DryAIR 2100-DG Series User manual

Operators Manual
Water Heater Module
2100-DG Series
P.S. 1133-
Jan 27/05
DRYAIR INC.
606 Highway Drive,
St. Brieux, SK., Canada, SOK 3V0,
Tel: [phone]
Fax: [phone]
[email protected]
DRYAIR INC
1089 N. Main Street
Bowling Green, Ohio, USA, 43402
Tel: [phone]
Fax: [phone]
[email protected]

Table of Contents
Warranty Policies & Claim Procedures 1-1
Warranty Policies.............................................................................................................................................. 1-1
Warranty Claim Procedure................................................................................................................................. 1-2
Safety Concerns 2-1
General Safety Guidelines.................................................................................................................................. 2-1
Water Heater Module........................................................................................................................................ 2-1
HeatTransfer Fluid ........................................................................................................................................... 2-1
Material Safety Data Sheet - Boss Chill PG......................................................................................................... 2-2
Material Safety Data Sheet - Dowfrost* ............................................................................................................. 2-5
Setup 3-1
Required safety clearances ............................................................................................................................... 3-1
Elevation concerns ........................................................................................................................................... 3-1
Electrical requirements & connection ................................................................................................................. 3-2
Heat transfer fluid “HTF” .................................................................................................................................. 3-2
Primarycirculation lines .................................................................................................................................... 3-2
Fuel/Gas ........................................................................................................................................................... 3-3
Burner Setup .................................................................................................................................................... 3-3
Operation 4-1
Purging air from the “HTF” circulation system ................................................................................................... 4-1
Before firing the system .................................................................................................................................... 4-2
Startupfor Diesel/Light OilBurner:.................................................................................................................... 4-3
Gas Connection and Startup for Propane Burner: ............................................................................................... 4-5
Gas Connection and Startup for Natural Gas Burner ........................................................................................... 4-6
Cold start procedure ......................................................................................................................................... 4-7
Temperate start procedure................................................................................................................................. 4-8
Purging air from diesel/light oil fuel system ........................................................................................................ 4-10
Troubleshooting 5-1
Maintenance 6-1
Daily checklist .................................................................................................................................................. 6-1
Seasonal checklist ............................................................................................................................................ 6-1
Appendum 7-1
ImportantCertification & OperationalInformationDecals .................................................................................. 7-1
Non-pressure vessel decal ......................................................................................................................... 7-1
Certification & Heater Specifications .......................................................................................................... 7-2
Electricalschematic........................................................................................................................................... 7-3

Warranty Policy 1-1
Warranty Policies & Claim Procedures
DRYAIR Inc. (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 first retail purchaser.
Warranty Policies
Basic warranty 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 or Bowling Green, Ohio.
•Mileage is not covered. Any parts that are covered by an extended warranty published by DRYAIR are an exception to the Basic
Warranty policy and are to be warranted as per the details of the Extended Warranty Policy.
•Labor is covered as per DRYAIR flat labor 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 warranted for 90 days from the repair date. Bill of sale must accompany the warranty claim.
Extended warranty policy
Water heater heat exchanger
•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.
•Damage caused by operator abuse, negligence or improper operation.
•Damage resulting from improper voltage supply.
•Damage from improper installation. Installation done by 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).
Owners 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.
•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.
•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 to be tagged with warranty claim number and shipped prepaid to DRYAIR within 30 days.
Manufacturer obligations
•DRYAIR reserves the right to continually improve and/or change the product’s parts or specifications at any time without notice or
obligation.
•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.

Warranty Policy 1-2
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 Inc. 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 Depots
USA Canada
DRYAIR Inc DRYAIR Inc.
1095 N. Main Street 606 Highway Drive
Bowling Green, OH Box 126
43402 St. Brieux, SK
Ph. 1 [phone] S0K 3V0
Ph. 1 [phone]
•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 $45.00/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 - .5 hour
Plumbing components - 1 hour
Electric motor changes - 1 hour
Note: Other labour charges will be at the discretion of DRYAIR.

Safety Concerns 2-1
Safety Concerns
General Safety Guidelines
•Make certain that the operator reads and understands all the information in this manual.
•All unauthorized people must be kept away from the equipment when in operation.
•Maintain instructional and safety decals. Replace damaged decals.
•All guards must be in place when the equipment is in operation.
Water Heater Module
CAUTION! The water heater is a heating appliance.
•When dealing with any heating appliance, observe all posted warnings and cautions.
•Keep children and pets away from all piping and fuel accessories.
•The water heater housing panels must be kept closed when the system is operating. This prevents drafts from affecting water heater
operation.
Heat Transfer Fluid
Follow the following precautions and measures when working with “heat transfer fluid” (“DOWFROST* HTF” & “BOSS CHILL PG”).
Fluid handling precautions
•Ventilation ................... Good general ventilation should be sufficient for most conditions.
•Respiratory protection .No respiratory protection should be needed.
•Skin protection ............. For brief contact, no precautions other than clean body-covering clothing should be needed.
...................................... Use impervious gloves when prolonged or frequently repeated contact should occur.
•Eye Protection.............. Use safety glasses.
First aid measures
•Eyes............................. Flush eyes with plenty of water.
•Skin ............................. Wash off in flowing water or shower.
•Ingestion ..................... Induce vomiting if large amounts are ingested.
.................................... Consult medical personnel.
•Inhalation .................... Remove to fresh air if effects occur.
.................................... Consult a physician.
•Note to physician ........ No specific antidote.
.................................... Supportive care.
.................................... Treatment based on judgment of the physician in response to reactions of the patient.
For complete “heat transfer fluid” information, refer to the Material Safety Data Sheets for “Dowfrost HTF” & “Boss Chill PG” on
the following page.

