STIEBEL ELTRON WPL 15 A2W Premium User manual

QUICK-START GUIDE
Air-to-water Heat Pump with Integral Tank
» WPL 15/25 A2W Premium & HSBC 300 Integral

2| WPL Quick-start Guide www.stiebel-eltron-usa.com
CONTENTS
Overview
1. Overview ������������������������������������������������������2
1.1 WPL 15 A2W Premium & WPL 25 A2W Premium ���������� 2
1.2 HSBC 300 Integral ����������������������������������������������� 2
1.3 FET������������������������������������������������������������������ 2
1.4 AF PT Outdoor Sensor ������������������������������������������ 2
1.5 System ������������������������������������������������������������� 2
2. Installation����������������������������������������������������2
2.1 Mounting/Placement�������������������������������������������� 2
2.2 Hydronic/DHW Connection������������������������������������� 3
2.3 Electrical����������������������������������������������������������� 4
3. Commissioning �����������������������������������������������5
3.1 Hydronic ����������������������������������������������������������� 5
3.2 DHW ���������������������������������������������������������������� 6
3.3 Electrical����������������������������������������������������������� 6
3.4 WPM Controller �������������������������������������������������� 6
4. Operation �����������������������������������������������������7
4.1 WPM Controller �������������������������������������������������� 7
5. Status & Troubleshooting �����������������������������������7
6. Fahrenheit to Celsius Conversion���������������������������7
1.4 AF PT Outdoor Sensor
The AF PT outdoor sensor is a PT1000 sensor in a housing designed
for mounting on an exterior wall. This sensor is needed for ambi-
ent temperature feedback to the system controller.
1.5 System
The WPL and HSBC work together as an integrated package. It is
a compact means of providing a building’s heating, cooling, and
DHW demands from a single appliance. This requires piping be-
tween the two units, and to the buildings heating/cooling delivery
system. For the DHW system, all that is needed is to run the cold
water connection to the HSBC, and to run the hot water connection
out to the tapping points. Some additional components such as
expansion tanks and air vents are necessary just as in traditional
systems.
2. Installation
2.1 Mounting/Placement
2.1.1 WPL 15/25 A2W Premium
Minimum clearances
≥80″
(≥2000)
≥20″
(≥500)
≥12″
(≥300)
≥40″
(≥1000)
≥32″
(≥800)
D0000028299
f Maintain the minimum clearances to ensure trouble-free op-
eration of the appliance and facilitate maintenance work.
T-support SK1
The recommended method of mounting the WPL is on the SK 1
T-support kit. For detailed installation instructions, consult the SK
1 installation manual.
1. Overview
This document provides the necessary information for installing a
Stiebel Eltron WPL A2W premium heat pump in conjunction with
the HSBC 300 Integral. It includes the most critical details on the
installation process. Some steps have been left out or only briefly
explained to maintain the brevity of this document. For extended
explanation on the components discussed in this document, con-
sult the manual dedicated to the specific component.
1.1 WPL 15 A2W Premium & WPL 25 A2W Premium
The WPL is an air to water monobloc heat pump. The refrigerant
circuit is self-contained within the unit itself. There are two sizes
available: WPL 15 A2W Premium & WPL 25 A2W Premium. These
devices are in the 2 and 4 ton size classes, respectively.
The WPL is capable of heating or cooling a water/glycol mixture
flowing to the unit. There are two water connections on the unit
that must be connected to the HSBC 300 Integral. A 6.75 kW back-
up element is included inside the WPL to supplement the heating
capacity.
1.2 HSBC 300 Integral
The HSBC 300 Integral integrates a system buffer, a DHW tank,
circulation pumps, and system controller into one package. The
buffer is a steel 26 gallon tank and the DHW tank is a 72 gallon
glass-lined tank heated by an indirect coil. The HSBC contains the
necessary pumps and diverter valves to use the WPL heat pump to
heat or cool the buffer tank, and to heat the DHW tank, with the
DHW tank having priority.
1.3 FET
The FET is an optional room thermostat which includes function-
ality for temperature control from within the conditioned space. It
also allows for adjustment of other basic system settings.

