Instructions / Assembly

Water Recirculation Piping Diagram (with Comfort Valve Kit)
Remote
Control
Tankless
water heater
Power receptacle
should be close to
appliance
Pump power
cord - 6 ft long
Tankless
water heater
power cord
Cold
Cold
To fixture
Hot
Hot
Push button
(installed at
desired location)
Extended
cabinet
with pump
(Front cover)
Service
valves
Fixtures
Hot Cold Hot Cold
Cold
water line
Expansion
tank
Install Comfort Valve
at the farthest fixture
Cold water
to tankless
water heater
Cold water
supply
(Copper pipe)
Check
valve
Shut-off
valve
Shut-off
valve
(Copper pipe)
Gray wire
50” long
Comfort Valve Kit (part number RTG20285), can be used for applications that DO NOT have a dedicated return
line. Comfort Valve should be installed at the farthest fixture. Refer to Table 3 on page 5 for maximum allowable
equivalent pipe length.
*Sold separately. Motion sensor and remote transmitter kit cannot be installed together because they operate on
different voltages.
Rheem Part
Number
SP20861* Remote transmitter, receiver kit Start system with wireless remote control
Description What it does
Motion sensor activation kit Start system with automatic motion sensor
Individual activation push button Start system with hard-wired push button
SP20862*
SP20863
Activation Accessories
CAUTION: Warm water may be present in cold water fixtures and cold water line during
pump operation and a short period thereafter, when using cold water line as a return line.
NOTICE: If required, the length of the push button wire can be increased. Extension
wire can be any 18 to 22 AWG wire similar to a thermostat wire and need not be
polarity sensitive. Attach extension wire using appropriate wire nuts. It is not
recommended to have the wires exposed.
Figure 7
Table 4
6