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RESTRICTOR & EXPANSION DEVICES
DXD
DXDH
50
-
50
60
-
60
90
-
-
90
130
-
-
130
130
-
-
130
150
-
-
150
* Restrictor change required - supplied loose in outdoor unit
** Heating expansion assembly - supplied loose in the indoor unit.
ELECTRICAL CONNECTIONS, CONTROLS and DATA
Mains, control and interconnecting cables must be supplied and fitted by the installer. Installer wiring must be carried out
in accordance with local and national codes. Cables must be size compatible with the recommended fuse for a given
system. An isolator switch should be positioned within easy reach of the unit.
If slave units are connected to a standard unit, isolation of any slave MUST also isolate the standard unit.
The equipment MUST be earthed. Installers must supply a method of securing any solid sheathed cable.
DXD/H UNIT WIRING
Remove the electrics box cover (2 screws) and connect a suitably fused and isolated mains supply.
Site fitted controls should be connected as specified on the wiring diagram found on the inside face of the electric box
cover: typical wiring diagrams are shown on pages 5 and 6, but these are for reference only as many CWD units have a
unique configuration
ELECTRICAL DATA AND N.R.GUIDE
A'flow
MODEL
SPD
(l/s)
1
160
DXD(H) 50
2
170
3
180
1
180
DXD(H) 60
2
210
3
225
1
310
DXD(H) 90
2
360
3
435
1
335
DXD(H) 130
2
382
3
462
1
425
DXD(H) 150
2
477
3
560
Tel: 01823 665660
Heronhill - for all your Marstairs requirements
MRC+
30
-
60
-
90
-
100
-
130
-
130
-
ELECTRICAL DATA
Input (watts)
FLC (Amps)
AC
EC/DC
AC
93
53
0.57
98
62
0.59
118
71
0.65
125
63
0.65
146
-
0.74
177
-
0.80
196
83
1.18
236
112
1.30
262
-
1.38
218
103
1.55
264
130
1.71
294
184
1.77
290
140
2.08
330
179
2.20
373
259
2.32
www.heronhill.co.uk
EXPANSION
MHPUE
ASSY
-
30
3/8"
-
60
90
-
100
1/2"
-
130
-
130
S.C. (Amps)
EC/DC
AC
EC/DC
0.46
1.71
1.38
0.53
1.77
1.59
0.60
1.95
1.80
0.60
1.95
1.80
-
2.22
-
-
2.40
-
0.80
3.54
2.40
1.13
3.90
3.39
-
4.14
-
0.71
4.65
2.13
0.86
5.13
2.58
1.21
5.31
3.63
0.91
6.24
2.73
1.06
6.60
3.18
1.40
6.96
4.20
COOLING
HEATING
RESTRICTOR
RESTRICTOR
0.040
-
0.040
0.039
0.051
-
0.055
0.053
0.063
-
0.067
0.058/
0.068
-
0.068
0.086**
0.071
-
0.076
0.086**
0.074*
-
0.080*
0.092**
Specific Fan Power
GUIDE
AC
EC/DC
0.58
0.33
0.58
0.36
0.66
0.40
0.69
0.35
0.70
-
0.79
-
0.63
0.27
0.66
0.31
0.60
-
0.65
0.31
0.69
0.34
0.64
0.40
0.68
0.33
0.69
0.38
0.67
0.46
Fax: 01823 665807
N.R.
35
37
40
35
37
40
35
37
40
35
37
40
35
37
40
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