Temperature Controllers - Models
Dimensions (inches): 3.5 W x 4.75 H x 0.75 D
The MC-91 controller is the standard temperature controller that is supplied with the water heater. On indoor
models it is integrated into the front panel. The MCC-91 controller is for commercial and hydronic applications
requiring higher temperatures. When the MCC-91 controller is connected, these higher temperatures are
available on all controller models in the system. Refer to the section on temperature ranges.
In Use
Indicator
Temperature
Display
Temperature
Selection
Dimensions (inches): 4.33 W x 5.90 H x 1.16 D
Temperature
Display
Temperature
Selection
* Requires the
transceiver,
MC-502RC-
Refer to the MC-502RC-1US-S manual and the Wireless Controller Installation Instructions for complete details
on features, operation, and installation.
6
MC-91-1US & MCC-91-1US
MC-502RC-1US-S * (Wireless)
ON/OFF
Button
VB Series Outdoor LS Manual
Priority
Indicator
Priority
Button
ON/OFF
Button
Priority
Indicator
In Use
Indicator
Priority
Button