Navien NCB700-2S Plus 42K Installation & Operation Manual page 21

Condensing combi boiler
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2.8.2 Specifications
Refer to the following table for product specifications.
Water flow rate range
Shutoff temperature
Water temperature range
Ambient temperature range
Max water pressure
Installation operation
Dimensions (mm)
Weight (kg)
2.8.3 Installation Requirements
Refer to the following table for installation requirements for a compatible product, water pipes, and external recirculation pump.
Items
Compatible Products
Water Pipes
External Recirculation Pump
2.8.4 Components
The following diagram shows the key components of the NaviCirc.
A
B
D
C
[Front View]
Items
The NaviCirc is most compatible with NCB700 combi boilers.
To use the NaviCirc with other products, an external recirculation pump is required.
When installing the NaviCirc with the NCB700 boiler, activate the Anti-Legionella feature on the
NCB700. For more information, refer to the NCB700 Installation & Operation manual.
Secondary return water pipes are required for use of the NaviCirc.
The maximum length of water pipes (15 mm) used with the NaviCirc is 70 m.
To use the NaviCirc with other products, external recirculation pump is required.
The pump Max head should be between 5–7 m.
CAUTION
If the external recirculation pump does not meet the recommended specifications provided in
this manual, the NaviCirc may not function properly.
B
A
D
C
[Side View]
Specifications
2.0–4.0 LPM
35°C
5–85°C
0–50°C
10 bar
Horizontal or Vertical
142.7 x 99.8 x 55.6
0.5
Descriptions
#
Name
Connection Size
A Hot water outlet
Cold water
B
outlet/Closed
NPS ½"
C Hot water inlet
Cold water
D
inlet/Return
Note
Adapters
with ½" BSP
thread can be
compatible with
the connections.
About the Boiler
21

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