Rinnai Circ-Logic RU98i User Manual

9 Rinnai Circ-Logic™ with Grundfos Kit
Figure 5: Electrical Diagram
Wiring Table
Description GTK15 (Timer) Supplied Line
Cord
+115VAC Brown (Br) Black (Bk)
Neutral Gray (Gy) White (W)
Ground Green (Gn) Green (Gn)
GTK15 (Pump) Rinnai
Circ-Logic™
+115VAC
(Circ-Logic™)
Red (R) Black (Bk)
Neutral
(Circ-Logic™)
Blue (Bl) White (W)
Figure 4: Bottom of water heater
CONDUIT
TO GTK15
POWER
CORDS FOR
WATER
HEATER AND
GTK15
CABLE ACCESS HOLES
FRONT OF WATER HEATER
9. Connect power to the water heater and the GTK15
line cord.
10. Set the mer switch to the actual me by turning
the programming ring in the direcon of the arrow
unl the ming arrow points to the actual me on
the ring.
11. Set the manual switch to “ON”.
12. Press the Power buon on the controller. The
pump and water heater will turn on to raise the
recirculaon loop temperature.
13. Refer to the Timer Operaon secon for addional
informaon on programming the mers.
The Grundfos GTK15 Pump has two power sources.
Disconnect all supply connecons before servicing.
One is directly from the electrical outlet for the mer
and the other is through the water heater for the
pump.
WARNING
RISK OF ELECTRIC SHOCK

Rinnai Circ-Logic RU98i Specifications

General

Category	Tankless Water Heater
Model	RU98i
Gas Type	Natural Gas or Propane
Energy Factor	0.95
Maximum Flow Rate	9.8 GPM
Minimum Flow Rate	0.26 GPM
Activation Flow Rate	0.4 GPM
Circ-Logic	Yes
Heat Exchanger	Stainless Steel
Maximum BTU Input	199, 000 BTU
Minimum BTU Input	15, 000 BTU/h
Temperature Range	98°F - 185°F
Vent Length	Up to 65 feet
Electrical Requirements	120V AC
Ignition System	Electronic
Warranty	12-year on heat exchanger, 5-year on parts, 1-year on labor