![background image](http://html1.mh-extra.com/html/warmflow/a-series/a-series_user-instructions_3395043043.webp)
Page 41
3.10 Electrical Installation
Together with the connection to the mains, there are a number of sensors and input/output
connections which must be made with the heat pump. These connections are to be made in the
installers wiring enclosure. The installers wiring enclosure can be found under the removable
plastic cover panel of the heat pump casing.
The installer’s wiring enclosure contains the entire necessary connection terminals for installation.
Electrical installation including cable sizing and protection should only be undertaken by a
qualified electrician in accordance with the latest Institute of Electrical Engineers (IEE)
regulations.
3.10.1 Incoming Supply
The AS01-R32, AS02-R32 & AS03-R32 units all require a single phase 230V
ac
50Hz electricity
supply compliant with EN50160, 230V -6% +10% (i.e. 216.2 V – 253.0 V). Note: Fluctuations in
the voltage characteristics of the electricity supply may adversely affect the operation of the
appliance as well as its warranty.
The AS01-R32 is rated at 13Amps whilst the AS02-R32 is rated at 22Amps and the AS03-R32 is
rated at 33Amps. As these units are variable speed, during starting the compressor speed is
ramped up slowly meaning there is not a high starting current commonly associated with fixed
speed units and as such there is no need for a very large power supply or the use of starting
capacitors.
The units must be protected by a Type C MCB and RCD according to the table below.
Table 7 Electrical Installation Specification
Unit
Minimum Wire Gauge
MCB Rating (Type C)
RCD Rating (Type F)
AS01-R32
2.5mm
2
20A
30mA ≤0.1 seconds
AS02-R32
4.0mm
2
32A
30mA ≤0.1 seconds
AS03-R32
6.0mm
2
40A
30mA ≤0.1 seconds
NOTE: The incoming power supply must be connected via an isolating switch with a
minimum breaking gap of 3mm. Cable cross sectional areas should be calculated
according to the current at full load together with the on-site conditions and the cable
length between the heat pump and the consumer unit, the above table lists minimum
recommendations only.
3.10.2 Digital Inputs
The unit can also be controlled remotely from an external controller such as a timeclock or room
thermostat instead of the internal timeclock. To enable remote control, parameter H07 must be
changed from ‘Master’ to ‘Slave’. This will activate the digital input connections in the installers
wiring enclosure. These connections are all ‘volt free’ and therefore no voltage should be
connected into any of them, they are enabled by connecting the relevant terminals together.
Summary of Contents for A Series
Page 36: ...Page 34 Figure 24 AS02 R32 Casing Dimensions Heating Connection Locations FRONT SIDE TOP...
Page 40: ...Page 38 Figure 26 Heating DHW Schematic Figure 27 Heating Only Schematic...
Page 70: ...Page 68 7 APPENDIX B WIRING DIAGRAMS...
Page 71: ...Page 69...
Page 72: ...Page 70 This page is intentionally left blank...
Page 74: ...Page 72 This page is intentionally left blank...
Page 76: ...Page 74...
Page 77: ...Page 75...
Page 78: ...Page 76...
Page 79: ...Page 77...
Page 80: ...Page 78...
Page 81: ...Page 79...
Page 82: ...Page 80...
Page 83: ...Page 81...
Page 84: ...Page 82...
Page 85: ...Page 83...
Page 86: ...Page 84...
Page 87: ...Page 85...
Page 88: ...Page 86...