Installer manual Autotrol Magnum 293 - 298 Logix 742-762 - Installation
36 / 110 Ref. MKT-IM-012 / D - 03.02.2022
5.2.3 Mechanical
Caution - material
Risk of damage due to wrong lubricant use!
Do not use petroleum-based lubricants such as vaseline, oils, or hydrocarbon-based
lubricants.
Use only approved silicone grease or soapy water!
• All plastic connections should be hand-tightened. PTFE (plumber’s tape) may be used on
connections that do not use an O-ring seal. Do not use pliers or pipe wrenches;
• existing plumbing should be in a good shape and free from limescale. In case of doubt, it is
preferable to replace it;
• all plumbing must be completed according to local codes and installed without tension or
bending stresses;
• soldering near the drain line should be done before connecting the drain line to the valve.
Excessive heat will cause interior damage to the valve;
• do not use lead-based solder for sweat solder connections;
• the drain line may be elevated up to 1.8 m providing the run does not exceed 4.6 m and water
pressure at the softener is not less than 2.76 bar. Elevation can increase by 61 cm for each
additional 0.69 bar of water pressure at the drain connector;
• to prevent mineral loss during backwash and to ensure proper operation of the valve, a drain
line flow control must be plumbed into the drain line prior to placing the valve in service
mode. Flow controls from 18.92 to 151.4 L/min can be easily installed in the drain line. Flow
controls greater than 151.4 L/min must be plumbed externally. The selection of the proper
drain line flow control depends on the tank size and media used for the installation;
• the drain line must be a minimum of 12.7 mm (½") in diameter. Use 19 mm (¾") pipe if the
backwash flow rate is greater than 26.5 lpm or the pipe length is greater than 6 m;
• do not support the weight of the system on the control valve fittings, plumbing, or the bypass;
• it is not recommended to use sealants on the threads. Use PTFE (plumber’s tape) on the
threads of the 25.4 mm (1") NPT elbow, the drain line connections, and other NPT/BSP
threads.
5.2.4 Outdoor Locations
When the water softening system is installed outdoors, several points must be considered:
• moisture — The valve and 700 controller are rated for NEMA 3 locations. Falling water should
not affect performance. The system is not designed to withstand extreme humidity or water
spray from below. Examples are: constant heavy mist, near corrosive environment, upwards
spray from sprinkler;
• direct Sunlight — The materials used will fade or discolour over time in direct sunlight. The
integrity of the materials will not degrade to cause system failures. If it is necessary to locate
the softener in direct sunlight, a protective outdoor cover (P/N 1267811) over the valve and
controller is necessary;
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