DryAIR MAXCOIL HEFA 600 MAX User manual

Operator Manual
HEFA 600 MAX
S.N. 1546-01 -
DRYAIR Manufacturing Corp
Box 126, 400 Service Road
St. Brieux, SK, Canada
S0K 3V0
Tel: [phone]
Fax: [phone]

Table of Contents
1. Warranty Policies & Claim Procedures...................................................................................1-1
Warranty Policies ....................................................................................................................1-1
BasicWarranty Policy..........................................................................................................1-1
Extended Warranty Policy ...................................................................................................1-1
Exceptions to the Warranty Policies....................................................................................1-1
Owner Obligations...............................................................................................................1-2
Manufacturer Obligations ....................................................................................................1-2
Warranty Claim Procedure......................................................................................................1-3
2. Safety Concerns.......................................................................................................................2-1
General Safety Guidelines.......................................................................................................2-1
Heating Appliance...................................................................................................................2-1
HTF .........................................................................................................................................2-1
3. Introduction & Installation ......................................................................................................3-1
Positioning...............................................................................................................................3-1
Electrical Connections.............................................................................................................3-1
Fluid Connections....................................................................................................................3-1
4. Operation.................................................................................................................................4-1
Controls ...................................................................................................................................4-1
5. Troubleshooting.......................................................................................................................5-1
Fan Does Not Start ..................................................................................................................5-1
Fan is Running but No Heat....................................................................................................5-1
HTF is Leaking........................................................................................................................5-1
6. Maintenance ............................................................................................................................6-1
Daily Checklist........................................................................................................................6-1
Check the Heat Coil for Cleanliness or Clogging................................................................6-1
Check all Fluid Fittings and Connections Daily..................................................................6-1
Storage.....................................................................................................................................6-1
Hardware..............................................................................................................................6-1
Hose & Poly.........................................................................................................................6-1
HTF .........................................................................................................................................6-1
7. Appendix .................................................................................................................................7-1
Electrical Schematic................................................................................................................7-1
Product Dimensions ................................................................................................................7-2
Heat Transfer Fluid Information .............................................................................................7-3

Table of Figures
Figure 2-1: Safety Decals.............................................................................................................2-1
Figure 3-1: "Stacked" Maxcoils...................................................................................................3-1
Figure 7-1: Maxcoil Electrical Schematic ...................................................................................7-1
Figure 7-2: Maxcoil Dimensions .................................................................................................7-2
Table of Tables
Table 1: Glycol/Water Mixture Chart..........................................................................................2-2

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Warranty Policies & Claim Procedures 1-1
1. Warranty Policies & Claim Procedures
DRYAIR MANUFACTURING CORP.(referred to within as DRYAIR) warranties its new,
unused equipment to be free of defects in material and workmanship at the time of delivery to
the original retail purchaser.
Warranty Policies
BasicWarranty Policy
•DRYAIR will repair or replace, at its option, without charge, any defective part of the
equipment for a period of twelve (12) months from delivery to the first retail purchaser,
F.O.B St. Brieux, SK, Canada.
•Any parts that are covered by an extended warranty published by DRYAIR are an exception
to the Basic Warranty Policy and are to be warrantied as per the details of the Extended
Warranty Policy.
•Labour is covered as per DRYAIR flat labour rate.
•The Warranty Policy, terms and conditions, may change from time to time without prior
notice.
•Warranty terms and conditions are transferable in the event of the sale to a second owner.
•Replacement parts will be warrantied for 90 days from the repair date. Bill of sale must
accompany the warranty claim.
•The terms of this Warranty Policy are subject to provincial and state legislation. DRYAIR
reserves the right to make modifications in accordance with provincial and state legislation
without prior notice or obligation.
Extended Warranty Policy
•An extended warranty is available on the heat exchanger unit of the water heater assembly.
The available warranty for a part, under the extended warranty policy, is prorated by 20% per
year.
•Shipment date is the date to be used for the commencement of the warranty period.
•Coverage schedule
Year 1 - 100%
Year 2 - 80%
Year 3 - 60%
Year 4 - 40%
Year 5 - 20%
Exceptions to the Warranty Policies
•Under no circumstance shall the owner be entitled to recover costs for incidental, special or
consequential damages such as, but not limited to: loss of profit or revenue, other commercial
losses, inconvenience and/or replacement equipment rental cost.
•Maintenance, repair or service items not related to warrantable defects
•Loss or damage during shipping
•Failure resulting from lack of or improper maintenance

