Water Piping - York YAST026 Installation Manual

Water Piping

Residential split units are supplied standard with GeoLink swivel
connections with P.T. ports.
CAUTION: Water piping exposed to outside
temperatures may be subject to freezing.
Water Piping
The proper water flow must be provided to each unit whenever the
unit operates. To assure proper flow, use pressure/temperature
ports to determine the flow rate. These ports should be located at
the supply and return water connections on the unit. The proper
flow rate cannot be accurately set without measuring the water
pressure drop through the refrigerant-to-water heat exchanger.
Closed Loop - Earth coupled Systems
(Outdoor Installations)
Locate unit on an air pad with access hole as shown below. When
mounting on an existing concrete pad, holes must be bored through
to accommodate 1 1/4-inch P.E. pipe with 1/2-inch insulation.
Connecting To Earth Loop
The earth loop trench should be continued directly under the unit
as shown in the Typical Split System Outdoor Installation Using
Closed Loop. Make the connections to optional fittings from the
loop circulator pump(s) and ensure proper backfill to support the
loop pipe during trench settling. All 1 1/4-inch piping should be
insulated with a minimum of 1/2-inch closed cell insulation from
below the ground surface to the loop circulator.
IMPORTANT: A freeze detection thermostat is
installed in the unit to automatically start loop
circulator pump if loop temperature drops below
20°F. Loop freeze detection should also be
maintained to the lowest temperature the insulated
loop may encounter in the case of power failure.
Open Loop (Indoor Installations)
Outdoor Splits can be installed on an open loop system,
but only indoors. All Outdoor Splits are supplied with GeoLink
swivel connectors. The swivel connectors will also accept a 1 in.
O.D. copper pipe (sweat) which can be connected in an open
loop system.
AFFINITY DUAL-CAPACITY OUTDOOR SPLIT SERIES INSTALLATION MANUAL
Flow Center Installation
Flow centers FC1-GL or FC2-GL, as needed, may be internally
mounted on the outdoor split, Two stub tubes with barbs are pre
connected to the coax. Two tubes with brass fittings, to adapt to
the flow center, 2 hoses to connect between the two sets of tubes,
and four hose clamps are included with each outdoor split unit.
The brass adapter fittings have plastic swivel connectors that also
accept 1 in. O.D. copper pipe (sweat).
NOTE: For ease of installation, attach provided hoses to coax first
and then trim to fit to elbows on flow center.
Typical Split System Outdoor Installation Using
Closed Loop
9
Loop Supply
and Return
Piping