DEDICATED PRESSURE SYSTEMS LTD.

Telephone 01372 803 675
Fax 01372 803 678
Email dps@heatweb.com
 
Internet http://www.heatweb.com

The Institute of Plumbing

R/O Shops, 9-19 Manor Green Road, Epsom, Surrey KT19 8RA

SPECIFICATION 849-1

22/08/00
Copies / revised specifications
can be obtained via fax / email

Designed for DPS
Heat Bank Thermal Store System  
HBPP System A  
Everest combination unit  
Single Heat Exchanger (30 ltr/min)  
Immersion Heater Controller  
Electrically heated  
50mm Foam Insulation  
All fitted controls are wired  
Thermostatic Blending Valve 22mm  

Unit Code

849.1.1849.1.2849.1.3849.1.4849.1.5

Capacity [litres]

130150180210250

Base Diameter [mm]

450450450450450

Overall Diameter [mm]

550550550550550

Height [mm]

11901330151017201980

1   Integral Feed & Expansion Tank
2   Plate Heat Exchanger
3   Heat Exchanger Pump
4   Flow Switch
5   Thermostatic Blending Valve, Mixcall III
8   Filling Vent
9   Feed to Ball Valve
10  Isolating Valve
11  Y-Pattern Strainer (supplied loose)
12  Overflow (supplied loose)
13  Cold Feed / Expansion
14  Boost Immersion Heater 3kW Incaloy with Stat
15  Economy Immersion Heater 3kW Low Noise with Stat
16  Cold Mains In, 22mm
17  Hot Mains Out, 22mm
18  Drain Cock
40  Tight Fitting Lid
42  Wiring Centre
43  Horstmann Electronic 7 Immersion Heater Controller
43  Grasslin QE7 Immersion Heater Controller

 
Notes..

The unit is fitted with a Mixcall III Thermostatic Blending Valve, to control thehot water temperature, and prevent scalding.  The graph shows the pressure drop across the valve for various hot water flow rates.

The Valve is adjustable from 27°C to 67°C, and has a lockable head, as shown.

 

The unit is fitted with one heat exchanger, capable of delivering 30 litres/minute @45°C (80°C storage). The graphs shown the domestic hot water output that can be achieved for various storage temperatures.

  

The Electronic 7 Controller is not suitable for a Dual Supply Tarif. Other controllers available to suit.
A Mains Water Isolating Lever Valve must be fitted within the cylinder cupboard, in clear view and easily accessible. A Strainer (supplied loose) must also be fitted, down stream of the isolating valve, to protect the flow switch [4].
It is advised that the mains water is tested for hardness. In areas of hard water, we advise the use of a scale inhibitor.
It is important that SENTINEL X100 Inhibitor is used to protect the Heat Bank Thermal Store.  Use 1 litre per 100 litres of stored water. Label the unit as protected with the label provided.
A suitable anti-freeze, such as X500, should also be added when there is a chance that the unit will be left filled and unheated in freezing conditions. Please note, however, that adding anti-freeze into the store will not protect mains water pipework from freezing - these should be protected seperately (either by draining or by the application of trace heating).