Safety Concerns 2-2
Material Safety Data Sheet - Boss Chill PG
BOSS CHILL PG
MSDS
Canadian Centre for Occupational Health and Safety
Issue: 2001-4 (November, 2001)
***MATERIAL SAFETY DATA***
1. CHEMICAL PRODUCT & COMPANY IDENTIFICATION
PRODUCT NAME:...................................... PROPYLENE GLYCOL INDUSTRIAL
PRODUCT CODE: ....................................... 70511
EFFECTIVE DATE:...................................... 05/23/03 DATE PRINTED 10/09/03 MSD: 000248
COMPANY IDENTIFICATION: ............... The Dow Chemical Company, Midland, MI 48674
EMERGENCY TELEPHONE NUMBER:.24-HOUR EMERGENCY PHONE NUMBER 989-636-4400
......................................................................... Customer Information Center: 800-258-2436
2. COMPOSITION/INFORMATION ON INGREDIENTS
Propylene glycol CAS# 000057-55-6 99%
3. HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW: ....................... Colorless, odorless liquid. Toxic fumes released in fire situations.
POTENTIAL HEALTH EFFECTS: ..................(See Section 11 for toxicological data.)
EYE:.........................................................................May cause slight transient (temporary) eye irritation. Corneal injury is unlikely. Mists may
cause eye irritation.
SKIN:........................................................................Prolonged contact is essentially nonirritating to skin. A single prolonged skin exposure is not
likely to result in the material being absorbed through skin in harmful amounts. Repeated
exposures may cause flaking and softening of skin. May be absorbed in potentially harmful
amounts when applied in large quantities to severe burns (second or third degree) over large
areas of the body as part of a cream or other topical application. Absorption under such
circumstances can elevate serum osmolality and may result in osmotic shock.
INGESTION: ..........................................................Single dose oral toxicity is considered to be extremely low. No hazards anticipated from
swallowing small amounts incidental to normal handling operations.
INHALATION: ......................................................At room temperature, vapors are minimal due physical properties. Mists may cause irritation
of upper respiratory tract.
SYSTEMATIC: ......................................................(OTHER TARGET ORGAN) EFFECTS: Repeated excessive ingestion may cause central
nervous system effects.
CANCER INFORMATION:.................................Did not cause cancer in long-term animal studies.
TERATOLOGY (BIRTH DEFECTS): ...............Birth defects are unlikely. Exposures having no adverse effects on the mother should have
no effect on the fetus.
REPRODUCTIVE EFFECTS: .............................In animal studies, has been shown not to interfere with reproduction.
4. FIRST AID
EYE:.........................................................................Flush eyes with plenty of water.
SKIN:........................................................................Wash off in flowing water or shower.
INGESTION: ..........................................................No adverse effects anticipated by this route of exposure incidental to proper industrial
handling.
INHALATION: ......................................................Remove to fresh air if effects occur. Consult a physician
NOTE TO PHYSICIAN:......................................No specific antidote. Supportive care. Treatment based on judgment of the physician in
response to reactions of the patient.
5. FIRE FIGHTING MEASURES
FLASH POINT: .................... 218°F, 103°C
METHOD USED:................. PMCC
FLAMMABLE LIMITS ..... LFT: 2.6%
LFL:......................................... 2.6%
UFL: ........................................ 12.5%
HAZARDOUS COMBUSTION PRODUCTS: During a fire, smoke may contain the original material in addition to unidentified toxic
and/or irritating compounds. Hazardous combustion products may include and are not limited to: aldehydes, carbon monoxide.
OTHER FLAMMABILITY INFORMATION: Violent steam generation or eruption may occur upon application of direct water stream
to hot liquids. Spills of these organic liquids on hot fibrous insulations may lead to lowering of the autoignition temperatures
possibly resulting in spontaneous combustion.
EXTINGUISHING MEDIA: Water fog or fine spray, carbon dioxide, dry chemical, foam. Alcohol resistant foams (ATC type) are
preferred if available. General purpose synthetic foams (including AFFF) or protein foams may function, but much less effectively.
Do not use direct water stream. Will spread fire.
MEDIA TO BE AVOIDED: Do not use direct water stream.
FIRE FIGHTING INSTRUCTIONS: Keep people away. Isolate fire area and deny unnecessary entry. Burning liquids may be moved by
flushing with water to protect personnel and minimize property damage. Burning liquids may be extinguished by dilution with water.
Do not use direct water stream. May spread fire.
PROTECTIVE EQUIPMENT FOR FIRE FIGHTERS: Wear positive-pressure, self-contained breathing apparatus (SCBA) and protective
fire-fighting clothing (including fire-fighting helmet, coat, pants, boots, and gloves). If protective equipment is not available or not
used, fight fire from a protected location or safe distance.

Safety Concerns 2-3
6. ACCIDENTAL RELEASE MEASURE (See Section 15 for Regulatory Information)
PROTECT PEOPLE: Isolate area.
PROTECT THE ENVIRONMENT: Contain liquid to prevent contamination of soil, surface water or ground water.
CLEANUP: For small spills, clean up with absorbent material. Collect material in suitable and properly labeled open containers. For
large spills, dike and pump into suitable and properly labeled containers.
7. HANDLING AND STORAGE
HANDLING: Product handled hot may require additional ventilation or local exhaust. Product on surfaces can cause slippery
conditions.
STORAGE: Keep containers tightly closed when not in use. Store in stainless steel, aluminum, Plasite 3066 lined containers or 316
stainless steel. Store below 121°C, 250°F.
8. EXPOSURE CONTROLS/PERSONAL PROTECTION
ENGINEERING CONTROLS: Provide general and/or local exhaust ventilation to control airborne levels below exposure guidelines.
PERSONAL PROTECTIVE EQUIPMENT
EYE/FACE PROTECTION: Use safety glasses. Safety glasses should be sufficient for most operations; however, for misty operations
wear chemical goggles.
SKIN PROTECTION: For brief contact, no precautions other than clean body-covering clothing should be needed. Use impervious
gloves when prolonged or frequently repeated contact could occur.
RESPIRATORY PROTECTION: Atmospheric levels should be maintained below the exposure guideline. When respiration protection
is required for certain operations, use an approved air-purifying respirator. In misty atmospheres, use an approved mist respirator.
EXPOSURE GUIDELINE(S): Propylene glycol: AIHA WEEL is 50 ppm total, 10 mg/m3 aerosol only.
9. PHYSICAL AND CHEMICAL PROPERTIES
APPEARANCE:........................ Colorless liquid
ODOR: ......................................... Odorless
VAPOR PRESSURE: ................ 0.08 mmHg @ 20°C, 68°F
VAPOR DENSITY: ................... 2.62
BOILING POINT:..................... 370°F, 188°C
SOLUBILITY IN WATER: .... Complete
SPECIFIC GRAVITY: .............. 1.038 @ 20/20°C, 68°F
10. STABILITY AND REACTIVITY
CHEMICAL STABILITY: Stable.
CONDITIONS TO AVOID: Avoid temperatures above 121°C/250°F. Product can decompose at elevated temperatures.
INCOMPATIBILITY WITH OTHER MATERIALS: Avoid contact with oxidizing materials.
HAZARDOUS DECOMPOSITION PRODUCTS: When available oxygen is limited, as in a fire or heated to very high temperatures by
hot wire or plate, carbon monoxide and other hazardous compounds such as aldehydes might be generated,
HAZARDOUS POLYMERIZATION: Will not occur.
11. TOXICOLOGICAL INFORMATION (See Section 3 for Potential Health Effects. For detailed toxicological data, write or call the address
or non-emergency number shown in section 1)
SKIN: the LD50 for skin absorption in rabbits is greater than 10,000 mg/kg.
INGESTION: The oral LD50 for Female rats is about 20,000-34,000mg/kg.
MUTAGENICITY (EFFECTS ON GENETIC MATERIAL): Results of in vitro (test tube) mutagenicity tests have been negative.
Results of mutagenicity tests in animals have been negative.
12. ECOLOGICAL INFORMATION (For detailed Ecological data, write or call the address or non-emergency number shown in Section 1)
ENVIRONMENTAL FATE
MOVEMENT AND PARTITIONING: Based largely or completely on information for similar material(s), i.e. propylene glycol.
Bioconcentration potential is low (BCF less than 100 or Log Pow less than 3). Log octanol/water partition coefficient (log Pow) is
-0.92. Henry’s Law Constant (H) is 1.2E-8 atm.m3/mole.
DEGRADATION AND PERSISTENCE: Based largely or completely on information for similar material(s), i.e. propylene glycol.
Biodegradation under aerobic static laboratory conditions is high (BOD20 or BOD28/ThOD greater than 40%). Biodegradation is
expected to be achieved in a secondary waste-water treatment plant. 5-Day biochemical oxygen demand (BOD5) is 1.16 p/p. 20-
Day biochemical oxygen demand (BOD20) is 1.45 p/p. Theoretical oxygen demand (ThOD) is calculated to be 1.68 p/p.
Inhibitory concentration (IC50) in OECD Activated Sludge Respiration Inhibition Test (OECD Test No. 209) is greater than 1gm/L.
Degradation is expected in the atmospheric environment within minutes to hours.
ECOTOXICITY: Based largely or completely on information for similar material(s), i.e. propylene glycol. Material is practically
non-toxic to aquatic organisms on an acute basis (LC50 greater than 100 mg/L in most sensitive species).
Acute LC50 for fathead minnow (Pimephales promelas) is 46500-54900 mg/L.
Acute LC50 for guppy (Poecilia reticulata) is greater than 10000 mg/L.
Acute LC50 for water flea Daphnia magna is 4850-34400 mg/L.
Acute LC50 for rainbow trout (Oncorhynchus mykiss) is 44 ml/L (about 44000 mg/L).

