Navien NaviCirc Series Manual de usuario
Installation and Operation
Manual
Certified to
NSF / ANSI 372
Note This device is designed
and optimized for use only
on Navien NPE-A water
heaters.
WARNING
All Installations should be done only by a qualied expert and
in accordance with the appropriate Navien manual. Improper
installation of this device may result in serious injury or property
damage.
When Installing the NaviCirc:
●Read these instructions carefully. Failure to comply could
damage the NaviCirc or cause a hazardous condition.
●Check the ratings provided in the instructions and on the
product to make sure the product is suitable for the application.
●Installers must be trained, experienced, and licensed service
technicians.
●Follow local codes for installation and application requirements.
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1. About the NaviCirc 3
1.1 Included Items 3
1.2 Specications 4
1.3 Compatible Products & Pump Requirements 5
1.4 Conguration 6
1.5 Supply Connections 7
2. Application System 8
2.1 NPE-A System 8
2.1.1 Application Guidelines 8
2.1.2 NPE-A System Diagram 12
2.2 Installing the NaviCirc 16
2.2.1 Installing the NaviCirc 17
2.2.2 Leak Check & Air Purge 18
2.3 Securing the NaviCirc to the Wall 19
3. Troubleshooting 20
Contents
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After the installation is complete, verify proper operation of the
NaviCirc by following the instructions provided in this manual.
1. About the NaviCirc
NaviCirc is a circulation device for standard domestic hot water lines
without a recirculation system. It allows domestic hot water lines
and domestic cold water lines to connect to the NaviCirc and pre-
heat hot water lines by circulating hot and cold water through the
NaviCirc. This prevents hot water loss and heating time loss.
To prevent too much hot water from owing into the cold water line,
the NaviCirc includes a feature that automatically blocks circulation
when reaching a temperature of approximately 95°F (35°C).
1.1 Included Items
NaviCirc
(Recirculation Valve)
Installation and Operation
Manual
Anchors and Screws Flexible Hoses (with kit only)
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1.2 Specications
Refer to the following table for product specications.
Items Specications
Product name NaviCirc
Part number PFFW-SXX-001
Water ow rate range 0.53 - 1.06 GPM (2.0 - 4.0 LPM)
Crossover shuto temperature 95℉(35℃)
Water temperature range 41℉to 180℉ (5℃to 82℃)
Ambient temperature range 32 - 122℉ (0 - 50℃)
(Indoor use only)
Storage temperature range 23 - 122℉ (-10 - 50℃)
Max water pressure 150 psi
Installation operation Horizontal
Dimensions (in) 5.62 x 3.93 x 2.19
Weight (lb) 1.10 lb (0.5 kg)
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1.3 Compatible Products & Pump
Requirements
The NaviCirc is most compatible with Navien NPE-A Series water
heaters.
NPE-A models may utilize the built-in pump along with the
appropriate piping to create a hot water recirculation loop. If
the NaviCirc is used on a non-Navien appliance, consult the
manufacturer for compatibility and size the pump with the
following head requirements:
Pump MAX head approx. 15 ft (4.6 m) – 23 ft (7 m)
Note Navien does not guarantee the performance of the
NaviCirc when used on a non-Navien appliance.
CAUTION
If the selected external pump does not meet the recommended
specications provided in this manual, the NaviCirc may not
operate properly.
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1.4 Conguration
Refer to the following diagram for the NaviCirc layout.
Faucet
hot water
connection
Hot water
inlet
connection
Cold water
inlet
connection
Faucet
cold water
connection
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1.5 Supply Connections
Refer to the following table for the NaviCirc supply connection
specications.
A
C D
B
A
C
D
B
Front view Side view
List Connection
AHot water outlet ½” NPS
BCold water outlet ½” NPS
CHot water inlet ½” NPS
DCold water inlet ½” NPS
Dimension (in) 5.62 x 3.93 x 2.19
Supply Connections
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2. Application System
2.1 NPE-A System
2.1.1 Application Guidelines
See the installation guidelines below for additional instructions.
1. Locate the 10-switch set of dipswitches on the front panel and
verify that DIP SW2 is ON for EXTERNAL recirculation.
1 2 3 1 24 5 6 7 8 9 10
ON ON
1-OFF
2-ON
2. On the front panel, press the Power button to turn o the
water heater.
3. Enter the R&D information menu by pressing the Up [+] button
three times, the Down [-] button three times, and then the Up
[+] button four more times.
Note Maximum recirculation pipe lengths:
●100 feet (30 m) equivalent length of ½”copper pipe
●400 feet (120 m) equivalent length of ¾”copper pipe
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4. In the R&D information menu, use the Up [+] or Down [-]
button to move to 2.PAR (Parameter information mode), and
then press the Information button.
No. Mode Display
1 Technical information
2 Parameter information
5. Use the Up [+] and Down [-] buttons to enter Parameter #17
(P.17 – Enable Thermal Bypass Valve).
Item Name Description Display
P17 Enabler thermal
bypass valve
Set thermal bypass
valve operation
(Required Adjustments to the Available Parameters)
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6. Use the Up [+] or Down [-] button to move to adjust the
parameter option to 2. ON.
Range Description Display
1.OFF Thermal bypass valve is disabled.
2. ON Thermal bypass valve is enabled.
Null Setting for S-type models, Panel DIP3
ON, Cascade ON, or AHU is enabled.
Note ●Additional parameters are available to adjust unit
operation for various plumbing systems. Refer to
the NPE Installation & Operation Manual for more
information on these parameters.
Items Description
Pump Cycle
Interval Time
(P.12)
Sets the maximum time that the
internal circulator will operate once a
recirculation cycle has been initiated.
●Setting range: 1 to 120
(in 1-minute increments)
●Default: 20 min
Note
When the optional HotButton
accessory is installed, the maximum
setting value is limited to 5 minutes.
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