- How does the system work? In its simplest form, the DRYAIR system utilizes a water heat to heat a water/glycol heat transfer fluid The heat transfer fluid is pumped to remote portable heat exchangers. The portable heat exchangers' primary components include a hydronic coil and fan. The fan drawsair over the hydronic coil, the air, which is heated by this process, is re-introduced to the work site. One water heater can supply multiple portable heat exchangers.
- Do you require a boiler ticket to operate a DRYAIR system? No. The DRYAIR system does not fall under pressure vessel regulations. It is an "open system" with an atmospherically vented expansion tank and maximum operating pressure of 30 psi.
- How difficult is the system to operate? Very simple! There is a switch for the circulation pump, a switch to fire the water heater and a temperature setting to control the temperature of the heat transfer fluid. Once the system is unning and initial start=up is complete, it is completely automatic. The water heater will automatically respond if heat requirements change.
- How is the air temperature in individual areas controlled? Thermostats are used on each individual heat exchanger. The thermostats act as on/off switches for them. By shutting off the fan, heat transfer from fluid to air is interrupted.
- Does the DRYAIR system add moisture to the work site? No. A DRYAIR system provides "desert air" conditions. Portable heat exchangers provide fluid-to-air heat transfer of clean, heated, low relative humidity air. Note: An increase in air temperature of 18 degrees F reduces relative humidity by 50%. This allows the air to capture more moisture. A DRYAIR system actually promotes total structure dry-out. The systems exceptional dry-out capabilities make it a perfect fit for removing excess moisture caused by flooding or high humidity environments and provides the ideal conditions for interior finish work.
- Is there a fire hazard? No. Fuel combustion occurs only in the water heater, which is located outside of the work site. Heat transfer fluid temperature levels never exceed 190 degrees F... well within safe levels. In fact, explosion-proof fan motors could be utilized in the portable heat exchangers to make the DRYAIR system completely safe, even in highly explosive conditions.
- What fuel source can be utilized? Propane, natural gas, or diesel.
- Can a system be converted from one gas type to another? Yes. With a conversion kit, systems can be retrofitted from propane to natural gas and back. This conversion process will take approximately 2 to 4 hours to complete.
- If I wish to use a natural gas DRYAIR system, what gas supply do I need? You would have to contact your energy company to determine what the exact capacity of your supply line is. All "Utility" companies provide consultations free of charge.
- How does the DRYAIR system affect concrete? Two factors come into play when curing concrete: 1) the hot, low relative humidity air produced by the DRYAIR system will actually remove moisture from the concrete. This will help accelerate the conrete curing process. 2) A DRYAIR system does not reduce on-site oxygen levels. Reduced oxygen levels will cause oxidization of the concrete. Oxidization is seen in the form of "dusting". Once oxidization in the concrete has occured, it cannot be corrected.
- Will the DRYAIR system reduce my heating costs? The DRYAIR system is more economical to operate than conventional portable heating systems. By eliminating the need for supplemental ventilation, a building can typically be heated with half the BTU capacity - resulting in sustantial energy savings.
- How will an indirect heating system affect my insurance costs? With the threat of fire and explosions eliminated, insurance rates may also be reduced. Contact your insurance broker to confirm.
- What are the supervision requirements? The fuel-burning appliance is away from the work site and in its own enclosure - virtually no supervision is required. Temperature controls are automatic... a real plus for overnight and weekend work breaks.
- Does the system require a lot of maintenance? Very little. As the Central Heating Unit is operating with good, clean air away from the work site, its operation is virtually maintenance free... like a home furnace! Heat Exchangers may require periodic cleaning if operating in dusty conditions.
- How will the DRYAIR system affect conditions on the work site? As heat is provided with a liquid-to-air transfer, no noxious fumes are introduced. Since you are not required to ventilate the work site, temperatures remain more constant. Portable heat exchangers are much quieter than burners. By not introducing added moisture to the work site, moisture and ice build-up does not occur. Conditions are more reminiscent of a summer job site. Because of a healthier work environment, increased worker productivity and decreases in employee absenteeism are highly probable.
- What type of structures can be heated with the DRYAIR system? DRYAIR's set-up versatility make it ideally suited to all heating applications, whether it be multi-storied, multiple space or large cubic footage.
- How would I situate the system on the work site? The set-up versatility of the system allows you a great deal of leeway in positioning the Central Heating unit. Locating the system near your gas site is the normal procedure.
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