Safety Concerns 2-4
13. DISPOSAL CONSIDERATION (See Section 15 for Regulatory Information)
DISPOSAL: DO NOT DUMP INTO ANY SEWERS, ON THE GROUND OR INTO ANY BODY OF WATER. All disposal methods must
be in compliance with all Federal, State/Provincial and local laws and regulations. Regulations may vary in different locations.
Waste characterizations and compliance with applicable laws are the responsibility solely of the waste generator. THE DOW
CHEMICAL COMPANY HAS NO CONTROL OVER THE MANAGEMENT PRACTICES OR MANUFACTURING PROCESS OF
PARTIES HANDLING OR USING THIS MATERIAL. THE INFORMATION PRESENTED HERE PERTAINS ONLY TO THE
PRODUCT AS SHIPPED IN ITS INTENDED CONDITION AS DESCRIBED IN MSDS SECTION 2 (Composition/Information on
Ingredients).
FOR UNUSED & UNCONTAMINATED PRODUCT, the preferred options include sending to a licensed, permitted: recycler,
reclaimer, incinerator or waste water treatment system.
As a service to its customers, Dow can provide names of information resources to help identify waste management companies and
other facilities which recycle, reprocess or manage chemicals or plastics, and that manage used drums. Telephone Dow’s Customer
Information Centre at 800-258-2436 or 989-832-1556 for further details.
14. TRANSPORT INFORMATION
DEPARTMENT OF TRANSPORT:
This product is not regulated by D.O.T. when shipped domestically by land
CANADIAN TDG INFORMATION:
For TDG regulatory information, if required, consult transportation regulations, product shipping papers, or your Dow representative.
15. REGULATORY INFORMATION (Not meant to be all-inclusive—selected regulations represented)
NOTICE: The information herein is presented in good faith and believed to be accurate as of the effective date shown above. However,
no warranty, express or implied is given. Regulatory requirements are subject to change and may differ from one location to
another; it is the buyer’s responsibility to ensure that its activities comply with federal, state or provincial, and local laws. The
following specified information is made for the purpose of complying with numerous federal, state or provincial, and local laws and
regulations. See other sections for health and safety information.
U.S. REGULATION
SARA 313 INFORMATION: To the best of our knowledge, this product contains no chemical subject to SARA Title III Section 313
supplier notification requirements.
SARA HAZARD CATEGORY: This product has been reviewed according to the EPA “Hazard Categories” promulgated under
Sections 311 and 312 of the Superfund Amendment and Reauthorization Act of 1986 (SARA Title III) and is considered, under
applicable definitions, to meet the following categories: Not to have met any hazard category.
TOXIC SUBSTANCES CONTROL ACT (TSCA):
All ingredients are on the TSCA inventory or are not required to be listed on the TSCA inventory.
STATE RIGHT-TO-KNOW: The following product components are cited on certain state lists as mentioned. Non-listed
components may be shown in the composition section of the MSDS.
REGULATORY INFORMATION:
CHEMICAL NAME CAS NUMBER LIST
1, 2-PROPANEDIOL 00057-55-6 PA1
PA1=Pennsylvania Hazardous Substance (present at greater than or equal to 1.0%).
OSHA HAZARD COMMUNICATION STANDARD:
This product is not a “Hazardous Chemical” as defined by the OSHA Hazard Communication Standard, 29 CFR 1910.1200.
CANADIAN REGULATIONS
WHMIS INFORMATION: The Canadian Workplace Hazardous Materials Information System (WHMIS) classification for this
product is: This product is not a “Controlled Product” under WHMIS.
16. OTHER INFORMATION
NATIONAL FIRE PROTECTION ASSOCIATION (NFPA) RATINGS:
Health 0
Flammability 1
Reactivity 0
MSDS STATUS: Revised Section 16.
* or ® Indicates a Trademark of The Dow Chemical Company
The Information Herein Is Given In Good Faith, But No Warranty, Express or Implied, Id Made. Consult The Dow Chemical
Company For Further Information.

