Ariston GL 2.5 User manual

OWH-A1-22
page 1 of 1
rev 01/06
Bosch Water Heating
340 Mad River Park, Waitsfield, VT 05673
©BBT NORTH AMERICA
Bosch Group
REPLACING THERMOSTAT
MODELS: GL2.5, GL4.0, GL6+, GL2.5TI,
GL4.0TI, GL8TI
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
B Removethe coverscrew (Phillips)This
holds the front panel in place.
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!!!
A
B
1
2
3
4
5
6
6
5
7
8
7
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
Servicing Ariston water heater
http://waterheatertimer.org/How-to-install-under-counter-water-heater.html

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OWH-A1-21
page 1 of 1
rev 01/06
Bosch Water Heating
340 Mad River Park, Waitsfield, VT 05673
©BBT NORTH AMERICA
Bosch Group
&
REPLACING ELEMENT GASKET OR
ANODE
MODELS: GL2.5, GL4.0, GL6+, GL2.5TI,
GL4.0TI, GL8TI
1. Unplug or turn off the breaker feeding power to the heater
2. Drain the heater (Remove heater to drain if below procedure is not possible)
a. Locate stop and waste valve supplying the heater. They must be lower then the base of the heater.
b. Close the stop valve.
c. Open a hot water faucet served by the Ariston heater.
d. Open the waste valve, making certain that there is a container to catch the water from the heater. The heater
will automatically siphon itself empty.
3. Remove the cover
a. Remove the small blue circle cover (A) by gently prying from the left side ONLY.
b. Remove the cover screw (B, Phillips). This holds the front panel in place (C).
4. Removing / replacing the element, anode and gasket
a. First remove the 2 thermostat push on leads and ground wire from the element.
b. Then unscrew four retaining nuts ( D, 10mm ) on the outer edge of the element flange and pull element out
from heater.
c. Remove the old gasket (E) from back of element (F).
d. If replacing the anode, unscrew the old anode (G) and thread the new anode back onto the element.
e. Place new gasket on tank flange and with 4 carriage bolts (H) in the flange and through the gasket to hold in
place.
f. Reinsert element making sure arrow is pointing up and tighten the (10mm) retaining nuts in a cross pattern
being sure not to cut or pinch the rubber element gasket.
g. Reconnect thermostat lead wires and ground wire to element.
h. Fill tank with water and check for leaks. Replace covers on front of heater.
i. Restore power, return to service
A
B
C
DE
H
G
F

WW
WW
WARNINARNIN
ARNINARNIN
ARNINGG
GG
G
ELECTRICITELECTRICIT
ELECTRICITELECTRICIT
ELECTRICITY IS EXTREMELY IS EXTREMEL
Y IS EXTREMELY IS EXTREMEL
Y IS EXTREMELY DANY DAN
Y DANY DAN
Y DANGERGER
GERGER
GEROUSOUS
OUSOUS
OUS
SO TSO T
SO TSO T
SO TAKE EXTRA PRECAAKE EXTRA PRECA
AKE EXTRA PRECAAKE EXTRA PRECA
AKE EXTRA PRECAUTIONS WHENUTIONS WHEN
UTIONS WHENUTIONS WHEN
UTIONS WHEN
PERFPERF
PERFPERF
PERFORMINORMIN
ORMINORMIN
ORMING ANY WG ANY W
G ANY WG ANY W
G ANY WORK TORK T
ORK TORK T
ORK TO THE HEAO THE HEA
O THE HEAO THE HEA
O THE HEATERTER
TERTER
TER
OWH-A1-01
page 1 of 1
rev 01/06
Bosch Water Heating
340 Mad River Park, Waitsfield, VT 05673
©BBT NORTH AMERICA
Bosch Group
&
RESETING THERMOSTAT AND
SETTING TEMPERATURE
MODELS: GL2.5, GL4.0, GL6+, GL2.5TI,
GL4.0TI, GL8TI
To reset thermostat or adjust Temperature setting
1
2
Thermostat reset button,push
here to reset
To adjust the tempera-
ture of the water in the
GL model heaters, turn
the temperature shaft to
the right for hotter
water and to the left for
cooler water
Removing the cover
1. Remove the blue circle cover with the Ariston logo on
the left of the cover plate.
2. Remove the cover screw. This holds the front panel in
place.