Plumbing Installation - Bradley Keltech SNA Serie Manual Del Usuario

Installation
2

Plumbing Installation

Components Needed:
• (6) Union 1-1/4"
• 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 sensor 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
12"
(305mm)
6" (152mm)
Access Panel
29"
(737mm)
B
A
1-1/4" NPT
Female
"TepidGuard "
™
Discharge
(Drain)
Suggested Location For
Power Entrance . Holes
Provided By Installer .
Bradley • 215-1815 Rev. E; ECN 16-17-016
23-1/2" (597mm)
6" (152mm)
15-1/4"
(387mm)
3-3/4"
5-1/2" (140mm)
(95mm)
1-1/4" Female NPT
Outlet
31-1/2"
(800mm)
Optional
Fused
1-1/4" NPT
Disconnect
Female
30"
(762mm)
A
Install shutoff valve above (upstream of)
the heater inlet .
Install one union on the water inlet side of the
heater and another union upstream of the 100
Mesh (150 micron) y-strainer .
Install one union on the water outlet side of the
heater and another after the P & T Relief Valve .
B
Install one union on the TepidGuard
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 valve discharge
and drain . Ensure plumbing is secure and not
subject to vibrations .
C
Use 1-1/4" hard copper tubing or pipe as needed .
36kW
54kW
63kW
72kW
108kW
126kW
144kW
Relief
Valve
"TepidGuard "
™
Discharge
(Drain)
Threaded
Union
Inlet
To Drain
Suggested Installation Configuration
Components provided by installer unless otherwise specified .
Reference the product options sections or contact your local Bradley
Representative for product options .
6/10/2016
SNA-Series Tankless Heater
™
Dim. "A" Dim. "B"
60"(1524) 48"(1219)
60"(1524) 48"(1219)
72"(1829) 60"(1524)
60"(1524) 48"(1219)
60"(1524) 48"(1219)
72"(1829) 60"(1524)
72"(1829) 60"(1524)
Outlet
C
Optional
Fused
Disconnect
discharge outlet .
Dim. "C"
36"(914)
36"(914)
48"(1219)
36"(914)
36"(914)
48"(1219)
48"(1219)
Maintain area
above Access
Panel for height
"C" to be clear of
obstructions
Rotate outlet 90°
during installation
for adequate
clearance
Inlet
"Y" Strainer
7