Installation Guide

78 Rinnai Tankless Water Heater Installation and Operation Manual
1 2
Built-in Pump Setting
•
Non-pump models should always have
1 2 A
without pump setting. Pump models have
1 2 b
with pump setting as default.
1 6
Pump Speed
•
Higher pump speeds during recirculation runs will produce higher noise levels. If the noise
level of the recirculation pump is high, changing parameter setting to
1 6 b , 16C
or
1 6 d
may reduce the noise level of the pump. This, however, will increase the duration of the
recirculation run.
1 7
First Day Pump Operation
•
For the first 24-hours of operation, Smart-Circ will learn hot water usage patterns and
operate the pump based on the learned patterns. On the first day, when the tankless water
heater has no learned patterns, the unit can be set to no pump operation (Pump Off/No
Recirc) for the first 24 hours per Smart-Circ or to the pump operating (Pump On/Recirc)
multiple times per hour depending on parameter setting
05
.
1 8
Smart-Circ with BLE Push Button
•
Default setting is
18A
. With
18A
, Smart-Circ is disabled when a BLE push button is
installed. With
18b
, Smart-Circ and a BLE push button work together.
•
Up to five BLE push buttons can be installed. Refer to section “7.7 Bluetooth Low Energy
(BLE) and App Instructions” on how to install the BLE push button.
NOTICE: California Title 24 does not allow timer-based recirculation system. It requires
demand-based recirculation system. To comply with California Title 24, you should select 18A
setting, and install a BLE push button.
Setting #
Setting
Description
Selection
A b C d
12
Built-in Pump Setting
Without
Pump
With
Pump
16
Pump Speed Maximum High Medium Low
17
First Day Pump
Operation
Pump Off Pump On
18
Smart-Circ with BLE
Push Button
Smart-Circ is
disabled
Smart-Circ is
enabled
Parameter Settings
Refer to section “4.13 Configure Parameter Settings” for instructions on how to access and change
parameter settings.
Table 32