User Manual
Contents
1. For the most efficient operation keep storm windows and doors closed all year long They not only help to insulate against heat and cold but they also keep out dirt pollen and noise Closing drapes at night and keeping fire place dampers closed when necessary will help you to retain the air you have already paid to heat Johnson Controls Unitary Products 820900 UUM B 0913 COOLING CONSERVATION To comfortably cool your home your heat pump must remove both heat and humidity Don t turn your system off even though you will be away all day On a hot day your system may have to operate between 8 and 12 hours to reduce the temperature in your home to a nor mal comfort level Keep windows closed after sundown While the out door temperature at night may be lower than indoors the air is generally loaded with moisture which is soaked up by furniture carpets and fabrics This mois ture must be removed when you restart your system The hotter the outside temperature the greater the load on your system Therefore do not be alarmed when your system continues to run after the sun has set on a hot day Heat is stored in your outside walls during the day and will continue to flow into your home for several hours after sunset Use your kitchen exhaust fan when cooking One sur face burner on High requires one ton of cooling Turn on your bathroom exhaust fan while showering to remove humidity You can also help your s2. in the following table QUANTITY THROWAWAY PER FILTER UNIT SIZES Nom Tons Inches 3 6 TON 14x 20 2 14x 25 1 To install the filters remove the filter access panel located to the left of the condensate drain connection as shown in Fig ure 1 NOTE Filters must be installed with Air Flow arrows point ing inward toward the indoor coil In the event the spacers in the filter section are removed they must be reinstalled in their original position Slide filters all the way into the filter racks provided When more than one filter in a filter rack is required they must butt each other when sliding into position Replace the filter access panel 2 14 X 20 FILTERS 1 14 X 25 FILTERS FIGURE 1 END VIEW LESS FILTER ACCESS PANEL 3 THRU 6 TON Johnson Controls Unitary Products 820900 UUM B 0913 3 THRU 12 5 TON All units contain four filters The filter racks on these units will receive either 1 or 2 filters Filters can also be installed in the building at a suitable return air location if an economizer or outside air accessory is not used Filters must always be used They should be inspected once a month and thor oughly cleaned or replaced if it appears they are beginning to accumulate excessive dirt To install the filters remove the filter access panel as shown in Figure 2 FILTERS NOTE Filters must be installed with Air Flow arrows point ing inward toward the ind
3. OOR UNIT Check thermostat for proper setting Check circuit breaker and fuses Switch thermostat to Emergency Heat position ice snow or wind storms HONS Call qualified service man Check thermostat for proper setting NO COOLING Check circuit breaker and fuses Check filters Call qualified service man Procedure Heating Season ELECTRICAL 1 Switch thermostat to Emergency Heat POWER 2 Leave Emergency Heat on for at least 12 hours after electrical power is re established INTERRUPTION gency P 3 Switch thermostat back to Heating or Auto Procedure Cooling Season 1 Switch thermostat to Off position 2 Do not switch to Cooling or Auto until electrical power has been re established for 4 hours There will be no heat available until power is re established OWNER please have your installer fill in the following information immediately after unit has been installed and is properly operating Installed by Installer s Address _ Installation Date _ Owner s Name Equipment installed at address __ Model Number Distributor from whom the equipment was purchased__ The owner should keep this information in a place where it can be found if needed for warranty purposes Johnson Controls Unitary Products NOTES AST CERTIFIED AnD CERTIFIED www ahridirectory org www ahridirectory org Unitary Small HP Unitary Large HP AHRI Standard 210 240 o Subject to ch
