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CLE Series Tankless Heater
2
Plumbing Installation
Components Needed:
• (2) Union 3/4"
• Shutoff valve
• Pressure and temperature relief valve (150 psi/10 bar)
• Y-Strainer (100 mesh) or inline filter (150 microns)
• (2) Gate or ball type valves
• Drain pipe
• Water hammer arrestor (recommended)
• Elbows, nipples and fittings as needed
CAUTION! To avoid damage to the electronics
or internal wiring, do not perform any
brazing or sweat soldering inside the
enclosure.
NOTICE! Failure to install proper filtration may
result in a flow switch malfunction.
NOTICE! To avoid water damage, install a drain
pipe from the pressure relief valve to an
unrestricted drain.
If end use fixture is not at the highest point in
the plumbing loop, then an automatic air vent
valve must be added at the highest point in the
system or at any drop to eliminate trapped air.
Dimensions, Plumbing and
Electrical Configurations
¾" Female
NPT Outlet
6"
2" (51)
(152)
A
B
18½" (470)
20" (508)
Entrance holes to be provided by installer .
6
¾" Female
NPT Inlet
Optional
Fused
Disconnect
10 .95"
Suggested location for power entrance .
1/10/2022
A
Install shutoff valve above (upstream of) the
heater inlet .
Install one union on the water inlet side of
the heater . Install one 100 Mesh (150 micron)
Y-strainer above (upstream of) union .
Install one union on the water outlet side of
the heater . Install one P & T Relief Valve above
union .
B
Install the pressure relief valve (150 psi/10 bar)
and outlet plumbing of heater per code
requirements and route relief valve discharge to
drain . Make sure no shutoff valve is between the
water heater outlet and the relief valve, as well as
no shutoff valve between the relief discharge and
drain . Install hammer arrestor . Ensure plumbing is
secure and not subject to vibrations .
C
Use 3/4" hard copper tubing or pipe as needed .
Outlet Inlet
P&T Relief
Valve
3⁷⁄₁₆"
(87)
To
Drain
8"
(203)
Suggested Installation Configuration
Components provided by installer unless
otherwise specified . Reference the product
(278)
options sections or contact your local
Bradley Representative for product options .
Installation
Dim. "A"
Dim. "B"
18 kW
31½" (800)
30" (762)
25 kW
37½" (953)
36" (914)
Ball or Gate
Shutoff Valves
Y-Strainer with
100 Mesh Screen
Recommended
Threaded
Unions
Bradley • 215-1822 Rev. D
mm
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