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TEMPERATURE CONTROL
36
147 Hi/Low Models (CTX Thermostat)
Set Point Adjustment:
• Press the ‘set’ button,
SE.1 will be displayed for twelve (12) seconds.
• Press the ‘set’ button again,
The current set point value will be displayed.
• Press the down button (
▼/PRG) to decrease the set point or the up button (▲/ALM) to increase the set point.
• Once the required set point is selected, press the ‘set’ button to save the setting,
SE.1 will be re-displayed for twelve (12) seconds.
• Press the up button (
▲/ALM),
SE.2 will be displayed.
• Press the ‘set’ button,
The current set point for Low Fire will be displayed.
• Press the down button (
▼/PRG) to decrease the set point or the up button (▲/ALM) to increase the set point.
• Once the required set point is selected, press the ‘set’ button to save the setting,
SE.2 will be re-displayed
• Wait 12 seconds,
The current temperature in the water heater will now be displayed and programming complete.
The recommended set points for SE.1 and SE.2 are 82°C and 75°C respectively for a heating system. However, it
may be necessary to increase SE.2 if there is an unacceptable variation in room temperature.
Differential Adjustment:
• Press and hold the down button (▼/PRG) for at least 5 seconds,
“‘E0” will be displayed.
• Press the up button (▲/ALM) until “E5.1” (differential setting for SE1).is displayed
• Press the ‘set’ button,
The current differential value will be displayed.
• Press the down button (▼/PRG) to decrease the differential or the up button (▲/ALM) to increase the
differential. NOTE: The differential is adjustable from 1°C to 6°C.
• Once the required differential is selected, press the ‘set’ button to save the setting,
“E5.1” will be re-displayed.
• Wait 12 seconds,
The current temperature in the water heater will now be displayed and programming complete.
NOTES
• To adjust the differential setting for SE2 repeat the ‘Differential Adjustment’ steps above however when
selecting the ‘E’ parameter press the up button (▲/ALM) until “E5.2” is displayed.
• Do NOT adjust any other parameter settings; this may cause the thermostat to malfunction.