General Information - OSO DGC 200 Installation Manual

1. General information

1.1 Health and Safety regulations.
Handling Operations Regulations 1992 defines manual handling as: "any transporting or supporting of a load (including the lifting,
putting down, pushing, pulling, carrying or moving thereof) by hand or bodily force" The Regulations set no specific requirements such
as weight limits. However common sense still has to be used based on an ergonomic approach for each individual.
The Delta HP VIP should be transported and stored in a vertical position
1.2 Siting the Delta HP VIP .
There are few restrictions on the siting of the OSO Delta HP VIP, however it should not be sited anywhere open to frost attack. The
unit should be placed on a stable flat surface capable of withstanding the weight of the cylinder when full (see technical data on page
11) and access must be allowed for maintenance purposes. If wall mounted with an OSO wall bracket, the wall should be capable
of withstanding the forces generated by the weight of the full cylinder. Provision should also be allowed for the routing of the discharge
pipe away from the cylinder to an outside point according to building regulation G3. (See page 10)
1.3 Component Check list
Components supplied with the unit in a separate accessory kit for site fitting:
Multibloc valve, includes pressure reducing valve, line strainer, balanced cold water take off,(for shower or bidet only) check
and expansion valve.
Tundish
3/4'' x 22mm Elbow / Drain Cock
Motorised valve
Expansion vessel.
1.4 Components factory fitted
Immersion heater
Thermostats / thermal cut-out
Temperature and pressure relief valve.
1.5 Documentation supplied - Installation manual & log book
1.6 Supply requirements
An uninterrupted 22mm cold water mains supply is recommended, however if only a 15mm supply is available, this may be used
provided there is sufficient flow rate available, a minimum standing pressure of 2.5 bar and a flow rate of 20 litres per minute with a 1
bar dynamic pressure is recommended. The cylinder will operate at lower pressures and flow rates however the performance will be
compromised. The OSO unvented unit is designed for use with supply pressure up to 10 bar. For pressures over 10 bar an
additional pressure reducing valve must be fitted in the supply pipe to the unit.
1.7 Expansion vessels
The vessel accommodates expanded water when the cylinder is heated and prevents the cylinder reaching its maximum working
pressure.
1.8 Compatible fittings and components
All thermostatically controlled boilers are compatible with indirect OSO cylinders. Heat sources to unvented hot water cylinders must
be controlled by a thermal cut-out as well as a thermostat. The OSO Ecoline GEO is supplied with sensor bosses and pockets to
house temperature sensors linked to the heat pump.
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