Uponor AquaPort XP0300100 User manual

Uponor AquaPort™
Installation and Operation Manual
Maximize domestic hot water hygiene and hydronic heating efficiencies

Uponor AquaPort™ Installation and Operation Manual
is published by
Uponor Inc.
5925 148th Street West
Apple Valley, MN 55124
T800.321.4739
F 952.891.2008
uponor.com
Uponor Ltd.
6510 Kennedy Road
Mississauga, ON L5T 2X4
T 888.594.7726
F 800.638.9517
uponor.com
© 2023 Uponor
All rights reserved
First edition
First printing May 2021
Printed in the United States of America
2 l Uponor AquaPort Installation and Operation Manual

Table of contents
Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Chapter 1: AquaPort overview . . . . . . . . . . . . . . . . . . . . . . .5
Chapter 2: Applications . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Chapter 3: Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Chapter 4: Installation and setup . . . . . . . . . . . . . . . . . . . . 12
Chapter 5: Environmental operating conditions . . . . . . . . . . 17
Chapter 6: Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . 18
Chapter 7: Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Appendix A: Technical specifications . . . . . . . . . . . . . . . . . 20
uponor.com l 3

Foreword
Uponor is dedicated to partnering with professionals to
create better human environments. As the leading North
American manufacturer of Engel-method crosslinked
polyethylene (PEX-a) piping, Uponor provides PEX and
PP-RCT polymer solutions that feature quality products
combined with expert technical support to design,
install, and operate high-performing piping systems.
As part of this technical support, Uponor publishes
the AquaPort Installation and Operation Manual for
contractors, engineers, architects, building officials,
building managers, and other individuals interested in
domestic water and hydronic heating systems.
Uponor has made reasonable efforts to collect, prepare,
and provide quality information and material in this
manual. However, system enhancements may result in
modification of features or specifications without notice.
Note that Uponor is not liable for installation practices
that deviate from this manual or are not acceptable
practices within the mechanical trades, codes, or
standards of practices. If there are differences between
Uponor recommendations and local code, always
follow the more-restrictive criteria. For example, where
Uponor’s recommendations are more restrictive than
the local code, follow the Uponor recommendations to
ensure the product performs as expected and remains
covered under warranty.
It is the installer’s responsibility to ensure the product,
design, and intended installation are acceptable to
the local authority having jurisdiction (AHJ). Please
direct any questions regarding the suitability of
an application to Uponor Technical Services at
888.594.7726 or [email protected].
Note: Throughout this document, the term “unit” refers
to an Uponor AquaPort.
Important safety information
To reduce the risk of injury, it is very important to read
and understand this manual before beginning any
work. In addition, read all product safety warnings and
operator manuals for the Milwaukee® ProPEX® expansion
tools, PEX pipe cutters, and other installation tools to
operate those tools safely and correctly. Additionally,
it is important to always wear safety goggles or safety
glasses with side shields when performing work.
Avoid risk of burns and scalds
The surfaces of individual components and the water
escaping from the tap can become very hot. Do not
touch hot surfaces, and carefully check the water
temperature with a measuring device before touching it.
Qualified personnel
Only qualified personnel should install and operate
the Uponor AquaPort system following all local, state,
and national guidelines as well as manufacturer’s
design recommendations. Only qualified technicians
should perform routine maintenance or service
work. Additionally, only personnel with special
knowledge and experience in hydraulics may work
on hydraulic equipment.
Be sure to observe all instructions directly attached
to the device.
Intended use
The Uponor AquaPort is intended for domestic water
and hydronic heating applications only. Any other
or additional use is improper. Uponor is not liable for
any damage resulting from improper application
or use. Intended use also includes observance of all
applicable documents and compliance with inspection
and maintenance conditions. To avoid risk of injury or
damage to personal property, do not exceed maximum
operating values of the unit, and never remove
individual parts (or other installed components)
while the system is still under pressure.
Replacement parts
Unauthorized components as well as replacement
parts not tested with the system can damage the unit.
Uponor is not liable for installation of non-approved
components or spare and wear parts, as well as
unauthorized modifications and conversions of the unit
that can restrict the function, safety, and warranty.
Installation documentation
Use the label included on the inside of the access cover
to record any changes to the installation settings.
Settings can be easily transferred to a new AquaPort if a
replacement is needed.
Avoid freeze damage
After filling the unit with water, ensure the fluids on both
the domestic and hydronic (heating) side do not freeze.
Leaks
If leaks occur, close all shutoff valves immediately and
have a professional make repairs.
4 l Uponor AquaPort Installation and Operation Manual

