Hamworthy Sherborne S65, Installation, Commissioning And Service Manual

 
HAMWORTHY HEATING LTD 

SHERBORNE 

500001103/E 

Figure 10.3.3 Connection of Flue System 
(Separate Ducts

 ) 

Appliance connector

90° support elbow

Mounting bracket

Flue elbow

Air inlet box

ø80/100 eccentric

ø100 Flue

adapter

10.3.4 Connection of Single Pipe Horizontal/
Vertical Open Flue – 100mm

Note:

 the flue support cradle is not required for this 

installation and should be discarded. 
Refer to Figures 6.1.4 and 10.3.4. Secure the flue 
elbow mounting bracket to the wall frame using 3 – 
M6 nuts and washers. Locate the 90°-discharge 
elbow onto the right hand mounting bracket lug and 
fit the appliance connector duct between the flue 
outlet in the aluminium boiler casing and the 90° 
elbow. The vertical leg of this duct is telescopic to 
assist with installation. Locate the air inlet terminal 
into the left hand 90° elbow. Fit the remaining flue 
components on route to the terminal discharge 
ensuring a minimum 2° slope and that the flue 
system is self supporting using wall brackets where 
necessary. In terminating the flue system, ensure 
that the joint through the wall / roof is made good 
and weatherproofed. The top of the plastic boiler 
cover has a D shaped recess that marks the 
position of the vertical flue exit point. Using a 
suitable fine toothed hacksaw or jigsaw, carefully cut 
around the inside of the recess to provide the flue 
outlet. 
Having fitted the flue system to the boiler, carefully 
refit the burner assembly and secure to the heat 
exchanger using the 2 – M6 nuts previously 
removed taking care not to damage the probes or 
the burner flange gasket see Figure 10.2. 
Reconnect the pressure feedback tube to the gas 
valve. 

Figure 10.3.4 Connection of Single Pipe (Open Flue)

Air inlet

Flue elbow

90° support elbow

Mounting bracket

Appliance connector

ø80/100 eccentric

adapter

ø100 Flue

Air inlet box

terminal

10.4

Water Connections

 
See Figure 10.4. Care must be taken when installing 
water system pipework that undue stress is avoided 
on the boiler flow and return connections. It is 
recommended that unions are fitted local to the 
boiler and outside of the casing, to permit future 
servicing requirements. Fully closing valves must 
not be connected to both flow and return pipes 
unless the boiler is fitted with an individual, correctly 
sized and positioned safety valve. It is 
recommended that a 3-way 'T' port valve is fitted in 
the flow connection to allow an open vent situation 
should the boiler need to be fully isolated from the 
system. 
To ensure that the flow and return pipework are 
retained within the boiler casing, 

it is 

recommended that swept bends are not used. 

To 

achieve this use 1

1/4

” elbows or tees. 

Figure 10.4    Water Connections

Flow

Return

Return

S65 Model

S70c Model

21