page no. 46 of 68
CP
x Range Users, Installation & Servicing Instructions Doc Ref M201 issue 2.9 Nov 2018.
NOTE: CD/CF Counterflow heaters have two
fan and limit thermostats fitted. Either one will
start the main fan and either one will shut the
burner down in the event of an overheat
situation.
C
A
U
T
I
O
N
DO N
O
T
RO
TAT
E - HOLD
DIAL
WHEN SETTING POINTER
50 100 15
0
2
0
0
2
5
0
F A N
L
I
M
IT
O F F O N
O
F
F
Fan Circuit
OUT
Fan Circuit
IN
Brass Link
Location
Limit Circuit
OUT
Limit Circuit
IN
Mechanical
Limiter
Limit Set
Point
Adjuster
Fan ON
Override
Fan ON
Set Point
Adjuster
Fan OFF
Set Point
Adjuster
Set Point Dial
Mechanical Limiter
Release Point
1. Undo cover retaining screw
2. Squeeze the sides of the cover and remove cover by
pulling forward.
3. Release wiring from clamp terminals by pushing a small
screwdriver into the clamp release holes adjacent to the
clamps.
4. Remove the 2 screws securing the thermostat to the
heater panel and withdraw thermostat.
5. Reassemble new unit in reverse order referring to the
heater wiring diagram to ensure correct wiring as detailed
in section 2.5.
IMPORTANT: A replacement fan/limit
thermostat may have a brass link between
the terminals. This MUST be removed,
before the replacement thermostat is
installed.
NOTE: The new L4064B may be supplied with
the limit temperature mechanically limited to
less than the setting required. To release the
mechanical limit push a stiff wire into the
small hole at the top of the dial located by the word
"CAUTION". At the same time prevent the dial from
rotating and push the limit temperature adjuster around
to the required setting.
CAUTION
Thermostat settings:-
Fan Off: 86°F/30°C Fan On: 122°F/50°C
Limit:
CPx 30 - 90, 150 - 175
212°F/100°C
CPx 120
230°F/110°C
CPx 200 - 300
248°F/120°C
NOTE: Temperature points on the dial are in
Fahrenheit