Figure 1-1: XP0300100 Figure 1-2: XP0525180
Chapter 1
AquaPort overview
The Uponor AquaPort is a self-contained
unit that converts a building’s hydronic
heating supply using a double-wall heat
exchanger to provide the domestic
hot-water (DHW) needs to the units or
living space. The internal components
will control to a set water temperature
based on the DHW demand.
Uponor offers two AquaPort models for
use in various commercial applications,
such as multifamily complexes and
hospitality buildings.
XP0300100 XP0525180
Capacity 100,000 BTU/hr
(29.3 kW)
180,000 Btu/hr
(52.7 kW)
Maximum pressure 125 psi (8.6 bar)
Maximum temperature 180°F (82°C)
DHW temperature range 95°F-158°F (35°C-70°C)
Width 14.5" (368 mm)
Height 25.6" (650 mm)
Depth 5.4" (137 mm)
Weight 47 lbs. (21.3 kg) 57 lbs. (25.9 kg)
Connections 4 x ¾" FNPT
Table 1-1: Product specifications (nominal values)
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Fan coil
unit
DCW DHW HWR
DHR HWS
Fixture
Fan coil
unit
Fixture
Uponor
AquaPort
DCW HWR
HWS
Figure 1-3: Traditional building design
Figure 1-4: Uponor AquaPorts building design
Features and benefits
Boiler energy efficiency
The design of the AquaPort, along with the heat exchanger
selection, returns the lowest water temperature possible.
This enables the equipment
to reach its maximum-rated efficiency.
System energy efficiency
AquaPorts reduce the required amount of DHW and DHW
recirculation lines, eliminating the standby
losses of centralized domestic systems and reducing
energy costs.
Repeatable, simple installation
Regardless of model, Uponor AquaPorts install the
same way. This makes it is easy to create a repeatable,
consistent installation to improve efficiencies and
help meet project schedules.
Improved first costs
Installing Uponor AquaPorts reduces the number
of service pipes necessary in conventional systems
from five to three. This results in fewer supports,
fire penetrations, insulation, and accessories,
which save money on the overall project costs.
Refer to Figures 1-3 and 1-4 for examples of a traditional
building design and a design with Uponor AquaPorts to
illustrate this concept.
6 l Uponor AquaPort Installation and Operation Manual

Performance
Uponor AquaPorts help improve building systems’
performance in the areas of hot-water delivery
times, low-flow conditions for DHW, heat exchanger
performance, water consumption, anti-scalding,
maintenance, and serviceability. Because AquaPorts
feature a high level of controllability, they can be
customized to the requirements of the building and
its occupants.
Hygiene and water quality
Decentralized systems using Uponor AquaPorts offer
several health and safety benefits over centralized
systems, including:
• Eliminating more than 50% of the total DHW volume
in the building for less piping and less chance of
stagnation
• Eliminating DHW recirculation systems entirely
• Significantly reducing the amount of piping,
potentially minimizing the requirements for a
domestic system disinfectant strategy with
temperature and/or chemicals
• Increasing water velocity, minimizing bacterial growth,
minimizing water consumption, and improving
hot-water delivery times due to smaller pipe sizes
downstream of the AquaPorts
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Chapter 2
Applications
Unit piping
Important! To assist with proper performance, install
the AquaPort as the first connection off the domestic
cold-water (DCW) supply line or riser that feeds the
room or unit. This installation will provide the highest
flow and pressure for hot water. Be sure to verify this
piping configuration prior to the drywall installation.
Figure 2-1: Correct installation
Figure 2-2: Incorrect installation
Figure 2-3: Typical bathroom configuration
Figure 2-4: Typical bathroom configuration (overhead)
Fixture Fixture
DCW supply
Uponor
AquaPort
Fixture
Fixture
DCW supply
Uponor
AquaPort
Fixture Fixture
DCW supply
Uponor
AquaPort
Fixture
Fixture
DCW supply
Uponor
AquaPort
Heat-transfer unit (HTU)
AquaPort
HTU
Riser
AquaPort
AquaPort Riser
HTUHTU
Figure 2-5: Typical back-to-back bathroom units
8 l Uponor AquaPort Installation and Operation Manual

