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VC Series Manual 5
Prepare for installaon
Parts included
Tools needed
Materials needed
• The appliance must be isolated from the gas supply
piping system by closing its individual manual
shuto valve during any pressure tesng 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 installaon instrucons and
those in Care and Maintenance for adequate
combuson air intake and exhaust.
INFORMATION
• If a water heater is installed in a closed water
supply system, such as one having a backow
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 overheang occur or the gas supply fail to
shut o, turn o the manual gas control valve to
the appliance.
• Keep the air intake locaon free of chemicals such
as chlorine or bleach that produce fumes. These
fumes can damage components and reduce the life
of your appliance.
• Tankless water heater
• Color coded cold (blue) and hot (red) isolaon
valves
• Pressure relief valve
• MC-91-2 temperature controller (integrated into
indoor models; provided with outdoor models)
• Pipe wrenches (2)
• Adjustable pliers
• Screwdrivers (2)
• Wire cuers
• Gloves
• Safety glasses
• Level
Tools that might be needed
• Hammer drill with
concrete bits
• Saw
• Threading machine with
heads and oiler
• Core drill with diamond
head
• Torch set
• Copper tubing cuer
• Steel pipe cuer
Materials that may be needed
• Soap or gas leak
detector soluon
• Approved venng
• Teon tape
(recommended) or pipe
compound
• Heat tape
• Pipe insulaon
• Electrical wire and
conduit per local code
• Concrete wall anchors
• Oponal pipe cover
• Oponal temperature
controller
• 5/8” ID PVC exible
tubing
• 2 conductor 22 AWG
wire for controller
• Single gang electrical
box
• Wire nuts
• Unions and drain valves
General Instrucons (connued)
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