20IP18B
36
6.3
Live run check
a.
Disconnect the electrical connections to the 1st and
6.
If no leak is found, this indicates that the 1st safety shut
off valve is letting by and should be replaced (whole
multi block on models R2017 and R2022).
7.
With test points 10/1 and 10/2 opened connect them
together with a short piece of flexible tubing which
incorporates a tee connection to the pressure gauge.
8.
Open and close the gas service cock to pressurise up
to the 2nd safety shut off valve.
9.
Allow 1 min. for temperature stabilisation and then
check for any loss of pressure at the gauge during the
next 2 minutes.
10.
If there is a pressure loss the pipework between the 1st
and 2nd safety shut off valve should be checked with a
suitable leak detection fluid with the gas service cock
open. (Not applicable to models R2017 and R2022).
11.
If no leak is found this indicates that the 2nd safety shut
off valve is letting by and should be replaced (whole
multi block on models R2017 and R2022).
12.
Seal test point 10/2, replace pressure gauge on un-
sealed test point 10/1 and open pilot manual cock.
13.
Open and close the gas service cock to pressurise up
to the pilot safety shut off valve.
14.
Allow 1 minute for temperature stabilisation and then
check for any loss of pressure at the gauge during the
next 2 minutes.
15.
If there is a pressure loss the pipework upstream of the
pilot safety shut off valve should be checked with a
suitable leak detection fluid with the gas service cock
open.
16.
If no leak is found this indicates that the pilot safety
shut off valve is letting by and should be replaced.
2nd safety shut off valves by removing the plug from
the front electrical panel.
Open the gas service cock and pilot manual cock and
with the control thermostat on a high setting turn on the
electrical supply and the on/off switch on the front con-
trol panel.
Check that the combustion air inlet damper cycles to
the fully open position and back before ignition of the
pilot burner commences.
Using the sight glass at the lower right hand side of the
water heater check that the ignition electrode ignites
the pilot burner and that the pilot burner is stable in
operation.
Check that the water heater goes to lockout approxi-
mately 5 secs later and that the pilot burner is extin-
guished. (It may be necessary to purge the ignition
Summary of Contents for ECONOPAK R2000
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Page 65: ...20IP18B 57 ...
