Enertech VS Series - Flow Center Installation and Connections

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Enertech Global IOM, VS/VT Models, Rev A
Section 5: Unit Piping Installation
Interior Piping
All interior piping must be sized for proper ow rates
and pressure loss. Insulation should be used on all
inside piping when minimum loop temperatures
are expected to be less than 50°F. Use the table
below for insulation sizes with different pipe sizes.
All pipe insulation should be a closed cell and
have a minimum wall thickness of 3/8”. All piping
insulation should be glued and sealed to prevent
condensation and dripping. Interior piping may
consist of the following materials: HDPE, copper,
brass, or rubber hose (hose kit only). PVC is not
allowed on pressurized systems.
Table 3: Pipe Insulation
Piping Material Insulation Description
1” IPS Hose 1-3/8” ID - 3/8” Wall
1” IPS PE 1-1/4” ID - 3/8” Wall
1-1/4” IPS PE 1-5/8” ID - 3/8” Wall
2” IPS PD 2-1/8” ID - 3/8” Wall
Condensation Drain Connection
Connect the EZ-Trap to the 3/4” equipment
condensate drain connection as shown in Figure 1.
The condensate line must be trapped a minimum of
1.0” as shown in the diagram. The condensate line
should be pitched away from the unit a minimum
of 1/4” per foot. The condensate line from the unit
drain connection to the P-trap should be sloped
downward. For more information on installing EZ-
Trap, see installation sheet that comes with the EZ-
Trap Kit. Always install the air vent after the trap.
Figure 1: Typical Condensation Drain Connection
Cleaning Holes (Capped)
1/4" per foot
Vent
Front of Unit
Unit Condensate
Drain Outlet
1.0”
Note: Connect the drain through the trap to the
condensation drain system in conformance to local
plumbing codes.
Part Number Description
ACDT1A - EZ-Trap ¾” Kit
ACDT2A - EZ-Trap 1” Kit (customer must provide a 1”
S x 3/4” Mips adapter)
Typical Pressurized Flow Center Installation
The ow centers are insulated and contain all
ushing and circulation connections for residential
and light commercial earth loops that require a
ow rate of no more than 20 gpm. 1-1/4” fusion x
1” double o-ring ttings (AGA6PES) are furnished
with the double O-ring ow centers for HDPE loop
connections. Various ttings are available for the
double O-ring ow centers for different connections.
A typical installation will require the use of a hose
kit. Matching hose kits come with double O-ring
adapters to transition to 1” hose connection.
Note: Threaded ow centers all have 1” FPT
connections. Matching hose kits come with the
AGBA55 adapter needed to transition from 1” FPT to
1” hose.
Typical Non-Pressurized Flow Center Installation
Standing column ow centers are designed to
operate with no static pressure on the earth loop.
The design is such that the column of water in the
ow center is enough pressure to prime the pumps
for proper system operation and pump reliability.
The ow center does have a cap/seal, so it is still a
closed system, where the uid will not evaporate. If
the earth loop header is external, the loop system
will still need to be ushed with a purge cart. The
non-pressurized ow center needs to be isolated
from the ush cart during ushing because the ow
center is not designed to handle pressure. Since this
is a non-pressurized system, the interior piping can
incorporate all the above-mentioned pipe material
options (see interior piping), including PVC. The ow
center can be mounted to the wall with the included
bracket or mounted on the oor as long as it is
properly supported.