10
NXW REVERSIBLE CHILLER INSTALLATION MANUAL
General
System piping should be kept as simple as possible to
minimize the pressure drop, but hand valves should be field
installed to facilitate unit servicing. The piping installation
should provide service personnel with the ability to measure
and/or monitor water temperatures and pressures.
Source and load fluid connections are provided with 2-inch
[50.8mm] Victaulic grooved nipples (see Figure 4). Each
nipple will also have a PT port installed for test and balance
purposes. It will be the installing contractor’s responsibility
to adequately support incoming piping to avoid damage to
the unit’s piping or heat exchangers. The water lines should
be routed so as not to interfere with access to the unit.
Field Connected Water Piping
Figure 4: Water Connections (NXW360 shown)
P/T Plug
2” Victaulic
Grooved
Nipples
Figure 5: Chiller Back View (NXW360 shown)
Water
Connection
Ports
Out
In
In
Out
Brazed Plate Heat Exchanger
Optional Connection Kit
CKV160FL (Includes four
of each)
TKC16S-4
(1 of 4)
CAUTION: Remove the plastic protective caps in the ends of each of the four water pipes on the heat
exchangers prior to piping connection. Failure to remove the caps will result in serious damage and could void
the warranty.
For any installation where the transmission of vibration
through the piping connections could cause unacceptable
noise levels in occupied spaces it is important to provide
adequate vibration damping. One method is to use the
optional Adapter Hose Kit (kit number TKC16S-4). This Kit
consists of four pieces of a braided stainless steel flexible
hose with a 2” Victaulic connection on one end and a 2”
MPT connection with pipe union on the other. Overall length
of each piece is 18”.
NOTE:
Units are factory run-tested using propylene glycol.
Prior to connecting piping to unit, thoroughly flush heat
exchangers.
