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

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Introduction & Installation 4-1
4. Operation
Once the unit has been connected to both power and fluid lines, follow the operation guidelines
below to adjust the temperature of the outlet air. Be sure to entirely read and understand this
section before trying to start and run your new DRYAIR system.
Controls
The temperature on the unit is controlled thermostatically, allowing the unit to self-regulate the
desired temperature.
•The thermostatic control is adjusted with a screw driver. Simply adjust to the desired
temperature and toggle the switch to the “ON” position.
When the desired temperature is reached, the control will shut off the fan, thus stopping heat
transfer from the coils. Demand for heat will re-activate the fan.

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Troubleshooting 5-1
5. Troubleshooting
Fan Does Not Start
If the fan does not have power:
•Check that the correct power supply is connected to the Maxcoil.
•Check the condition of the power connection cable.
If the fan has power, but is not running (all switches in the appropriate position and connections
are made):
•The fan motor is equipped with a thermal overload fuse that may tripped in cases of extreme
temperature. The fuse is located inside the fan motor and must be reset if tripped.
Fan is Running but No Heat
If the fluid inlet is cold:
•Check that all valves are open and fluid is circulating. If the valves are open and there is
circulation but the fluid is cold, the problem lies with the water heater.
If the fluid inlet is hot but the outlet is cold and still no heat:
•Check the heat exchanger coil for flow obstructions. If flow is obstructed, disconnect the unit
from the circulation system and flush.
HTF is Leaking
•Check all connections, fittings, and hoses. Tighten as required.
•Shut down the fan and check the coil for leaks. Replace coil if leaks are found.

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Maintenance 6-1
6. Maintenance
DRYAIR products are designed to be low maintenance systems. All assemblies are assembled
using extensively tested and certified components. Following these maintenance procedures will
ensure the maximum benefit and least amount of downtime for the system. The daily
maintenance schedule is designed to be a quick system check and ensures a low risk of operating
interruptions.
Daily Checklist
Check the Heat Coil for Cleanliness or Clogging
•Clean as required
Note: Do not use high pressure air or water to clean the coil as this will cause damage to the
coil fins.
Check all Fluid Fittings and Connections Daily
•Tighten or replace as required.
Storage
Hardware
•Exercise reasonable care when handling.
•The Maxcoil should be sheltered when stored for extended periods of time.
Hose & Poly
•To extend the life of the rubber and poly components of the system (hoses and air tubes), it is
recommended that they be stored out of the sun when not in use.
HTF
•See Material Safety Data Sheets in Appendix –Heat Transfer Fluid Information for full
details

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Appendix 7-1
7. Appendix
Electrical Schematic
Figure 7-1: Maxcoil Electrical Schematic

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Appendix 7-2
Product Dimensions
Figure 7-2: Maxcoil Dimensions

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Appendix 7-3
Heat Transfer Fluid Information
See the attached Material Safety Data Sheets for complete information on the HTF used in
DRYAIR units.

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MATERIAL SAFETY DATA SHEET
SECTION 1: CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
PRODUCT NAME:
BOSS CHILL PROPYLENE GLYCOL
PROPYLENE-GLYCOL BASED
Heat Transfer Fluid Concentrate
Date Prepared:
Sept 19, 2014
COMPANY IDENTIFICATION
Supplier:
BOSS LUBRICANTS
112, 6303 –30 STREET SE
Calgary, AB T2C 1R4
Telephone:
403-279-2223
Fax:
403-279-2272
Toll Free:
800-844-9457
National Fire Protection Association
1
Health
1
Flammability
0
Reactivity
Special
Product Name:
BOSS CHILL PROPYLENE GLYCOL
Product Description:
Propylene Glycol based industrial coolant and/or heat transfer fluid
Chemical Name:
Inhibited propylene glycol, aqueous solution
Chemical Family:
Mixture
Formula:
Mixture
Synonyms:
Heat transfer fluid, coolant
DOT Identification:
Not regulated
DOT Shipping No.:
Not regulated
Manufacturer:
BOSS LUBRICANTS
SECTION 2: TYPICAL COMPOSITION
Material
CAS No %Wt

