Dimplex LI AS - Manual (Page 2)

EVERYTHING IS UNDER CONTROL
Dimplex LI MS and LI AS air source heat pumps utilise the WPM2004
Plus Heat Pump Manager designed to regulate, control and monitor
the entire heating system.
The heat pump, heating and hot
water pumps, mixer motor and
supplementary heating sources
are all automatically activated by
the wall mounted WPM2004 Plus
unit.
Water temperatures for up to 3
space heating circuits plus
domestic hot water are individually
programmable, providing maximum
comfort and efficiency.
Simple to understand ‘warmer / cooler’ buttons adjust the temperature
settings, while the heating system can be programmed to operate on
a timed basis if required.
The WPM2004 Plus Heat Pump Manager allows Dimplex LI MS and LI AS air source heat
pumps to provide full control over 3 separate heating circuits as well as the preparation of
domestic hot water.
Key features:
Simple 6 key operation.
Large, well laid out illuminated display with indication of
present operating status and service messages.
Dynamic menu-based user guidance, adapted to the
configuration of the heat pump system.
Interface for remote control unit with identical menu options.
Outdoor temperature controlled heating cycle.
Control over 3 heating circuits and domestic hot water.
Priority control:
– Water heating takes priority over space heating.
Automatic actuation of supplementary heat sources (electric
immersion heater or gas/oil boiler).
Automatic actuation of mixer valves for supplementary heat
source (gas/oil boiler or solar energy storage system).
Heating
Zone 3
Heating Zone 2
Heating Zone 1
DHW
Tank
Heat
Pump
Buffer Tank
Dimplex heat pumps offer a variety of services—providing the home
with comfortable
warmth is only one
of them. It can also
produce all the hot
water needed for
the kitchen or
bathroom.
Dimplex provides all
the components
needed for these applications, including buffer tanks, hot water
cylinders, heating system manifolds and hydraulic accessories.
1. WPM2004 Plus Heat Pump Manager
With air source heat pumps the Heat Pump Manager is supplied in
its own housing for wall mounting.
2. Buffer tank
A 140L under-unit buffer tank is available for use with Dimplex LI MS
and LI AS heat pumps, providing the benefit of minimising the
space required.
A buffer tank extends operating times and ensures a minimum water flow
rate through the heat pump in all operating conditions. Where the heat
pump provides the sole source of heating, an electric immersion element
can also be integrated to provide supplementary heating if required.
3. Heating system connections
A range of compact accessories are available to ensure a
professional and trouble-free heat pump installation, with all the
connections and individual components combined and assembled
in the minimum of space. Options include:
Compact manifold with shell-type insulation and integrated
hot water connection.
Hot water module for connection of an additional heating
circuit (e.g. hot water heating).
Simultaneous connection of compact manifold and hot water
module to the heat pump via a manifold bar.
4. Hot water cylinder
For the central hot water supply Dimplex offers a range of unvented
hot-water cylinders, sized correctly for the maximum heating
capacity of the heat pump.
An integrated temperature sensor is connected to the heat pump
manager, allowing the heat pump to automatically control the
production of hot water as and when it is required.
AIR SOURCE HEAT PUMPS —
BENEFITS OF THE UK CLIMATE
Compared with central Europe (where air source heat pumps
are already very popular), the UK has a relatively moderate
winter climate.
With average winter
temperatures of around
5°C, seasonal co-
efficients of performance
comparable with ground
source heat pumps are
achievable, without the
additional cost of
expensive ground loop
systems having to be
installed.
J F
28
24
20
16
12
8
4
0
28
24
20
16
12
8
4
0
M A M J J A S O N D
Average UK temperatures
over 12 month period
maximum temperature (°C)
minimum temperature (°C)
DIMPLEX HEAT PUMP ACCESSORIES
3
4
2
1