Hamworthy Sherborne Series, Инструкция по установке, пусконаладке и обслуживанию

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HAMWORTHY HEATING LTD
SHERBORNE 500001103/E
9.1 Electrical Supply Connections
The method of connection to the mains electricity supply
must facilitate complete electrical isolation of the single
boiler/battery with a contact separation of at least 3mm in
all poles. This mains isolator must be provided adjacent to
the boiler in a readily accessible position. The supply
should only serve the boiler.
The appliance must be isolated from the mains
electricity supply in the event of electric arc welding
being carried out on any connecting pipework.
NOTE! It must be possible to isolate Volt free contact
electrical supplies where fitted (see note in control panel).
Further details regarding connection to the electricity
supply are given in
BS EN 60335, Part 1 or BS 3456, Part
201 .
The power supply to the boiler should not be switched by a
time clock. The Sherborne boiler has a remote stop/start
loop, which can be used to operate the boiler under a
timed regime. This remote loop requires a volt free contact
for operation. A 12V dc signal is supplied by the boiler for
this circuit to function. The remote high/low control loop, if
utilised, operates in the same manner. Refer to Figures
8.12 and 9.1 for wiring connection details. See
BS 6644 for
further information. Do not modify this circuit in any way.
9.2 Indication Signals and Volt Free Contacts
Volt free contacts are provided to enable external indicator
lights or alarms to derive signals for normal run, overheat
and lockout.
Note:- These external circuits
MUST be isolated before
any service or maintenance procedures are carried out.
9.3 Cable Installation
Access to the controls is achieved by removing the boiler
cover. The wall frame contains two 20mm dia sockets on
the bottom left hand side, for electrical cable conduit
anchorage prior to entering the boiler cabinet. Internally the
boiler is provided with two 20mm dia. flexible conduits
connecting the wall frame to the control panel.
All site cables must be routed through the flexible
conduits to terminate in the control panel.
Care must be taken to ensure correct connections are
made to the relevant terminals before applying power.
Refer to Figures 8.12 and 9.1 for wiring connection details.
9.4 Sequencing Interface Module (Optional)
The interface module is supplied fitted to the boiler control
panel and with the control connections to the boiler main
control PCB made. The interface module requires a 230V
~ 50Hz L & N supply. The interface module PCB fuse
rating is T250mA. It is recommended that the interface
module is supplied from the same mains isolator as the
boiler it is fitted to.
A 0-10V analogue control signal from the external
sequence control system is required, ground and signal
connections. The interface module is configured to give a
linear response to the 0-10V signal between 2.0V (20%
rate) and 10.0V (100% rate). Below the 2.0V the boiler will
operate at 20% rate until the input signal falls below 0.3V at
which point the boiler is shut down. There is ±0.1V
switching hysteresis.
The sequencing interface module incorporates a 10way
plug/socket screw terminal block to make the site wiring
connections. Refer to Figure 8.12 for wiring connection
details.
10.0 BOILER ASSEMBLY AND INSTALLATION
10.1
General
Each boiler is normally despatched to site in four packs.
Pack 1 – the boiler assembly.
Pack 2 – the accessory pack assembly
Pack 3 - the control panel assembly.
Pack 4 - the flue assembly.
The boiler should be positioned to allow at least the
minimum clearances detailed in Figure 2.1 which allows
access for pipework and servicing requirements.
10.1.1 Free Standing Frame - If the boiler is supplied with a
free standing frame kit, assemble the free standing frame
as per the instructions supplied with the kit, prior to
assembly of the boiler.
10.2 Mounting The Boiler To The Wall
10.2.1 Select the position of the boiler on the wall (or the
position the free standing frame) ensuring that the
minimum clearances nominated in Figure 2.1 are
achievable -
refer to section 4.
Carefully open Pack 2 and remove the fixing template from
the carton. Position the template on the wall in the selected
location ensuring it is level both horizontally and vertically.
10.2.2 Mark the position of five wall plate fixing holes, the
centre (keyhole) must be used together with four
others (2 on each side).
Mark the position of the flue hole
for rear exit if applicable. Drill the fixing holes and fit an
M10 Rawlbolt (not HHL supply) to the centre fixing. Locate
the wall plate onto the centre fixing bolt and secure the wall
plate using the remaining fixings, ensuring that it is level. If
the boiler is to be mounted onto a free standing frame,
fasten the wall plate to the top 4 holes in the 2 frame
uprights using 4 M10x65 bolts, nuts and washers supplied
with the free standing frame kit.
10.2.3 If the rear flue exit is being used, core drill the hole
for the flue pipe (150mm dia.). For all other flue installations
refer to
section 10.3.
10.2.4 Carefully remove the boiler body assembly from
Pack 1 and stand the unit on the floor with the water
connections to the right hand side. Disconnect the
pressure feedback tube from the gas valve – see Figure
11.2. Remove the 2 – M6 nuts securing the burner/fan
assembly to the front of the heat exchanger – see Figure
11.1, and carefully remove the burner assembly, taking
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