Plumbing Installation - Bradley Keltech HL Serie Manual Del Usuario

HL-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
• Elbows, nipples and fittings as needed
• Water hammer arrestor (recommended)
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 per local code requirements.
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
NEMA 1
2" (51)
4 .7"
(119)
1 .1"
(28)
L-Series heaters have 1/2" inlet and outlet and require 1/2" copper tubing.
6
HL Inlet 3/4" Copper
HL Outlet 3/4" Copper
11"
(279)
1 .3"
(33)
1 .3"
(33)
3/29/2018
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
(downstream of) union .
For Non-Teflon heaters: with the heater lying flat,
solder one half of each union to the inlet and outlet
tubes .
B
Install the pressure relief valve (150 psi/10 bar)
and outlet plumbing of heater per local code
requirements and route relief valve discharge to
drain . Make sure no shutoff valve is between the
relief valve discharge and the drain . Install hammer
arrestor . Ensure plumbing is secure and not
subject to vibrations .
WARNING The heater must be lying flat
to do any soldering on the inlet or outlet
tubes. Soldering on the inlet or outlet tubes
in the upright position can damage internal
components. Damage caused by dripping
solder or flux can make your heater inoperable.
C
Use 3/4" hard copper tubing or pipe as needed .
Outlet
Pressure Relief
Valve (if Local Code
Requires)
Inlet, 3/4"
Copper
1 .5"
(38)
Bradley • 215-1823 Rev. F; ECN 18-17-017
Installation
Inlet
Ball or Gate Valves
Y-Strainer, 100 Micron
Recommended
Threaded Unions
Inlet, 3/4"
Copper
Suggested Installation
Configuration
Components provided by installer
unless otherwise specified .
Reference the product options
sections or contact your local
Bradley Representative for
product options .
Power Entrance