Mira Vision Installation Manual page 14

2. Mains Pressurised Instantaneous Hot Water Shower, Heated
from a Thermal Store
Caution! Risk of product damage. Do not fit the Mira Digital Mixer - PUMPED
VALVE with Mains Pressurised Systems.
Packages of this type, fitted with a tempering valve can be used. A drop type
pressure reducing valve must be fitted (and regularly maintained) if any form
of backflow prevention device is fitted, e.g. non-return valve, PRV, then an
expansion vessel should also be fitted. This will ensure that excess expansion
or pulse pressures do not damage the product or the plumbing system. The
expansion vessel may already be fitted externally or internally within the thermal
store (check with thermal store manufacturer).
3. Gravity Fed Showers
Caution! Risk of product damage. Do not fit the Mira Digital Mixer - HIGH
PRESSURE/COMBI VALVE with Gravity Fed Systems.
Cistern
Minimum 230 litres
The shower control must be fed from a cold water storage cistern and a hot
water cylinder providing nominally equal pressures. Pipework layouts and
connections must be such that other draw-offs will not effect water supplies to the
shower, shared supplies may lead to airlocking or water starvation. It is therefore
best practice to have independent hot and cold supplies to the Low Pressure
(pumped) Digital Mixer Valve.
Digital Mixer
warm
Valve (HP)
cold cold
hot
hot
30° - 60°
Air Separation
cold
14
ISOLATE MAINS ELECTRICITY BEFORE
REMOVING COVER!
DIGITAL MIXER 2 WIRELESS
MIRA DM2 WIRELESS
HP/COMBI
1666.009
N85A
MANUFACTURED
POWER: 230 V AC 20 W
PROTECTION: IP24
MIN. SUPPLY PRESSURE: 50 kPa (0.5 bar)
MAX. STATIC PRESSURE: 1000 kPa (10 bar) (WRAS) MAX. WORKING PRESSURE: 500 kPa (5 bar)
MAX. SUPPLY WATER TEMP: 65 °C
POSITION APPLIANCE OR
CHELTENHAM KOHLER MIRA LTD.
GL52 5EP
TEL: (+44) 0870 241 0888
www.mirashowers.com HOT COLD
F9001
Mira Vision
hot
Shower Fittings
cold
HOT
COLD
100 mm from the lowest level of
water in the tank
warm
Mira Vision Shower
90°
Fittings
Digital Mixer
Valve (Pumped)
ISOLATE MAINS ELECTRICITY BEFORE
REMOVING COVER!
DIGITAL MIXER 2 WIRELESS
MIRA DM2 WIRELESS
HP/COMBI
1666.009
N85A
MANUFACTURED
POWER: 230 V AC 20 W
PROTECTION: IP24
MIN. SUPPLY PRESSURE: 50 kPa (0.5 bar)
MAX. WORKING PRESSURE: 500 kPa (5 bar)
MAX. STATIC PRESSURE: 1000 kPa (10 bar) (WRAS)
MAX. SUPPLY WATER TEMP: 65 °C
POSITION APPLIANCE OR
KOHLER MIRA LTD. CHELTENHAM
GL52 5EP
TEL: (+44) 0870 241 0888
www.mirashowers.com
HOT COLD
F9001