Installation Guide
INSTALLER
Installing the Junction Box 
Functions of the Junction Box:
1. Allows precisely location of the ChromaSteam3 fixture within the steam 
room ceiling.
2.  Provides a secure and easily identifiable holder for the control cable 
while the steam room is being constructed.
3. Works with the ChromaSteam3 fixture’s retention springs to prevent 
the fixture from falling and injuring a person in the enclosure.
Locating the Fixture:
1. Locate the fixture in a location for optimal lighting within the 
enclosure.
2. ChromaSteam3 is for mood lighting only. Not to be used as a primary 
lighting source.
3.    Do  not  locate  the  fixture  in  direct  shower  spray,  near  direct  steam 
emission, or in any location where a lighting fixture may be damaged.
IMPORTANT NOTE: 
Maximum distance between the two fixtures  
is 10 feet.
To Install the Junction Box:
1. Remove the two screws from the interior clips of the junction box, and 
hand-screw them into the wings of the junction box (Figure 7).
2. Remove one of the four knockouts from the junction box (Figure 7).  
the resulting hole will allow routing of the 30-foot control cable or  
Duo cable into the junction box.. 
3. Locate the two tabs on the junction box, and line them up against a 
ceiling joist. The tabs locate the junction box proud of (slightly raised 
from) the joist. Screw the two screws into the ceiling joist to secure the 
junction box (Figure 8).
4. Route one end of the 30-foot control cable or one of the longer ends 
of the Duo cable (with a yellow flag stating “To Fixture”) through the 
knockout into the junction box, and fasten it to one of the interior clips 
to hold it in place (Figure 9). Note that both longer ends of the 30- 
foot control cable are the same.
IMPORTANT NOTE: 
Contact MrSteam to purchase an optional 60-foot 
cable (Part No. 104268-60). 
• Be careful not to strain, staple, pinch, or otherwise damage the cable. 
• Route cable as required to permit replacement. 
• Cable should be run in dedicated conduit to facilitate installation, ser-
vice, and replacement.
• To prevent damage to the cable, do not route cable close to hot 
water, steam piping, or any heat source.
5. After the junction box is completely installed, ensure that you create an  
opening in the steam room ceiling that aligns with the junction box  
(Figure 10).
•  Installation to be performed by a 
qualified and licensed electrician.
•  Shock Hazard. Ensure that power 
is turned off during installation. 
Turn off power at breaker panel.
Failure to use the junction box with 
correctly installed retention springs 
may result in the ChromaSteam3 fix-
ture falling and causing injury.
•  To prevent leaks, do not install 
the ChromaSteam3 fixture where 
direct contact with steam emission 
or water spray could occur.
•  The ChromaSteam3 fixture is not 
intended to be installed underwa-
ter. To prevent leaks, do not install 
the ChromaSteam3 fixture in a 
location where it could become 
submerged. 
•  The ChromaSteam3 fixture is 
not rated for insulation contact. 
Insulation must be a minimum 
of 3” away from all sides of the 
ChromaSteam3 fixture assembly 
to prevent damage to the fixture. 
WARNING
!
NOTICE
NOTICE
CAUTION
!
mr
.
steam
®    
INSTALLATION, OPERATION, AND MAINTENANCE  ChromaSteam
®
3
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