10
3. COMMISSIONING & INSTALLATION
3.1 Filling up
1. Open a hot tap.
2. Open the cold water supply valve
3. When water flows from hot tap, close the tap
4. Allow the system to stabilize for 5 minutes
5. Open each hot water tap in turn to expel air
from the system pipe work.
6. Check for leaks.
7. Manually operate Temperature and Pressure
Relief Valve (5) to ensure free water flow
through discharge pipe. (Turn knob left.)
3.2 Draining
Switch off the electrical power (important to avoid
damage to element (8)). Turn off the cold water
supply valve. Open hot water tap. Drain cylinder
by opening optional drain cock (not supplied) on
cold supply pipework (25). If bottom immersion (8)
is to be replaced then additionally open drain cock
at base of cylinder (21). The unit will drain. Drain-
ing process may be speeded up by opening the
temperature and pressure relief valve. A hose can
be applied to bottom drain cock to lead the water
to a gully, sink or similar.
3.3 System flushing
System flushing will not be necessary under nor-
mal circumstances as the line strainer will prevent
ingress of foreign materials, however if flushing is
required, run at least 50 litres of water from the
cylinder at the highest possible flowrate. Close the
taps and follow draining procedure above.
A temperature sensor bracket (22) is factory fitted
in the upper electrical box, see pt. 4.2.1.
Data tables
Note: Temperature rise is from 15 to 60°C. Coil
heating performance based on a primary flow rate
of 15 l/min. at 80°C. Test results are in accordance
with BS EN 12897:2016.
Product
ref.
Max. design
pressure
Operating pressure
CW feed & coil
Pressure drop
primary heater coil
Temp./pressure
relief valve
Safety valve
Pressure/conn.
Exp. vessel
capacity
RI 150
6 bar
Cw in 3 bar, coil 2.5 bar
0.04 bar
90-95°C / 10 bar 6 bar / 15 mm - 1/2”
12 l.
Product
ref.
Weight
empty
Weight
full
Heat-up (mins)
coil/element
Rating (kW)
coil/element
Heat loss
kWh/24h
Recovery
rate 70%
Primary
flow rate
Volume mixed
to 40°C
RI 150
43
184
24.3
16.5 / 3
1.8
17
15 l/min. - 80°C
221 ltrs.
13
25
24
21
22
23
5
6
16
8
