62
Rinnai Tankless Water Heater Installation and Operation Manual
SETTING #
SETTING
DESCRIPTION
SELECTION
a
c
01
Maximum Set
Temperature
120°F
140°F
02
High Altitude
Installation Location
0 - 2,000 ft
(0 - 610 m)
2,001 - 5,400 ft
(610 - 1,646 m)
5,401 - 7,700 ft
(1,646 - 2,347 m)
7,701 - 10,200 ft
(2,347 - 3,109 m)
03
Service Soon
1
Disabled
0.5 Year
1 Year
2 Years
04
Recirculation Settings
No
Recirculation
Recirculation
(Dedicated)
Recirculation
(Crossover)
05
Recirculation Mode
2
Economy
Comfort
Commercial
5
07
Units in Standby
(EZConnect™)
2
1
10
Gas Type
(Factory Set)
NG
LPG
11
Maximum Flow Rate
4
Standard
High
12
Water Heater Model
(Factory set values and
not adjustable)
Without Pump With Pump(RUR) With Pump(RSC)
13
199 (3237)
180 (2934)
160 (2530)
130 (2024)
14
Internal
(Indoor)
External
(Outdoor)
15
6
Low Activation Mode
On
Off
16
Pump Speed
Max
Low
17*
First Day Pump
Operation
Pump Off
Pump On
Table 30: Parameter Settings
Default is
A
for all settings below except
10
,
12
,
13
, and
14
which are factory set.
1
See section “4.12.2 Service Indicator (Service Soon,
55
)” for more information.
2
Setting
05
is available only if setting
04
is selected.
Economy mode
cycles the pump less often, using less energy to maintain the circulation loop temperature.
Comfort mode
cycles the pump more frequently, ensuring the loop temperature remains higher (but also uses more energy).
3
BMS = Building Management System
4
Selecting “High” will increase the water flow rate to the maximum capacity.
5
Commercial mode should not be used for residential applications. Application of commercial mode may result in excessive machine
wear and energy consumption.
6
Low Activation Mode must be in the ON position (
15a
) if crossover recirculation is selected (Parameter
04C
).
*For the first 24-hours of operation, Smart-Circ will learn hot water usage patterns and operate 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 or to the pump operating (Pump On/Recirc) every 15 to 30 minutes for the first 24 hours.
4.12.2 Service Indicator (Service Soon,
SS
)
5 TIMES
55
This water heater includes a service indicator (Service Soon,
SS
). When selected in the parameter settings, an
SS
code will
display on the controller indicating that it is time to flush and
service the water heater.
•
Selection is installers preference based on water
conditions or other factors that may influence the
suggested interval of service.
•
See the “Parameter Settings” section of this manual
for selectable service intervals.
•
If Service Soon (
SS
) appears on the controller dis
-
play, contact your local service provider to flush and
service the water heater (see 6.3 Flushing the Heat
Exchanger)
•
Service Soon will appear again based on the select
-
ed service interval.
To reset Service Soon (
55
)
Press the ON/OFF button 5 times
NOTE: Service Soon (
55
) will display
on the controller again when the water
heater reaches the interval selected in the
parameter settings.
Figure 66