Chapter 3
Components
This section details and describes all the main components in the Uponor AquaPort.
AquaPort
XP0300100 and XP0525180
Proportional control valve
Air vent
Air vent
Double-wall heat exchanger
Purge/drain valves
DHW controller
Strainer
Strainer
Hydronic flow regulator
Temperature bypass valve
Flow-restrictor disc (optional)
Domestic hot water (DHW)
Shutoff valves
Domestic cold water (DCW)
Hydronic supply (HWS)
Hydronic return (HWR)
1
10
10
2
6
8
3
3
4
5
7
D
C
B
A
9
Figure 3-1: AquaPort components
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1Double-wall heat exchanger
The double-wall heat exchanger separates the
DHW from the hydronic heating system to meet NSF
requirements and provide high thermal efficiency
and heat transfer using a counter-flow design
(see Figure 3-2). The heat exchanger is sized
specifically to provide the lowest-temperature return
water possible to the heat source for greater system
efficiency.
On the domestic side, the design of the heat exchanger
ensures maximum delivery pressures to the fixture(s).
The volume of water allowed to pass through the
heat exchanger is proportional to the demand for
DHW. The AquaPort includes a “syphon” feature that
allows energy to drain from the heat exchanger. This
lowers the temperature and effectively reduces scale
build up. Refer to Appendix A for the heat exchanger
specifications.
Figure 3-2: Counter-flow design of heat exchanger
2Proportional control valve
The proportional control valve provides a flow of
hydronic hot water in proportion to the required
DHW demand. When a faucet is opened (or similar
domestic-water demand), the proportional control
valve opens, allowing hydronic heating water to flow
through the heat exchanger and heat the domestic
water to the desired setpoint. The proportional control
valve regulates the flow based on fixture demand and
ensures that the heat exchanger is only heated when
there is a domestic-water demand. The valve is fully
mechanical and factory set, requiring no additional
controls, electronics, or adjustments. ASSE LEC 2010
governs cross-contamination mitigation between the
domestic and hydronic water.
The device consists of the following components:
• A single DCW supply inlet and outlet
• A single hydronic supply inlet and outlet
• A means of dynamic flow control
• An atmospheric vent
• Two sets of three dynamic seals between the
potable and hydronic flow parts
Proportional control valve
Inlet and outlet connections ¾" ISO 228
Minimum flow rate – potable flow path 0.13 gpm (0.5 l/min)
Maximum flow rate – potable flow path 9.0 gpm (34 l/min)
Minimum flow rate – hydronic flow path 0.13 gpm (0.5 l/min)
Maximum flow rate – hydronic flow path 9.0 gpm (34 l/min)
Maximum operating temperature 195°F (90°C)
Maximum static pressure, potable and
hydronic 180 psi (1,241 kPa)
Table 3-1: Proportional control valve specifications
3Strainer
Both the domestic and hydronic loops feature a
0.5 mm
stainless-steel mesh strainer to keep debris
from entering the more sensitive components, such
as the heat exchanger and proportional control
valve. To clean or replace a strainer, first shut off and
depressurize the AquaPort. Then, remove the cap
with a 6 mm hex socket.
4Hydronic flow regulator
The hydronic flow regulator adjusts the heat transfer
for the DHW temperature. Use a 4 mm hex key to turn
the adjustment cap clockwise to increase hydronic flow
and increase the domestic-water temperature. Turn the
adjustment cap counterclockwise to decrease hydronic
flow and decrease the domestic-water temperature.
Uponor recommends using single, full-turn adjustments
for best results. If it is not possible to achieve the desired
result after increasing or decreasing the adjustment,
Uponor recommends resetting the hydronic flow
regulator to the factory setting (10 turns from fully
open or fully closed).
Figure 3-3: Adjustment cap
Hydronic flow regulator
Adjustment range 0-20 turns
Factory setting 10 turns
Table 3-2: Hydronic flow regulator settings
Reduced hydronic
flow rate
Increased
hydronic
flow rate
10 l Uponor AquaPort Installation and Operation Manual