Safety Concerns 2-5
Material Safety Data Sheet - Dowfrost*
DOWFROST* HEAT TRANSFER FLUID
MSDS
Canadian Centre for Occupational Health and Safety
Issue: 05/09/2002
Received: 09/10/2003
***MATERIAL SAFETY DATA***
1. CHEMICALPRODUCT&COMPANYIDENTIFICATION
PRODUCT NAME:...................................... DOWFROST* HEAT TRANSFER FLUID
MSDS#: .......................................................... 1376
EFFECTIVE DATE:...................................... 05/09/2002
COMPANY IDENTIFICATION: ............... The Dow Chemical Company
......................................................................... Midland, MI 48674
EMERGENCY TELEPHONE NUMBER:.24-HOUR EMERGENCY TELEPHONE NUMBER: [phone]
......................................................................... Customer Information Number: 1-800-258-2436
2. COMPOSITION/INFORMATION ON INGREDIENTS
Propylene glycol CAS# 000057-55-6 > 99%
Demineralized water CAS# 007732-18-5 < 5%
Dipotassium hydrogen phosphate CAS#007758-11-4 < 5%
3. HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW: ............................... Colorless, liquid, mild odor. No significant hazards for emergency response are known.
POTENTIAL HEALTH EFFECTS ................... (See Section 11 for toxicological information and additional information about potential
health effects.)
EFFECTS OF SINGLE ACUTE OVEREXPOSURE
INHALATION: ......................................................At room temperature, exposure to vapor is minimal due to low volatility. Mist may
cause irritation of upper respiratory tract (nose and throat).
EYE CONTACT: ...................................................May cause slight temporary eye irritation. Corneal injury is unlikely.
SKIN CONTACT: ..................................................Prolonged contact is essentially nonirritating to skin. Repeated contact may cause
flaking and softening of skin.
SKIN ABSORPTION:............................................ Prolonged skin contact is unlikely to result in absorption of harmful amounts.
SWALLOWING: ....................................................Very low toxicity if swallowed. Harmful effects not anticipated from swallowing small
amounts
POTENTIAL ENVIRONMENTAL EFFECTS (See Section 12 for Ecological Information)
4. FIRST AID
INHALATION: ......................................................Move person to fresh air; if effects occur, consult a physician.
EYE:.........................................................................Flush eyes thoroughly with water for several minutes. Remove contact lenses after the initial
1-2 minutes and continue flushing for several additional minutes. If effect occur, consult a
physician, preferably an ophthalmologist.
SKIN:........................................................................Wash skin with plenty of water
INGESTION: ..........................................................No emergency medical treatment necessary.
NOTE TO PHYSICIAN:......................................No specific antidote. Treatment of exposure should be directed at the control of symptoms
and the condition of the patient.
5. FIRE FIGHTING MEASURES
FLAMMABLE PROPERTIES (Refer to section 9, PHYSICAL AND CHEMICAL PROPERTIES)
EXTINGUISHING MEDIA: Water fog or fine spray. Dry chemical fire extinguishers. Carbon dioxide fire extinguishers. Foam. Do not
use direct water stream. May spread fire. Alcohol resistant foams (ATC type) are preferred. General purpose synthetic foams
(including AFFF) or protein foams may function, but will be less effective.
FIRE FIGHTING PROCEDURES: Keep people away. Isolate fire area and deny unnecessary entry. Use water spray to cool fire exposed
containers and fire affected zone until fire is out and danger of reignition has passed. Fight fire from a protected location or safe
distance. Consider the use of unmanned hose holders or monitor nozzles. Immediately withdraw all personnel from the area in case
of rising sound from venting safety device or discoloration of the container. Burning liquids may be extinguished by dilution with
water. Do not use direct water stream. May spread fire. Move container from fire area if this is possible without hazard. Burning
liquids may be moved by flushing with water to protect personnel and minimize property damage.
SPECIAL PROTECTIVE EQUIPMENT FOR FIRE FIGHTERS: Wear positive-pressure self-contained breathing apparatus (SCBA) and
protective fire-fighting clothing (including fire-fighting helmet, coat, pants, boots, and gloves). If protective equipment is not
available or not used, fight fire from a protected location or safe distance.
UNUSUAL FIRE AND EXPLOSION HAZARDS: Container may rupture from gas generation in a fire situation. Violent steam
generation or eruption may occur upon application of direct water stream to hot liquids. Liquid mist of this product can burn.
Flammable concentrations of vapor can accumulate at temperatures above flash point; see Section 9.
HAZARDOUS COMBUSTION PRODUCTS: During a fire, smoke may contain the original material in addition to combustion products
of varying composition which may be toxic and/or irritating. Combustion products may include and are not limited to: Carbon
monoxide. Carbon dioxide.

Safety Concerns 2-6
6. ACCIDENTAL RELEASE MEASURE
SMALL SPILLS: Absorb with materials such as: cat litter, sawdust, vermiculite, Zorb-all. Collect in suitable and properly labeled
containers.
LARGE SPILLS: Dike area to contain spill. Recover spilled material if possible. See Section 13, Disposal Considerations for additional
information.
PERSONAL PRECAUTIONS: Use appropriate safety equipment. For additional information, refer to Section 8, Exposure Controls and
Personal Protection.
ENVIRONMENTAL PRECAUTIONS: Prevent from entering into soil, ditches, sewers, waterways and/or groundwater. See Section 12,
Ecological Information.
7. HANDLING AND STORAGE
HANDLING
GENERAL HANDLING: See Section 8, EXPOSURE CONTROLS AND PERSONAL PROTECTION.
VENTILATION: Provide general and/or local exhaust ventilation to control airborne levels below the exposure guidelines.
OTHER PRECAUTIONS: Spills of these organic materials on hot fibrous insulations may lead to lowering of the autoignition
temperatures possibly resulting in spontaneous combustion.
STORAGE: 121°C ( 250° F). Do not store in: galvanized steel.
8. EXPOSURE CONTROLS AND PERSONAL PROTECTION
EXPOSURE LIMITS
COMPONENT EXPOSURE LIMITS SKIN FORM
Propylene glycol 10mg/m3 TWA8 AIHA WEEL Aerosol
50 ppm TWA8 AIHA WEEL Total Particulate fume
In the Exposure Limits Chart above, if there is no specific qualifier (i.e., Aerosol) listed in the Form Column for a particular limit, the
listed limit includes all airborne forms of the substance that can be inhaled.
PERSONAL PROTECTION
RESPIRATORY PROTECTION: Atmospheric levels should be maintained below the exposure guideline.
PROTECTION: When respiratory protection is required for certain operations, use an approved air-purifying respirator. In dusty or
misty atmospheres, use an approved particulate respirator.
EYE PROTECTION: Use safety glasses.
OTHER PROTECTIVE EQUIPMENT: No precautions other than body-covering clothing should be needed. Use gloves chemically
resistant to this material.
9. PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE:................. Liquid
APPEARANCE:........................ Colorless
ODOR: ......................................... Mild
FLASH POINT - Closed Cup: 102°C 216°F Tag closed cup ASTM D 56 (Propylene glycol)
FLAMMABLE LIMITS IN AIR: Lower 2.6%(V) 100°C (Propylene glycol)
...................................................... Upper 12.5%(V) 130°C (Propylene glycol)
AUTOIGNITION TEMP: ...... 416°C780°F
VAPOR PRESSURE: ................ 0.7 mmHg @ 20°C, 68°F
BOILING POINT (760 mmHg): 162°C323°F
VAPOR DENSITY (air=1):..... 2.6
SPECIFIC GRAVITY (H2O=1):1.05 20°C/20°C
FREEZING POINT: ................. <=-51°C<=-60°F
MELTING POINT:................... Not applicable (for liquids)
SOLUBILITY IN WATER (by weight): 100% 20°C
pH:................................................ 9-11 (5% solution in water)
EVAPORATION RATE (Butyl Acetate=1): 0.07
PERCENT VOLATILES:........ 98 Wt%
10. STABILITY AND REACTIVITY
STABILITY/INSTABILITY: Thermally stable at recommended temperatures and pressures.
CONDITIONS TO AVOID: Product can oxidize at elevated temperatures. Generation of gas during decomposition can cause
pressure in closed systems
INCOMPATIBLE MATERIALS: Avoid contact with: Strong acids. Strong bases. Strong oxidizers.
THERMAL DECOMPOSITION: Decomposition products depend upon temperature, air supply and the presence of other materials.
Decomposition products can include and are not limited to: Aldehydes. Alcohols. Ethers.
HAZARDOUS POLYMERIZATION: Will not occur

