Hatco FR2 Series - Manual (Page 8)

INSTALLATION
6 Form No. FR2M-0604
CAUTION
Water Quality Requirements - Incoming water
in excess of 3.0 grains of hardness per gallon
(GPG) (.75 grains of hardness per liter) must
be treated or softened before being supplied
to a Hydro-Heater. Water containing over
3.0 GPG(.75 GPL) will decrease the efficiency
and reduce the operating life of the unit.
AUTO-FILL
Units with the Auto-fill option require the following
steps be completed before start-up.
WARNING
For proper plumbing installation conforming
to local plumbing codes consult a licensed
plumbing contractor.
1. Supply 1/4" NPT copper water supply line
to inlet of solenoid valve on heater.
NOTE: Ball valve or gate valve, line strainer,
union(s) and vacuum breaker or other anti-siphon
device must be supplied by table manufacturer
or installer if required.
2. Locate a point on the sidewall of the water
vessel which is 1/2" (13 mm) up from
the bottom of the food pan(s).
3. Mark and drill a 1/2" (13 mm) hole into the side
wall of the tank.
4. Deburr the hole. Burrs may crack or damage
the probe when tightened.
5. Position upper water sensor into tank with
o-ring against inside wall.
6. Place washer onto threads of probe on outside
wall of tank.
7. Secure all with nylon nut, making sure flat side
of nut is towards washer.
8. Tighten until snug. Be careful not to overtighten
nut. Overtightening may cause leaks and/or
crack the probe.
9. Turn on water and check for leaks.
10.Connect wire lead to probe.