Hatco FR2 Series - Manual (Page 7)

INSTALLATION
5 Form No. FR2M-0604
PLUMBING
An adhesive backed paper template is shipped
with the unit and is used to locate the sink strainer
holes. Use the following procedure to install
the heater unit to the holding vessel.
NOTE: The FR2 heater should be positioned
with no more than 3' (914 mm) on either side
when mounted under holding vessel. See Figure 4.
A perforated water baffle (not supplied with unit)
must be used to distribute the heated
water properly.
NOTE: Use one FR2 for a Hot Food Table
up to 6' (1829 mm) long. Over 6' (1829 mm)
minimum 2 units required.
CAUTION
Do not use extension pipes on the inlet
and outlet connections on heater units. Poor
performance or unsafe conditions may occur.
1. Expose the adhesive back of the paper
template and stick the template on the bottom
of the holding vessel. Center the template
with the words “Front Cover” positioned against
the front inside wall of the vessel.
2. Center punch and drill a 3/4" (19 mm)
pilot hole at each of the two center marks
on the template.
3. Remove the template and cut a 2" (51 mm)
diameter hole at each pilot hole location using
a standard #ATV1756 Greenlee cutter.
NOTE: If a #ATV1756 Greenlee cutter is not
available, use a standard Greenlee 1-1/2" conduit
cutter #500-6978, which is slightly under 2"
(51 mm) diameter. File or ream holes as necessary
to 2" (51 mm) diameter required for mounting
sink strainers.
4. See Figure 5. In each of the holes, install
a male threaded sink strainer with a thin gasket
between the strainer flange and the bottom
of the holding vessel.
5. Install two thick gaskets at the underside
of the holding vessel along with a thin fiber
gasket, and secure finger tight with the nut.
6. Attach the heater to the strainers loosely
with the union nuts and 1-3/4" (45 mm)
rubber gaskets.
NOTE: Make sure rubber gaskets are positioned
inside the union nuts and are not crimped.
3" (76 mm)
Thin rubber washer
Thick rubber
washers
(Qty. 2)
Thin fiber
washer
1/8" (3 mm)
offset
Sink or tank
Nut
Union nut
Union Gasket
Figure 5. Installing Sink Strainer
7. Tighten nuts on strainers securely.
8. Tighten union nuts securely.
9. Fill the holding vessel with water and check
for leaks.
CAUTION
Do not overtighten unions or nuts.
Overtightening may cause leaks.
NOTE: A 3/4" (19 mm) hose or pipe may be connected
to the heater sump drain and run to an open sight drain.
The sump drain should not be permanently connected
to the sanitary drain system. Check local plumbing
code for proper drain installation. See
MAINTENANCE for more information.
Figure 4. Hydro-Heater Water Baffle
3' 3'
3/4" (19 mm) holes
around periphery on
6" (152 mm) centers
Dotted line
indicates the position of
perforated water baffle 3/4" (19 mm) high baffle
with divider wall between
inlet and outlet
( 914 mm )
MAX
( 914 mm )
MAX