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Warranty Policies & Claim Procedures 1-2
•Damage caused by operator abuse, negligence or improper operation
•Damage resulting from improper voltage supply
•Damage from improper installation (installation done by someone other than the
manufacturer)
•Non-defective items replaced at the request of the customer
•Damage due to accidents
•Damage resulting from improper fuel supply (i.e. pressure or contamination)
•Damage resulting from cracked or broken lines occurring during transport
•Damage resulting from use of inadequate or improper fluids (i.e. glycol or oil)
•Mileage is not covered.
•Glycol is considered a consumable and will not be covered under warranty policy.
•Generators carry their own warranty coverage through their own manufactures. Please refer
generator issues to the OEM. Contact information may be found in the Service & Operator
Manual under Optional Equipment.
Owner Obligations
•It is the responsibility of the owner, at the owner's expense, to transport the equipment to the
service facility of an authorized DRYAIR distributor/dealer or alternately to reimburse the
distributor/dealer, for any traveling expenses incurred in fulfilling this warranty.
•It is the responsibility of the owner to read, understand and implement the maintenance,
safety, and operational guidelines as laid out in the Operation and Maintenance Guide.
•All parts are to be tagged with a warranty claim number and shipped prepaid to DRYAIR
within 30 days.
Manufacturer Obligations
•DRYAIR reserves the right to continually improve the product’s parts or specifications at
any time without notice or obligation.

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Warranty Policies & Claim Procedures 1-3
Warranty Claim Procedure
•All warranty credits must be processed with the DRYAIR Warranty Claim Form.
•All warranty parts, unless otherwise specified, are to be returned to DRYAIR along with a
completed Warranty Claim Form.
Note: Prior to returning warranty parts, please call for an authorization number and
shipping instructions from the Warranty Department in Canada.
Location of Warranty Depot:
DRYAIR Manufacturing Corp.
400 Service Road
Box 126
St. Brieux, SK., Canada
S0K 3V0
Ph. 1-888-750-1750
•Each warranty claim should only refer to one Serial or Production Schedule numbered unit.
•Warranty parts are to be tagged with warranty claim number.
•When claiming for warranty labour, the allowable warranty labour rate will be $65.00/hour. The
factory reserves the right to adjust the number of hours claimed where deemed necessary.
•The factory may at times specify allowable labour for certain warranty procedures.
•Mileage and travel time, to and from the customer are not eligible for warranty credit.
•Freight charges for warranty parts are not eligible for warranty credit.
•Labour flat rates for component changes:
•Electrical Components - 0.5hr
•Relays
•Switches
•Thermostats
•Breakers
•Electric Motor Changes - 1hr
•Hose Reel
•Plumbing Components - 1hr
•Flow Reverser
•Flow Switch
•Valves
•Glycol Pump Changes - 2hrs
Note: Other labour charges will be at the discretion of DRYAIR

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Safety Concerns 2-1
2. Safety Concerns
General Safety Guidelines
•Make certain that the operator reads and understands all the information in this manual.
•All unauthorized individuals must be kept away from the equipment when in operation.
•All guards must be in place when the equipment is in operation.
•Exercise caution when moving the unit (See Appendix –Product Dimensions for full details).
•Maintain instruction and safety decals. Replace damaged decals as necessary (see safety
decals in Figure 2-1 below).
Heating Appliance
*CAUTION! This unit is a heating appliance.*
Hot Heat Transfer Fluid (HTF) is supplied to the unit via circulation lines and the heat is
distributed by the fan motor.
HTF
*CAUTION! At no time should automobile antifreeze be used in your DRYAIR system. The use of
automobile antifreeze will void your DRYAIR warranty. Always use Propylene Glycol as the
HTF.*
•DRYAIR pre-mixed HTF is made up of 50% “Dowfrost ® HTF” or “Boss Chill PG” and
50% water by weight, to provide freeze protection down to -28°F (-33°C).
•The Glycol/Water Mixture Chart (Table 1) will provide more information on the proper
mixture for your area.
Figure 2-1: Safety Decals

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Safety Concerns 2-2
Table 1: Glycol/Water Mixture Chart
*CAUTION! Whenever coupling or uncoupling the quick-couplers, make sure that the isolation
valves are closed and the pump is turned off. Failure to do so may result in injury caused by hot
HTF.*
•Always use soft water with a neutral pH level (approx. 7) when preparing HTF for use in the
unit.
•For MSDS information regarding Propylene Glycol see Appendix –Heat Transfer Fluid
Information.
Percent Propylene Glycol
Freezing Point
By Mass
By Volume
ºF
ºC
0.0
0.0
32.0
0.0
10.0
9.6
26.1
-3.2
20.0
19.4
17.9
-7.8
30.0
29.4
6.7
-14.0
40.0
39.6
-8.1
-22.3
50.0
49.9
-28.9
-33.8
60.0
60.0
-54.9
-48.3

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Introduction & Installation 3-1
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.
•There are only electrical power and HTF connections to make to a Maxcoil unit.
•Each unit can be put into position by a single person and the connections made in only a few
minutes.
•The fan motor is thermostatically controlled and will cut in and out as necessary to maintain
the set temperature.
Positioning
•Portable Heat Exchangers must have a minimum clearance of 1 ½ feet on the air intake side.
•Full size details can be found in Appendix –Product Dimensions.
Electrical Connections
•Portable Heat Exchangers require a 230 Volt, 30 Amp power supply.
•Each unit is factory equipped with a two foot 230 Volt appliance cable and plug.
•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