Installation Guide
INSTALLATION INSTRUCTIONS
5
INSERT THE HEATER ASSEMBLY IN THE WALL CAN
 Wire connections
STEP 4
 Install grill
STEP 5
Attach grill with the screws provided. 
tip: hand tighten both screws first before securing. The open part of the grill goes on the bottom.
Turn power on at the main disconnect panel. Proceed to OPERATING INSTRUCTIONS.
Figure 4
Figure 3 
Wire Connections
HOW TO CHANGE THE WATTAGE
Your heater has two connection wires and the wall can has a green grounding wire. Your supply wire 
has two connection wires and a supply ground wire. 
1. Connect supply ground wire to green grounding wire in wall can (See Figure 3).
2. Connect one of the supply wires to one of your heater wires with a wire connector (not included): 
 A. for 240 volts, it doesn’t matter which heater wire (Figure 3);
 B. for 120 volts, connect the neutral (white) supply wire to the white heater wire (Figure 3).
3. Connect the remaining supply wire to the remaining heater wire with a wire connector (not 
included) (See Figure 3). 
4. Insert the bottom edge of the heater 
assembly into the bottom of the wall 
can (See Figure 3). 
5. Push all wires back into the side of 
the wall can. Make sure connections 
are tight and none of the wires are 
caught between the heater assembly 
and the wall can. 
6. Attach the heater assembly at top of 
the wall can with screw provided.
Multi-watt RM models oer a variety of heat output options. They are factory set to maximum wattage 
(Figure 4). If you have a multi-watt model, you can change the heating element wire connections to a 
lower wattage on the right hand side of the heater assembly (See Figures 5 and 6). 
If you change the wattage, mark the wiring diagram on the back of the heater with the wattage used 
for future reference. Proceed to STEP 4.
Multi-watt models RM162, RM168 and RM151 only
Figure 5 Figure 6
supply 
wires
green grounding wire
wall can
Model
Maximum Wattage 
Figure 4
Medium Wattage 
Figure 5
Lowest Wattage 
Figure 6
RM162, RM168 1600 900 700
RM151 1500 1000 500
blue 
terminal
remove blue terminal and 
wrap end with electrical 
tape; secure to other wires 
with zip tie.
yellow 
terminal
yellow 
terminal
remove blue terminal and wrap 
end with electrical tape; secure 
to other wires with zip tie. Move 
yellow terminal and attach it where 
blue terminal was removed.
yellow 
terminal 
moved 
here
blue 
terminal 
removed
tip: to remove terminals 
easier, pull and wiggle 
slightly back and forth at the 
same time
blue terminal 
removed








