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WaterFurnace OM1500MW, Owner'S Manual

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Energy Saving Tips 

Now that you’ve invested in the most energy efficient heating and cooling system available, here are some additional 
tips to help you save money on your energy costs throughout your entire home.

Fluorescent Lights

Fluorescent lights use a fraction of the amount of energy as incandescent bulbs. Consider replacing your highest usage 
incandescent bulbs with fluorescent ones. 

Consider ENERGY STAR

®

 Appliances

In addition to your highly efficient geothermal system, you may want to consider other household appliances that meet 
the ENERGY STAR

®

 standards. ENERGY STAR

®

 options are available for refrigerators, clothes washers, ceiling fans, 

dishwashers, home audio systems, TVs, computer equipment, etc. A listing of ENERGY STAR

®

 appliances can be found 

at www.energystar.gov. 

Duct Sealing and Insulation

A recent study revealed that a large percentage of homes had at least one section of duct disconnected somewhere in 
the system (without the homeowner knowing about it). Regardless of the heating & cooling system type installed, having 
properly connected and sealed ductwork is critical to proper performance. Despite its name, duct tape is generally 
insufficient to seal leaks in a duct system. Over time, the adhesive used on duct tape will dry out resulting in tape failure. 
Other tape types and sealants used by professional HVAC contractors are better suited for sealing duct systems. It is 
also recommended that the ductwork be insulated (either internally or externally) when it is located in an unheated or 
uncooled area (attic, crawl space, etc.) 

Insulation, Weather Stripping and Sealing

Ensure that your home has the suggested levels of insulation. The amount of insulation required depends on the type of 
insulation and your climate. Adequate weather stripping and sealing around windows, doors, and electrical outlets can have a 
dramatic effect on air moving from outside to inside (infiltration) and on air moving from inside to outside (exfiltration). 

Replacement Windows

If you have old leaky windows, consider replacing them with high efficiency models. Today’s premium windows are 
very energy efficient, and some contain coatings or gasses that reduce harmful ultraviolet rays and reduce your cooling 
requirements. Consider ENERGY STAR

®

 models.

ENERGY SAVING TIPS

Summary of Contents for OM1500MW

Page 1: ...Owner s Manual Residential Products ...

Page 2: ...You now own some of the world s most advanced and valued technologies ...

Page 3: ......

Page 4: ...__________________________________________________________________________ Major Options Installed check all that apply o Auxiliary Heat Internal_____________________ External_ ___________________ kW_ __________________________ o Hot Water Assist o Electronic Air Cleaner brand _ _______________________________________________________________________ o Electrostatic Air Filter brand _______________...

Page 5: ...11 Typical Installation Components 12 13 Closed Loop Systems 14 Open Loop Systems 15 Your Loop Location 16 Safety Warnings 17 Warranty Explanation 18 THERMOSTATS 19 HOMEOWNER MAINTENANCE 20 TROUBLESHOOTING 21 FAQs GENERAL INFORMATION OPERATING TIPS 22 29 ENERGY SAVING TIPS 30 GLOSSARY 31 PREVENTIVE MAINTENANCE SERVICE RECORD 32 ...

Page 6: ...rce heat pump Reliable The WaterFurnace reputation for reliability has been earned by using only the highest quality components design and workmanship Your geothermal unit will provide many years of steadfast operation Quiet Unlike ordinary air conditioners or heat pumps there are no noisy outdoor units Our units are designed and constructed for extremely quiet operation Safe Clean WaterFurnace un...

Page 7: ...e system in a typical home is equal in greenhouse gas reduction to planting an acre of trees or taking two cars off the road Current GeoExchange installations equal 14 million barrels of crude oil saved per year The ground absorbs 47 of the sun s energy that reaches the earth This amount of energy represents 500 times more than mankind needs every year 5 units of heating or cooling delivered into ...

Page 8: ...r horizontally or vertically or it can be placed in a pond Water or water and anti freeze is circulated through the pipe transporting heat to the heat pump during the heating mode and away from the heat pump during the cooling mode The heat transfer takes place inside the heat pump in a water to refrigerant heat exchanger HEAT PUMP OPERATION Geothermal heat pump systems consist of four circuits 1 ...

Page 9: ... transfer causes the cold liquid refrigerant to turn into a gas Unlike water refrigerant changes from a liquid into a gas at a very low temperature The now gaseous refrigerant flows into the compressor where it is compressed After compression the refrigerant will be very hot approximately 165 F and discharged through the reversing valve and into the air coil The air coil is a radiator like device ...