4. USER S MAINTENANCE and SERVICE INFORMATION MANUAL 3 THRU 20 TON SINGLE PACKAGE HEAT PUMP UNITS The manufacturer recommends that the User read all sections of this manual and keep the manual for future reference 820900 UUM B 0913 820900 UUM B 0913 Congratulations on your purchase of our heat pump This energy effi cient unit has been precision designed manufactured of high quality materials and has passed many rigorous inspections and tests to ensure years of satisfactory performance Please read this booklet thoroughly It will help you understand your heat pump and will tell you how to operate it efficiently and how to obtain the great est measure of comfort at the lowest operating expense We appreciate your interest in our products and your decision to purchase our heat pump Enjoy your comfort This heat pump has been specially developed and built to meet dual needs of heating and cooling That s why you can rely on efficient trouble free operation Your system is fully automatic Set the thermostat and forget it And it s automatically protected against dam age by voltage fluctuations or excessive heating or cooling demands GENERAL INFORMATION HOW YOUR HEAT PUMP WORKS If your hand is wet and you blow on it it feels cool because some of the moisture is evaporating and becoming a vapor This process requires heat The heat is being taken from your hand as your hand feels cool That s w
5. ange without notice Printed in U S A 820900 UUM B 0913 Copyright 2013 by Unitary Products Group All rights reserved Supersedes 820900 UUM A 1011 York International Corporation 5005 York Drive Norman OK 73069
6. hat happens with a heat pump During the cooling cycle your system will remove heat and humid ity from your structure and will transfer this heat to the outdoor air During the heating cycle your system will remove heat and humidity from the outdoor air and will transfer this heat to your structure Remember that your heat pump doesn t generate much heat it merely transfers it from one place to another This is possible because even O F outdoor air con tains a great deal of heat SYSTEM OPERATION Your thermostat puts full control of the comfort level in your structure at your fingertips Set your thermostat for heating or cooling Find the temperature that is most comfortable for you and then leave your thermostat alone Manually moving the ther mostat up or down to extreme settings will not speed up temperature changes Avoid moving the thermostat up during heating particularly where a demand type electric meter is installed This will increase your oper ating cost substantially A CAUTION The Main power to the system must be kept On at all times to prevent damage to the outdoor unit compres sor If necessary the thermostat control switch should be used to turn the system Off Should the main power be disconnected or interrupted for 8 hours or longer DO NOT attempt to start the system for 8 hours after the power has been restored to the outdoor unit If heat is needed during this 8 hour peri
7. liding into position Replace the filter access panel Johnson Controls Unitary Products 820900 UUM B 0913 4 16 X 20 FILTERS 4 16 X25 FILTERS 6 12 X 24 FILTERS INDOOR COIL 6 12 X 24 FILTERS CONDENSATE DRAIN CONNECTION FIGURE 3 END VIEW LESS FILTER ACCESS PANEL 15 AND 20 TON REGISTERS Supply and return air registers must be open when the unit is in operation Furniture must not block airflow in or out of the registers CONDENSER COIL An annual check and cleaning of the outdoor coil should be done Clean any debris and dirt from the out side coil face with a brush being careful not to damage the fins If extremely dirty a hose can be used to wash the coil from the inside out while brushing a soapy solu tion on the outside BLOWER ASSEMBLY Even with good filters properly in place blower wheels and motors will become dust laden after long months of operation The entire blower assembly should be inspected annually If the motor and wheel are heavily coated with dust they can be brushed and cleaned with a vacuum cleaner CHARACTERISTICS OF HEAT PUMPS A CONSTANT HEAT Heat pumps have a noticeably cooler supply air tem perature than furnaces The common practice of over sizing furnaces contributes to an off and on again operation with short blasts of hot supply air The heat pump system is sized more closely to the heating needs of your home Heat is supplied at a l
8. od use emergency heat HEATING CYCLE With the thermostat in the heating position and out door temperature in the range of 20 30 or below the outdoor unit will generally run 100 of time When the outdoor air is cool and moist frost may form on the surface of your outdoor coil When this frost builds to a certain point your system will switch to a defrost cycle Although you may feel cooler air coming from your registers DO NOT adjust your thermostat This frost will melt quickly and your system will return to normal operation automatically COOLING CYCLE Switch your thermostat to cool Select a comfortable thermostat temperature setting typically between 75 and 80 degrees Comfort sensations vary with individu als The lower the indoor temperature desired the greater the number of hours your unit must operate Set your thermostat 2 or 3 F below normal several hours before entertaining large groups during hot weather People give off considerable heat and mois ture On an extremely hot day the indoor temperature may rise 3 to 6 F above the thermostat setting Properly selected equipment does not have the capacity to maintain a constant indoor temperature during this peak load Over sizing your system to handle this peak load isn t practical because the over sized system would operate much less efficiently at all other condi tions AIDS TO MAXIMUM OPERATING EFFI CIENCY HEATING CONSERVATION
