OSO 15 Series Slimline
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Illustration: OSO 15 Series Slimline - technical drawing
Table 1: Technical specification
Cylinder material
F18 MT stainless steel
Coil material
316 stainless steel 16mm 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
½” BSP male
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
2kw 240V
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
15 RD125
15 RD125 FF
15 RI125
15 RI125 FF
Height (mm)
1609
1609
1609
1609
Diameter (mm)
430
430
430
430
Height point 1 (mm)
x
x
376
376
Height point 2 (mm)
x
x
191
191
Height point 5 (mm)
1153
1153
1153
1153
Height point 12 (mm)
616
616
616
616
Height point 13 (mm)
181
181
181
181
Weight empty (kg)
30
30
35
35
Weight full (kg)
158
180
160
182
Actual capacity (litres)
128
150
125
147
Coil output (kw)
8
8
Heat up (2 elements) (minutes)
120
Upper element heat up (minutes)
53
88
Lower element heat up (minutes)
174
210
153
195
Recovery (lower element) (minutes)
153
147
138
136
Heat up (coil) (minutes)
49
60
Recovery (coil) (minutes)
37
42
Usable hot water draw off at 42°C (ltr)
193
216
188
221
Standing heat losses (kWh/24h)
1.55
1.55
1.55
1.55
Ozone Depletion potential (ODP)
0
0
0
0
Global Warming Potential (GWP)
1
1
1
1