Installation
www.stiebel-eltron-usa.com WPL Quick-start Guide | 3
ENGLISH
Note
f Install a ribbon heater when using the T-support.
!
Material losses
Install SK 1 in concrete piles at least 10˝ in diameter.
A
B
D0000050006-a
1
2
3
A Depth of frost line
B 12˝ (300 mm)
1 Foundation/concrete pile
2 T-support
3 Condensate drain with ribbon heater
2.1.2 HSBC 300 Integral
Minimum clearances
10˝
(≥250)
10˝
(≥250)
≥32˝
(≥800)
≥32˝
(≥500)
≥4˝
(≥100)
≥32˝
(≥500)
≥4˝
(≥100)
D0000103389-a
The minimum side clearances can be swapped between left and
right.
2.2 Hydronic/DHW Connection
2.2.1 WPL 15/25 A2W Premium
The WPL has a water inlet and a water outlet connection. These
are 28 mm quick-connect fittings. Adapters are provided with the
WPL to accommodate adapting to 1˝ copper pipe.
D0000035306
2
1
3
4
1 Leaving water port (hot in heating mode)
2 Heating return (cold in heating mode)
3 Drain/fill port
4 Air purge vent
f Solder 1˝ copper pipe to the provided adapter.
f Run the inlet & outlet pipes into the building to the HSBC.
f Insulate the pipe run with insulation at least 1˝ thick.
2.2.2 HSBC 300 Integral
e01
d02
e02
d01
c01
c10
c06
D0000103419-a

Installation
4| WPL Quick-start Guide www.stiebel-eltron-usa.com
Name Type Nominal Size
c01 Cold water inlet Male thread G 1˝ (adapter to 3/4˝ copper incl.)
c06 DHW outlet Male thread G 1˝ (adapter to 3/4˝ copper incl.)
c10 DHW circulation Male thread G ½˝ (adapter to 3/4˝ copper incl.)
d01 Heat pump supply Pipe 1˝ copper
d02 Heat pump return Pipe 1˝ copper
e01 Heating supply Pipe ¾˝ copper
e02 Heating return Pipe ¾˝ copper
The HSBC 300 Integral includes the hydronic & DHW connections
shown above.
The DHW cold and hot connnections have a 1˝ G thread and re-
quires a union sweat adapter (included) for ¾˝ copper pipe. A
connection accessory kit (RBS-SBC Integral) is also available which
repositions the DHW connection point to the top of the HSBC. An
expansion tank must be installed in the DHW system and must be
sized properly for a 72 gallon DHW tank.
System
The most basic installation configuration for the HSBC includes
two pipes run between the HSBC and WPL, two pipes running to
a heating/cooling circuit, and two DHW connections for cold water
in and hot water out.
The pipe between the HSBC and WPL must be 1˝ pipe. Copper pipe
or PEX with an oxygen barrier is also permissible. Venting devices
must be installed to completely eliminate trapped air during com-
missioning. The HSBC contains the circulating pump for this circuit,
as well as a diverting valve to charge the included DHW tank.
The heating circuit pipes connect to the heat emitter. The circulat-
ing pump is included inside the HSBC. The heating circuit should
also have vents at the sites likely to trap air. An expansion tank is
required and should accommodate the full volume of the system.
6
5
43
1
2
1 Heat pump supply
2 Heat pump return
3 Heating supply
4 Heating return
5 Cold water in
6 Hot water out
2.3 Electrical
2.3.1 WPL 15/25 A2W Premium
Note
f Do not wire the sensor cable for the AF PT in parallel
with or in the same conduit as the power cables run
to the WPL. If the AF PT cable is not run separately,
the system will not operate as intended.
The WPL has 3 - 240 V connection terminals, each for a different
purpose.
MCB/fuse rating Assignment Wire size
1x B 20 A (WPL 15 A2W Premium) X3 - Compressor AWG 10
1x B 35A (WPL 25 A2W Premium) X3 - Compressor AWG 8
1x B 30 A X5 - Electric backup element AWG 10
1x B 15 A X4 - Control unit AWG 16
The 30 A / 240 V (X5) circuit for the electric backup is optional,
and can be installed to enable the 6.75 kW element located inside
the WPL.
A shielded 4-wire 18 AWG cable is required for the data bus con-
nection.
BUS
X2
L
H
T
„+“
X5 / DHC X3 / WP X4 / Steuerung
L2 L1L1 L2 L1 L2 L1
ON
-
ERR
L2
3,0 kW L1 L2 PE
3,2 kW L1 L2 PE
6,2 kW L1 L2 L1 L2 PE
L1/L2/PE~240/60
C 32A
L1/L2/PE~240/60
C 16A
L1/L2/PE~240/600
C 20A
X2 X5 X3 X4
D0000037825-a
f Ground the LV lead (X2) by inverting the braided shield over
the cable sheath and clamping it under the ground terminal.
f Then check that the strain relief fittings are working as
intended.
All 240 V circuits running outside require a disconnect switch be
installed in an easily accessible location on the exterior wall near
the heat pump.
2.3.2 HSBC 300 Integral
The HSBC requires connection to the same 15 A / 240 V circuit
as the WPL. We recommend to split the circuit at a junction box
where the circuit can be wired both outside and also to the HSBC.

