O Potterson CF 20/35, Инструкция по установке и обслуживанию

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Check soundness of all appliance gas carrying components and joints using le
ak detection fluid and a mirror where necessary.
K Switch off the boiler, using the thermostat knob.
FINAL ADJUSTMENT
A Remove the screw from the burner pressure test nipple on the gas control v
alve and fit a pressure gauge to the test nipple. See
FIG. 16.
B
Turn on the boiler thermostat, then check that the pressure is in accordance w
ith the values stated under
TECHNICAL DATA
The burner pressure is factory set to the maximum stated.
C If burner pressure adjustment is necessary, remove the screwed cap from t
he gas control valve see
FIG. 16 and turn the screw beneath clockwise to incr
ease pressure andanti-clockwise to reduce pressure.
D With the burner set to its correct pressure, the firing rate given in TECHNIC
AL DATA should also be obtained and this should be checked by meter readin
g 10 minutesafter the main burner has been lit.
E Shut down the boiler, remove the pressure gauge. Replace the screwed cap
and refit the screw in the test nipple. Re-
light and test for gas soundness at the test nipplescrew.
F Remove the self-
adhesive arrow from the inspection ticket tied to the burner supply pipe and sti
ck it to the Data Plate attached to the inside of the casing bottom panel toindic
ate the appropriate burner setting pressure.
G Heat the system to maximum. Check for water leaks, turn the boiler off, drai
n the system whilst hot.
H Refill the system and on sealed systems adjust to the correct cold fill pressu
re. Set the pressure gauge pointer to the system design pressure.
I If a by-pass circuit is fitted, the by-
pass valve should be adjusted with the boiler operating under minimum load c
onditions to maintain sufficient water flow through the boilerto ensure that the
overheat thermostat does not operate under normal operating conditions.
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