HA Smart Thermostat setup for multiple TRVs

configuration.yaml

climate:
  - platform: smart_thermostat
    name: Olohuone Smart Thermostat
    unique_id: olohuone_smart_thermostat
    # target input_number has been created manually in Settings -> Devices & services -> Helpers
    heater: input_number.olohuone_smart_thermostat_valve_state
    target_sensor: sensor.olohuone_pvvx_temperature
    min_temp: 10
    max_temp: 24
    ac_mode: False
    keep_alive:
      seconds: 240
    sampling_period:
      seconds: 300
    # NB: changing these after the initial setup won't have any effect!
    # Adjust the values using the smart_thermostat.set_pid_gain service.
    kp: 30
    ki: 0.041666666666666664
    kd: 0
    ke: 0
    pwm: 0
    debug: true

olohuone_automation.yaml

alias: Update Olohuone Valve State
description: ""
trigger:
  - platform: state
    entity_id:
      - input_number.olohuone_smart_thermostat_valve_state
condition: []
action:
  - service: number.set_value
    data:
      value: >-
        {{        
        (states('input_number.olohuone_smart_thermostat_valve_state')|float/100*99)|round}}
    target:
      entity_id:
        - number.olohuone_e_trv_valve_control
        - number.olohuone_s_radiator_thermostat_valve_control
        - number.ruokailutila_s_radiator_thermostat_valve_control
        - number.ruokailutila_w_radiator_thermostat_valve_control
mode: single