New Flameless Indirect-Fired Heaters for “No Open Flame” Jobs

Wacker Neuson Climate Technology introduces the new HIF 690 and HIF 1200 flameless indirect-fired heaters. These Wacker Neuson heaters use a diesel engine to generate heat, so the flame is completely isolated from the surrounding environment. “Since the flame is isolated from the surrounding air by engine valves,” says David Mencel, Climate Technology product manager for Wacker Neuson, “it will not ignite nearby combustible mixes. This makes these heaters ideal for potentially volatile applications such as oil and gas exploration, underground and aboveground mining, and restoration.”

With Wacker Neuson flameless heater technology, cool ambient and/or recirculated air is drawn into the heater body and pulled through an exhaust heat exchanger and radiator, where it achieves significant heat gain. Air temperature increases further as it is drawn across the engine and heat plate. At the third and final heating stage, air is pushed through the shear plate oil heat exchanger, where it reaches its final temperature and is discharged through the outlet duct. “The HIF 690 and HIF 1200 offer a maximum air output temperature of 120°C with a maximum temperature rise of up to 83°C,” adds Mr. Mencel.

Both heater models boast high CFM airflow and static pressure to optimize heat delivery in a rental-friendly, easy-to-use design. Featuring simple one-button operation, the HIF 690 and HIF 1200 also offer positive air and high temperature shutdowns. Automatic louvers help maintain desired operating temperatures, and a performance monitoring strobe light allows workers to see from a distance that all heating systems are operating properly. Maintenance of the heating system requires only a flush and refill of the high-performance mineral oil lubricating the shear plate and a filter change every 1500 h.

The new Wacker Neuson HIF 690 flameless indirect fired heater is capable of heating up to 28,300 m3 spaces with its maximum input of 200 kW (686,000 BTU/h). The heater delivers up to 113 m3/s (4,000 CFM) airflow at a 11.8 kPa, and it can be equipped with the standard 508 mm air outlet or an optional dual 305 mm outlet. Air returns to the heater via a single 508 mm duct. Powered by a Cummins Tier 4i compliant diesel engine, the HIF 690 can operate more than 20 hours on a single tank of #2 diesel fuel when operating continuously at maximum capacity.

The powerful new Wacker Neuson HIF 1200 flameless heater will heat up to 48,000 m3 spaces with its maximum 353 kW (1,200,000 BTU/h) heat input. The heater supplies air to structures through standard dual 508 mm diameter outlets or optional 4 x 305 mm outlets at a maximum airflow of 184 m3/s at 13.5 kPa. Return air is channeled back to the heater through a single 508 mm return air duct. The new HIF 1200 heater is powered by a John Deere diesel engine and offers over 24 hours of continuous run time at full capacity with its 795 l fuel tank.

Source: Wacker Neuson

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