9. oor coil In the event the spacers in the filter section are removed they must be reinstalled in their original position Slide filters all the way into the filter racks provided When more than one filter in a filter rack is required they must butt each other when sliding into position Replace the filter access panel INDOOR COIL FILTER ACCESS PULLS FIGURE 2 FILTER ACCESS 3 THRU 12 5 TON 15 AND 20 TON All units contain 2 filters Filters can be installed in the build ing at a suitable return air location if an economizer or outside air accessory is not used Filters must always be used They should be inspected once a month and thoroughly cleaned or replaced if it appears they are beginning to accumulate excessive dirt Filter sizes and quantities are shown in the fol lowing table THROWAWAY QUANTITY PER UNIT Nom Tons FILTER SIZES Inches 12x 24 15 TON 20 TON 16x 20 16 x 25 To install the filters remove the filter access panel located to the left of the condensate drain connection as shown in Fig ure 3 NOTE Filters must be installed with Air Flow arrows point ing inward toward the indoor coil In the event the spacers in the filter section are removed they must be reinstalled in their original position Slide filters all the way into the filter racks provided When more than one filter in a filter rack is required they must butt each other when s
10. ower tem perature over a longer period of time to provide a more constant heat and it may give you the impression that your system never stops running WATER RUN OFF During the heating cycle you may notice water running off the outdoor coil Moisture from the air is condensed on the outside surface of the coil where it gathers and runs off No need for alarm your unit has not sprung a leak OUTDOOR COIL DEFROSTING At certain outdoor conditions low temperature high humidity frost may build up on the coil of the outdoor unit In order to maintain heating efficiency the system will automatically defrost itself Water vapor rising from the outdoor unit is normal and is an indication of proper operation The vapor cloud will only last for a few minutes When the defrost cycle is completed the system will automatically switch back to heating Electric heat is automatically energized to maintain comfort during defrost BEFORE CALLING A SERVICE PERSON e Check thermostat setting and insure thermostat is calling for heat or cooling Check thermostat for lint etc e Check fuses or circuit breakers e Check filters for excessive dust accumulation Johnson Controls Unitary Products 820900 UUM B 0913 TABLE 1 TROUBLE SHOOTING GUIDE PROBLEM CORRECTION NO HEAT Check thermostat for proper setting Check circuit breaker and fuses Check filters Call qualified service man NOT ENOUGH HEAT OUTD
11. ystem in the summer by closing drapes or blinds and lowering awnings on windows that get direct sunlight MAINTENANCE A CAUTION Prior to any of the following maintenance pro cedures shut off all power to the unit In order to insure long and trouble free service from your system we recommend periodic inspection cleaning lubrication and adjustment by your installing Dealer Contractor Be sure to ask about this service For those buildings with in house maintenance please follow the instructions listed below to care for your sys tem LUBRICATION Both the indoor blower motor and outdoor fan motor are permanently lubricated and require no mainte nance FILTER CARE Filters must always be used and must be kept clean When filters become dirt laden insufficient air will be delivered by the blower decreasing your units effi ciency and increasing operating costs and wear and tear on the unit and controls AIR FILTERS 3 THRU 6 TON Units 3 6 Ton are shipped with 1 throwaway type air filters The filter racks on 3 6 ton units will receive 1 or 2 filters Fil ters can also be installed in the building at a suitable return air location if an economizer or outside air accessory is not used Filters must always be used They should be inspected once a month and thoroughly cleaned or replaced if it appears they are beginning to accumulate excessive dirt Fil ter sizes and quantities are shown
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