6
Inoxstor Pre-Plumbed Water Heater
Installation, Usage and Maintenance Instructions
Dashed Line indicates
contents of Inoxstor
Pre-Plumbed
Expansion
Vessel
Audax
Heat Pump
Flow
Return
Return
Zone 1
Return
Zone 2
Cold
Water
Inlet
Pressure
Reducing
Valve
Check
Valve
3- Way
Valve
Mixing
Valve
Tundish
Tundish
Anti-Vacuum
Valve
Temperature &
Pressure Relief Valve
Flow
Zone 1
Flow
Zone 2
Monobloc Safety Group
Safety Valve (PRV)
Isolation
Valve
Showers and
Hot Taps
Cold Taps
and Mixers
To Drain
3.3 HYDRAULIC SCHEMATIC
3.4 UNVENTED INSTALLATIONS
Thermostatic control —
Energy Cut Out Device
The in-built immersion heater contains a high limit thermostat which is factory pre-set to 60°C. This
should not be removed or bypassed.
Mixing Valve
A mixing valve must be installed. A thermostatic mixing valve limits the temperature of the delivered
water by mixing it with cold water as required. The delivered water temperature should not exceed
50°C.
Pressure Relief valve
This is the most important safety device. All unvented water heaters must be fitted with a Pressure
Relief Valve (Expansion valve) with a setting of 6 bars. The safety group includes a PRV. DO
NOT remove the safety group.
Pressure Reducing
Valve
The cold water supply pressure must not exceed 3.5 bar. The safety group contains a PRV to reduce
pressure below this level. DO NOT remove the safety group.
Expansion vessel
Expansion must be accommodated using an Expansion Vessel. The Expansion vessel must be sized
to accommodate the maximum expansion of the system and should be suitable for use with potable
water. The size of the expansion vessel is proportional to the volume of the DHW system.
The size of the vessel should be carefully calculated. A rule of thumb for systems with a cold water
supply pressure of 3.5 bars and a maximum heating temperature of 60°C is that the volume of the
expansion vessel should be at least 10% of the total DHW system volume.
Backflow Prevention
The included safety group contains a non-return valve to prevent backflow to the cold water supply.
DO NOT remove the safety group.
Anti Vacuum Valve
An Anti Vacuum Valve may be installed to ensure that the water heater is vented if exposed to an
internal negative pressure.
Temperature and
Pressure Relief valve
(T&P valve)
It is recommended to install a T&P valve. This ensures that the temperature of the stored water can-
not exceed 100°C by venting the water heater under these conditions.
Failure to fit these essential safety devices will invalidate the warranty and create a dangerous installation.
This may lead to property damage, injury or loss of life.
Summary of Contents for INOXSTOR 200
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