Installation Sheet

56 Rinnai Tankless Water Heater Installaon and Operaon Manual
The water heater can deliver water at only one temperature seng at a me. The available temperatures are provided
below. A temperature lower than 98° F (37° C) can be obtained at the tap by mixing with cold water.
To change the temperature scale from Celsius to Fahrenheit or vice versa, press and hold the “On/O” buon on the
controller for 5 seconds while the water heater is OFF.
* These models have a default maximum temperature of 120° F (49° C) and an opon to increase the maximum temperature to 140 °F (60 °C).
Refer to secon “3.12 Parameter Sengs” for further details.
Temperature Sengs
Fahrenheit °F 98 100 102 104 106 108 110 115 120 125* 130* 135* 140* 150** 160** 185**
Celsius °C 37 38 39 40 41 42 43 46 49 52 54 57 60 66 71 85
Available Temperatures with an Internal Controller
4.4 Performance Data
** These sengs require the installaon of the MCC-91-2 controller. When the MCC-91-2 controller is connected, these higher temperatures
are available on all controller models in the system. Use of an MCC-91-2 controller in a residenal dwelling will reduce the warranty coverage
to that of a commercial warranty applicaon.
To Obtain Performance Data:
1. Press and hold the
(Down) buon.
2. While holding the (Down) buon for 2 seconds,
press and hold the “On/O” buon (hold both buons
simultaneously).
3. Use the (Up) and (Down) buons to scroll to the
desired informaon described in the Performance
Data Table.
4. To exit performance data, repeat step 2 above.
5. When complete, the set temperature appears in the
display.
1
2
# DATA UNIT
01
Water Flow Rate x0.1 gal/min
02
Outgoing Temperature °F
03
Combuson Hours x100 Hours
04
Combuson Cycles *
05
Fan Frequency Hz
06
Addional Controllers Connected *
07
Water Flow Control Posion
0=mid, 1=Open,
2=Closed
08
Inlet Temperature °F
09
Fan Current x10 mA
10
Total Bath Fill Amount gallons
11
HEX Outlet Temperature °F
12
By-Pass Flow Control Posion Degrees of opening
15
Freeze Protecon Temperature
(Indoor Unit Only)
°F
17
Freeze Protecon Temperature
(Outdoor Unit Only)
°F
19
Pump Hours x100 Hours
20
Pump Cycles *
21
Exhaust Temperature °F
Performance Data Table
* Refer to the Technical Data Sheet located on the inside
front cover of the water heater for addional informaon.
# DATA UNIT
01
Water Flow Rate x0.1 gal/min
02
Outgoing Temperature °F
03
Combuson Hours x100 Hours
04
Combuson Cycles *
05
Fan Frequency Hz
06
Addional Controllers Connected *
07
Water Flow Control Posion
0=mid, 1=Open,
2=Closed
08
Inlet Temperature °F
09
Fan Current x10 mA
10
Total Bath Fill Amount Gallons
11
HEX Outlet Temperature °F
12
By-Pass Flow Control Posion Degrees of opening
15
Freeze Protecon Temperature
(Indoor Units Only)
°F
17
Freeze Protecon Temperature
(Outdoor Units Only)
°F
19
Pump Hours x100 Hours
20
Pump Cycles *
21
Exhaust Temperature °F
Performance Data Table
* Refer to the Technical Data Sheet located on the inside
front cover of the water heater for addional informaon.