Rheem Residential Indoor Gas Tankless Water Heater Mounting the Water Heater

Page 9

 

Mounting the Water Heater

The brackets can be adjusted to change

 

Make sure the location of the appliance

the distance between the back of the

 

appliance and the wall within the range of

 

allows for easy access and operation.

CAUTION:

3/8 to 1 1/2

 

 

 

Reinforcement of the wall is

Wall studs should be utilized when

Loosen the adjustment screws of both the

required in case the wall is

mounting the water heater to the wall.

top and the bottom brackets to adjust the

not strong enough to hold

In case of dry wall or concrete wall use

the appliance.

distance. (See diagram below)

dry wall anchors or lag bolts.

 

 

The water heater requires 120VAC/60Hz. Have a receptacle with ground terminal near the water heater. The length of the power supply cord is 10 feet.

Install a wood screw for the upper bracket with a clearance of 1/8 between the wall and the screw head. Hang the center of the upper bracket on the screw.

Using a wood screw and a washer, affix the lower bracket to the wall (Left and Right). Repeat to affix the top bracket.

IMPORTANT: Do not

Water Supply Connections

 

apply heat to the HOT or

Plumbing should be carried out by a

 

COLD water connections. If

To supply hot water to upper floors,

qualified plumber in accordance with local

sweat connections are used,

additional water pressure (0.44 psi/ft)

codes.

sweat tubing to adapter

must be ensured. The measurement

 

before fitting adapter to the

Use approved plumbing materials only.

should be calculated by the distance

water connections on

between the water inlet of the water

 

heater. Any heat applied to

All material between the water supply and

heater (ground level) to the hot water

the water supply fittings

faucet (upper floor level).

the water heater must be metal.

will permanently damage

 

 

 

the internal components of

The diameter of the pipe lines should be a

Well water systems should be set at

the water heater.

a range of 50-60 psi.

minimum of 3/4 .

 

 

 

To conserve energy and to prevent

When the water is supplied from a

 

water supply tank, the height of the

 

freezing, insulate both cold and hot water

 

tank and the diameter of the pipes and

CAUTION: This water

supply lines. DO NOT cover the drain

their relation to water pressure, should

heater must only be used

valves.

be taken into consideration. Gravity

with the following water

 

 

water pressure is not recommended.

supply system conditions:

To ensure proper operation of the water

 

With clean, potable water

heater, the following water pressure

Notice: If the water flow resistance of

guidelines should be followed:

a shower head is too high, the burner

free of corrosive

 

chemicals, sand, dirt, or

Operation of the water heater requires

in the water heater will fail to ignite.

other contaminates.

Keep the shower head clean from

the minimum water pressure of 14 psi

With inlet water

debris that could cause additional

and a minimum water flow rate of

pressure drop.

temperatures above 32oF,

0.66 gpm.

but not exceeding 120oF.

 

 

Notice: If using mixing valves on the

 

Additional water pressure is required

Free of lime and scale

outlet, choose one which prevents cold

for long pipe runs and outlet fitting(s)

deposits.

water pressure from overcoming hot

water pressure drops.

 

water line pressure.

DO NOT reverse the hot

 

 

 

and cold water

To maintain proper performance, ensure

 

connections. The water

sufficient water supply pressure. The

 

heater will not operate.

Required Water Pressure = Min.

 

 

Operating Water Pressure (14 psi) +

 

 

Pipe Pressure Loss + Faucet and

 

 

Shower Pressure Loss + Safety Margin

 

9

(more than 5 psi).

 

 

 

Image 9
Contents Tankless Water Heater Installation Instructions Safety InformationCare and Cleaning Troubleshooting TipsInstall and Properly Vent the Water Heater Water Temperature Setting Natural GAS and Liquefied Petroleum Models Read and Follow this Safety Information Carefully Location Installing the water heaterCorrosive Atmospheres Combustion and Ventilation AirMounting the Water Heater Water Supply ConnectionsWater pressure is not recommended Relief Valve Govern the installation of relief valvesPressure Testing the Gas Supply System Leak TestingGas Supply High AltitudeVenting Lengths VentingMaximum Vent Length Minimum Vent LengthVenting Through Closed Spaces Vent AdapterDraining the Condensate Additional Considerations Horizontal Vent Terminal Location