Halstead Best db 30, Инструкция по установке и обслуживанию

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Supplied By www.heating spares.co Tel. 0161 620 6677
CONTENTS INTRODUCTION
1
The Halstead Best db 30,40,50 and 60 are wall mounted,
fan assisted balanced flue natural gas boilers incorporating a
cast iron heat exchanger. The appliance incorporates automatic
direct burner ignition and electronic temperature control. It
features an attractive white enamelled casing with a removable
front panel which when removed enables the appliance to be
fitted within a standard kitchen wall unit. (Remove top and
bottom panels of kitchen unit).
The appliances are supplied with a standard concentric air and
flue duct suitable for flue lengths of up to 820mm (32in). The
duct assembly is connected to the boiler via an elbow which can
exit the appliance in any horizontal direction. Additional flue kits
are available to extend the flue length up to a maximum of
3.121m (123in), and further kits are available to provide up to
two bends in the flue, although the maximum length must be
reduced
(as detailed in these instructions) to accommodate extra bends.
A vertical outlet kit is also available for installations where an
outside wall is not accessible and it is required to fit the duct
"through the roof". Installation using the standard flue kit (with or
without straight extensions) is described in the main text of these
instructions. This booklet describes installations involving raised
flue systems, extra elbows, and the vertical outlet kit.
The appliance can be installed from inside the room without
access to the external wall providing that a wall liner is fitted and
the wall thickness is less than 0.5m (19in). The wall liner is
available as an optional extra. See Section 4 for further details.
(Note: If the vertical outlet kit is to be used, access to the roof is
necessary).
These appliances are most suitable for fully pumped, open
vented or sealed systems, but may be used on an open vent
system utilising gravity domestic hot water and pumped central
heating
Fully Pumped: If thermostatic radiator valves are fitted it is
recommended that a bypass is installed to provide a suitable
water circuit should all the thermostatic radiator valves be shut.
This bypass circuit should incorporate a minimum volume of
7 litres. It may utilise one radiator which should be fitted with
lockshield valves only.
Gravity: It is recommended that when used on a gravity
domestic hot water application a Honeywell "C Plus" plan or
equivalent is fitted to the system to give suitable control over the
domestic hot water temperature. The cylinder thermostat should
be set NO higher than 60°C. The Honeywell "C Plus" will allow
the pump overun to operate (should it be necessary) without
warming the radiators when the domestic hot water only is on.
The bypass should have a water volume, (7 litres minimum) but
should NOT incorporate any radiators. The flow sensing
temperature is limited to 60°C in the gravity mode, when the CH
pump is off. This is to prevent the cylinder of DHW from
overheating.
Page
1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . 1
2.1 Performance data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.2 Connection sizes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.3 General data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.4 Minimum clearance and overall dimensions . . . . . . . . . . . . . . 1
2.5 Air/flue duct specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2.6 Exploded diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 INSTALLATION REQUIREMENTS . . . . . . . . . . . . . . . . . . . 7
3.1 Statutory requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Boiler location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Flue terminal position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.4 Ventilation requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.5 Gas supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.6 Electrical supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.7 Water systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 INSTALLING THE APPLIANCE . . . . . . . . . . . . . . . . . . . . 11
4.1 Unpacking the appliance. . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 Preparing the wall. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.3 Preparing the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.4 Mounting the appliance. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.5 Flue/air duct installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.6 Gas connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.7 Water connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.8 Wiring instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5 COMMISSIONING & TESTING . . . . . . . . . . . . . . . . . . . 18
5.1 Open vented water systems . . . . . . . . . . . . . . . . . . . . . . . . 18
5.2 Sealed water systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.3 User instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6 ROUTINE SERVICING . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.1 Main burner assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.2 Fan assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.3 Heat exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.4 Re-assemble and re-commission . . . . . . . . . . . . . . . . . . . . . 19
7 PARTS REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.1 Overheat cut off device . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.2 Flow temperature thermistor . . . . . . . . . . . . . . . . . . . . . . . . 20
7.3 Air pressure switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.4 Ignition PCB (fully enclosed). . . . . . . . . . . . . . . . . . . . . . . . . 20
7.5 Aquastat PCB & Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.6 Potentiometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.7 Main burner injector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.8 Gas valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.9 Main burner. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.10 Ignition electrode (front left hand of burner). . . . . . . . . . . . . . 21
7.11 Flame sensing electrode (rear left of burner) . . . . . . . . . . . . . 21
7.12 Fan assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7.13 Combustion chamber insulation . . . . . . . . . . . . . . . . . . . . . . 22
8 INTERNAL WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . 22
8.1 Functional flow wiring diagram . . . . . . . . . . . . . . . . . . . . . . 22
8.2 Illustrated wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9 FAULT FINDING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
10 SHORT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
11 Supplementary instructions for Flue systems with
vertical terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
12 Supplementary instructions for Flue systems incorporating an
additional 90° elbow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
SE-DUCT Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25