Ariston GL2.5 Replacing Thermostat

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REPLACING THERMOSTAT
MODELS: GL2.5, GL4.0, GL6+, GL2.5T
GL4.0T
Removing thermostat
1. Unplug or turn off the breaker supplying power to the heater
2. Remove the cover from the heater, see Figure 1 below
3. Unscrew the mounting screws on thermostat. Fig 2 ( 7)
4. Remove the thermostat push on leads. Fig 2 (5 & 6)
5. Unscrew the hot wire .Fig 2 (2)
6. Unscrew the neutral wire.Fig 2 (3)
7. Pull out the indicator light from the right side of thermostat.Fig 2 (8)
Replacing the thermostat - see figure 2
1. Attach the hot wire (2) and the netural wire( 3) back to the thermostat
2. Reconnect thermostat lead wires. (5 & 6)
3. Place the indicator light in the thermostat. (8)
4. Attach the new thermostat on the heater with the mounting screws (7)
5. Replace front cover
Figure 1
A Remove the Blue circle cover with the name
Ariston on the left of the heater .Gently pop
the small cover from the left side ONLY!!!
B Remove the cover screw (Phillips) This
holds the front panel in place.
1-Element
2-Hot/ black wire
3-Neutral /white wire
4-Ground/Green wire
5-Long white element wire
6-Short white element wire
7-Themostat Mounting screws
8-Indicator Light
©BBT NORTH AMERICA
Bosch Group
, GL8T
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Servicing Ariston water heater
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340 Mad River Park, Waitsfield, VT 05673
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Bosch Water Heating
OWH-A1-22
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rev 01/06
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