3
Coral E
3. TECHNICAL DATA
Connections
* Frame size (mm) of WMF models is 730 wide, 660 deep and 915 high.
Frame size (mm) of 150 EBF/SS model is 600 wide, 600 deep and 1080 high.
Frame size (mm) of 210 EBF/SS model is 650 wide, 650 deep and 1080 high. All frame weights are approximately 14 kg.
Heat loss exceeds the requirements of BS 3198.
Notes:
i. Allow a minimum of 100 mm on the depth to accommodate the immersion heater covers and plumbing connections.
ii. All models are supplied fitted with two 3 kW Maxistore immersion heaters. The 100 and 150 models can be
supplied with only one immersion heater (bottom) fitted with the other boss plugged, if specified when ordered.
iii. Dimensions shown are for the hardboard cased versions, the white metal cased units are slightly smaller.
iv. All compression fittings are suitable to accept copper tubing to EN 1057.
Graph giving an indication of the minimum hot water performance available
Figures obtained using the store fully
heated to 85°C, with a mains cold water
supply temperature of 10°C and the
following constant draw off rates:-
Coral E 210 - 18 litres/min.
Coral E 150 - 18 litres/min.
Coral E 100 - 12 litres/min.
Volume drawn off (litres)
80
20
260 280 300
220
200
40
180
140
120
60
100
160
240
50
45
Temp
(°C)
40
Coral E 210
Coral E 150
Coral E 100
3.1. Hot water performance
Electricity supply:
230/240 V ~ 50 Hz
(each heater fused at 13 A)
2. IMPORTANT NOTES
1.
The control thermostats on both immersion heaters are factory set for maximum performance (top at 75°C
and bottom at 85°C). The bottom thermostat may be reduced slightly (not below 75°C) where it is known that
hot water demand will not be high.
2.
The top ('Boost') immersion heater must be controlled via a runback timer (one or two hours, preferably one
hour) and not a simple isolating switch. This timer has two purposes, firstly to prevent uneconomical use of full
price electricity and secondly it acts as a form of protection against long periods of boiling in the unlikely event
of thermostat failure, therefore preventing permanent damage to the unit.
Note: If a runback timer is not fitted and the unit is damaged due to boiling, the damage will not be
covered by the product guarantee.
3.
For optimum performance we recommend a dedicated 22 mm mains cold water supply to the unit and a 15 mm hot
water outlet. If the mains cold water supply pressure is less than 1 bar we recommend a 22 mm hot water outlet.
4.
The level of the water in the feed and expansion tank must be set to the waterline mark - it is not factory set.
5.
An isolating valve should be fitted in the mains cold water supply to the unit.
6.
We recommend that a Y type line strainer is fitted in the mains cold water supply to the unit.
7.
We recommend that a scale reducer is fitted on the mains cold water supply prior to the unit. This is especially
important in hard water areas (in-line scale reducers may reduce flow rates).
8.
If a non-return valve is fitted in the mains cold water supply to the unit, provision must be made to accommodate
the increased water volume during the normal heat-up cycle, e.g. a mini expansion vessel with a capacity of
not less than 160 ml (i.e. Zilmet Z160).
9.
The hot water blending valve is factory set to approximately 50°C. For adjustment refer to section 5.2.
10. For installation and servicing requirements, the portion of the work surface above the UWS model must be
removable. The unit may be positioned in a cupboard space beneath the work surface and a door fitted, if
required - allow 100 mm on the depth to accommodate the immersion heater covers and plumbing connections.
100 UWS
100
150
210
300
* 150 EBF/SS
* 210 EBF/SS
* 150 WMF
* 210 WMF
100
100
150
210
300
150
210
150
210
571
571
571
571
600
600
650
560
571
750
865
1285
1285
1285
880
940
820
1000
571
495
495
584
700
600
650
730
730
Tank height
mm
Capacity
litres
Tank depth
mm
Heat loss to BS 3198
W/litre (kW/24hrs)
0.44 (1.18)
0.44 (1.18)
0.33 (1.28)
0.27 (1.48)
0.33 (1.28)
0.27 (1.48)
0.33 (1.28)
0.27 (1.48)
Tank width
mm
Coral E
model
Hot water
15 mm comp.
Mains cold water
22 mm comp.
Overflow
22 mm comp.
Immersion heater 2¼" BSP (2 off)
Drain boss
½" BSP
-
-
-
-
-
1960
2020
1735
1915
Total height
with frame mm
