Model Transflow - Hubbell Electric Heater Co.

30 - 120 GALLON CAPACITIES
FEATURES
■ Heavy Duty Construction
— Hydrastone cement lining
provides long tank life
— Copper-silicon tappings cannot
rust or corrode
— High impact composite jacket
cannot rust or corrode and
eliminates damage during transit
and installation
■ High Efficiency
— 2" thick polyurethane foam
insulation reduces heat loss
— Built-in heat trap lowers operating
costs
■ Advanced Heating Coil
— Heating coil can be easily
removed for simple maintenance
— Heavy gauge copper fin tube coil
provides maximum heat transfer
APPLICATIONS
■ Residential
■ Industrial Facilities
■ Office Buildings
■ Schools
The Hubbell TransFlow Water
heater uses Boiler Water as the
source for heating potable water.
TransFlow Model
UTILIZE EXISTING BOILER WATER SUPPLY
TO MAKE HOT WATER
The Hubbell T Model water heater utilizes an
existing supply of boiler water to heat domestic
potable water. The Transflow model storage tank
is fitted with a specially designed, high efficiency
heating coil which transfers heat from the boiler
water to the domestic water in the tank. It's advanced
design has no moving parts and does not
TransFlow Model
require any electrical connections, while the high
quality materials used in construction of its tank and
heating coil ensures long service life. When you
specify and install a Hubbell Transflow water heater,
you will have confidence in knowing that the owner
will be provided with a quality product that is a
trouble-free and long lasting source for hot water.
A HIGHLY EFFICIENT AND LONG LASTING WATER HEATER

2
OUTLINE DIMENSIONS
Hot Water Outlet
Protective Jacket
Tank Cross
Section
1/2"
Steel
Pressure
Vessel
Combination Cold
Water Inlet & Drain
18"
Withdrawal
Space
Side View
45 o
T&P Relief Valve
2" Foam Insulation
Immersion Thermostat
Controller
Boiler Water Inlet
Heating Coil
Boiler Water Outlet
45 o
10 o
Top View
Front View
A
T&P Relief Valve
Hot Water Outlet
Combination Cold
Water Inlet & Drain
Thermostat
Heating Dimensions (Inches) Inlet /
Base Storage Coil First Hour Outlet Shipping
Model Capacity Size Rating * Overall Overall Inlet Coil Thermostat T&P Valve Size Weight
(Gallons) (Sq Ft) (Gallons) Diameter Height “A” “B” “C” “D” (Inches) (lbs.)
T30-15 30 15 128 20 40.5 7 10 13 34 3/4 180
T40-15 40 15 139 20 58.75 7 10 13 51 3 /4 230
T65-20 65 20 165 26 48 8 10 14 40 3 /4 310
T80-20 80 20 182 26 58 8 10 14 51 3 /4 340
T120-20 120 20 188 28 69.25 8 11 17 62 3/4 420
T120-40 120 (2) 20 306 28 69.25 8 11 17 62 1 1 /2 435
TU40-20 40 20 152 26 33 7 8 14 24 3 /4 235
* First hour ratings based on a 80 o F rise (40-120 o F) when supplied with 6 GPM of 200 o F boiler water.
STANDARD EQUIPMENT
■ 1/2" thick Hydrastone cement lined steel tank
■ All copper-silicon non-ferrous tank openings
■ Built-in copper heat trap to improve operating
efficiency and prevent heat migration
■ Removable design heating coil
■ High efficiency copper fin tube heating coil
■ Immersion adjustable thermostat to regulate the
flow of boiler water through the heating coil
■ ASME rated temperature and pressure relief valve
set at 150psi, 210 o F, 200,000 BTU max
■ 2" thick polyurethane foam insulation
■ High impact colorized composite protective jacket
OPTIONAL EQUIPMENT
1. 1 1/2" male NPT inlet / outlet water connections
2. Double wall copper heating coil with a leak
detection port. (Available in 20 Sq. / Ft. coils only)
3. Integrally welded seismic attachment points
4. Electric back-up heating element in various
wattages and voltages (consult factory)
1"
B
C
D