Safety Concerns 2-7
11. TOXICOLOGICAL INFORMATION
ACUTE TOXICITY: Peroral: Rat; female; LD50 = 20300 mg/kg
Percutaneous: Based on information for a similar material:
Rabbit; LD50 = > 10000 mg/kg
DEVELOPMENT TOXICITY: Contains component(s) which did not cause birth defects or any fetal effects in lab animals., The
component(s) is/are:,
REPRODUCTIVE TOXICITY: Contains component(s) which did not interfere with reproduction in animal studies., Contains
component(s) which did not interfere with fertility in animal studies., The component(s) is/are:, Propylene glycol.
CHRONIC TOXICITY AND CARCINOGENICITY: Similar formulations did not cause cancer in laboratory animals.
GENETIC TOXICOLOGY:In Vitro: In Vitro mutagenicity studies were negative.
In Vivo: Mutagenicity studies in animals were negative for component(s) tested
SIGNIFICANT DATA WITH POSSIBLE RELEVANCE TO HUMANS: In rare cases, repeated excessive exposure to propylene glycol
may cause central nervous system effects.
12. ECOLOGICAL INFORMATION
ENVIRONMENTAL FATE: Based largely or completely on information for: Propylene glycol. Material is readily biodegradable.
Passes OECD test(s) for ready biodegradability. Degradation is expected in the atmospheric environment within minutes to hours.
ECOTOXICITY: Based largely or completely on information for: Propylene glycol. Material is practically non-toxic to aquatic
organisms on an acute basis (LC50/EC50 . 100mg/L in most sensitive species tested).
FURTHER INFORMATION: Based largely or completely on information for: Propylene glycol. Bioconcentration potential is low
(BCF < 100 or Log Pow < 3). Potential for mobility in soil is very high (Koc between 0 and 50).
13. DISPOSAL CONSIDERATION (See Section 15 for Regulatory Information)
DISPOSAL: DO NOT DUMP INTO ANY SEWERS, ON THE GROUND OR INTO ANY BODY OF WATER. All disposal practices
must be in compliance with all Federal, State/Provincial and local laws and regulations. Regulations may vary in different locations.
Waste characterizations and compliance with applicable laws are the responsibility solely of the waste generator. THE DOW
CHEMICAL COMPANY HAS NO CONTROL OVER THE MANAGEMENT PRACTICES OR MANUFACTURING PROCESS OF
PARTIES HANDLING OR USING THIS MATERIAL. THE INFORMATION PRESENTED HERE PERTAINS ONLY TO THE
PRODUCT AS SHIPPED IN ITS INTENDED CONDITION AS DESCRIBED IN MSDS SECTION 2 (Composition/Information on
Ingredients). FOR UNUSED & UNCONTAMINATED PRODUCT, the preferred options include sending to a licensed, permitted:
recycler, reclaimer, incinerator or other thermal destructive device. As a service to its customers, Dow can provide names of
information resources to help identify waste management companies and other facilities which recycle, reprocess or manage
chemicals or plastics, and that manage used drums. Telephone Dow’s Customer Information Centre at 1-800-258-2436 or 0-989-
832-1556 (U.S.), or 1-800-331-6451 (Canada) for further details.
14. TRANSPORT INFORMATION
NON-BULK Proper Shipping Name: NOT REGULATED
BULK Proper Shipping Name: NOT REGULATED
The information is not intended to convey all specific regulatory or operational requirements/information relating to this product. Additional
transportation system information can be obtained through an authorized sales or customer service representative. It is the responsibility of
the transportation organization to follow all applicable laws, regulations and rules relating to the transportation of the material.
15. REGULATORY INFORMATION (Not meant to be all-inclusive—selected regulations represented)
FEDERAL/NATIONAL
OSHS Hazard Communication Standard
This product is not a “Hazardous Chemical” as defined by the OSHA Hazard Communication Standard, 29 CFR 1910.1200.
Superfund Amendments and Reauthorization Act of 1986 Title III (Emergency Planning and Community Right To Know Act) Section 313
To the best of our knowledge this product does not contain chemicals at levels which require reporting under this statute.
Superfund Amendments and Reauthorization Act of 1986 Title III (Emergency Planning and Community Right To Know Act) Section 302
To the best of our knowledge this product does not contain chemicals at levels which require reporting under this statute.
Superfund Amendments and Reauthorization Act of 1986 Title III (Emergency Planning and Community Right To Know Act) Section 311 & 312
Delayed (Chronic) Health Hazard: NO
Fire Hazard: NO
Immediate (Acute) Health Hazard: NO
Reactive Hazard: NO
Sudden Release of pressure Hazard: NO
Toxic Substance Control Act (TSCA)
All components of this product are on the TSCA Inventory or are exempt from TSCA Inventory requirements.
CEPA - Domestic Substances List (DSL)
All substances contained in this product are listed on the Canadian Domestic Substances List (DSL) or are not required to be listed.
European Inventory of Existing Commercial Chemical Substances (EINECS)
The components of this product are on the EINECS inventory or are exempt from EINECS inventory requirements.

