
HAMWORTHY HEATING LTD Page 500001113/D
Wimborne GM
Wimborne GM boilers have an operating efficiency of
over 82% based on gross CV.
The heat exchanger assembly is completed by cast
iron front and rear combustion chamber plates and
access plates for the cleaning and inspection of the
heat exchanger flue ways (rear only), all of which are
internally lined with a fibre insulation board. The
burner mounts onto the front plate which is hinged,
suitable for left or right hand operation.
The flow and return water connections are located on
top and to the rear of the boiler. Refer to Figure D for
details.
The Wimborne GM boiler is available with high/low
burners for operation on Class D (35 second) fuel
oil, Natural Gas I2H (Second Family).
The boiler is supplied with a pre-wired control panel
which contains:
a. A fuse
b. An illuminated mains on/off switch
c. Boiler control thermostats (On/Off) & (High/Low)
d. Boiler run, (High/Low) and lockout lamps.
e. A temperature limiter (overheat thermostat) to shut
down the boiler should the water temperature in the
heat exchanger exceed 110°C - with manual reset.
f. An overheat lamp
g. A water temperature thermometer (temp. gauge)
h. Flying leads and plugs to connect to the burner
i. Volt free relay contacts for normal run, overheat
and lockout.
The boiler is housed in a powder coated sheet steel
casing which is supplied flat-packed for on-site
assembly. Refer to Section 10.3 for casing assembly
procedure.
1.4 Hydraulic Testing
All Wimborne GM boiler sections are hydraulically
tested, ensuring the Wimborne GM boiler is suitable
for use on systems with maximum working pressures
of up to 6 bar.
1.5 Boiler Set
The boiler is normally supplied as a set of equipment
comprising the following:
a. Cast iron sections mounted on pallets
b. Accessory kit and tie rods
c. Casing panels
d. Insulation blankets
e. Flue tubes - 22 off
f. Control panel
g. Matched burner: fuel oil or gas
h. Burner mounting plate, drilled ready to accept
burner
i. Oil burner nozzle/s where applicable.
1.6 COSHH Information
Irritant
The boiler insulation blankets are non-
carcinogenic, mineral wool fibre, and may
cause inflammation and irritation on
immediate or repeated or prolonged
contact with the skin or if inhaled. The use of suitable
protective clothing is highly recommended. Avoid
contact with skin and direct inhalation
1.6.1 In case of contact with the eyes, rinse
immediately with plenty of water and seek medical
advice.
1.6.2 In case of contact with skin, wash immediately
with plenty of water.
1.6.3 In case of inhalation, retire to clean air supply
and seek medical advice.
2