Prepare For Installa On; Tools Needed; Materials Needed - Rinnai RUR98i Installation And Operation Manual

General Instructi ns (conti ued)
The appliance must be isolated from the gas supply

piping system by closing its individual manual
shuto valve during any pressure testi g of the gas
supply piping system at test pressures equal to or
less than 1/2 psi (3.5 kPa) (13.84 in W.C.).
You must follow the installa on instruc ons and

those in Care and Maintenance for adequate
combusti n air intake and exhaust.
INFORMATION
If the water heater is installed in a closed water

supply system, such as one having a back ow
preventer in the cold water supply line, means
shall be provided to control thermal expansion.
Contact the water supplier or local plumbing
inspector on how to control thermal expansion.
Should overhea ng occur or the gas supply fail to

shut off, turn o the manual gas control valve to
the appliance.
Keep the air intake locati n free of chemicals, such

as chlorine or bleach, that produce fumes. These
fumes can damage components and reduce the life
of the appliance.
NOTE
The MC-195T temperature controller is
contained within the Styrofoam packing of the
tankless water heater, be sure not to discard it.
This controller is necessary for opera on with this
tankless unit.
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Prepare for installati n
Parts included

Tankless water heater with integrated pump

Color coded cold (blue) and hot (red) isolati n valves

Pressure relief valve

MC-195T temperature controller

Self Tapping Screws (Qty - 2)

Thermal By-Pass Valve

Tools needed


Pipe wrenches (2)

Adjustable pliers

Screwdrivers (2)

Wire cutt rs
Tools that might be needed

Hammer drill with
concrete bits

Saw

Threading machine with
heads and oiler

Materials needed


Soap or gas leak detector
soluti n

Approved ventin
Materials that may be needed

Heat tape

Pipe insulati n

Electrical wire and
conduit per local code

Concrete wall anchors

Opti nal pipe cover

Opti nal temperature
controller

5/8" ID PVC exible
tubing

2 conductor 22 AWG

Gloves

Safety glasses

Level

Core drill with diamond
head

Torch set

Copper tubing cutt r

Steel pipe cutt r

Thermal Expansion Tank

Te on tape
(recommended) or pipe
compound
wire for controller

Single gang electrical box

Wire nuts

Unions and drain valves

Additi nal Piping (for
dedicated return
applicati ns)

Pressure Regulator

Check Valve

Air Separator
5