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Technical data

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INSTALLATION & SERVICING INSTRUCTIONS
J From opening in a car port eg door, window into dwelling 1200mm
K Vertically from a terminal on the same wall 1500mm
L Horizontally from a terminal on the same wall 300mm
Additional notes for car ports and other single storey "add-on" extensions:
Any car port or other add-on extension should consist of a roof, or a roof and one other wall. If it
consists of a roof and two other walls the installation shall be treated as suspect and further advice
sought.
If there is any opening in the car port into the dwelling, eg door, window, then the terminal must be at
least 1200mm away from the opening. If it is less, then the installation must be treated as suspect and
further advice sought. If it is more than 1200mm, the D, F,H, and I shall apply where D is the vertical
distance between the lowest point of the roof and the top of the terminal.
If the roof is plastic, then the installation should be treated with great care, as there is no simple way of
protecting the roof.
Page 99
5.0 WATER SYSTEM
The boiler is supplied with copper compression water fittings, of the size shown in the
Technical Data
Section. The flow and return pipes are identified by labels and on Figure 13.
The installation should comply with the appropriate requirements of BS5449, 1990, BS5546, 1990 and
BS6798, 1987. The boiler is designed for use on fully pumped systems only, of the open vented or
sealed type.
5.1 Open Vented or Sealed System
Pump
The pump should be capable of providing the mimimum water flow rate, as shown in the
Techmical
Data Section. The boiler pressure loss graph (Figure 3) should be considered when selecting the
pump. The recommended selection is a Myson Unit 5 or equivalent. The pump should be fitted with
isolation valves and in a readily accessible position in the flow pipe from the boiler.
Drain Cock
At least one drain cock should be fitted, at the lowest point in the system.
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