Prepare For Installa On - Rinnai RL75i Installation And Operation Manual

General Instruc ons (con nued)
The appliance must be isolated from the gas supply
piping system by closing its individual manual
shutoff valve during any pressure tes ng 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
combus on 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 overhea ng occur or the gas supply fail to
shut off, turn off the manual gas control valve to
the appliance.
Keep the air intake loca on 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 installa on

Parts included
Tankless water heater
Color coded cold (blue) and hot (red) isola on
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 cu ers
Tools that might be needed
Hammer drill with
concrete bits
Saw
Threading machine with
heads and oiler
Materials needed
Soap or gas leak
detector solu on
Approved ven ng
Materials that may be needed
Heat tape
Pipe insula on
Electrical wire and
conduit per local code
Concrete wall anchors
Op onal pipe cover
Op onal temperature
controller
VC Series Manual
Gloves
Safety glasses
Level
Core drill with diamond
head
Torch set
Copper tubing cu er
Steel pipe cu er
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