Safety Concerns 2-8
STATE/LOCAL
Pennsylvania (Worker and Community Right To Know Act): Pennsylvania Hazardous Substances List and/or Pennsylvania
Environmental Hazardous Substance List:
The following product components are cited in the Pennsylvania Hazardous Substance List and/or the Pennsylvania Environmental
Substance List, and are present at levels which require reporting.
COMPONENT CAS# AMOUNT
Propylene glycol 57-55-6 96.0000 %
Pennsylvania (Worker and Community Right To Know Act): Pennsylvania Special Hazardous Substances List:
To the best of our knowledge this product does not contain chemicals at levels which require reporting under this statute.
California Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1986)
This product contains no listed substances known to the State of California to cause cancer, birth defects of other reproductive harm,
at levels which would require a warning under the statute.
California SCAQMD Rule 443.1 (South Coast Air Quality Management District Rule 443.1, Labeling of Material Containing Organic
Solvents).
VOC: Vapor pressure 0.66 mmHg @ 20°C
1002 g/l VOC
1030 g/l less water and less exempted solvents
This section provides selected regulatory information on this product including its components. This is not intended to include all
regulations. It is the responsibility of the user to know and comply with all applicable rules, regulations and laws relating to the product being
used.
16. OTHER INFORMATION
ADDITIONAL INFORMATION
Additional information on this and other Dow products may be obtained by visiting our web page at www.dow.com.
Additional information on this product may be obtained by calling Dow’s Customer Information Group at 1-800-258-2436 (U.S.) or
1-800-331-6451 (Canada)
HAZARD RATING SYSTEM
NFPA rating for this product are: H - 0F - 0 R - 0
The ratings are part of a specific hazard communication program and should be disregarded where individuals are not trained in the use
of this hazard rating system. You should be familiar with the hazard communication programs applicable to your workplace.
RECOMMENDED USES AND RESTRICTIONS
Intended as a heat transfer fluid for closed-loop systems.
Dow recommends that you use this product in a manner consistent with the listed use. If your intended use is not consistent with
Dow’s Stated use, please contact Dow’s Customer Information Group at 1-800-258-2436 (U.S.) or 1-800-331-6451 (Canada) for
more information.
REVISION
Version: 4.1
Revision: 05/09/2002
Most recent revision(s) are noted by the bold, double bars in the left-hand margin throughout this document.
LEGEND
Bacteria/NA Non Acclimated Bacteria
FFire
HHealth
IHG Industrial Hygiene Guidelines
N/A Not available
NFPA National Fire Protection Association
OOxidizer
RReactivity
TS Trade secret
VOL/VOL Volume/Volume
WWater reactive
W/W Weight/Weight
NOTICE: Dow urges each customer or recipient of this MSDS to study it carefully and consult appropriate expertise, as
necessary or appropriate, to become aware of and understand the data contained in this MSDS and any hazards associated with
the product. The information herein is provided in good faith and believed to be accurate as of the effective date shown above.
However, no warranty, express or implied, is given., Regulatory requirements are subject to change and may differ between
various locations. It is the buyer’s/user’s responsibility to ensure that its activities comply with all federal, state, provincial or
local laws. The information presented here pertains only to the product as shipped. Since conditions for use of the product
are not under the control of Dow, it is the buyer’s/user’s duty to determine the condition necessary for the safe use of this
product., Due to the proliferation of sources for information such as manufacturer-specific MSDSs, Dow is not and cannot be
responsible for MSDSs obtained from any source other than Dow. If you have obtained a Dow MSDS from a non-Dow source or
if you are not sure that a Dow MSDS is current, please contact Dow for the most current version.

Setup 3-1
Setup
The positioning of all the system components on the site
will be influenced by a number of factors. Please read all of
the “Setup” section before beginning.
Be sure to observe all local electrical codes and fire
regulations when positioning the trailer.
Required safety
clearances
The “water heater module” is a heating appliance, therefore
safe heat and exhaust clearances must be observed.
•Maintain 24” of clearance on all sides of the unit (1-1).
•Maintain 36” of clearance (2-1) on all sides of the flue
pipe and chimney cap
•Confirm that the water heater module air intakes (1-2)
on three sides of the water heater module, are free of
any obstructions.
Elevation concerns
Do not place any “portable heat exchangers” higher than
the top level (2-2) of the heat transfer fluid fill tank . If this
is not observed, the following can occur:
•Insufficient fluid in the system
Fluid will drain back to the heat transfer fill tank from
the over-elevated fluid lines when the pump is shut off.
The heat transfer fill tank will show adequate fluid but,
when the pump is started, extra fluid will be required to
recharge the over-elevated fluid lines and portable heat
exchangers and the system will then have insufficient
fluid in the reservoir.
•Fluid overflow
If fluid is added to maintain proper fluid levels while
the pump is running, overflow at the fill tank will occur
when the pump is shut off. This would occur because
of drain back from the over-elevated fluid lines.
2-1
2-2
1-2
1-2
1-1
1 - water heater module - top view
2 - water heater module - control side view
1-2

Setup 3-2
Electrical requirements & connection
When determining the “water heater module” location on site, consider setting up in close proximity to the electrical power supply.
Note: This applies mainly to systems not equipped with a dedicated
generator.
•The “water heater module” main feed wiring must be adequately sized to
carry the minimum ampacity shown on the water heater cabinet’s rating
label. All electrical connections, connectors and wire must be CSA
approved and installed according to local laws and codes.
•Before making any electrical connections, be sure that the electric power
supply is off.
•The “water heater module” requires 110/220VAC power. The module is
factory wired so that the only connection to be made is a 110/220VAC
main feed to the circuit breakers inside the water heater cabinet.
•The main feed wiring must be adequately sized to carry the minimum
ampacity shown on the water heater cabinet’s rating label.
•All electrical connections, connectors and wire must be CSA approved,
and installed according to local laws and codes.
•A 4-wire hookup (3-1) is required for all systems to work properly.
Warranty is void if the wiring hookup is not done correctly.
Heat transfer fluid “HTF”
CAUTION! At no time should you use automobile antifreeze in your DRYAIR system. The use of automobile antifreeze will void your DRYAIR
warranty.
•The heat transfer fluid “HTF” level should show no more than 1/4 on the gauge (cold fluid) at start-up. As the “HTF” warms to
operating temperature, fluid expansion will raise the level to 1/2 or 3/4 on the gauge (depending on the total volume of fluid in the
circulation system).
Heat transfer fluid specifications
•DRYAIR pre-mixed “HTF” fluid is made up of 50% “Dowfrost ® HTF”
or “Boss Chill PG” and 50% water*, by weight - freeze protection down
to -28°F (-33°C).
•The “glycol/water mixture chart”, to the right, will provide you with more
information on the proper mixture for your area.
•“Dowfrost ® HTF” or “Boss Chill PG” must be used. The pure
“Dowfrost ® HTF” or “Boss Chill PG” heat transfer fluid used in the
DRYAIR system is made up of a blend of 95-97% Propylene glycol, <5%
Dipotassium phosphate and deionized water (see Safety Concerns section
- MSDS sheets for additional information.
•Soft water with a neutral pH level (#7) must be used.
CAUTION! Whenever coupling or uncoupling the kamlocks, make sure that the
isolation valves are closed and the pump is turned off. Failure to do so may put
you at risk of injury from eye or skin exposure to hot glycol.
Primary circulation lines
•If possible, position the primary circulation lines out of high traffic
areas.
•Connect the primary circulation lines to the “supply” (5-1) and
“return” (5-2) isolation valves on the water heater. Isolation valves
and kamlock quick couplers are attached to both ends of the primary
circulation lines to enable quick coupling. This also allows the isolation
of the primary lines while retaining the heat transfer fluid “HTF” in
the lines. Plus... setup and dismantling of the circulation system is
muchquicker.
3 - water heater module
3-1
5 - primary circulation line connected to the water heater module
5-2
5-1
By Mass By Volume °F °C
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
Percent Propylyne Glycol Freezing Point
4 - glycol/water mixture chart

