Watts Autotrol 255 (400 Series) - Manual (Page 7)

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rated temperature and pressure safety relief valve. Also, be certain that
local codes are not violated.
5. Do not locate unit where it or it’s connections (including the drain and overflow
lines) will ever be subjected to room temperatures under 34 o F (1 o C) or over
120 o F (49 o C).
6. Do not install unit near acid or acid fumes.
7. The use of resin cleaners in an unvented enclosure is not recommended.
Water Line Connection
The installation of a bypass valve system is recommended to provide for
occasions when the water conditioner must be bypassed for hard water or for
servicing.
The most common bypass systems are the Autotrol ® Series 256 bypass valve
(Figure 4) and plumbed-in globe valves (Figure 5). Though both are similar in
function, the 256 Autotrol bypass offers simplicity and ease of operation.
Figure 4 Autotrol Series 256 Bypass Valve
Figure 5 Typical Globe Valve Bypass System
Not in Bypass In Bypass
BY
PA SS
BY
PA SS
B
Y
P
A
S
S
B
Y
P
A
S
S
Water
Conditioner
Water
Conditioner
Not in Bypass
In Bypass
1018075 Rev I.fm Page 7 Tuesday, February 17, 2004 4:26 PM