John Wood Noritz N-069M-DV - Manual (Page 49)

49
11.
Plumbing Applications
Pump Control Signal
See p. 53
(See p. 53)
(See notes for Sizing)
Pump Control Signal
See p. 53
Pump Control signal
See p. 53
Recirculation System
Pump
Fixtures
Cold Water Supply
NORITZ
N-069M-DV
Check
Valve
Hot Water Return
Check Valve
Pressure
Relief
Valve
Hot Water
Shutoff Valve
Drain
R
B
W
Use Honeywell Aquastat
(Model L6006A or L6006C)
Pump
AC120
Aquastat Wiring
105
Neutral
Ground
Live
5
Heating System
Cold Water Supply
NORITZ
N-069M-DV
Check
Valve
Hot Water Return
Pressure
Relief Valve
Hot Water
Shutoff Valve
Drain
Air Scoop
(Optional)
Temp. &
Press. Gauge
(Optional)
Hydronic Heat
Exchanger or
Radiant Heat
Piping
Pressure
Reducing
Valve
(Optional)
Shutoff
Valve
Backflow
Preventer
(Optional)
Boiler Drain Valve
Heating
Controls
Mixing Valve
N-069M-DV
Cold Water Supply
Tempered Potable Hot Water
Hot Water for Heating
If the system requires water
for space heating at a higher
temperature than for other
uses, means such as a mixing
valve shall be provided to
temper the water for the other
uses to help prevent scalding.
For Space Heating Purposes:
Check Valve
Aquastat
(Relay for
Pump
> 85 W)
(Use Aquastat if Unit
Isn't Controlling Pump)
Aquastat
(Use Aquastat if
Unit Isn't Controlling
Pump)
Pump
Pump Control Signal
See p. 53
Expansion Tank
(Install According
to Local Codes)
8-10 Gal.
Storage Tank
(To Alleviate Cold
Water Sandwich)
(See p. 53)
(Install According
to Local Codes)
(Relay for
Pump
> 85 W) (See notes for Sizing)
Expansion
Tank
For Baseboard
Applications:
Please contact
Noritz for
compatibility.
* Size the pump to provide at least 2 GPM through the system at 10 Ft of Head plus
piping losses. Check the maintenance monitors on the unit to make sure the pump
is providing that much flow.
** Make sure that the flow rate is not greater than 4 ft/sec. (3/4”: 5 GPM, 1 1/4”: 13 GPM)
* Size the pump to provide at least 2 GPM through the system at 10 Ft of Head plus
piping losses. Check the maintenance monitors on the unit to make sure the pump
is providing that much flow.
** Make sure that the flow rate is not greater than 4 ft/sec. (3/4”: 5 GPM, 1 1/4”: 13 GPM)
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