Kingspan AUXD120, Installation And Maintenance Instructions Manual

Page: 12 / 28

11
ULTRASTEEL PLUS SOLAR
UNVENTED
INDIRECT TWIN COIL CYLINDER
UPPER COIL
The upper coil is connected to the fossil fuel boiler as per the
instructions for the ULTRASTEEL PLUS Unvented Indirect
single coil model with the dual stat control and high limit
thermostat inserted into pocket G1 (lower diagram page 12).
The wiring requirements are as depicted on page 12-14.
LOWER COIL: SOLAR INSTALLATION
The flow and return from the solar heat source are to
be connected to the indirect coil. Either primary coil
connection may be utilised as the flow or return. The solar
primary circuit must have its own dedicated circulating
pump, thermal and safety controls which must be installed
as per the solar manufacturers instructions. The solar
control system used must be of the solar differential control
type and should be connected to the solar sensor.
The solar sensor, supplied as part of the solar controls
should be inserts into Pocket G1 and is held in-situ with the
black sensor pocket retaining bung provided.
It is necessary to connect the solar pump via the over-
temperature high limit cut-out (provided) Iinto dry stat
pocket G2 to ensure the heat input to the solar coil is
interrupted if the cylinder overheats. Some method
to prevent thermosyphoning must also be employed.
Non-return check valves in the primary flow and return
pipework would be acceptable. If solar controls do not offer
appropriate isolation a 2 port zone valve (not supplied) can
be used with the pump and high limit stat as shown on page
12.
G2
D2
F
B
G1
D1
E
C
D2
A
D1
Code Designated
Solar
Volume (L)
Fossil Fuel
Volume (L)
Immersion
Heaters
(3kW)
Solar Coil
Surface Area
(m2)
Fluid Content
(L)
AUXSN180 99 76 1 0.760 4.21
AUXSN210 119 82 1 0.860 4.75
AUXSN250 124 119 1 0.860 4.75
AUXSN300 124 161 1 0.960 5.28
Boss centre from floor ErP
Code Capacity
(Ltrs)#
Height
(mm)
Diameter
(mm)
A
(mm)
B
(mm)
C
†
(mm)
D1
(mm)
D2
(mm)
E
(mm)
F
*
(mm)
G1
(mm)
G2
(mm)
ErP
Rating
Standing
Loss, W
AUXSN180 175 1367 550 530 1021 910 345 855 989 NF 400 1021 C 65
AUXSN210 201 1557 550 530 1087 960 375 905 1055 1022 430 1087 C 76
AUXSN250 242 1802 550 530 1332 1030 375 975 1300 1267 430 1332 C 87
AUXSN300 285 2072 550 530 1584 1060 410 1005 1552 1519 465 1584 C 91
* Not always fitted refer to table above
# AT 3.0 Bar
† Not to be used as the primary heat source
KINGSPAN ALBION
RELIABLE HOT WATER CYLINDERS