McQuay MHC Series, Installation & Maintenance Data, Page: 9 / 36

IM 985-1 / Page 9 of 36
Optional Factory-Installed Motorized & Hand Valve
Assemblies
Console water source heat pumps can be configured
with­factory-installed­motorized­valves .­Valves­
should­be­mounted­on­the­return­water­line .­All­
valve assemblies terminate with 1/2"-NPT threaded
connections­and­will­also­accommodate­factory­supplied­
hose­kits .
Note: ­
Make sure the pipes fit the confines of the
piping compartment of the heat pump unit (Figure
6 & 7).
Figure 6. Typical Motorized Valve Piping
Note: McQuay International offers a wide variety of
piping packages. Consult your local sales rep for
more information.
Left End Piping View
Right End Piping (Back) View
Left End Piping (Back) View
Right End Piping View
When­installing­the­hoses­on­valve­assemblies,­use­
the method as outlined in "Shutoff/Balancing Valve
Piping" on page 8.
Figure 7. Typical Piping Package Configurations
(Left- Hand Unit Piping Connections Shown)
1. Measureflow Device
2. 2-Way Motorized Isolation Valve
3. Air Bleed Vent
4. Supply-Bypass Hand Valve
5. Inlet, Outlet Flexible, Braided-Stainless Steel
Hoses (Field-Installed Accessories)
Note: On left hand piping units, the water supply
connection is at the top location. On right-hand
piping units, the water supply connection is at the
bottom location.
= Field-Installed