Page 10: ... gas The compressor draws the refrigerant gas compresses it and discharges it through the reversing valve During cooling the reversing valve is energized which changes the openings from one port to another causing the refrigerant flow to go in the opposite direction as in heating mode However the flow to the compressor does not change direction After compression the hot refrigerant passes through ...

Page 11: ...e rise through the unit is as much as 2 10 F The amount of hot water generated is a function of the model and run time of the unit On very hot days and cold days the hot water generator could produce more hot water than is required for the home due to the long run times of the unit On milder days when the unit has short duty cycles the electric elements in the water heater will maintain the desire...

Page 12: ...Major components in a closed loop earth coupled system include Geothermal unit placed on mounting pad Thermostat Earth loop piping Earth loop circulators pumps Electrical supply Duct system except for radiant floor heating systems Hot water piping if hot water generator used Auxiliary heater if used Flexible Duct Collar Vibration Absorbing Pad Drain Hot Water Assist Connections Auxiliary Heater Kn...

Page 13: ...s Hot water piping if hot water generator used Auxiliary heater if used Electrical Flexible Duct Collar Vibration Absorbing Pad P T Plugs Condensate Drain Hot Water Assist Connections Auxiliary Heater Knockout Low Voltage to Thermostat and Valve Unit Supply Aux Heat Supply Water Out Water In Shut Off Valves Boiler Drains For Flushing Disconnects IfApplicable Rubber Bladder Expansion Tank Solenoid ...

Page 14: ...e and to seal the hole The vertical pipes are then connected to a header system horizontally a few feet below the surface If you have this loop type record information here Number of bore holes ____________ Depth of each bore hole ____________ Pipe size ____________ Pond Loops Pond loops are a cost effective way to install a geothermal system because trenching is limited to only the supply and ret...

Page 15: ...ut a routine of preventive maintenance this material may eventually begin to clog the heat exchanger in the unit When this happens the efficiency and capacity of the unit is decreased eventually to the point where failure may occur To minimize the potential of this happening a heat exchanger cleaning schedule should be established with your dealer The frequency will depend on the specific quality ...

Page 16: ...cation of the piping system You may also want to include the location of any underground utilities SCALE 1 SQUARE ______ FT W _____ D1 _____ D2 _____ BACKFILL _______ W _____ D1 _____ D2 _____ W _____ D _____ D1 D2 W D W W _____ D1 _____ D2 _____ W _____ D _____ D1 D2 W D W W _____ D _____ W _____ D1 _ ____ D2 _____ W _____ D1 _ ____ D2 _____ Backfill __________ OR BACKHOE D1 W _____ D1 _____ D2 _...

Page 17: ...cautions 1 Adhere to these safety precautions when performing the following 2 Replacing a disposable filter Turn off the unit and fan at the thermostat 3 Cleaning an electrostatic filter Turn off the unit and fan at the thermostat 4 Cleaning an electronic air cleaner Turn off all power supplies to the unit and the air cleaner Wait 5 minutes to allow static to discharge 5 Checking cleaning the inte...

Page 18: ...f a part the company provides a replacement part to the servicing contractor at no charge Accessories are generally external to the unit and include items like thermostats pumps humidifiers etc In most cases accessories supplied by WaterFurnace carry a 5 year warranty Some warranties do not cover accessories Contact your dealer to determine the specific terms and extent of your coverage Will I hav...

Page 19: ...e automatic changeover mode This separation is called the dead band and is usually 2 degrees F For example if you place your cooling setpoint at 72 your heating setpoint cannot be higher than 70 If you would then increase your heating setpoint from 70 to 72 your cooling setpoint would automatically increase by that same 2 degrees to 74 Your electronic thermostat is designed to provide precise comf...

Page 20: ...filter change it regularly before it accumulates too much dirt Never attempt to clean it Simply throw it away and install a new one Do not turn a dirty filter over to the clean side and reinstall it this results in blowing the accumulated dirt right back into the home Disposable filters can be purchased at most hardware stores or through your local WaterFurnace dealer Electrostatic Filters Clean e...

