Electrical-All Sizes And Voltages - Hatco Imperial Series Installation And Operating Manual

INSTALLATION
Electrical — All Sizes and voltages
General
Hatco Electric Booster Water Heaters are available for operation
on standard power systems. Check the specification label for
the proper power supply.
all internal electrical connections have been made at the
factory. See CIRCUIT BREaKER aND FUSE SIzING CHaRT
for supply wire size,
recommendations. Consult local codes for verification and
compliance.
WARNING
ELECTRIC SHOCK HAzARD:
• This unit must be installed by qualified, trained
installers. Installation must conform to all local
electrical and plumbing codes. Check with your local
plumbing and electrical
procedures and codes.
• Turn power OFF at disconnect switch/circuit breaker
and allow unit to cool before performing any
maintenance or cleaning.
• Consult a licensed electrical contractor for proper
electrical installation conforming to local electrical
codes and the National Electrical Code (N.E.C.).
NOTICE
Connect Hatco Electric Booster Water Heaters to the same
power supply as indicated on the specification decal only.
Units connected to an incorrect power supply voids the
product warranty and may damage the equipment.
Imperial Series
Electrical
Knockout
fuse, breaker, and conduit
inspectors for proper
Compact Series
Electrical
Knockouts
Figure 14. Electrical Knockout Locations
Electrical Connections
1. Remove the front jacket cover screws, pull the cover
forward and remove the cover.
NOTE: On Imperial models, there is a hinged access panel
under the front jacket cover. Remove the bottom screw
and lift the panel up to expose the fuse blocks.
• On mini-Compact models, remove front cover screws.
Ease cover forward and upward.
• On Compact models, the control box is under the front
hinged jacket cover.
2. Locate the heater terminal or fuse block(s) inside the unit.
NOTE: See "Circuit Breaker and Fused Disconnect Switch"
chart in the SPECIFICaTIONS section for proper
connections and wire size.
NOTE: Only 6, 7, and 9 kW models, in 208 or 240 volt, can be
converted to single or three phase in the field. Refer to
the wiring diagram for proper wiring connections at the
terminal block.
3. Bring power leads from a properly sized disconnect switch
or circuit breaker through the knockout provided on the
unit. Connect leads to the terminal or fuse block(s).
USE COPPER WIRE ONLy. TIGHTEN CONNECTIONS
PROPERLy TO A MINIMUM OF 40 INCH POUNDS.
NOTE: Due to the rigors of transportation all connections
should be checked for tightness before heater is put
into operation.
4. Properly connect an equipment grounding connector to the
grounding lug (located near the supply terminals).
DO NOT turn on power to the booster heater until tank has
been filled with water and all air has been vented through
the dishwasher rinse nozzle. The heating elements will
burn out in seconds if operated when they are not
immersed in water.
5. Replace and secure cover(s).
24
English
CAUTION
Mini-Compact Series
Electrical
Knockout
Form No. EBOOSTERm_CN-0911