Commissioning
www.stiebel-eltron-usa.com WPL Quick-start Guide | 5
ENGLISH
15A/240V Circuit
Junction Box HSBC
WPL
Terminal Control voltage Wire size
XD03.1 Power supply - L1,L2, GND AWG 16
1
1
1
2
2
L1
L2
D0000102039-a
2.3.3 AF PT Outdoor Sensor
Note
f Do not wire the sensor cable for the AF PT in parallel
with or in the same conduit as the power cables run
to the WPL. If the AF PT cable is not run separately,
the system will not operate as intended.
An outdoor sensor must be installed on a north or northeast fac-
ing exterior wall. It must be placed at least 98” off of the ground
and at least 39˝ away from windows and doors. It must also not
be installed in direct sunlight, but it should be freely exposed to
the elements.
2.3.4 FET Indoor Thermostat
This device requires a 4-wire AWG 18 connection with shielded
wire, and must be connected to terminal X1.2 on the HSBC.
3. Commissioning
3.1 Hydronic
!
Material losses
The hydronic system must contain at least 25% glycol.
This is necessary to provide adequate freeze protection and to
inhibit corrosion on internal components in the WPL and HSBC.
Note
Air must be completely eliminated from the system during
the commissioning process. The WPL will not operate in
the expect manner if air is not completely eliminated.
Using a purge & fill tee in conjunction with a charging pump is
recommended to aid in filling and eliminating air during commis-
sioning. A purge & fill tee allows for diversion into a fill reservoir
and also to repeatedly build up and release pressure in the system
to dislodge remaining trapped air.
f Fill the system slowly from the lowest point.
f Open air vents during filling to encourage the escape of air.
The HSBC has a fill/drain port on the bottom of the buffer
tank, and the WPL has a fill/drain port as well.
f With the charging pump running, use a valve to intermittent-
ly stop flow and allow for pressure to build up. Release the
pressure and look for air bubbles in the fill reservoir
f Operate the air vent in the WPL, as well as the vent on the
DHW heat exchanger in the HSBC.
D0000103417
1
2
3
1 Air vent valve
2 Vent hose
3 Hose attachment
It is critically important to purge as much air as possible from
the hydronic system. The WPL will not operate as expected if the
system is not sufficiently purged.

Commissioning
6| WPL Quick-start Guide www.stiebel-eltron-usa.com
3.2 DHW
Fill the DHW system from the cold water inlet. Open all down-
stream fixtures to allow for the quick venting of air within the hot
water piping.
3.3 Electrical
!
Material losses
Do not power on the HSBC or the WPL until the system
has been properly filled and purged of air.
f Once the system has been properly filled and purged of air,
power on all circuits wired to the WPL and HSBC. The screen
on the front of the HBSC should illuminate and show the
Stiebel Eltron logo. Once fully booted, you will be prompted
with a few setup prompts.
3.4 WPM Controller
The controller mounted on the front of the HSBC is called the
WPM. Detailed information on this controller can be found in the
manuals specific to the WPM.
Initial setup
OKMENU
D0000064711
WEDNESDAY 12. APR 17 10:23 TIME
OUTSIDE TEMPERATURE
ACTUAL W W TEMPERA-
2 7. 0 ° C
35.0 °C
28.0 °C
ACTUAL RETURN TEMPERA-
ECO MODE
1 32 4
1 Display
2 “MENU” key
3 Touch-Wheel
4 “OK” key
On the first power-up, the WPM will prompt the user to select the
preferred menu language, time, & date.
f Enter the setup information when prompted. When complete,
the main screen of the WPM will be shown.
Heating curve optimization
Based on the design temperature and insulation value of the
building, the user may want to change the parameter HEATING
CURVE RISE.
f Using the following chart, calculate the heating curve value
by finding matching the ambient design temperature on the
x-axis and the heat emitter delivery temperature on the y-ax-
is. Interpolate this point between the closest heating curve
lines on the chart.
1.5
2
1.2
1
0.6
0.4
0.2
2.53
0.8
70
210
190
170
150
130
110
90
70
60
Ambient Temperature (ºF)
Supply Temperature (ºF)
50 40 30 20 10 0 -4
X Outside temperature, °F (°C)
Y Heating circuit 1, heat pump return temperature, °F (°C)
f Enter this number into the parameter HEATING CURVE RISE
by navigating to Settings > Heating > Heating Circuit 1.
If the user prefers a fixed delivery temperature in the buffer tank,
this value can be selected in the menu at Settings > Heating >
Heating Circuit 1. By setting a value in the parameter Fixed Value
Operation, the heating curve will be disabled.
Dual mode operation
With the parameter DUAL MODE TEMP HZG, you can specify the
dual mode temperature of the heat pump. Below this set outside
temperature, the emergency/booster heater may back up the heat
pump if the heating output has not been reached. The electric
emergency/booster heater assumes responsibility for heating de-
mand jointly with the heat pump.
f Enter the temperature where the backup element should
work in conjunction with the heat pump into the parameter
DUAL MODE TEMP HZG by navigating to Settings > Heating >
Electric Reheating.

