I-UDSA-UK (02-19) PN 06 00116 UDSA R3, page 16
NOTE: If replacement parts are required, use only
factory-authorized parts.
Figure 11a : Location of controls
The material contained in the MAINTENANCE AND SER
-
VICE section of this manual is designed to aid a qualified
service technician in maintaining and servicing this equip-
ment. This heater will operate with a minimum of mainte-
nance.
To ensure long life and satisfactory performance, a heater
that is operated under normal conditions should be in-
spected and cleaned at the start of each heating season
(inspection and maintenance at least once a year). If the
heater is operating in an area where an unusual amount of
dust or other impurities are present in the air, more frequent
maintenance is recommended.
When any service is completed, be careful to reassemble cor-
rectly to ensure that no unsafe conditions are created. When
starting the heater, always follow the lighting instructions on
the heater.
Warning: If you turn off the power supply, always turn
off the gas.
Maintenance Schedule
- The following procedures should be
carried out at least once each year (see Figure 11a) :
• Clean all dirt, lint, and grease from the fan blade, fan guard,
and motor.
• Check the heat exchanger both internally and externally for
evidence of physical damage.
• Check the burner for scale, dust, or lint accumulation. Clean
if required.
1) Burner
2) LC3 limit control
3) Burner operating led
4) Reset switch (S5)+burner lockout
5) Spark ignitor (ER)
6) Control panel
13
MAINTENANCE/SERVICE
• Check the vent or vent/combustion air system for sound-
ness. Replace any parts that do not appear sound.
• Check the wiring for any damage. Replace damaged wiring.
3
8
1
4
2
5
6
7
9
10
11
7) Main gas valve (V1)
8) Venter motor.
9) Limit control LC1
10) Flame sensor (IS)
11) Modulating gas valve (VM)
