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Introduction & Installation
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3. Introduction & Installation
The HEFA 600 MAX (Maxcoil) Portable Heat Exchanger is a mobile unit ideal for heating,
drying, and climate control applications. Hot fluid flows through the heat transfer coil, where it is
transferred to the air drawn through the coil by the unit fan. The coil is specially designed for
optimum heat transfer without adding any moisture or fuel combustion by-products to the air.
Note: These units are designed to connect to DRYAIR water heaters. Specifications, including
BTU output, cannot be guaranteed using other water heaters.
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There are only electrical power and HTF connections to make to a Maxcoil unit.
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Each unit can be put into position by a single person and the connections made in only a few
minutes.
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The fan motor is thermostatically controlled and will cut in and out as necessary to maintain
the set temperature.
Positioning
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Portable Heat Exchangers must have a minimum clearance of 1 ½ feet on the air intake side.
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Full size details can be found in Appendix – Product Dimensions.
Electrical Connections
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Portable Heat Exchangers require a 230 Volt, 30 Amp power supply.
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Each unit is factory equipped with a two foot 230 Volt appliance cable and plug.
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A maximum of 100 feet 14 AWG (or equivalent) extension cord can be run to each Portable
Heat Exchanger.
Fluid Connections
The Maxcoil is designed to be connected in series with other
Maxcoil units (although a single unit can be utilized as well), either
with long circulation lines or short lines (allowing the user to stack
the units on top of each other as seen in Figure 3-1), depending upon
the requirement. In any case, connect 1 ½” circulation lines to the
supply and return camlocks on the unit. Circulation lines of different
sizes can also be purchased to allow connection to other DRYAIR
units.
Figure 3-1: "Stacked"
Maxcoils