5Temperature bypass valve
This valve allows a small flow of hydronic water to
circulate in the unit. This keeps the heating water at
the device hot for faster hot-water delivery without
wasting energy.
Figure 3-4: Temperature bypass valve
6DHW controller
Installed on the hydronic loop, this valve sets the
temperature of the DHW leaving the heat exchanger
and controls the flow of the hydronic water loop in order
to set a maximum temperature value.
DHW controller
Setting 1 2 3 4 5 6 7 8
Water temp. (°F) 95 104 113 122 131 140 149 158
Water temp. (°C) 35 40 45 50 55 60 65 70
Table 3-3: DHW controller settings
Figure 3-5: DHW controller
7Purge/drain valves
Located on the inlet and outlet valves of the hydronic
loop, these offer a convenient method for purging the
hydronic loop.
Figure 3-6: Purge/drain valves
8Flow-restrictor disc (optional)
Used on the domestic inlet loop, the flow-restrictor disc
controls the flow of cold water to the heat exchanger
to ensure the AquaPort does not over deliver the DHW.
This disc does not come installed on the AquaPort but is
included in the parts bag. It should be installed only if the
DHW does not reach the proper setpoint (see Chapter 4).
Figure 3-7: Flow-restrictor disc
9Shutoff valves
Located on both the hydronic and domestic loops, these
inlet and outlet valves allow for convenient servicing or
isolation of the AquaPort.
Figure 3-8: Shutoff valves
10 Air vents
The AquaPort features two manual air vents that can be
opened during system fill, vent, and purge to assist with
eliminating trapped air.
Figure 3-9: Air vent
Figure 3-10: Air vent
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Chapter 4
Installation and setup
1
A B C D
6
4
10
69
3
2
5
7
8
5
Legend:
1
.Double-wall heat exchanger
2. Proportional control valve
3. Flow-restrictor disc
4. Purge/drain valve
5. Air vent
6. Strainer
7. Temperature bypass valve
8. DHW controller
9. Hydronic flow regulator
10. Shutoff/isolation valve
A. Domestic hot water (DHW)
B. Domestic cold water (DCW)
C. Hydronic supply (HWS)
D. Hydronic return (HWR)
E. Capillary line
4
Refer to the following instructions for the proper
installation and setup of an Uponor AquaPort. Always
follow local code or Uponor recommendations,
whichever is more stringent.
Below is a schematic of the Uponor AquaPort. Be sure to
reference this drawing when performing the installation.
Figure 4-1: Uponor AquaPort schematic
Required installation tools and hardware
• 10 mm socket
• 4" (100 mm) socket extension
• T20 Torx® Bit
• (2) adjustable channel locks and/or adjustable
wrenches
• ¼" drill bit (if not using self-tapping screws)
Service
• 4 mm hex key (for the hydronic flow regulator)
Figure 4-2: AquaPort components
12 l Uponor AquaPort Installation and Operation Manual

