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Notes on replacing the parts
Replacement of the parts listed below requires the following procedure.
After the parts are removed, eliminate loctite on threads by applying loctite remover, apply new loctite, and then install and tighten the parts to the specified
tightening torques below. For details about recommended loctite and loctite remover, refer to Table 11-1, and for details about the replacement parts and
their tightening torques, refer to Table 11-2.
Table 11-1
Recommended
Manufacturer
No.
Note
Loctite
Henkel
Loctite 577
Apply loctite all over from the end of external thread to the second
ridge. After installing the parts, fix the parts for at least 30 minutes
Loctite remover
Henkel
Loctite 700 Gasket Remover
Spray loctite remover over sealant on the threads, let the sealant
sit until soft, and then eliminate it with a wire brush.
Note: When using the products above, refer to the appropriate manuals that come with the individual products.
Table 11-2
Part name *1
Recommended tightening
torque [Nm] *2
PRESSURE RELIEF VALVE 3bar
15 ± 1
TEMPERATURE AND PRESSURE RELIEF VALVE
15 ± 1
*1. For more details about the listed parts refer to the parts catalogue included in this manual.
*2. Undertightening and overtightening the parts affect water seal life. Tighten the parts to the appropriate tightening torques.
When installing the parts that are not listed above, observe the tightening torques in accordance with Table
11-.
Always use a new O
-
ring or gasket.
Table 11-3
Size
[inch]
Recommended tightening torque
[Nm]
Gasket
G1/4"
8 ± 1
G3/8"
15 ± 1
G3/4"
6 ±
G1"
4 ±
G1 1/2"
4 ±
G1 3/4"
10 ± 1
O-ring
Strainer cover
45 ± 4.5
Flow switch
8 ± 1
Air vent (Automatic)
15 ± 1
Attached packing
Drain cock (primary circuit)
15 ± 1
Air vent (manual)
15 ± 1
Flare joint (for water circuit parts)
5 ±
After the procedure is complete, ensure that no water leaks.
OCH531
Summary of Contents for ecodan EHPT20X- VM2HB
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