Setup 3-3
Burner Setup
The model “2100-DG” series water heaters come with a diesel/light fuel oil supply package and a gas
train. The Diesel/Light Oil Burner is installed on the heat exchanger from factory and the burner
settings are depending on which model was purchased (2100-DG-0600 or 2100-DG-0900).
Burner Identification
Riello’s own identification label (8-1, 9-1, 10-1) located on the top flange of the burner’s main chassis
plate and identifies if the burner is for use with “Diesel/Light Oil”, “Natural Gas” or “Propane Gas”.
White vinyl labels are also located on both the burners main chassis plate (8-2, 9-2, 10-2) and to the
top of the burner cover hood (8-3, 9-3, 10-3).
•Black lettering = diesel/light oil burner (fig. 8)
•Blue lettering = natural gas burner (fig. 10)
•Red lettering = propane gas burner (fig. 9)
If the installed burner is the correct fuel type to be used, proceed to the applicable section below:
•See “Startup for Diesel/Light Oil Burner” in the Operation section of the Operators Manual.
•See “Startup for Propane Gas Burner” in the Operation section of the Operators Manual.
•See “Startup for Natural Gas Burner” in the Operation section of the Operators Manual.
If a burner of different format is required, it must be obtained from your DRYAIR Inc. distributor.
The existing burner must then be removed before the alternate burner can be installed. See below for
alternate burner removal and installation.
6 - propane secondary regulator
Fuel/Gas
See “Burner Setup - Burner Identification” - below for burner type.
Diesel/Light Oil
•Only clean #1 or #2 diesel fuel or light heating oil is suitable for use in the system
•The “water heater module” comes equipped with its own tank, so there are no fuel line
hookups required.
•The fuel system utilizes a two-pipe system to ensure efficient fuel supply to the burner.
Contact your local fuel supplier to inform them of the requirements.
Propane Gas
A supply of “Propane Vapor” should be connected to the inlet of the secondary regulator (6-1) at
an approximate pressure of 12 PSI.
Provide your local Propane supplier with BTUH input requirements to ensure an adequate volume
of vaporized propane even in the coldest ambient conditions.
Natural Gas
A supply of “Natural Gas” should be connected to the manual gas train supply valve (7-1) at a
pressure of approximately 12-14” W.C.
Provide your local Natural Gas Utility Company with BTUH input and pressure requirements to
ensure adequate volume of gas at the correct pressure range
8 - Riello I.D. label & diesel/light
oil vinyl burner I.D. labels
7 - natural gas manual
gas train supply valve
9 - propane gas fuel type &
burner type vinyl labels
10 - natural gas fuel type &
burner type vinyl labels
6-1
7-1
8-1 8-3 8-2
9-3 9-2
10-2
10-3
9-1
10-1

Setup 3-4
Burner Installation
To install an alternate Riello model 40-F20 Diesel/Light Oil Burner:
1Insert burner into the mounting bracket (16-2).
2Install 2 bolts (16-1) at top of burner tube bracket.
3Connect the oil supply hose (14-1) and oil return hose (14-2) by coupling them to the
quick connections on the side of the burner.
4Make the electrical connection to the burner by plugging-in the quick-connect (12-1). The
Cam-lever locks should be engaged to prevent separation of the plug connection.
To install an alternate Riello model 40-G750 Propane Gas Burner or Natural Gas Burner:
1Insert burner into the mounting bracket (16-2).
2Install 2 bolts (16-1) at top of burner tube bracket.
3Connect gas union (13-3). Use 2 wrenches to tighten.
4Open the manual gas train valve (13-2).
5Remove locking nut (16-3) and swing burner chassis (16-4) away to expose the combustion
head adjustment mechanism (fig. 17). Loosen Allen screw (17-1) and move the head
assembly (17-2) until the rear edge of the air tube (17-3) coincides with the desired number
setting (17-4).
•Setting for model “2100-DG-0600” (natural gas or propane) should be 3.0
•Setting for model “2100-DG-0900” (natural gas or propane) should be 4.0
6Lock off the setting, swing the burner closed and
replace the locking nut (16-3).
7Connect combustion air duct (13-1) and tighten
the gear clamp-band.
8Make the electrical connection to the burner by
plugging-in the quick-disconnect (12-1). The
Cam-lever locks should be engaged to prevent
separation of the plug connection.
Burner Removal
To remove an existing Diesel/Light Oil Burner, use the following sequence:
1Make certain that the power supply (11-1) to the water heater is disconnected.
2Disconnect the electrical connection to the burner by unplugging the quick-disconnect multi-
pin connector (12-1). This connection is on the interior of the water heater cabinet, at the base
of the main control panel. A pair of Cam-lever locks will need to be disengaged to permit
separation of the plug connection.
3Disconnect the combustion air duct (13-1) by loosening the gear clamp-band.
4Disconnect the oil supply hose (14-1) and oil return hose (14-2) by uncoupling the quick
connections on the side of the burner. The loose supply and return hose ends may be
coupled together and pushed aside out of the way inside the cabinet.
5Remove 2 bolts (16-1) from top of burner tube bracket.
6Pull burner toward you and away from the mounting bracket (16-2).
7Remove the gas union plug (15-1) to accommodate the propane/natural gas burner union.
To remove an existing Propane Gas Burner or Natural Gas Burner, use the following sequence:
1Make certain that power supply (11-1) and gas supply (11-2) are shut off and disconnected
from the water heater.
2Disconnect the electrical connection to the burner by unplugging the quick-disconnect multi-
pin connector (12-1). This connection is on the interior of the water heater cabinet, at the
base of the main control panel. A pair of Cam-lever locks will need to be disengaged to
permit separation of the plug connection.
3Disconnect the combustion air duct (13-1) by loosening the gear clamp-band.
4Close off the manual gas train valve (13-2).
5Use 2 wrenches to loosen and disconnect the gas union (13-3).
6Remove 2 bolts (16-1) from top of burner tube bracket.
7Pull burner toward you and away from the mounting bracket (16-2).
8Replace the gas union plug (15-1) to prevent a blockage or debris.
11 - power and gas supply
12 - multi-pin connector
14 - oil supply & oil return hose
16 - burner bracket, mounting
bolts & locking nut
13 - air duct, manual gas
valve and gas union
17 - burner combustion head
adjustment
11-1
11-2
12-1
13-2
13-1
13-3
16-2 16-1
16-3
17-3
17-4
17-1 17-2
16-4
14-1
14-2
15 - oil supply & oil return hose
15-1

Operation 4-1
Operation
Purging air from the
“HTF” circulation
system
•Verify that the primary circulation lines (1-1) are
connected to the “supply” and “return” isolation valves
(1-2) on the “water heater module”.
•Verify that the primary circulation lines are connected to a
distribution manifold.
•Complete the connection for one “heat exchanger loop” or
“portable heat exchanger” This will close the circulation
loop and allow circulation.
•Verify that the “supply” and “return” isolation valves
(1-2) and the isolation valves (1-3) at both ends of the
primary circulation lines are in the “open” position.
•The automatic air vent (2-1) valve cap (2-2) should not
need adjustment. The valve cap should be opened 1 1/2
turns (counter clockwise) from fully closed to allow air
escape from “HTF” system.
•Toggle the pump switch (3-1) to the “On” (up) position
and run the pump. This will release the air from the
system.
•Monitor the “heat transfer fluid level gauge” (4-1) and
make sure that the heat transfer fluid level stays between
1/4 to 3/4 full at all times during this process.
•Note that there may be a certain amount of air in the
system. “HTF” levels may change as air is displaced from
the system. Add “HTF” fluid to maintain 1/4 to 3/4 levels.
1 - “supply” & “return” isolation valve
in the “open” position
1-1
1-3
1-2
2 - automatic air vent
3-1
3 - pump and water heater switch
4 - heat transfer fluid level gauge
4-1
2-1
2-2