Installation preparation
Refer to the following instructions to prepare the
AquaPort for installation.
1. Remove the AquaPort from its packaging.
2. Ensure you have all of the following parts required
for installation. If you are missing any parts, or if
any parts are damaged or broken, do not attempt
to install the product. Contact Uponor Customer
Service at 888.594.7726, and submit an Uponor RMA.
• AquaPort
• Trim/finish ring
• Cover panel
• Flow-restrictor disc package
• Connection gaskets
• (4) self-tapping screws, T20
• (2) strainer screens, 0.5 mm
Remove AquaPort from cabinet
Refer to Figure 4-3 and the following instructions to
remove the AquaPort from the cabinet.
1. Remove the door.
2. Remove the trim ring by loosening the (4) wing nuts
on the side panel of the cabinet.
3. Remove the (4) 10 mm nuts that secure the back
plate to the cabinet.
4. Store parts for later assembly.
Figure 4-3: Separate the back plate from the cabinet
Mount the in-wall cabinet
Refer to Figure 4-4 and the steps below to mount the
in-wall cabinet.
1. Prior to mounting the in-wall cabinet, check the
fitting connections, and tighten any nuts that may
have loosened during shipping.
2. Mount the in-wall cabinet between the studs and
fasten on each side with the enclosed screws.
Note: Do not close the ventilation openings on the top
of the AquaPort cabinet. These must remain open to
ensure sufficient airflow through the cabinet.
Figure 4-4: Mount the in-wall cabinet
Mount the AquaPort
Refer to Figure 4-5 and the steps below to mount
the AquaPort.
1. After securely installing the cabinet, mount the
AquaPort onto the back of the cabinet.
2. Align the openings in the AquaPort back plate with the
threaded studs on the back of the cabinet.
3. Thread the 10 mm nuts (removed previously)
onto the threads and tighten.
4. Remove all protective plugs from fitting connections.
Figure 4-5: Mount the Uponor AquaPort inside
the cabinet
uponor.com l 13

Make pipe and fitting connections
Refer to the following steps for making the pipe
and fitting connections.
1. Apply Teflon® tape or thread sealant on the
fitting threads.
2. Install the fitting(s) into the appropriate ball valve
connections and tighten. Use an adjustable wrench
on the valve body when tightening the fitting(s).
3. Connect the Uponor PEX pipes to the fittings
using a Milwaukee® M12™ ProPEX Expander Tool.
4. Connect the DHW A, DCW B, hydronic supply C,
and hydronic return Dlines using the appropriate
¾" male threaded adapters.
5. After making all connections, perform a pressure
test according to local code.
6. Insulate the piping with the proper thermal insulation
according to local, state, and national regulations.
Cover with drywall
After completing the rough-in installation, cover
with drywall.
Figure 4-6: Cover with drywall
Install trim and door
Refer to Figure 4-7 and the steps below to install
the trim and door.
1. Insert the tabs on the trim inside the cabinet.
2. Align the tabs with the threaded studs on the
sides of the AquaPort cabinet.
3. Gently apply pressure until the trim frame is
tight to the finished surface.
4. Tighten the wing nuts.
5. Install the door.
Figure 4-7: Mount frame and door
14 l Uponor AquaPort Installation and Operation Manual

