Hubbell G250P, Installation & Operation Manual

Page: 34 / 67

34
9. Locate DIP Switch 2 on the
fi rst
and
last
units
and
put
the switch in the
ON
position (up). On the
middle
unit(s), position the switch in the OFF position (down).
10. Connect the units using the supplied cable(s) and
cascading jack plugs. Connect one end of a cable
into either of two jack receptacles (arrows) located on
the circuit board.
11. Pass the cable through the bottom of the unit’s wire
grommet.
12. Secure the wire using a zip tie
to the wall
.
13. Connect the opposite end of the cable to one of the
jack connectors of the next water heater. Continue
connecting all the units together, as shown.
IH-61
Dip Switch 2 ON
Dip Switch 2 OFF
Dip Switch 2 ON
14. Replace the front covers.
15.
Reconnect the power
.
NOTE:
Each water heater is rated at 500 watts
(5 amps). When installing multiple units, the
electrical power supply must be sized accordingly.
Plug each water heater into a separate outlet.
Using a separate circuit for each unit allows one
circuit breaker to trip while the other units
continue to operate.
16.
Mode
Press and hold the
Mode
button until the dH
screen appears.
MULTIPLE UNITS
DIP Switch Locations on Control Board
SW 2
DIP Switch Settings
(Réglages des commutateurs DIP)
Cascade Termination OFF
(
Terminaison en cascade OFF)
Cascade Termination ON
(Terminaison en cascade ON)
(CASCADE
TERMINATION
SWITCH)
NOTE: SW2 Cascade termination switch)
needs to be in the ON (up) position only for the
first and last units in the set of cascaded units.
SW2 needs to be in the OFF (down) position
for all other units that are not first or last
Cable Routing: Do not bunch up or coil any
extra lengths of communication cable. Do not
zip tie to a high volage lines. These may cause
intereference in communication.