Cast Iron Boiler MI3 by Iran Pipe and Machinery Co. Model S90-7

Guide to Selecting and Purchasing the MI3 Cast Iron Boiler Model S90-7

MI3 cast iron boiler by Iran Pipe and Machinery Co. Model S90-7 is made of premium-grade cast iron alloy and offers a thermal efficiency of 93%. The MI3 S90-7 boiler operates with high performance and silent operation, making it suitable not only for residential boiler rooms but also for use in sports facilities, administrative, and industrial buildings.
On the specialized and reference website DamaTajhiz, you can find the technical information and guaranteed prices of various MI3 cast iron boilers with official warranty — ensuring you enjoy a smart and optimal purchasing experience.

Features of MI3 Cast Iron Boiler Model S90-7

Here are the boldest features of MI3 type cast iron boiler model s90-7:

• Operating pressure: 4 bar
• Compact dimensions and easy transportation due to the separable sectional design of the boiler
• Easy replacement of damaged sections and simpler maintenance compared to steel boilers
• Certified with the national standard mark and approved by the Industrial Research Institute of Iran for central heating and domestic hot water boilers, including capacity and efficiency testing
• More affordable price and warranty compared to standard-certified steel boilers

Calculating the Capacity of MI3 Cast Iron Boiler Model S90-7

To roughly estimate the required capacity of a cast iron boiler, multiply the usable floor area of the building (in m²) by 100 (kcal) and then add 6000 kcal per apartment unit to provide domestic hot water.

Example: For a building with 1,500 m² of usable area and 10 residential units, the required boiler heating capacity would be:
210,000 kcal = (10×6000) + (100×1500)

To calculate the required hot water boiler capacity based on the number of units, total floor area, building application type, and the presence or absence of a hot water pool, you may consult the DamaTajhiz engineering team. Usually, about 20% is added to the calculated boiler capacity as a safety margin.
The MI3 cast iron boiler Model S90-7 comes with a 5-year warranty from the date of delivery and lifetime after-sales service.

Key Installation Notes for MI3 Cast Iron Boiler Model S90-7

The most important consideration when using cast iron boilers is the operating pressure limitation and the need for proper sealing between the sections after assembly. If the building has more than six units, it is recommended to use two central heating boilers installed in parallel in the boiler room, each operating at 70% of the total required capacity. This ensures reliable heating and domestic hot water supply.
A thermometer–manometer must be installed on each cast iron boiler to display the water temperature and system pressure. Also, an immersion thermostat (aquastat) with a temperature range of 30–90 °C (or 30–110 °C) should be installed to regulate boiler temperature and provide on–off control signals to the burner relay.
All main boiler room equipment, including the central heating boiler, must be installed on a pre-constructed concrete foundation with proper dimensions according to the layout plan and designated equipment positions. Therefore, ensure that the required concrete foundation is prepared in advance based on the specified dimensions and standards before installation.
You can order any HVAC and MEP products, including different types of air washers, cooling towers, air handling units, chillers, industrial evaporative coolers, air curtains, burners, cast-iron or steel boilers, heat exchangers, gas heaters, unit heaters, circulation pumps, sand filters, water and fuel storage tanks, and more, from countries such as the UAE, Armenia, Tajikistan, Georgia, Azerbaijan, Turkey, Oman, Pakistan, Turkmenistan, Georgia, Kuwait, Uzbekistan, Qatar, Iraq, and others across Asia, the Middle East, and Europe, and have them delivered to your city (Manama, Baghdad, Karachi, Dubai, Sharjah, Muscat, Riyadh, Abu Dhabi, Kuwait City, and Doha Amman, Sulaimaniyah, Kirkuk, Islamabad, Mosul, Erbil, Dushanbe, Aleppo, Damascus, Baku, etc.) in the shortest possible time. Furthermore, you can ask any question in the HVAC area of expertise and receive a free consultation from our professional team members by calling +98-930-288-0251 or sending a WhatsApp message to this number.

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