Flow Controller 3
R e v. : F e b u r a r y 9 , 2 0 1 6
6
G e o t h e r m a l H e a t P u m p S y s t e m s
Piping Installation
Figure 5: AHK5EC Hose Kit Typical Detail
Figure 6: Two Units Utilizing One Flow
Controller (One Side Shown)
can be accomplished by a fusion or barbed fitting as shown
in Table 1. In multiple Flow Controller systems such as
multifamily housing, PE can also be used on the heat pump
side. Polyethylene is the only acceptable material for pipe
buried in the ground.
Unit side piping is typically connected using the hose
kit (AHK5EC), which contains all fittings necessary for
connection between the Flow Controller and the unit as
shown in Figure 5.
In multiple unit systems, PE piping materials can be used
to ‘tee’ more than one unit into the Flow Controller. It is
recommended that a hose kit still be used at the end of the
PE piping run to facilitate ease of installation and service of
the units as shown in Figure 6. Insulate all exposed piping.
Plastic to metal threads should not be used due to their
leakage potential.
The APSM pump slaving module can be used to allow a
single Flow Controller to be controlled by two heat pumps as
shown in figure 7a.
