Software Listing of Author : "Mr Combi Training"

A study carried out by Worcester Bosch Group's technical support team found that the most common cause of a boiler installation problem was from incorrectly sized gas pipes. When fitting a new boiler, often the existing pipes should be replace for larger ones due to the increased output. Smaller pipes will mean the boiler is running at a lower power and can cause an increase in carbon monoxide levels.

The Gas Pipe Sizing Calculator is an extremely easy to use app that will help you to select the right size pipes for installations using copper (up to 108mm), steel (up to 300mm) and PE (up to 315mm) pipes of sections up to 250m (820ft) in length.

To carry out a calculation simply select the gas type, enter the appliance heat input, enter the pipe length, the number of high or low loss fittings (guidance is given in the app), select...

  • Platform: Android 2.x, Android 3.x, Android 4.4, Android 4.x

Mr Combi's Gas Rate Calculator will help you find gas rates (cubic metres per hour, cubic feet per hour and litres per second) and gross and net heat inputs in MJ/h, kW and BTUs per hour.

The app has the following features:

✔ Built-in let-by/tightness testing timers
✔ Built-in conversion calculator
✔ Built-in guide with full gas rate calculations and let-by/tightness testing procedure
✔ Works on all types of meter
✔ Metric and imperial calculators
✔ Supports natural gas, butane and propane
✔ Save manual calorific values for improved accuracy
✔ Select between a 1 and 2 minute timer for metric meters
✔ Selectable timer alert
✔ Supports ¼ft³, 1ft³, 2ft³ and 5ft³ imperial test dials
✔ Built-in torch
✔ Email results to any destination or share to other apps such...

  • Platform: Android 2.x, Android 3.x, Android 4.4, Android 4.x

Use the Gas Ratio Calculator to process the results from your Gas Flue Analyser and find the CO/CO2 ratio for natural gas.

If the boiler is running efficiently there may be no need to service it. Simply test the boiler with your analyser and obtain the oxygen, carbon monoxide and carbon dioxide values.

Input the values from the analyser into the Gas Ratio Calculator, the CO/CO2 ratio will be calculated and advice also given on whether the boiler should be serviced or not.


***Mr Combi Training would love your feedback on this app and suggestions for other apps that Heating Engineers would find useful. Please contact us at mrcombiapps@gmail.com

  • Platform: Android 1.x, Android 2.x, Android 3.x, Android 4.4, Android 4.x

The Heatloss Calculator & Guide from Mr Combi Training includes two useful calculators:

• Heatloss calculator - finds the heatloss from a room
• Radiator calculator - estimates a radiator's length/output

Heatloss Calculator:
This easy to use calculator lets you enter the details for a room, with dimensions in metres or feet, and it will then will calculate the heatloss in Watts and BTUs per hour. The desired room temperatures (12 - 24°C) can be set in the settings page and also the outside temperature (-25 to +5°C) the temperatures are also given in their Fahrenheit equivalents.

The results will show:

• Ventilation heatloss - Losses from air passing through the room.
• Fabric heatloss - Losses through walls, floor and ceiling.
• Total heatloss - Sum of the ventilation and fabric losses.

The required...

  • Platform: Android 2.x, Android 3.x, Android 4.4, Android 4.x
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