Venturi - andrews NEOflo SC25/200 Installation, Operation And Maintenance Manual

VENTURI (Fig. 9.4)
• Remove the lower front panel.
• Pull off the air tube (Fig. 9.4).
• Undo the three screws holding the venturi to the
gas valve.
• Undo the two screws holding the venturi to the fan
and remove.
• Ensure the gasket is transferred to the new venturi
or positioned on the fan before positioning the
replacement.
• Ensure the rubber gasket between the gas valve and
venturi is correctly positioned.
• Replacement is the reverse.
• Allow the heater to ignite and check for gas leaks
after the gas valve.
• After fi ve minutes check the rate and combustion is
correct to the data table. (inside front cover). Adjust
using the throttle screw on the gas valve clockwise
to decrease CO , anti- clockwise to increase CO
2
(Fig. 9.1)
G061
G062
G063
G064
G065
G066
G067
G068
G069
Earth connection
NEOfl o Water Heater
.
2
SPARE PARTS
O ring, gascock
Gas Valve
Electrode gasket
Electrode
Burner Insulation
Burner
Ignition Lead
Pressure & Temperature Relief valve

Venturi

LCD DISPLAY
B314
G070
G071
G072
G073
G074
G075
G076
G077
LCD PCB
On/Off Switch
connections
25
Unvented Kit
Fan Gasket
Fan
User LCD Control
Burner Control
Flue Th ermostat
High Limit Sensor
Pocket, Th ermostat
Control Sensor
Fig 9.2
September 2015