Noritz NRCB180DV - Zoned with Pumps

77
18.4 Zoned with Pumps
This drawing is meant to show system piping concept only. Installer is responsible for all equipment & detailing
required by local codes. Refer to page 51 for electrical wiring instructions.
[CN233]
T - T
T/TT/TT/T
T/T
Heating
Return
Heating Supply
ZONE1
Pump
Wiring Diagram
ZONE2
Pump
ZONE3
Pump
ZONE1ZONE2
ZONE CONTROLLER
ZONE3
DHW Supply
DHW Cold Water Supply
Auto Feeder
ZONE 1
PRESSURE
GAUGE
PRESSURE
REDUCING VALVE
ZONE 2 ZONE 3
BACKFLOW
PREVENTER
MAKE UP WATER
BALL VALVE
(TYPICAL)
EXPANSION
TANK
Not to exceed 4 pipe Dia or Max. 12 in. APART
FLOW CHEC
K
VALVE
(TYPICAL)
ZONE PUMP
S
(TYPICAL)
* In case of installing external water feeder.
AIR SEPARATOR
Additional Zone
Recommended Pressure Setting
: 15-30 psi
Optional LWCO
(See on the page 44)
Plumbing Applications