GreenRoom™ Boiler Room Accessories by Wilo Pumps

Heating Systems
Cooling Systems
Special features / product benefits
WZC – Zone Relay
4-Zone and 2-Zone Controls
120VAC, +/- 10%
4x Optically Isolated demand inputs
24VAC or dry contact
120VAC 5A zone outputs
8bit 16MHz
WZV – Zone Valve
2-Way Zone Valves
Controls the flow in your hydronic system
Available in ½”, ¾”, and 1” SWT connections
Valve normally closed
2’ Cable included
24 Volt, UL-approved motor
High-quality bronze construction
WXT – Expansion Tanks
Controls system pressure in closed systems
Available in 2.0 & 4.4 Gal. models
½” NPT Connection
Quick and easy Installation
Pre-charged to 12 PSI
Max Working Pressure: 100 PSI
Max Temp: 240°F (116°C)
WAS – Air Scoops
Quietly separates air from your hydronic system
Available in ¾”, 1”, and 1¼” FNPT connections
Tapped for 1/8” air vent and ½” expansion tank
Maintenance free, cast iron construction
WAV – Air Vents
Vents air from hydronic systems
1/8” NPT connection
Max Operating Pressure: 150 PSI
Max Temp: 240°F (116°C)
Easy to service
Solid brass construction