Rheem Residential Indoor Gas Tankless Water Heater Mounting the Water Heater

	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).