AST1257MP-960
Page 16
20/11/2006
Installation
All plumbing and electrical connections must conform
to local codes. Inspect the unit carefully for carrier
shortage or shipping damage.
Location Selection
•
Locate unit as close to a drain as possible
•
If supplementary water treating equipment is
required, make sure that adequate additional
space is available. Locate the brine tank in an
accessible place so that salt can easily be added.
•
Do not install any unit closer than 10ft (3m) of
piping between the outlet of the water conditioner
and the inlet of the water heater. Water heaters
can transmit heat back down the cold water pipe
into the control valve. Hot water can severely
damage the controller.
A 10ft (3m) total pipe run (including bends, elbows
etc) is a reasonable distance to prevent hot water
damage. A positive way to prevent hot water from
flowing from a heat source to the conditioner is to
install a check valve in the soft water piping from the
conditioner. If a check valve is installed, make sure
that the water-heating unit is equipped with a properly
rated temperature and pressure safety relief valve.
Always conform to local codes.
•
Do not locate the unit in an area where the temp
ever falls below 34ºF (1ºC) or over 120ºF (49ºC).
•
Do not install the unit near acid or acid fumes.
•
Do not expose the unit to petroleum products.
Water Line Connection
A bypass valve system must be installed to provide
for occasions when the water conditioner must is by-
passed for hard water or for servicing. The most
common bypass systems are the Autotrol Series 156
Bypass Valve, Figure 3, and plumbed-in globe
valves, Figure 4. Though both are similar in function,
the Autotrol Bypass offers simplicity and ease of
operation.
Drain Line Connection
The ideal location for the unit is above and not more
than 20ft (6.1m) from the drain. For such installations,
using the appropriate adaptor fitting (not supplied),
connect 1/2 in (1.3cm) plastic tubing to the drain line
connection located at the rear of the control.
If the unit is located more than 20ft (6.1m) from the
drain, use 3/4in (1.9cm) tubing for runs up to 40ft
(12.2m). You may elevate the line up to 6ft (1.8m)
providing the run does not exceed 15ft (4.6m) and the
water pressure at the conditioner is not less than
40psi (280kPa). You may elevate an additional 2ft
(61cm) for each additional 10psi (70kPa) of water
pressure.
When the drain line is elevated and empties into a
drain which is below the level of the control valve,
form a 7 inch (17cm) loop at the drain end of the line
so that the bottom of the loop is level with the drain
line connection. This provides an adequate siphon
trap.
If the drain empties into an overhead sewer line, a
sink-type trap must be used.
Not In Bypass
In Bypass
Not In Bypass
In Bypass
Figure 3 - Autotrol Series 156 Bypass Valve
Figure 4 - Typical Globe Valve Bypass
System
Figure 5 - Air Gap Installation
