Unvented hot water cylinder – SCxn…d/i, SCxn…sd/si
Page 8 of 28
ST0109 – C 05/09
WATER
Feature
SCxn
d
i
si
sd
80
-
305
80
130
150
175
215
255
305
175
-
305
175
-
305
Materials
- inner cylinder
- outer cylinder
- inlet/outlet
- coils
- insulation
Duplex stainless steel
Dove grey leather grain coated steel
Stainless steel
Corrugated stainless steel
60mm PU foam (GWP=1, ODP=0)
Maximum operating conditions
- potable water temperature
- heating water temperature
- operating pressure
70°C
95°C
6bar
Cold water supply
- minimum dynamic pressure
- maximum pressure
- minimum flow rate
1.5bar
25bar
15 l/min
Connections
- cold water inlet
- hot water outlet
- secondary return
- coil flow and return
- sensor pocket
22mm stainless steel
22mm stainless steel
½”F BSP
22mm stainless steel
½”F BSP
Coil specification
- surface area [m²]
- rating [kW]
-
-
0.3
7
0.5
14
0.75
17
0.75/1.1
17/-
Immersion heater
1/
2
1 1
2
Thermostatic control
- direct input
- indirect input
- integral immersion heater thermostat and cut out
- external twin thermostat and cut out
Safety components
- pressure reducing valve and
strainer
- expansion relief valve
- temperature and pressure relief
valve
- factory pressure test
2bar
6bar
7bar / 90°C
10bar
3bar
6bar
7bar /
90°C
10bar
Other features
Water inlet diffuser – prevents cold and hot water from mix-
ing
Water outlet sloped – improves stratification during draw off
and reduces heat loss
Light weight – easy handling
No anode – reduced service requirements
Approvals
KIWA
BBA
Guarantee
- inner cylinder
- immersion heaters
- other components
25 years
2 years – excluding the effects of lime scale
5 years – excluding expansion vessel membrane pressure
Figure 4 – Product features