Adding a flow-restrictor disc
The AquaPort comes standard from the factory without
the flow-restrictor disc installed. If it becomes necessary
to reduce the DCW flow to the heat exchanger to ensure
the DHW does not exceed the heat exchanger limits, a
flow-restrictor disc can be installed.
The disc is located in the “S-connection” between the
cold-water connection of the proportional control valve
and the cold-water strainer (refer to callout 8in
Figure 3-1). Note that using this disc is optional and will
increase the pressure drop and lower the flow of DHW
when used.
Refer to Figures 4-8 and 4-9 along with the steps below
to install the flow-restrictor disc.
Important! The AquaPort comes with the correct
flow-restrictor disc for the model.
• Blue disc is for the XP0300100.
• Black disc is for the XP0525185.
Figure 4-8: Black and blue flow-restrictor discs
Refer to Figure 4-9 and the steps below to install the
flow-restrictor disc.
1. Remove the “S” bend section below the proportional
control valve.
2. Remove the flow-restrictor gasket.
3. Snap the flow-restrictor disc into the flow-restrictor
holder (note the direction of the flow-restrictor disc).
4. Install the flow-restrictor holder with the flow-
restrictor disc below the proportional control valve.
5. Reinstall the “S” bend section below the proportional
control valve.
6. Record the installation of the flow-restrictor
disc into the Installation Record for the device
(see Figure 4-10 on following page).
Figure 4-9: Installing the flow-restrictor disc
Filling the AquaPort
Filling the hydronic loop
Caution: Take care when opening service valves
as the water temperature may cause injury.
Before filling the unit, thoroughly flush the entire heating
system and the domestic heating system. Also, to
properly purge the hydronic side of the heat exchanger,
open the hot-water fixture(s) and ensure water is
flowing (temperature independent).
1. Connect a suitable fill device to the inlet valve
drain/fill connections on the hot-water supply line.
Note: The heating system pressure and fill can be
used for purging, if available.
2. Connect a suitable drain device to the outlet
drain/fill connection on the hot-water return line.
3. Fill the device. Let the hydronic water run (or purge)
out of the device and into a suitable container or
available drain.
4. Close the hydronic return valve, and open the other
fill and drain valve.
5. While water is flowing through the device, open the
vent located at the top of the hydronic loop.
6. Continue to run water through the device until the
vent stops releasing air and a solid stream of water
flows from the vent.
7. Open the hot-water side of the fixtures that the
AquaPort supplies.
Important! The proportional control valve will
NOT allow hydronic heating water to flow through
the heat exchanger without DHW flow.
8. Once all air is eliminated and there is a solid stream
of fluid with no air bubbles, close all vents and drain
valves and pressurize to system operating pressure.
Filling the domestic loop
Open the hot and cold fixtures and devices and allow
water to flow to vent off any trapped air. Close all
fixtures once the air is vented and a clear, solid stream
of water is present.
Important! Uponor recommends removing and
cleaning the strainers after cleaning and flushing the
heating system and prior to starting normal operation.
“S” bend with strainer
Flow-restrictor disc
Flow-restrictor disc
Flow-restrictor gasket
Flow direction
uponor.com l 15

Installation record
Uponor recommends documenting installation details and any adjustments needed to deliver the performance
required. Refer to Figure 4-10 to record the AquaPort installation data and settings.
Note: This table is included as a label on the inside cover of the AquaPort for recording installation settings.
AquaPort installation data and settings
Date:
Model: qXP0300100 qXP0525180 Serial number:
Component settings Setting range Factory default Installed setting
Temperature bypass valve – see Figure 3-1 5 95 - 140°F
35 - 60°C
113°F
45°C
Hydronic flow regulator – see Figure 3-1 4 0 - 20 turns 10 turns
DHW controller – see Figure 3-1 6 Dial settings
1 - 8
95 - 158°F
35 - 70°C
Dial setting
6
140°F
60°C
Dial
setting 1 2 3 4 5 6 7 8
Water
temp. 95°F
35°C
104°F
40°C
113°F
45°C
122°F
50°C
131°F
55°C
140°F
60°C
149°F
65°C
158°F
70°C
Flow-restrictor disc – see Figure 3-1 8
Blue disc
(XP0300100)
Not installed
Black disc
(XP0525180)
Installerʼs signature Printed name Company name
Figure 4-10: AquaPort installation data and settings
16 l Uponor AquaPort Installation and Operation Manual

