Installation Guide
mr
.
steam
®
  INSTALLER INFORMATION
__________________________________________________________________
5
3a
3b
4a
4a
5b
5a
Locating the Control
Determine the desired installation location of the control. The iSteam
®
3 
controls are designed to be installed inside or outside the steam room 
as a matter of personal preference. If the control is installed inside 
the steam room:
• Locate the control 4-5 feet above the oor near the bather seating area.
• The control features an integral temperature sensor. Locate the control in a 
location representative of the desired steam bathing temperatures. Do not 
locate the control above or near the steam head or direct steam emissions.
• Locate the control on a vertical wall.
• The control cable is 30 feet. Insure that the control and steam generator are 
located accordingly.
IMPORTANT NOTES:
• If required, contact MrSteam to purchase an optional 60’ iSteam3  
control cable part number 104117-60.
• If the control is installed outside the steam room a Remote Temperature 
Probe Part Number MSTS must be installed inside the steam room. 
Refer to the MSTS installation manual before installing the control.
• Insure MrSteam steam generator is iSteam3 compatible and has 
a serial number 1174000 or higher. 
Installation with Optional Rough-In Box 
A rough-in box is supplied with iSteam3 for new construction. The rough 
-in box will allow precise location of the iSteam3 control and provide a 
secure and easily identifiable place for the cable while the steam room is 
being constructed. 
STEP 1 
Take the rough-in box out of the package. Remove the two 
screws (1a ) and place them in the top and bottom wings of the rough-in 
box (1b).
STEP 2 
Select a KNOCK-OUT (2a) to route the control cable into the box. 
STEP 3 Line up the two TABS (3a) on the right side of the box against a 
stud. These TABS help locate the box to sit PROUD of the stud (3b).
STEP 4 
SCREW (4a) the two supplied screws into the stud.
STEP 5 
Route the CONTROL CABLE (5a) through the back of the rough-in 
box and clip it under one of the TABS (5b) that previously held the screws. 
The two ends of the control cable are the same.
IMPORTANT NOTE: The control cable should be run in a dedicated 1” 
conduit to facilitate installation and service.
1a
1b
1b
2a