TRANSFLOW MODEL
TYPICAL INSTALLATION
Hot Water
Outlet
T&P Relief
Valve
Immersion
Thermostat
Removable
Heating Coil
Cold Water
Inlet And
Drain
Tank: Hydrastone cement Lined
Steel
Capacities: 30 thru 120 Gallons
Orientation: Vertical
Inlet Size:
3/4" Female NPT
Outlet Size: 3/4" Male NPT
Drain Size:
3/4" Hose Connection
Relief Valve Size: 3/4" Female NPT
Tank Rating: 150 psi WP, 300 psi TP
Coil Type: Removable
Coil Material: Copper Fin Tube
Coil Rating: 150 psi WP, 300 psi TP
Boiler Water
To Coil
Boiler Water
Out Of Coil
MODEL NUMBER DESIGNATION
■ Step 1
Base
Base
Model:
Model:
T or TU
TU
Boiler Water
Supply
TRANSFLOW MODEL
WATER HEATER SPECIFICATIONS
Boiler
Shut-off Valve
Check Valve
Union
Boiler Controls
Circulator
Drain
Pipes
Boiler Water
Return
Coil Surface Area: 15, 20 Square Feet
Coil Tube Size: 5/8" ID, 7/8" OD
Coil Connections 3/4" Male NPT
Max. Input: 199,900 BTU/Hour
Thermostat:
Warranty
120 Volt S.P.S.T.
Tank: Full Seven (7) Years
Coil: Full Seven (7) Years
Jacket: High Impact Colorized
Composite
Color: Brown and Tan
■ Step 2
Storage
Storage
Capacity:
Capacity:
30-120 Gallons
—
■ Step 3
Coil Coil Size: Size:
Size:
15, 20, 40
■ Step 4
Style:
Style:
S = Single Wall
D = Double Wall
3

4
JOB NAME
REPRESENTATIVE
MASTER SPECIFICATIONS: TRANSFLOW MODEL
ENGINEER
CONTRACTOR
GENERAL
Provide a quantity of Transflow water heater(s) Model No.
as manufactured by HUBBELL Electric Heater Co., Stratford, CT. The entire unit is to be complete with all
operating controls and requires only plumbing and electrical service connections. The tank shall be all
welded steel commercial construction designed for 150psi working pressure and contain gallons
of storage. The tank shall be lined with seamless Hydrastone cement to a minimum thickness of 1 /2" on
100% of all interior tank surfaces and does not require any type of anodic protection. The tank shall be
designed and fabricated with non-ferrous copper-silicon threaded tappings and non-ferrous inlet and
outlet piping for maximum corrosion resistance. Steel tank tappings will not be acceptable. The entire tank
is to be insulated with a minimum of 2" thick polyurethane foam insulation and exceed the latest ASHRAE
standard for stand-by heat loss. The complete heater shall be supplied with a high impact colorized
composite protective jacket which cannot rust or corrode and does not require painting. The unit shall
bear the UL listing mark certifying the entire water heater.
The cold water inlet shall be 3 /4" Female NPT ( Optional Specification: 1 1 /2" Male NPT ) and include a
non-corrosive strata-flow diffuser which prevents incoming cold water from mixing too rapidly with hot
water in the tank. A 3 /4" hose connection drain is supplied. The hot water outlet shall be 3 /4" Male NPT
( Optional Specification: 1 1 /2" Male NPT ) and shall include a factory installed built-in heat trap to
prevent hot water from radiating through the piping during stand-by periods. A separate 3 /4" Female NPT
tapping is to be provided for relief valve installation. An ASME rated automatic reseating combination
temperature and pressure safety relief valve set at 150psi and 210 o F shall be factory supplied.
HEATING COIL
The tank shall be fitted with a heating coil which transfers heat from the boiler water to the domestic
water. Boiler water shall be in the tubes, and domestic water in the tank. The heating coil shall be of
single wall ( Optional Specification: double wall ) copper construction for maximum heat transfer
efficiency and coil longevity. The coil shall have (Specify 15, 20, 40) square feet of heating
surface and shall be fully removable from the tank to allow for periodic inspection and maintenance
without the need to move or lift the storage tank from its installed position. The heating coil shall have
3 /4" Male NPT threaded connections.
THERMOSTAT
The tank shall be fitted with an immersion 110-170 o F adjustable temperature controller to control the flow
of boiler water through the heating coil. The S.P.S.T. 120 volt, 1 phase thermostat opens or closes the
control circuit to the circulation pump or zone valve (by others) in order to regulate the flow of boiler water
through the coil and thereby maintain the desired water temperature in the tank.
WARRANTY
The water heater manufacturer shall warranty all components against defects in workmanship and
material for a period of one (1) year from date of start-up, and the pressure vessel including the heating
coil for a full seven (7) years Non Pro-Rated from date of start-up, provided that the unit is started within
three (3) months of date of shipment and installed and operated within the scope of the tank design and
operating capability. Each water heater shall be shipped with a complete set of installation and operating
instructions including spare parts list and approved drawings.
The Electric Heater Company ■ P.O. Box 288 ■ Stratford, CT 06615-0288 ■ Phone: (203) 378-2659 ■ FAX: (203) 378-3593
E-mail: info@hubbellheaters.com ■ Internet: http://www.hubbellheaters.com