VOKERA Maxin 24e, Инструкция по установке и обслуживанию

Страница: 7 / 57

6
MAXIN 24e & 28e
For protection of combustibles, refer to BS
5440:1 where the terminal is less than 2m
(6.6ft) above a pavement or platform to
which people have access (including any
balcony or flat roof the terminal must be
protected by a guard of durable material).
A suitable guard is available from Vokèra Ltd.
Part No 018, G.C. No. 301 106
This guard must be fitted centrally over the
terminal. Mark the positions of the fixings,
drill the wall and secure using wall plugs and
3 of 1½" No.8 plated screws.
4.6 Water Circulation (Central Heating)
Detailed recommendations are given in
BS 6798:1987 and BS 5449:1:1990 (for
smallbore and microbore central heating
systems).
4.6.1 The following notes are given for general
guidance.
4.6.2 Pipework
Copper tubing to BS 2871:1:1971 is recom-
mended for water pipe. Jointing should be
either by capillary soldered or with compres-
sion fittings.
Where possible, pipes should have a gradi-
ent to ensure air is carried naturally to air
release points and water flows naturally to
drain taps.
It should be ensured as far as possible that
the appliance heat exchanger is not a natural
collecting point for air.
Except where providing useful heat, pipes
should be insulated to prevent heat loss and
to avoid freezing. Particular attention should
be paid to pipes passing through ventilated
spaces in roofs and under floors.
4.6.3 By-Pass
An automatic by-pass is incorporated in the
boiler and systems should be designed to
ensure that with only one radiator turned on a
flow rate of at least 350 litres/hour (1.28 gals/
min) is achieved through the boiler see 6.9.4
4.6.4 System Design
Figs 5 & 5a illustrates typical system lay-
outs showing options of either, pipe connec-
tion from below as fig. 5, or pipe connection
from above utilising the purpose made duct
in the rear frame of the appliance.
4.6.5 Draining Taps
These must be located in accessible posi-
tions to permit the draining of the whole
system. The taps must be at least 15mm
nominal size and manufactured in accord-
ance with BS 2879:1980.
Fig. 4
4.5 Air Supply
The following notes are intended for general
guidance.
The room sealed fan flued boiler does not
require a permanent air vent for combustion
air supply.
Where installed in a cupboard or compart-
ment ventilation is not required.
Terminal position for fan assisted boiler
(minimum distance)
mm
A - Directly below an open window or other 300
opening (e.g. air brick)
B - Below gutters, soil pipes or drain pipes 25
C - Below eaves 25
D - Below balconies or car port roof 25
E - From vertical drain pipes and soil pipes 75
F - From internal or external corners 25
G - Above ground or below balcony level 300
H - From a surface facing a terminal 600
I - From a terminal facing a terminal 1200
J - From an opening in the car port (e.g. door
window) into dwelling.
1200
K - Vertically from a terminal on the same wall 1500
L - Horizontally from a terminal on the same wall 300
M - Horizontally from a vertical terminal to a wall 300
N – Horizontally from an opening, airbrick, openable
window, etc.
300
NOTE: The flue must be terminated in a place not likely
to cause a nuisance.