Watts T55-85MHP40 - Manual (Page 26)

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Installation
continued
– discharge line
HAZARDOUS PRESSURE:
Shut off water or circulation system
and bleed off any system pressure.
1/4'' or 1/2''
FNPT Reduction
Bushing
Injection
Check
Valve
Shut-Off
Valve
Typical Point of Injection
The injection point and fitting require
periodic maintenance to clean any
deposits or buildup. To allow quick access
to the point of injection, Stenner
recommends the installation of shut-off
valves.
26-100 psi models:
• Prior to making tubing connection, test
check valve and NPT threads for leaks by
pressurizing system.
• Tighten an additional 1/4 turn if
necessary. Make final tube connection
as instructed in Install Suction Line
instructions.
0-25 psi models:
Low-pressure models do not have a check
valve and check valve body. Insert the
tubing 3/4" to 1" into the injection fitting
and make tubing connection as instructed
in Install Suction Line instructions.
5. Turn pump switch on and observe
chemical flow as actuated by system.
6. After a suitable amount of dosing time,
perform tests for required chemical levels.
If necessary, fine-tune dosing levels by
rotating dial ring (adjustable pumps only).