STIEBEL ELTRON WPKI 5 Heat Pump Compact Instruction Manual
- June 13, 2024
- STIEBEL ELTRON
Table of Contents
STIEBEL ELTRON WPKI 5 Heat Pump Compact
General information
This document is intended for contractors.
Note
Read these instructions carefully before using the appliance and retain them
for future reference.
Pass on the instructions to a new user if required.
This symbol indicates that you have to do something. The action you need to
take is described step by step.
Relevant documents
Operating and installation instructions for system components
Note
Please see appliance operating and installation instructions for information
on the “Guarantee” and “Environment and recycling”.
Safety
Only qualified contractors should carry out installation, commissioning, maintenance and repair of the kit.
General safety instructions
We guarantee trouble-free function and operational reliability only if
original accessories and spare parts intended for the appliance are used.
Instructions, standards and regulations
Note
Observe all applicable national and regional regulations and instructions.
Intended use
The compact heat pump installation is intended for heating heat pumps without
integral heating circuit pump.
Any other use beyond that described shall be deemed inappropriate. Observation
of these instructions and of instructions for any accessories used is also
part of the correct use of this appliance.
Kit description
The compact heat pump installation includes all required components for hydraulic connection of the heat pump to buffer cylinders with 200, 400 and 700 I capacity. Select and retrofit the heating circuit pump according to the system in DN 25.
Standard delivery
The kit is supplied in pre-assembled individual parts. All pre-assembled
components are factory sealed.
Note
A gravity brake is fitted in the buffer cylinder connector.
The opening pressure is 400 mmWC.
Required accessories
– UP 25/7.5 PCV
Installation
-
Connector with ball shut-off valve
G 1 1/4 female thread heating flow -
Safety valve 0.3 MPa
-
Temperature pressure gauge
-
Connector with gravity brake
-
G 1 1/4 male thread heat pump flow connector
-
Connector with ball shut-off valve
G 1 1/4 female thread heating return -
Ball shut-off valve
-
Drain valve
-
G 1 1/4 male thread heat pump return connector
-
G 3/4 female thread expansion vessel connection
- Screw the kit components and the heating circuit pump together and tighten by hand.
- Fit the components and the heating circuit pump on the cylinder.
- Retighten the fittings.
- Fit the expansion vessel and the drain valve.
- Fit the heat pump flow and return to the heat pump.
Note
The WPKI 5 safety valve must not be able to be isolated from the heat source.
Note
When there is a danger of frost in alternative operation, a drain valve must
be installed on site to drain an external air source heat pump (WPL and
connection hoses).
Note
All shut-off devices are tightly sealed ball shut-off valves.
Only use an open-ended spanner (AF 8) to open and close the ball shut-off
valves.
Heating circuit pump (cylinder charging pump)
A corresponding heating circuit pump can be selected based on the characteristic curves for the pumps and the pressure loss from the compact heat pump installation.
Depending on the heat pump type, we recommend a heating circuit pump from the following table for a standard system.
Heating circuit pump for buffer cylinder
| Heat pump | UP 25/7.5 PCV |
|---|---|
| WPL 13 E,TTL 13 E | X |
| WPL 18 E, TTL 18 E | X |
| WPL 23 E, TTL 23 E | X |
| WPL 33 HT, TTL 33 HT | X |
| WPL 15 AC(S), TTL 15 ACS | X |
| WPL 20 A(C), TTL 20 A(C) | X |
| WPL 25 AC(S), TTL 25 AC | X |
| HPA-O 7-13 (C)(S) Premium | X |
Heating circuit pump for DHW cylinder
| Heat pump | UP 25/7.5 PCV |
|---|---|
| WPL 13 E, TTL 13 E | X |
| WPL 18 E, TTL 18 E | X |
| WPL 23 E, TTL 23 E | X |
| WPL 33 HT, TTL 33 HT | X |
| WPL 15 AC(S),TTL 15 ACS | X |
| WPL 20 A(C), TTL 20 A(C) | X |
| WPL 25 AC(S), TTL 25 AC | X |
| HPA-O 7-13 (C)(S) Premium | _ |
X
Maintenance
**Replacing the safety valve
**
- Replace the safety valve as shown in the diagram.
- Install the new safety valve in reverse order.
- Seal in the safety valve by turning the lock nut against the 0-ring.
Specification
Characteristic curve for heating circuit pump
UP 25/7.5 PCV (constant)
UP 25/7.5 PCV (variable, PWM)
Pressure drop diagram
X Flow rate [I/h] Y Pressure drop [hPa] 1 Pressure loss on heat pump side
X Flow rate [I/h] Y Pressure drop [hPa] 1 Pressure loss on heating side
Data table
| | WPKI 5
---|---|---
| | 234763
Max. operating pressure| MPa| 0.3
Safety valve, heating| MPa| 0.3
Connection| | G 1 1/4
Installed length (gauge)| mm| 180
Weight| kg| 5,1
Customer Service
STIEBEL ELTRON GmbH & Co.
KG Dr.-Stiebel-Str. 33137603 Holzminden Tel. 05531 702-0 I
Fax 05531 702-480
info@stiebel-eltron.de
www.stiebel-eltron.de
tecalor GmbH
Ltichtringer Weg 3137603 Holzminden
Tel. 05531 99068-957001
Fax 05531 99068-95712
info@tecalor.de
www.tecalor.de
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