Operation 4-2
•When the air is eliminated, the “System Pressure”
gauge (5-1) will hold at a steady reading of between
15 to 40 P.S.I.
Before firing the
system
• Verify that the power supply is correct and that the
electrical hook up is as specified in “Setup”.
•Verify that the water heater is being supplied with the
same fuel/gas type as indicated on the water heater
data plate and the vinyl burner type labels - See
“Burner Setup - Burner Identification” in the Setup
section of the Operators Manual.
•Verify that the “supply” and “return” isolation
valves (6-1) are closed.
•Verify that the heat transfer fluid level gauge (4-1)
shows approximately 1/4 to 1/2 full.
Diesel/Light Oil
•Verify that the fuel line valves (7-1) are in the
positions as shown, to the right.
Propane/Natural Gas
•Verify that the manual gas train valve is in the “open”
position.
5 - system pressure gauge
5-1
6 - “supply” & “return” isolation valve
in the “closed” position
6-1
7-1
7 - fuel line valves and filter

Operation 4-3
Startup for Diesel/Light Oil Burner:
NOTE: The following steps must be performed by “Qualified Personnel” only.
Contact your local fuel supplier to inform them of requirements. Only clean, #1 or #2
diesel fuel or light heating oil is suitable for use in this system.
1. Remove burner hood (8-1).
2. To remove the drawer assembly (figure 10):
•Loosen screw (10-1), then unplug control box (10-2), by carefully pulling it back and
then up.
•Remove the air tube cover plate (10-3) by loosening the two retaining screws (10-4).
•Loosen screw (9-1) and the fuel supply line connection (9-2) then slide the complete
drawer assembly out of the combustion head as shown.
3. Remove the nozzle adapter (11-2) from the drawer assembly by loosening the screw (11-1).
4. Check the nozzle to ensure correct size and type. If wrong replace the nozzle with one of the
correct size and type listed below. Nozzles should be replaced after 5,000 hours of service,
due to gradual erosion of the orifice from high pressure flow.
•Model “2100-DG- 0600” nozzle = 3.50 x 60º.
•Model “2100-DG- 0900” nozzle = 5.00 x 60º.
5. Replace the nozzle adapter into the drawer assembly and re-secure the retaining screw.
6. Check position of ignition electrodes. Refer to figure 12 for correct alignment. Adjust if
necessary.
7. To set the turbulator adjustment assembly (figure 13).
•Loosen nut (13-1) and turn screw (13-2) until index marker (13-3) is aligned with the
correct index number. Retighten the retaining nut.
•Correct turbulator settings are:
•Model “2100-DG- 0600” = 2.5.
•Model “2100-DG- 0900” = 4.0.
8. Insert the drawer assembly back into the burner tube. Replace the control box and cover
plate by reversing procedure described in “2” above.
9. Connect power supply to the water heater and establish flow of heat-transfer-fluid by
turning on the circulating pump’s toggle switch (14-1), located on the control panel. Open
Supply and Return isolation valves (6-1)
10. Initiate a try for ignition by turning on the operator toggle switch
(14-2) located on the control panel. The burner will go through a pre-
purge cycle before trying for ignition. Due to air in the fuel line, you
may have to re-initiate the ignition cycle multiple times, by pressing
and holding the burner reset button (8-2) for at least 10 seconds.
Once all air is eliminated, the burner should light. The burner will run
on low for about ten seconds before shifting to high fire.
Note: If the diesel/light oil burner fails to ignite after
several attempts, there may be air in the fuel
system. To purge the air from the fuel system
- see “Operation - Purge air from diesel/light
oil fuel system” section of the operators
manual.
9 - combustion head
14 - circulating toggle switch
8 - burner hood & reset button
8-2
8-1
13-1
13-2
13-3
14-1
14-2
13 - tubulator adjustment (fig. D5997-
Riello Manual)
12 - ignition electrodes (fig. D6003-Riello Manual)
10 - drawer assembly on burner
10-1
10-4
10-2
10-3
9-1
9-2
11 - nozzle adapter (fig. D7437-
Riello Manual)
11-1
11-2

Operation 4-4
11. To set the burner’s air shutter (figure 17) and fuel pressure, refer to figure 17.
•While the burner is firing on LOW, loosen retaining nut (17-2) and turn the adjusting screw (17-
3) until the top of the air shutter (17-10) is correctly positioned. Hold adjusting screw in
position and secure by tightening the retaining nut. Preliminary settings for low fire are:
•Model “2100-DG-0600” = 3.0
•Model “2100-DG-0900” = 5.5
Fuel pressure for low fire is factory set to 100 PSI for all models.
•While the burner is firing on HIGH, set fuel pressure by turning the pressure regulator adjust-
ment screw (17-9). Fuel pressure gauge (15-1) is provided to monitor this adjustment. Fuel
pressure settings for high fire are:
•Model “2100-DG-0600” = 160 psi
•Model “2100-DG-0900” = 145 psi
•While the burner is firing on HIGH, loosen retaining nut (17-7) and turn the bolt (17-8) in a
counterclockwise direction until about ¾” of thread is visible. Position the air shutter (17-10)
so the top of the air shutter is aligned with the proper index line. Hold the shutter in this
position and turn the adjusting bolt clockwise until a resistance is met. Preliminary air shutter
settings for high fire are:
•Model “2100-DG-0600” = 4.0
•Model “2100-DG-0900” = 7.5
•NOTE: This step is essential for clean,
efficient combustion.
Using a good quality Smoke Spot Tester
and Flue Gas Analyzer, take flue gas
sample readings at the test port in the flue
pipe above the cabinet. Fine tune the
readings by adjusting the burner’s air
shutter (17-10), to achieve acceptable
efficiency and emission levels. Final
readings must be taken with the burner
cover in place and the combustion air duct
(16-1) connected. Acceptable levels are.
•Maximum CO2 = 13%.
•Smoke Spot Reading = 0
•Maximum Flue Gas Temp. = 600F.
•Maximum CO Level = 50 PPM
•Minimum Efficiency = 80%.
17 - air shutter (fig. S7440 & S7441-Riello Manual)
16 - combustion air duct & burner
16-1
15-1
17-1
17-2
17-3
17-8
17-7 17-9
17-6
17-5
17-10
15 - manifold gas pressure gauge