Temperature Controller Settings

Rinnai RV53E, RV53I Temperature Controller Settings, Model Temperature Settings Available ºF

This water heater will attempt to provide hot water at the temperature setting even when the water flow is varied or when more than 1 tap is in use. The water heater can deliver water at only one temperature setting at a time. The available temperatures for a given model are provided below.

Model					Temperature Settings Available (ºF)
RV53i	98	100	102	104	106	108	110	115	120	125	130	135	140	150	160
RV53e														*	*
Temp in Celsius ºC	37	38	39	40	41	42	43	46	49	52	54	57	60	66	71

*MCC-91 Temperature Controller

These settings require the MCC-91 controller. When the MCC-91 controller is connected, these higher temperatures are available on all controller models in the system.

Use of an MCC-91 controller in a residential dwelling will reduce the warranty coverage to that of a commercial warranty application which is no coverage for these models (except when an MCC-91 is used with a Rinnai Hydronic Air Handler). See the Warranty Information for more information on the warranty.

The MCC-91 controller is intended for commercial and hydronic applications only. If an MCC-91 controller is used in a residential dwelling for a hydronics application, a mixing valve must also be installed to limit the potable hot water temperature to a safe temperature. Water temperatures over 125º F (52º C) can cause severe burns or scalding. Refer to the Danger Alert on water temperatures. Rinnai shall not, in any event, be liable for damages resulting from such misuse or misapplication.

Suggested temperatures are

•	Kitchen	120	ºF (49º C)
•	Shower	98 - 110 ºF (37 - 43 ºC)
•	Bath Fill	102	- 110 ºF (39 - 43 ºC)

These temperatures are suggestions only.

A temperature lower than 98 ºF (37 ºC) 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/Off” button for 5 seconds while the water heater is OFF.

Temperature Options Without a Temperature Controller

The default temperature setting for this appliance installed without a temperature controller is 120º F

120º F (49º C)

140º F (60º C)

(49º C). If desired the temperature setting can be changed to 140º F (60º C) by adjustment of a switch.

Set switch 5 to ON to obtain 140º F water temperature setting.

Set switch 5 to OFF (default) to obtain 120º F water temperature setting.

If a temperature controller is installed then switch 5 has no effect on temperature settings.

Switch No.

F 2

Switch No.

F 2

4 5 6 7 8

6	RV53i & RV53e Operation and Installation Manual