48
Connecting the Remote Controller Cord
1. Check to make sure that the Remote Controller
Cord has plenty of slack in order to reach the
external connection terminal block.
2. Make sure the electrical power is disconnected
from the Water Heater.
3. Open the external remote terminal block.
5. Reattach the terminal block cover.
NOTE
Tie the redundant cord outside the
Water Heater. Do not put the extra
length inside the Water Heater.
2) Pull downward
1) Pinch
10.3 Recirculation Pump
NOTE
This feature is not available when
using the Quick Connect Multi-System
feature.
Connecting the pump control wire
[When using Noritz Recirculation System (RPK-
EXT)]
1. Check the electrical power is disconnected from
the Water Heater.
2. Remove the front cover (4 screws).
3. The pump comes pre-assembled with a
wiring harness to be easily connected into the
Water Heater. Feed wiring through the wiring
throughway located at the bottom of the Water
Heater.
4. Locate Connector marked “PUMP” and insert
pump power connector.
Pump Power Cord
Ground Wire
Wiring
Throughway
Pump Control
Wire tag
Clamp
PUMP
Connector
Circuit Board
PUMP
Circuit Board
Pump Control
Wire Tag
Crimping
Terminal
Wiring
Throughway
Supplies Power for
Recirculation Pump
(Use a relay for larger pumps)
Ground Wire
NOTE
A dummy plug is inserted from the
factory. This connector must be
removed before connecting the pump
power connector. Press lightly on the
connector to release the dummy plug.
5. Connect the ground wire (green color wire) to
the screw at the base of the Water Heater.
6. Reattach the front cover (4 screws).
4. Pass the Remote Controller Cord through the
wiring throughway.
Connect the Y-shaped terminals at the end of
the Remote Controller Cord to the terminal
block.
Wiring Throughway
mote Controller Cord
NOTE
Leave enough slack so that the pump
control wires will stay connected if
the Water Heater is removed from
the wall.
[When not using Noritz Recirculation System (RPK-
EXT)]
1. Check the electrical power is disconnected from
the Water Heater.
2. Remove the front cover (4 screws).
3. Cut off the connector at the end of the pump
control wires.
4. Only when using a pump of 100 W or less,
pass the pump power cord through the wiring
throughway and connect with the pump control
wires.
This will be the power supply for the pump.
If a large pump (greater than 100 W) is being
used, use the voltage from these wires as the
signal to close a normally open relay through
which 120 VAC will be supplied directly from a
wall circuit to the pump.
5. Connect the ground wire to the screw at the
base of the Water Heater.
6. Reattach the front cover (4 screws).
Connecting Electricity
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