RETROFIT KIT
INSTRUCTIONS
Instructions:
1. Remove check valve and discard it.
2. Place 3/4"'tee between relief valve and existing tee.
3. Screw reducing brushing and vacuum breaker into tee.
4. Screw
1/4
elbow into reducing bushing on relief valve.
Initial Start-Up
Now that the steam generator has been installed, the unit should be tested to ensure that it is
operating correctly.
For units made before August 8,1991:
1. Remove all literature and packing materials from the interior and exterior of the unit.
2. If no steam connections have been made, attach a hose to the steam outlet at the top of the
steam generator and pipe to a drain.
3. Open the main gas valve.
4. Before you fill the unit with water:
a. For
NGB:
Turn the knob on the gas valve to "PILOT", then push the knob in and hold it
while lighting the pilot burner. Continue to hold the knob in for 60 seconds, allowing the
thermocouple to heat up (this keeps the gas valve open).
b. For
NGB/E:
Turn the knob on the gas valve to the "ON" position.
c. For
NGB/2:
Turn the knob on the gas valve to "PILOT", then push the knob in and hold
it while lighting the pilot burner. Continue to hold the knob in for 60 seconds, allowing
the thermocouple to heat up, so it will keep the gas valve open.
d. For
NGB/2/E:
Turn the knob on the gas valve to the "ON" position.
5. For
NGB
or
NGB/E:
Push the "ON/OFF" switch on the cabinet front panel to the "ON" position. The unit will
automatically fill with water. When the water level in the gauge glass reaches the full mark, wait
30 seconds, then push the "ON/OFF" switch to "RESET". The burner will then light. For
NGB/2
or
NGB/2/E:
Push the "ON/OFF" switch on the cabinet front panel to the ON position. The red light in the
switch will come on, and the unit will automatically fill with water. When the water level in the
gauge glass reaches the full mark, the green "READY" light will come on. Push the "START"
switch. The amber light in the switch will come on. and the burner will light.
6. If connections to a steamer or a kettle have been made, check for steam by:
a. Turning on the steamer and checking for steam inside the cavity.
b. Filling the kettle with water, turning it on. and making sure that the water heats up.
If a hose connection (step "2" above) has been made, check for steam at the end of the
hose.
In all cases, steam should be detected within 20 minutes.
7. To shut down the unit push the "ON/OFF" switch to the OFF position. The generator will drain
automatically after it has cooled to 170°.
4
Содержание NGB
Страница 18: ......
Страница 20: ......
Страница 22: ...For NGB 2 NGB 2 E Made After August 7 1991...
Страница 23: ...Electrical Schematics For NGB 2 made between January 1 1988 and August 7 1991...
Страница 24: ...Electrical Schematics For NGB NGB E made before January 1 1988...
Страница 25: ...Wiring Ladder Diagrams...