Process Technology Lufran LUF Series - Page 38

37
M-43-25 LUF-Series Lufran Manual
Revision - Date 03-01-04-18 Standard outlet, Standard Interface
Installation (Continued):
Plumbing (Continued):
Inlet/Outlet Connections; Flared Compression Tube Fittings:
Please note that the procedure specified below should only be performed once, when the tubing is first
connected to the fittings. Once properly tightened, the fittings will not need to be re-tightened.
1) Remove the protective plastic caps from the flared fittings on the Inlet and Outlet piping of the
heater assembly.
2) Connect properly flared tubing to the flared fitting on the heater chamber assembly.
3) Tighten the fitting nuts until fitting nut contacts the flared tubing. Tighten an additional ¼ turn.
Then tighten fitting nut to the maximum required torque value. See the table for proper values.
4) Repeat this procedure for each of the flared
tube fittings.
5) Turn on the water. Establish flow through the
heater. Check for leaks at the fittings.
6) Circulate hot fluid through the filter chamber at
the operating temperature of the system,
allowing the filter chamber to reach operating
temperature.
7) Cool down the heater to ambient. Re-tighten
the fitting nut to the minimum torque value.
See Table 6 for proper value.
Ne pas serrer les écrous de fixation à des
températures élevées. Des dommages
irréparables aux raccords de
plomberie en
résultera.
Do NOT tighten fitting nuts at elevated
temperatures. Irreparable damage to the plumbing
connections will result.
Fitting Size
Torque Value
Minimum
value
(cold)
Maximum
value
(cold)
13mm (½-inch)
flared
1.24 N-m
(11in-lbs).
1.8 N-m
(16 in-lbs).
19mm (¾-inch)
flared
1.58 N-m
(14in-lbs).
3.2 N-m
(28 in-lbs).
25mm (1-inch)
flared
3.39 N-m
(30in-lbs).
5.1 N-m
(45 in-lbs).