diff --git a/devices/viessmann.js b/devices/viessmann.js
index af3f5084a7c94..2ee8ba31829ab 100644
--- a/devices/viessmann.js
+++ b/devices/viessmann.js
@@ -14,11 +14,13 @@ module.exports = [
         fromZigbee: [fz.legacy.viessmann_thermostat_att_report, fz.battery, fz.legacy.hvac_user_interface],
         toZigbee: [tz.thermostat_local_temperature, tz.thermostat_occupied_heating_setpoint, tz.thermostat_control_sequence_of_operation,
             tz.thermostat_system_mode, tz.thermostat_keypad_lockout, tz.viessmann_window_open, tz.viessmann_window_open_force,
-            tz.viessmann_assembly_mode,
+            tz.viessmann_assembly_mode, tz.thermostat_weekly_schedule, tz.thermostat_clear_weekly_schedule,
         ],
         exposes: [
             exposes.climate().withSetpoint('occupied_heating_setpoint', 7, 30, 1)
-                .withLocalTemperature().withSystemMode(['heat', 'sleep']),
+                .withLocalTemperature()
+                .withSystemMode(['heat', 'sleep'])
+                .withWeeklySchedule(['heat']),
             exposes.binary('window_open', ea.STATE_GET, true, false)
                 .withDescription('Detected by sudden temperature drop or set manually.'),
             exposes.binary('window_open_force', ea.ALL, true, false)