Installing the Unit
An adhesive backed paper template is shipped with the unit and
is used to locate the sink strainer holes. Use the following
procedure to mount the unit to the sink or holding vessel.
BURN HAzARD: Drain water may reach temperatures in
excess of 200°F (93°C). Use appropriate plumbing materials
when installing drain.
Do not use extension pipes on the inlet and outlet
connections on water heater units. Poor performance or
unsafe conditions may occur.
Auto-Fill units must be installed with adequate backflow
protection and must conform with all federal, state, and
local codes.
NOTE: FR2 Hydro-Heaters should be installed with a
perforated water baffle (not supplied with unit) to
distribute the heated water properly. The baffle should
be 3/4” (19 mm) high with a divider wall between the
inlet and outlet. The baffle should also have 3/4”
(19 mm) holes around the periphery every 6” (152 mm).
NOTE: 3CS2 Hydro-Heaters should be mounted in the center
of a sink or holding vessel.
Top View of Holding Vessel
NOTE: The dotted lines in the image above indicate the position
of the unit under the sink or holding vessel.
1. Expose the adhesive back of the paper template and
position it on the bottom of the sink or holding vessel.
• The decal should be positioned exactly above where the
Hydro-Heater will be positioned below the sink or
holding vessel.
• Make sure the front edge of the decal is flush with the
front edge of the sink or holding vessel.
• FR2 Series Hydro-Heaters should be positioned with no
more than 3' (914 mm) on either side when mounted
under the sink or holding vessel.
CAUTION
3/4″ (19 mm)
Pilot Hole
2″ (51 mm)
Diameter Hole
Front edge should be flush to the
front of the sink or holding vessel.
3′
(914 mm)
MAX
3′
(914 mm)
MAX
3″ (76 mm)
Diameter
Offset
Holding Vessel
Drain
General
Hatco 3CS2 and FR2 Series Hydro-Heaters are shipped fully
assembled. Care should be taken when unpacking the shipping
carton to avoid damage to unit and components enclosed.
ELECTRIC SHOCK HAzARD:
• Units supplied without an electrical cord and plug
require a hardwired connection to on-site electrical
system. Connection must be properly grounded and of
correct voltage, size, and configuration for electrical
specifications of unit. Contact a qualified electrician to
determine and install proper electrical connection.
• For units with an electrical cord and plug, plug unit into
a properly grounded electrical receptacle of the correct
voltage, size, and plug configuration. If plug and
receptacle do not match, contact a qualified electrician
to determine and install proper voltage and size
electrical receptacle.
• Unit must be installed by qualified, trained installers.
Installation must conform to all local electrical and
plumbing codes. Installation by unqualified personnel
will void the unit warranty and may lead to electric
shock or burn, as well as damage to unit and/or its
surroundings. Check with local plumbing and electrical
inspectors for proper procedures and codes.
• Unit is not weatherproof. Locate the unit indoors where
the ambient air temperature is a minimum of 70°F
(21°C).
FIRE HAzARD: Install unit with a minimum of 3-1/2″
(89 mm) of space from bottom of unit to all combustible
surfaces to prevent combustion.
1. Remove the unit from the box.
NOTE: To prevent delay in obtaining warranty coverage,
complete online warranty registration. See the
IMPORTANT OWNER INFORMATION
section for
details.
2. Remove tape and protective packaging from all surfaces
of unit.
Sizing Information
Hatco recommends the following guidelines be used to ensure
proper operation and sanitation.
For 3CS2 Series in a Sink Heater Application
• Minimum of 2000 watts per square foot (2.2 watts per sq.
cm) of vessel top.
• 3CS2 units are sized based on 140°F (60°C) supply water
with a 30-minute preheat period to reach the sanitizing
temperature.
For FR2 Series in a Bain-Marie or Steam Table
Application
• Minimum 750 watts per square foot (0.8 watts per sq. cm)
of vessel top.
For FR2 Series in a Food Rethermalizer Application
• Minimum 2000 watts per square foot (2.2 watts per sq. cm)
of vessel top.
NOTE: Use one 3CS2 or FR2 unit for a vessel up to 6' (1829 mm)
long. Units over 6' (1829 mm) require a minimum of two
units.
WARNING
Form No. HHM-0517
8
INSTALLATION
