OSO 20 Series
|
|
|
|
|
|
Illustration: OSO 20 Series - technical drawing
Table 1: Technical specification
Cylinder material
F18 MT stainless steel
Coil material
316 stainless steel 22mm Ø
Construction
Convex ends – fusion welded seams
Pressure testing
Factory tested to 16 bar
Insulation
Oso eco foam 40 – 50mm
Outer casing
Epoxy powder painted steel – White
Packing
Sturdy cardboard box
Cold feed connection
Elbow supplied – ¾”male to 22mm compression. Incorporates drain valve
Balanced cold water connection
Multibloc 22mm compression
Hot water draw off connection
22mm stainless steel to accept compression fitting (removable dip tube)
Primary flow and return
¾” BSP female
Secondary return
½” BSP female – use T-piece (not supplied)
Expansion relief hose
Stainless steel flexible hose
Tundish
Inlet 15mm, Outlet 22mm
Expansion relief valve
RWC 8 bar
Temperature & Pressure relief valve
RWC 90°C 10bar
Cold water inlet valve
RWC 2.1 bar
Domestic water expansion
Internal air bubble
Immersion heater
3kw incoloy 825
Hi-limit thermostat
Surface mounted 85°C ±3°C
Cylinder thermostat
Surface mounted adjustable 40 – 70°C
Motorised valve (indirect only)
Honeywell V4043
Cylinder thermostat setting
60°C
Maximum primary pressure
8 bar
Maximum cylinder working pressure
8 bar
Maximum cylinder supply pressure
12 bar
Minimum water supply
20 litres/min with 1 bar dynamic pressure
Secondary pressure drop
Negligible
Heating system
Open vented or sealed system primaries
Compatible boilers
Thermostatically controlled boilers
Electrical installation
To comply with current IEEE regs
Approval (building regulations)
BBA Certificate 94/3022
Approval (water regulations)
WRAS Certificate 0509068
Table 2: Dimension, Performance and Environmental information
Product code
RD100
RD125
RD170
RD210
RD250
RD330
RI100
RI125
RI170
RI210
RI250
RI330
Height (mm)
720
900
1150
1400
1600
2090
720
900
1150
1400
1600
2090
Diameter (mm)
580
580
580
580
580
580
580
580
580
580
580
580
Height point 1 (mm)
480
480
780
780
780
780
Height point 2 (mm)
225
225
225
225
225
225
Height point 5 (mm)
465
610
787
982
1222
1697
465
610
787
982
1222
1697
Height point 12 (mm)
345
435
560
755
995
1470
345
435
560
755
995
1470
Height point 13 (mm)
110
110
110
110
110
110
110
110
110
110
110
110
Weight empty (kg)
34
40
48
60
64
82
37
43
53
65
69
87
Weight full (kg)
127
159
209
255
297
391
161
205
230
266
320
370
Actual capacity (litres)
102
128
171
211
248
329
99
125
166
206
243
334
Coil output (kw)
12
12
26
26
26
26
Heat up (2 elements) (minutes)
80
97
132
168
250
Upper element heat up (minutes)
36
64
68
72
77
Lower element heat up (minutes)
89
116
161
200
240
327
81
102
148
175
202
263
Recovery (lower element) (minutes)
81
102
148
175
202
263
71
92
138
165
192
253
Heat up (coil) (minutes)
28
33
27
31
37
48
Recovery (coil) (minutes)
21
25
20
23
28
36
Usable hot water draw off at 42°C (ltr)
117
193
241
317
419
489
112
188
231
307
409
479
Standing heat losses (kWh/24h)
1.32
1.55
1.77
1.95
2.19
2.55
1.32
1.55
1.77
1.95
2.19
2.55
Ozone Depletion potential (ODP)
0
0
0
0
0
0
0
0
0
0
0
0
Global Warming Potential (GWP)
1
1
1
1
1
1
1
1
1
1
1
1