tested according to ANSI

test procedures, and meet or exceed the 80% thermal efficiency
requirement of current ASHRAE standards (Part of the Federally
mandated Energy Policy Act (EPact)). Also exceeds energy
efficiency codes of all states.

•

Safety and Construction – These products are design certified

by the CSA: a) As a Hot Water Supply Water Heater equipped
with on/off controls for use in conjunction with a storage tank. b)
For operation at 180°F. c) To meet all safety and construction
requirements of ANSI Z21.10.3.c) For installation on combustible
flooring when used with a combustible floor base, and, or e) for
alcove installation. ASME construction is standard on all models.

Certified for a 160 PSI Maximum Working Pressure.

Continued next page.

Indoor and Outdoor

Models

Pump Mounted Models

Available

5 Year Limited Warranty

Indoor Models

Reliability

• Like all of our water heating products,
Rheem-Ruud hot water supply
heaters are crafted to exacting stan­dards. Each detail of design, engi­neering and construction must meet
our criteria for performance and dura­bility.

• The heat exchanger (1), for example,
is constructed of 100% copper. High
Velocity hydraulics (2) virtually elimi­nates problems of scaling and corro­sion within its waterways. The cast
iron headers (3) are glass-lined to
assure that the entire heat exchanger
assembly is resistant to corrosion.

• Every Rheem-Ruud hot water supply
heater features titanium stainless
steel burners (4). They operate quiet­ly, will not clog or corrode, and have
far greater temperature resistance
than cast iron. The controls (5) are
factory adjusted and completely
enclosed for reliable, automatic
operation.

• The outer jacket (6) is galvanized
and enamel baked for lasting
aesthetics.

Efficiency

• Today’s demands for volume hot water
must be met economically, so we’ve
attempted to use every fuel saving
technique conceivable. The resulting
82% efficiency will save you money in
fuel costs for years to come.

• The integral finned copper tubing
(7) in the heat exchanger provides
nine times more heat transfer area
than smooth tubing. Efficiency is
boosted even further by V-baffles (8),
which redirect the heat across the
finned tubing. The insulated combus-
tion chamber (9) features corner
sealed and interlocking refractory
panels to minimize chamber radiation
losses.

• Economy is further enhanced with a
special energy saving pump control.
This automatic control continues to
pump operation until all usable heat
has been absorbed from the combus­tion chamber and stored in the tank.

• Access to water heater for inspection
is simple. All Rheem-Ruud hot water
supply heaters feature a heat

exchanger inspection panel (10)

and a removable door to access the

slide out burner drawer (11).

Flexibility

• You’ll find that Rheem-Ruud hot
water supply heaters are perfectly
suited for many commercial, industri­al and special application needs
requiring economical, reliable sup­plies of hot water. The optional facto­ry supplied pump is designed to
handle nearly all water conditions

• Our standard sized water heaters –
nine models ranging from 136,000 to
825,000 BTU – are designed for hot
water supply in commercial applica­tions. Each model is available for
indoor and outdoor installation. The
outdoor models feature a special
draft system which is wind, rain and
debris-proof.

• Our large sized water heaters –
seven indoor and seven outdoor
models ranging from 926,000 to
1,825,600 BTU – meet the heavier
demand of larger multi-family hous­ing and commercial applications.
They are ideal for use as summer
replacement water heaters, eliminat­ing the need to fire large central
heating water heaters merely to sup­ply domestic hot water.

• All of these Rheem-Ruud hot water
supply heaters are compact and
convenient; they save space, fuel
and installation cost.

1

100% copper
heat exchanger

10

heat exchanger
inspection panel

6

galvanized and
baked enamel jacket

3

cast-iron glass­lined headers,
easily removable

8

high efficiency
“V” baffles

7

integral
finned
copper
tubing

5

totally
enclosed
automatic
controls

11

removable door
for access to
slide out
burner drawer

4

precision titanium
stainless steel
burners

2

high velocity
hydraulics

9

corner sealed
and interlocked
combustion
chamber

Three Important Reasons to Choose Hot Water Supply Heaters
from Rheem-Ruud Commercial Water Heaters