Chapter 5
Environmental operating conditions
Water analysis and
water quality
Uponor recommends a water
analysis because corrosion is a
very complex process influenced
by many different components.
Corrosion
The soldered-plate heat exchanger
features embossed stainless-steel
plates, and the heat exchangers
in the heat-interface units feature
copper-brazed stainless-steel
plates. Before using this product,
the building services engineer or the
installation contractor must address
corrosion protection and scale
formation according to local, state,
and national regulations, in addition
to considerations from the current
drinking-water analysis.
This includes:
• Material selection
• Consideration of corrosion-related
change in drinking-water quality
• Implementation of the installation
• Consideration of the expected
operating conditions
• Refer to Table 5-1 for the
maximum limit requirements
for water constituents and
characteristic values.
Notes
• Sulfates and nitrates are inhibitors
for pitting corrosion caused
by chlorides in pH-neutral
environments.
• In general, a low-pH value
(below 6) increases corrosion
risk; a high-pH value (above 7.5)
decreases the corrosion risk.
• Ferric ion (FE3+) and manganese
(IV) ion (Mn4+) are strong
oxidants and may increase
the risk for localized corrosion
on stainless steel.
• Silicon dioxide (SiO2) above 150
ppm increases the risk of scaling.
• Electrical conductivity of more
than 500 µS/cm might cause
corrosion on copper materials,
possibly damaging the copper
solder in the heat exchangers.
Disinfection strategies
Any disinfection strategies for the
AquaPorts should stay within the
values in Table 5-1 and not exceed
the maximum temperature ratings
of the unit.
When performing disinfection
strategies on the building's
piping network, it is important to
follow the manufacturer's
recommendations for each material
in the domestic water and hydronic
heating system. It remains the
responsibility of the facility
manager, water-management
contractor, and end user to
maintain system health and to
ensure compatibility and
effectiveness of the disinfection
treatment with the entirety of the
materials in the system. For
questions, contact Uponor Technical
Services prior to initiating any
disinfection procedures.
Acceptable operational water quality values
Ingredient Value Unit Exposure time limit
Alkalinity bicarbonate (HCO3) 70-300 mg/l or ppm -
Sulfate (SO42-) < 70 mg/l or ppm -
Bicarbonate (HCO3-)/sulfate (SO42-) > 1 mg/l or ppm -
Electrical conductivity 10-500 µS/cm -
pH 7.5 - 9.0 mg/l or ppm -
Ammonium (NH4+) < 2 mg/l or ppm < 24 h
Chlorides (Cl-) < 100 mg/l or ppm -
Free chlorine (Cl2) < 1 mg/l or ppm Within 5 hrs.
Hydrogen sulfide (H2S) < 0.05 mg/l or ppm -
Free (aggressive) carbon dioxide (CO2) < 5 mg/l or ppm -
Degree of general hardness (°dH) 4.0-8.5 °dH -
1°dh = 21.8 mg/l HCO3(hydrogen carbonate) 87.2-185.3 mg/l -
Nitrate (NO3-) < 100 mg/l or ppm -
Iron (Fe) < 0.2 mg/l or ppm -
Aluminum (Al) < 0.2 mg/l or ppm -
Manganese (Mn) < 0.1 mg/l or ppm -
Table 5-1: Acceptable operational water quality values
uponor.com l 17

Chapter 6
Troubleshooting
Refer to the table below for troubleshooting guidelines.
Issue Cause Solution
Boiler
DHW delivery
Buffer tank temperature too low Buffer tank temperature must be 10-20°F (5-10°C)
above hot-water setpoint.
Hydronic loop pump setting not correct Adjust hydronic loop pump to deliver
constant pressure
Pump capacity too low Check pump capacity
Hydronic loop control (e.g., modulating valve,
etc.) function incorrect Adjust hydronic loop control settings or logic
Adjustment hydronic loop control defective Check hydronic loop control settings or logic
Air in the buffer tank Vent or purge the buffer tank
Cold-water pressure too high or low Ensure cold-water pressure at AquaPort
min. 29 psi (2 bar); max. 59 psi (4 bar)
Uponor AquaPort
Warm water
temperature
too low
or alternating
Dirt trap in primary flow pipe dirty • Clean dirt trap in primary flow pipe
• Clean dirt trap in cold-water inlet
Hydronic flow too low Use the hydronic flow regulator to increase
hydronic flow
Air in the system Vent the system while fixture(s) are open
and flowing
Too little heating flow rate flows through
the heat exchanger
Check flow rate using a heat flow meter with
all hot-water fixtures open and flowing
Heat exchanger is dirty or plugged Replace AquaPort
DHW controller setting too low or not
functioning properly
• Check DHW controller setting and adjust
• Replace AquaPort if adjustment does not
remedy the issue
Proportional control valve not
functioning properly Replace AquaPort
Wait time
for hot water
too long
Temperature setting on temperature bypass
valve too low Increase setting on temperature bypass valve
Capillary pipe on temperature bypass
valve plugged Replace AquaPort
Noise
Noise in AquaPort Pipe clamps are over tightened Loosen pipe clamps
Whistling while
DCW running
Cold-water strainer clogged Clean strainer
Flow-restrictor disc obstructed Clean flow-restrictor disc
Noise from
proportional
control valve
Noise from proportional control valve Replace AquaPort
Table 6-1: Troubleshooting guidelines
18 l Uponor AquaPort Installation and Operation Manual

