BDR91 Relay Box Controls Layout
How do I change the batteries on the
thermostat when they run out?
The relay box will normally be found mounted
close to the boiler.
Theꢀ thermostatꢀ constantlyꢀ monitorsꢀ theꢀ batteryꢀ
powerꢀ level,ꢀ whichꢀ typicallyꢀ lastsꢀ forꢀ aboutꢀ 2ꢀ
isꢀ runningꢀ lowꢀ aꢀ ﬂashingꢀ
ꢀ symbolꢀ willꢀ beꢀ
Installing the Batteries’ꢀonꢀpageꢀ3),ꢀreplacingꢀ
theꢀ usedꢀ batteriesꢀ withꢀ newꢀ onesꢀ inꢀ Stepꢀ c.ꢀ
How do I set one temperature for the
What does it mean when the BDR91
relay box green LED is ON?
Toꢀ operateꢀ asꢀ aꢀ simpleꢀ thermostatꢀ withꢀ oneꢀ
temperatureꢀ throughoutꢀ theꢀ day,ꢀ selectꢀ theꢀ
manualꢀ operatingꢀ modeꢀ byꢀ pressingꢀ theꢀ
MANꢀ button.ꢀ Adjustꢀ theꢀ temperatureꢀ byꢀ
The green LED indicates normal operation of
the radio frequency system. When the green
LED is ON the boiler is also ON. When the LED
is OFF the boiler is OFF.
Theꢀ thermostatꢀ willꢀ continueꢀ toꢀ maintainꢀ thisꢀ
temperatureꢀ untilꢀ anotherꢀ operatingꢀ modeꢀ isꢀ
When do I need to use the push
You should use the push button to control your
boiler only when the RF communication is lost
see the Troubleshooting Guide).
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