Prior to installation, select a location to install the Temperature Sensor. The sensor is de-
signed to be strapped directly to a metal surface, such as copper piping or shutoff valve (see
right), with the supplied adhesive strip and cable tie.
DO NOT install the Temperature Sensor to plastic, PVC, PEX or CPVC piping; heat does not
transfer well through these types of pipes which may cause the sensor to not function
properly.
The Temperature Sensor provides a wireless transmission of data to Rinnai’s Control-R™
Module. The Control-R™ Module must be installed and functioning properly before
installing the Temperature Sensor.
IMPORTANT:
Read the
Installation Requirements
section above prior to installing the Temperature Sensor.
You Will Need:
Temperature Sensor
Control-R™ Module
Phillips screwdriver (customer-supplied)
Control-R™ Temperature Sensor Installation Instructions
Instructions
Installation Requirements
This document provides instructions on installing the Rinnai Control-R™ Temperature Sensor.
The Control-R™ Temperature Sensor works with the Control-R™ Module to operate the Rinnai Tankless Water
Heater recirculation system. The recirculation system will deactivate after five minutes from initiation or when the
water has reached the set temperature. The Temperature Sensor is only compatible with Rinnai Tankless Water
Heaters featuring Rinnai Circ-Logic™. Follow all instructions carefully to ensure proper performance.
Part #
RWMTS01
Package Contents
Temperature Sensor Transmitter
with Sensor Wire Harness and
Screws
Battery*
Adhesive Strip and Plastic Cable Tie
(pre-assembled)
*
The Temperature Sensor uses a 3.7V
2600mAh Lithium-Thionyl Chloride Battery
(not rechargeable). Battery life is up to 5
years, depending on transmission intervals.
1. Rotate the Temperature Sensor transmitter front cover and install the battery.
(keep the front cover open and proceed to the next step)
NOTE: If the recirculating pump has recently been active and the recirculation loop is still warm, there may be a delay in pump
activation. To minimize any delay in pump activation, set the Rinnai Tankless Water Heater to Comfort Mode. Refer to the
“Recirculation Mode” section in the Tankless Water Heater Installation and Operation Manual for more information on Comfort
Mode.
