© Danfoss | HydronicS | Sub-Systems | 2023.08 AN45665682284301-CN0102 | 1
Installation Guide
FHM-CN2
Pre-assembled Mixing Shunt
Installation overview
Installation The FHM-CN2 must be connected to a system
according to the illustrations.
A
E
B
C
1 4
6
2
5
3
E1
Fig 2.
APrimary water side (horizontal direction)
BSecondary water supply
CSecondary return
DPrimary water supply (vertical direction)
EPrimary return
1. Remove the union nuts 1, 2 and 3 and rubber
gasket 5 from mixing shunt which to be used in
steps below, as shown in Fig. 2.
2. Pre-mounted union nut 1 for connection to the
primary side supply pipe . The union nut 1 to
control valve 4 must be tightened with a torque
of at least 85 Nm without any sealing materials,
as shown in Fig. 2.
3. Pre-mounted union nuts 2 and 3 for connection
to the secondary side pipe or directly on a
Danfoss manifold. The union nuts 2 and 3 to
mixing shunt must be tightened with a torque
of 15 to 25 Nm with enclosed rubber gasket, as
shown in Fig. 2.
4. The end of primary side return pipe E1 for
connection to primary side return pipe E.
5. Remove the blue cap 6, as shown in Fig. 2.
6. FTC thermostatic sensor is in package. Mount
it on the valve according to the enclosed
instruction, as shown in Fig. 3.
FTC
Fig 3.
Fig. 1: Overview
