REMEHA P 420 Assembly Instructions Manual page 13

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Fit the 2 threaded rods using multiple slip joint pliers (body
accessories package) M12x175 for the flue gas outlet.
Secure the outlet and return pipes (boiler body accessories
package) using 4 nuts H16 for each pipe (24 mm spanner),
remembering to insert the leak proof seal.
A : P420-8 to P420-10.
B : For P420-11 to P420-14, the return collector is replaced by
a collector with water distributor (marked "INJ")
Fit the flue gas outlet to the heating body (6 nuts H12 + 6 flat
washers L12 - 19 mm spanner).
Fit 2 screws HM 12x60 + 2 nuts to the flue gas outlet for the
sweeping hatch (see detail).
Affix the sweeping hatches (package CS 20) using 4 nuts H12 +
2 washers L12 + 2 washers M12.
02/04/08 - 300016854-001-A
Assembling the flow switch:
Fasten the flow switch on the sleeve tube. The direction of the arrow
head on the collet must be the same as the flowing out of the water
in the tube.
The table opposite is used to check that the flow controller delivered
corresponds to the boiler being assembled.
Boiler Flow controller no.
P 420-8
P 420-9
P 420-10
P 420-11
P 420-12
P 420-13
P 420-14
P 420
8802-4706
8802-4710
8802-4712
8802-4722
8802-4725
8802-4727
8802-4729
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