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Propylene Glycol
000057-55-6 96%
Proprietary inhibitors
Not applicable 4%
Deionized Water
007732-18-5 Balance
This document is prepared pursuant to the OSHA Hazard Communication Standard (29 CFR
1910.122). In addition, other substances not “Hazardous” per this OSHA Standard may be listed.
Where proprietary ingredients shows, the identity may be made available as provided in this standard.
BOSS CHILL PROPYLENE GLYCOL
BOSS LUBRICANTS: MATERIAL SAFETY DATA SHEET
SECTION 3: HAZARDOUS IDENTIFICATION
Health: 2
Flammability: 0
Reactivity: 0
Special: 0
0 = minimal 1 = slight 2 = moderate 3 = serious 4 = severe
ROUTE(S) of Entry
Inhalation A single prolonged (hours) inhalation exposure is not likely to cause adverse
effects. Mists in high concentrations may cause irritation of nose and throat, cause
headache, nausea or drowsiness. Prolonged or repeated exposure may result in the
absorption of potentially harmful amounts of material.
Skin: A single prolonged exposure is not likely to result in the material being absorbed
through skin in harmful amounts. Repeated exposure may cause slight flaking,
tenderness and softening of skin.
Ingestion: Single dose oral toxicity is low. If more than several mouthfuls are swallowed,
abdominal discomfort, nausea or diarrhea may occur
.
Eyes: May cause minor irritation of eyes in some individuals. Corneal injury is unlikely.
Target Organs: None known
Effect of overexposure: Repeated excessive ingestion may cause central nervous system effects. No
carcinogenic effects have been seen in long-term animal studies. Birth defects are
unlikely. Exposure having no adverse effects on the mother should have no effect
HMIS
H # 2
F # 0
R # 0
PPE†
†Sec.8

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on the fetus. In animal studies, it has been shown not to interfere with reproduction.
Results of mutagenicity tests in-vitro (test tube) and in animals have been negative.
Signs and Symptoms of Exposure:
Redness and/or stinging sensation in eyes or on skin. Minor eye or skin irritation may
occur with some people.
Medical conditions Generally Aggravated by
Long-Term Exposure:
Chronic Effects: None known.
Carcinogenicity
NTP: None known
IARC Monographs: None known
OSHA regulations: None known
ACGIH None known
SECTION 4: FIRST AID MEASURES
Emergency and First Aid Procedures
Eye Contact: Flush eyes with large amounts of water for 15 minutes. If irritation persists, get
medical attention.
Skin Contact: Wash off in flowing water or shower. Wash contaminated clothing before reuse.
Ingestion: DO NOT induce vomiting immediately and GET IMMEDIATE MEDICAL
ATTENTION.
Never give anything by mouth to an unconscious person.
Inhalation: Remove to fresh air. If breathing has stopped, start artificial respiration. Seek
medical attention.
Note to Physicians: Treat symptomatically. No specific antidote. Supportive care. Treatment based
on judgment of physician in response to reactions of the patient.
Special Precautions/
Procedure. None known
SECTION 5: FIRE-FIGHTING MEASURES
NFPA
Flash Point: None
Flash Point Method: Not applicable

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Burning Rate: Not available Autoignition
Temperature: Not available
Flammable limits in air (% by
Volume)
LEL: Not available
UEL: Not available
Extinguishing Media:
Water for, fog, foam, CO2, dry chemical. Alcohol resistant foams (ATC
type) are best when available. Do not use direct water stream as it may
spread the fire.
Unusual Fire or Explosion
Closed containers may rupture or explode due to steam pressure build-up
when exposed to extreme heat.
Hazards:
Water may be used to cool closed containers. Do not use a direct water
stream on fire. Container may rupture from gas generation in a fire
situation.
Fire-Fighting Instructions:
Do not release runoff from fire control methods to sewers or waterways.
Fire Fighting Equipment:
Full protective equipment including positive-pressure, self-contained
breathing apparatus. During emergency conditions, overexposure to
decomposition products may cause a health hazard. Symptoms may not
be immediately apparent. Seek medical attention.
Unusual Fire Fighting
Keep people out of the area and isolate fire. Burning liquids may be moved
by flushing with water.
Procedures:
Do not use a direct water stream as it may spread fire.
SECTION 6: ACCIDENTAL RELEASE MEASURES
Spill/Leak Procedures: Recover useable material by convenient method; residual may be removed
by wipe or wet mop.
Small Spills Small spills should be absorbed with a suitable inert material (sand, earth,
clay, etc.) Remove the absorbed material and place in an appropriate
chemical waste container for disposal.
Large Spills: Large spills should be diked and pumped.
Containment: For large spills, dike far ahead of liquid spill for later disposal.
Regulatory Requirements: Follow applicable OSHA REGULATIONS (29 CFR 1910.120).