Water Piping - York YAZS022 Installation Manual

AFFINITY INDOOR SPLIT SERIES INSTALLATION MANUAL
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 on residential units are swivel piping
fittings (see Figure 3) that accept 1 in. male pipe threads (MPT).
The swivel connector has a rubber gasket seal similar to a rubber
hose gasket, which when mated to the flush end of any 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 waterline. To make the
connection to a ground loop system, mate the brass connector
(supplied in CK4L connector kit) 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. Tighten the connectors by hand, then gently snug the
fitting with pliers to provide a leak-proof joint. When connecting to
an open loop (ground water) system, thread the 1 in. MPT fitting
(SCH80 PVC or copper) into the swivel connector and tighten in
the same manner as noted above. The open and closed loop piping
system should include pressure/temperature taps for serviceability.
Never use flexible hoses smaller than 1 in. inside diameter on the
unit. Limit hose length to 10 ft. per connection. Check carefully for
water leaks.
Figure 3: Swivel Connections
(Residential Units)
Stainless
Steel
Snap Ring
Gasket
Material
8
Locking
Ring
Gasket
Support
Sleeve