Page 21: ...ged Turn off unit at breaker Call for service Thermostat settings mysteriously change Check setpoints for both heating and cooling Red LED on at thermostat Check status fault lights on unit See thermostat instructions Red LED on or flashing at unit Determine fault condition by noting which light is on Drain light is flashing Check condensate pan and drain Troubleshooting In the event that your uni...

Page 22: ...hermostats do not require a battery in order to maintain your selected set points in the event of a power loss The thermostat memory is unaffected by power failures of any duration When power is restored the thermostat will continue operating as if the power had never been interrupted However there will be no heating or cooling during the outage What if my unit stops working Your unit has been equ...

Page 23: ...e unit lockout indicator light goes out turn the system back on to the desired MODE 4 Unit operation should resume within five minutes if heating or cooling is required 5 The appropriate status light on the unit will continue indicating the fault until power is interrupted to the unit This serves as a diagnostic aid for your dealer 6 If the unit shuts down again call your WaterFurnace dealer as so...

Page 24: ... filter maintenance If you have opted for a permanent electrostatic filter wash it with a garden hose and a mild household cleaner at least every 60 days When placing the filter back in the slot be sure that the filter is dry and that the arrow on the filter frame points toward the unit If you have an electronic air cleaner installed check with your dealer or refer to the air cleaner s owner s man...

Page 25: ...placed Does my unit heat water Some units are equipped with a hot water assist component Depending on conditions this component can preheat water by raising the temperature by as much as 2 10 F and then deliver it to your water heater using a small pump The hot water assist is not designed to heat water like your water heater However a unit equipped with a hot water assist heats water much more ef...

Page 26: ...cking with your WaterFurnace dealer If the well pumping system requires service or is inoperable your unit should be turned off or placed into emergency heat until an adequate water supply is restored Depending on the water quality some maintenance is usually required with a well water system Without scheduled checkups minerals and other particles in the water may eventually begin to clog the heat...

Page 27: ...chieve more miles per gallon better efficiency on the highway with fewer stops and starts The same principle holds true with your geothermal system How is the unit sized for my home Your system has been designed to meet the heating and cooling requirements of your home based on your local weather Each home is different so calculations are performed to ensure that the unit size is the optimum selec...

Page 28: ... more ductwork and may also result in the need to add more loop in the ground What about adjusting the thermostat when entertaining many people The temperature in your home can be affected significantly by the number of people inside Our bodies generate heat through metabolism in fact your body gives off about 300 400 BTUs per hour This number can double or even triple at high activity levels danc...

Page 29: ...door air quality can be improved using special ultra violet UVC lights placed in the air distribution system Although these lights do not remove any contaminants you ll still need a filter they will kill or render sterile airborne or surface microorganisms including bacteria germs mold spores and pollens In addition to the health benefits of this technology equipment efficiency can be improved by ...

Page 30: ...ed having properly connected and sealed ductwork is critical to proper performance Despite its name duct tape is generally insufficient to seal leaks in a duct system Over time the adhesive used on duct tape will dry out resulting in tape failure Other tape types and sealants used by professional HVAC contractors are better suited for sealing duct systems It is also recommended that the ductwork b...

Page 31: ...ms air water or refrigerant of different temperatures Heat Loss The amount of energy BTUs hr lost from the home during cold weather that needs to be overcome supplied by the heating system The amount varies based on outdoor air temperatures Heat Gain The amount of heat BTUs hr that is absorbed by the home during hot weather requiring removal by the air conditioner in order to cool the home Varies ...

Page 32: ...ANCE SERVICE RECORD Preventive Maintenance Service Record In order to keep your system operating at peak performance levels WaterFurnace recommends that you take advantage of your dealer s planned maintenance program This will normally include semi annual preventive maintenance checks ...

Page 33: ...ner s Club We re creating a very special club for WaterFurnace owners You ll receive access to exclusive benefits and WaterFurnace giveaways To be among the very first members visit mywaterfurnace com and sign up ...

Page 34: ...appen to have questions or issues with your WaterFurnace product please start with the contractor who installed your system If you need further assistance call 800 934 5667 to speak with our Consumer Relations department ...

Page 35: ...Additional Notes ...

Page 36: ...Additional Notes ...

Page 37: ...Additional Notes ...

Page 38: ...aterFurnace has a policy of continual product research and development and reserves the right to change design and specifications without notice 2014 WaterFurnace International Inc OM1500MW 12 14 Printed with 10 post consumer waste recycled paper C US visit us at waterfurnace com ...

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