Worcester GREENSTAR UTILITY 32/50 Instruction Manual page 43

8 716 109 711 b 07.10 14/7/10
NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE
USING 28sec KEROSENE:
FUEL
OIL
PUMP
NOZZLE
FLOW RATE
PRESSURE
(p.s.i.)
Kg/h l/h
B entone Sterling 133 Burner (32/50kW):
0.85 60°ES 150/- 2.78 3.52
1.10 45 ° S
120/- 3.55 4.49
1.25 45° S 155/- 4.33 5.48
Bentone Sterling 146 Burner (50/70kW):
1.25 45° S 145/150 4.33 5.48
1.50 45° S 145/150 5.2 6.58
2.00 45° S 110/135 6.05 7.66
Riello RDB 3.2 (32/50):
1.0 60°ES 100 2.78 3.52
1.10 60 ° S
130 3.55 4.49
1.35 60° S 135 4.33 5.48
Riello RDB 4.2 (50/70):
1.25 60° S 145 4.33 5.48
1.50 45° S 145 5.2 6.58
2.00 45° S 125 6.05 7.66
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR UTILITY 32/50 & 50/708 716
109 711B 07.2010
09:59 Page 43
APPROX
APPROX.
COMBUSTION
FLUE
%CO
AIR
HEAD
GAS 2
SETTING
SETTING
TEMP.
( °C )
N/A
75 11.5 2.0 33.4
85 12.0 4.0 N/A 42.7
95 12.5 8.0 N/A 52.1
N/A
80 12.0 6.0 52.1
N/A
85 12.0 9.0 62.5
90 12.0 13.0 N/A 72.9
75 11.5 3.0 3 33.4
4
77 12.0 4.5 42.7
85 12.5 5.5 5 52.1
1
80 12.0 2.5 52.1
2
80 12.0 5 62.5
3
86 12.0 4.5 72.9
INSPECTION AND SERVICE
Fire valve:
Check that the oil supply pipe has a fire valve
fitted externally to the building with the fire
valve sensor located within the appliance
case. A fire valve sensor clip is provided for
this purpose on the casing support panel.
Re-commission the burner:
1 Sterling burner:
Align burner combustion head (N) into boiler
housing tube with gasket (O) correctly fitted.
Push firmly down to compress the gasket (O).
Tighten burner retainers (H) sufficiently to
ensure a good seal.
1a Riello burner:
Align burner combustion head (N) into
boiler housing tube flange (O).
Secure with retaining nut (H).
Tighten retaining nut sufficiently to
ensure a good seal.
IMPORTANT:
Ensure the gasket is a good seal between
the burner combustion head and the boiler
housing to prevent flue gases escaping
from the combustion chamber into the room.
2 Plug burner lead (K) into control box (D).
Connect an oil pressure gauge to the oil
pump, run the burner and check the oil
pressure is correct for the required boiler
output. Check that the smoke reading is
between 0 and 1, if the smoke reading is
above 1 check the air setting. If the air
setting is correct check that the burner has
been reassembled correctly.
Allow the boiler to warm up then check the
combustion settings are correct as
indicated in the table below, adjust the
CO
When the combustion is correct turn off the
boiler, remove the pressure gauge and refit
the blanking plug.
Refit panels:
APPLIANCE 3 Locate edge of front panel (A) onto
supporting ledge (B) on the baseplate.
INPUT OUTPUT
Secure with screws (C).
kW Btu/hr kW Btu/hr
4 Slide control box (D) into the boiler.
Secure with screws (E).
114000 110000 Locate ball stud connectore (F) and push-fit
upper front panel (G) towards the boiler to
146000 41 140000
secure.
178000 50 170000
If the data label plate has been removed
ensure it is refitted to the appliance.
5 Locate the top panel (H) onto the ball stud
178000 170000
50
connections ( J ) and press down to secure.
213000 60 205000
After service handover:
249000 70 240000
Make a note of the date of any water treatment.
Set the controls back to the users
requirements.
114000 110000
Complete the service interval record at the
146000 41 140000
back of this manual and a CD11 or an
equivalent form.
178000 50 170000
If the appliance is unused and exposed to
freezing conditions; shut off all the mains
supplies, isolate the boiler and drain the
178000 50 170000
system and boiler, including the secondary
213000 205000
60
heat exchanger.
249000
70 240000
if necessary using the air shutter.
2
INSPECTION AND SERVICE
43