Prepare For Installation - Rinnai RLX94i Installation And Operation Manual

General Instructions (continued)

The appliance must be isolated from the gas supply
piping system by closing its individual manual
shutoff valve during any pressure testing 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 installation instructions and
those in Care and Maintenance for adequate
combustion air intake and exhaust.
INFORMATION

If a water heater is installed in a closed water
supply system, such as one having a backflow
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 overheating occur or the gas supply fail to
shut off, turn off the manual gas control valve to
the appliance.

Keep the air intake location free of chemicals such
as chlorine or bleach that produce fumes. These
fumes can damage components and reduce the life
of your appliance.

Prepare for installation

Parts included

Tankless water heater

Color coded cold (blue) and hot (red) isolation
valves

Pressure relief valve

MC-91-2 temperature controller (integrated into
indoor models; provided with outdoor models)
Tools needed

Pipe wrenches (2)

Adjustable pliers

Screwdrivers (2)

Wire cutters
Tools that might be needed

Hammer drill with
concrete bits

Saw

Threading machine with
heads and oiler
Materials needed

Soap or gas leak
detector solution

Approved venting
Materials that may be needed

Heat tape

Pipe insulation

Electrical wire and
conduit per local code

Concrete wall anchors

Optional pipe cover

Optional temperature
controller
VC Series Manual

Gloves

Safety glasses

Level

Core drill with diamond
head

Torch set

Copper tubing cutter

Steel pipe cutter

Teflon tape
(recommended) or pipe
compound

5/8" ID PVC flexible
tubing

2 conductor 22 AWG
wire for controller

Single gang electrical
box

Wire nuts

Unions and drain valves
5