York T2GY Installer's Manual page 6

T2GY INSTALLER'S GUIDE
General Installation Information cont.
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.
All source water connections are swivel piping fittings that
accept a 1 in. Male Pipe Thread (MPT) (see Female Locking
Ring illustration). The swivel pipe connector has a rubber
gasket seal similar to a garden hose gasket, which when
mated to the flush end of 1 in. threaded pipe provides a
leak-free seal without the need for thread sealing tape or
compound. Check to ensure that the rubber seal is in the
swivel connector prior to attempting any connection. The
rubber seals are shipped attached to the water line.
To make the connection to a ground loop system, mate
the brass connector (supplied in CK4LI and CK4L-GLI
connector kits) against the rubber gasket in the swivel
connector, and thread the female locking ring onto the
pipe threads, while maintaining the brass connector in the
desired direction (see Female Locking RIng illustration).
Tighten the connectors by hand and then gently snug
the fitting with pliers to provide a leak proof joint. When
connecting to an open loop (ground water) system, thread 1
in. MPT fitting (schedule 80 PVC or copper) into the swivel
connector and tighten in the same manner as noted above.
The open and closed loop piping system must include
pressure/temperature taps for serviceability.
Never use flexible hoses smaller than 1 in. inside diameter on
the unit and limit hose length to 10 ft. per connection. Check
carefully for water leaks.
Female Locking Ring
Stainless
Steel
Snap Ring
Gasket
Material
NOTE: Load side fittings are same type as source.
CAUTION: Water piping exposed to outside
temperature may be subject to freezing.
6
Locking
Ring
Gasket
Support
Sleeve