Operation
www.stiebel-eltron-usa.com WPL Quick-start Guide | 7
ENGLISH
4. Operation
4.1 WPM Controller
The WPM controller contains a few different operating modes. The
modes are fully explained in detail in the WPM controller manual.
The mode most typically used is Comfort Mode. This mode keeps
the DHW tank and the heating circuit at the Comfort temperature.
WEDNESDAY 12. APR 17 10:23 TIME
OUTSIDE TEMPERATURE
ACTUAL WW TEMPERATURE
2 7.0 ° C
35.0 °C
28.0 °C
ACTUAL RETURN TEMPERA-
26�04�01�0292-a
COMFORT MODE
If you want to select another operating mode, use the Touch-
Wheel. This takes you through the list of possible operating modes.
The current choice (list entry) is shown in the shaded selection
field. Setting the WPM to Programmed Operation will allow for
scheduling between the Comfort and Eco temperature setpoints
at different times and days of the week.
5. Status & Troubleshooting
If the WPM is in a major fault state, a notification will be displayed
on the screen. A minor fault that does not affect normal operation
may not be displayed. The fault state of the system can be checked
by navigating to Diagnosis > Heat Pump Status.
!
D0000074017
STANDBY MODE
FAULT
WPM 30007
PLS INFORM SERVICE DEPT
If more than one fault occurs, it is always the most recently oc-
curring fault that is displayed.
Additional operating parameters for the system and the heat pump
can be found by navigating to Info > System and to Info > Heat
Pump > Process Data, respectively.
If you are not able to resolve a problem please contact us toll
free at 800.582.8423. Stiebel Eltron is happy to provide technical
assistance. In most instances, we can resolve the problem over
the phone.
6. Fahrenheit to Celsius Conversion
˚F ˚C
-5 -20.6
0-17.8
5-15.0
10 -12.2
15 -9.4
20 -6.7
25 -3.9
30 -1.1
32 0
35 1.7
40 4.4
˚F ˚C
45 7.2
50 10.0
55 12.8
60 15.6
65 18.3
70 21.1
75 23.9
80 26.7
85 29.4
90 32.2
95 35.0
˚F ˚C
100 37.8
105 40.6
110 43.3
115 46.1
120 48.9
125 51.7
130 54.4
135 57.2
140 60.0
145 62.8
150 65.6

Irrtum und technische Änderungen vorbehalten! | Subject to errors and technical changes! | Sous réserve
d‘erreurs et de modifications techniques! | Onder voorbehoud van vergissingen en technische wijzigingen! |
Salvo error o modificación técnica! | Rätt till misstag och tekniska ändringar förbehålls! | Excepto erro ou
alteração técnica | Zastrzeżone zmiany techniczne i ewentualne błędy | Omyly a technické změny jsou
vyhrazeny! | A muszaki változtatások és tévedések jogát fenntartjuk! | Отсутствие ошибок не
гарантируется. Возможны технические изменения. | Chyby a technické zmeny sú vyhradené! Stand 8643
Austria
STIEBEL ELTRON Ges.m.b.H.
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Tel. [phone] | Fax [phone]
[email protected]
www.stiebel-eltron.at
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building 2 | 129343 Moscow
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Sales:
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Technique & Service:
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Stadium Road | CH62 3RP Bromborough
Tel. [phone] | Fax [phone]
[email protected]
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17 West Street | West Hatfield, MA 01088
Tel. [phone] | Fax [phone]
Toll-free 800.582.8423
[e-mail]
www.stiebel-eltron-usa.com
A 362308-46092-9928