Chapter 7
Maintenance
Uponor recommends the following minimum
maintenance schedule to ensure high performance
and efficiency.
Maintenance Schedule
Cycle shutoff valves (close/open)
Figure 3-1 9
Biannually
Clean strainers – Figure 3-1 3 Annually
Inspect proportional control valve
for leakage at inspection ports
Figure 3-1 2
Annually
Table 7-1: Maintenance schedule
Service parts
Uponor recommends stocking or storing a number
of units for quick replacement, if an issue arises.
To replace, simply close the internal valves, loosen
the swivel connections on the valve, and remove
the four 10 mm nuts that attach the main components
to the cabinet.
Note that if an AquaPort needs replacement within
the warranty period, return the damaged or faulty unit
(without the cabinet, cover, and frame) to Uponor for
repair or replacement through the Return Materials
Authorization (RMA) process.
Product category Affected products Warranty term
Stationary parts Heat exchanger, pipe, and compression fitting connections 10 years
Moving parts Air vents, DHW controller, proportional control valve, hydronic flow regulator,
temperature bypass valve, isolation valves, and purge drain
2 years
Table 7-2: Warranty terms
Warranty information
Subject to the terms and conditions of this Limited
Warranty (“Warranty”), Uponor, Inc. (“Uponor”)
warrants to the owner of the applicable real property
in the United States that the Uponor AquaPort
(“Product”) shall be free from defects in material
and workmanship, under normal conditions of use
and normal operating conditions.
Term
The Uponor AquaPort warranty shall commence on the
date the product was delivered to the end user
for installation. The term for the products listed in
the product category column below will be in effect
for the number of years shown in the warranty term
column below.
uponor.com l 19

Appendix A
Technical specifications
Domestic-water fitting material CW 724 R, C69300
Hydronic fitting material CW 617 N, C37700
Double-wall heat exchanger Plates stainless steel ANSI 316, brazed seam copper 99.9%
Piping Stainless steel 1.4101/ANSI 316
Shutoff valves CW 511 L, C27453
Proportional control valve ASSE LEC 2010, NSF 61
XP0300100 performance (nominal)
Temperature at entry hydronic 140°F/60°C
Temperature at entry domestic 50°F/10°C
Temperature at outlet hydronic 77°F/25°C
Temperature at outlet domestic 120°F/49°C
Flow hydronic 3.4 gpm/12.9 l/min
Flow domestic 3.0 gpm/11.4 l/min
XP0525180 performance (nominal)
Temperature at entry hydronic 140°F/60°C
Temperature at entry domestic 50°F/10°C
Temperature at outlet hydronic 75°F/24°C
Temperature at outlet domestic 122°F/50°C
Flow hydronic 5.95 gpm/ 22.5 l/min
Flow domestic 5.25 gpm/19.9 l/min
Maximum operational pressure
Tap water side 125 psi/8.6 bar
Hydronic side 125 psi/8.6 bar
Maximum operation temperature 180°F/82°C
Connection (4) ¾" FNPT
XP0300100 weight including in-wall cabinet 47 lbs./21.3 kg
XP0525180 weight including in-wall cabinet 61.5 lbs./27.9 kg
Table A-1: Specifications
20 l Uponor AquaPort Installation and Operation Manual