Gas Pressure Checks - L.B.White I-17 Manual Del Usuario E Instrucciones

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I-17 / I-40 Manual and Spark Ignition
5. After servicing, start the heater to ensure
proper operation and check for gas leaks.
6. Clean the heater's orifices with compressed
air or a soft, dry rag. Do not use files, drills,
broaches, etc. to clean the orifice holes.
Doing so will enlarge the hole, causing
combustion or ignition problems. Replace the
orifice if it cannot be cleaned properly.

Gas Pressure Checks

A. Preparation
1. Obtain a pressure gauge test kit part no.
20736.
2. Close the fuel supply valve to the heater.
3. Spark Ignition Heaters: Disconnect
the heater from its electrical supply.
4. Brush or blow off any dust and dirt on or in
the vicinity of the gas control valve.
5. Disconnect the gas hose from the heater.
B. Gauge Installation
1. Connect the pressure test kit between the
heater and its gas supply hose as shown
in Fig. 13. Ensure both gas shut-off
valves on the test kit are in the
closed position when connect-
ing the kit to the heater and gas
supply.
2. Open the fuel supply valve to the heater.
3. Open only the gas shut-off on the test kit to
which the gas supply hose is connected.
4. Manual Ignition Heaters: Adjust the
thermostatic head to its maximum setting and
light the heater.
Spark Ignition Heaters: Reconnect the
heater to its electrical supply
C. Reading Pressures
1. With the heater operating at full heat output
and at minimum heat, the pressure gauge
Owner's Manual • I-17 / I-40
should read the pressure specified on the
dataplate of the zone panel.
2. Does the reading on the gauge of the test kit
agree with that specified on the dataplate? If
so, then no further checking or adjustment is
required. Proceed to Section D.
3. If the pressure does not agree with that
specified on the dataplate, then the regula-
tor controlling gas pressure to the heater
requires adjustment.
D. Completion
1. Once gas pressure has been confirmed and/
or properly set, close the fuel supply valve
to the heater and allow the heater to burn off
any gas remaining in the gas supply hose.
2. If applicable, disconnect the heater from its
electrical supply.
2. Remove the gauge kit and reconnect the
heater's gas hose to the heater.
3. Reconnect the heater to its electrical supply,
if applicable.
4. Open the main fuel supply valves to the
heater. Light the heater.