Submittal Sheet

1. Consist of two (2) concentric tanks. The inner
tank shall contain the domestic water and the
outer tank shall contain the heating system
water. This “Tank in Tank” design concept shall
allow the inner tank to be self-descaling.
2. The inner tank shall be 304L corrugated stain-
less steel material that is passivated to provide
additional resistance to corrosion.
3. The inner tank shall have a maximum working
pressure of 150 psi and shall be able to withstand
a hydrostatic test pressure of 300 psi.
4. The outer tank shall be of carbon steel material
and have a maximum working pressure of 45 psi.
5. The water heater shall provide a cold water inlet
connection, hot water outlet connection and an
AUX connection that is to be utilized for the
Temperature / Pressure relief valve or a recircu-
lation return connection.
6. The outer tank shall be covered with a minimum 2
inches of CFC/HCFC-free rigid polyurethane foam
insulation with an equivalent “R” value of 16.
7. The water heater shall be covered by a single
piece polypropylene exterior jacket that resists
dents, cuts and abrasions.
B. Temperature Control
1. A drywell shall be inserted into and extend the
full length of the inner tank.
2. Within the drywell shall be a remote sensing
bulb attached to a low voltage thermostat that
senses the water temperature in the tank.
SMART Series
Indirect Fired
Water Heater
Suggested Specifications
SMART Series
General Requirements
A. Furnish and install _____ (qty) Indirect Fired Water
Heater designed for the production of domestic hot
water using boiler water as a heating source.
B. Installation of the Indirect Fired Water(s) shall be
according to manufacturer’s installation instructions
and all work shall be completed in a neat and work-
manship like manner.
C. The Indirect Fired Water Heater shall be a Triangle
Tube SMART _______ having a minimum continu-
ous (recovery) of _____ GPH at a 90°F domestic
temperature rise at boiler output listed in the perfor-
mance table on page 3 and a minimum actual stor-
age capacity of not less than _______ gallons per
water heater.
D. The water heater shall have a minimum of _______
square feet of heat transfer surface area.
E. The water heater shall be designed for a maximum
boiler side pressure drop through the outer tank of
3ft of pressure loss or less at volume flow rate of 28
gpm.
F. The water heater shall have a standby loss less than
1°F per hour.
G. The water heater shall have a maximum allowable
system heating water temperature of 210°F.
H. The water heater shall comply to the construction
standards of UL 174 and be certified by ITS/ETL or
other third party agency.
Product Specifications
A. Water Heater Construction
1