Installation Instructions

Transcription

1 Part Number: CPECOMZR007A00 SMALL PACKAGED PRODUCT (3 TON UNITS) VERTICAL ECONOMIZER ACCESSORY EXCLUDING 3 TON 14 SEER HP AND DUAL FUEL MODELS Installatin Instructins Read these instructins cmpletely befre attempting t install the Vertical Accessry. CONTENTS SAFETY CONSIDERATIONS... 1 GENERAL... 1,2 ACCESSORIES LIST... 2 INSTALLATION CONFIGURATION ECONOMIZER CONTROL MODES... 6 OPERATION SEQUENCE OF OPERATION PERFORMANCE DATA TROUBLESHOOTING WIRING DIAGRAMS SAFETY CONSIDERATIONS Installatin and servicing f air-cnditining equipment can be hazardus due t system pressure and electrical cmpnents. Only trained and qualified service persnnel shuld install, repair, r service air-cnditining equipment. Untrained persnnel can perfrm the basic maintenance functins f replacing filters. All ther peratins shuld be perfrmed by trained service persnnel. When wrking n air-cnditining equipment, bserve precautins in the literature, tags, and labels attached t the unit, and ther safety precautins that may apply. Recgnize safety infrmatin. This is the safety-alert symbl. When yu see this symbl n the unit and in instructins r manuals, be alert t the ptential fr persnal injury. Understand these signal wrds; DANGER, WARNING, and CAUTION. These wrds are used with the safety-alert symbl. DANGER identifies the mst serius hazards which will result in severe persnal injury r death. WARNING signifies hazards which culd result in persnal injury r death. CAUTION is used t identify unsafe practices which may result in minr persnal injury r prduct and prperty damage. NOTE is used t highlight suggestins which will result in enhanced installatin, reliability, r peratin. Fllw all safety cdes. Wear safety glasses and wrk glves. Have a fire extinguisher available.! WARNING ELECTRICAL SHOCK HAZARD Electrical shck can cause injury r death. Discnnect pwer supply and install lckut tag befre attempting t install accessry.!! CAUTION UNIT PERFORMANCE AND COMPONENT HAZARD Failure t fllw this cautin may result in unit damage. Fr cling peratin, the recmmended airflw is 350 t 450 cfm fr each 12,000 Btuh f rated cling capacity. Fr heating peratin, the airflw must prduce a temperature rise that falls within the range stamped n the unit rating plate. GENERAL s are recmmended fr use with nly cmmercial packaged prducts that have X13 high static mtrs. The system utilizes the latest technlgy available fr integrating the use f free cling with mechanical cling fr rftp units. The slid state cntrl system ptimizes energy cnsumptin, zne cmfrt, and equipment cycling by perating the cmpressrs when the utdr-air temperature is t warm, integrating the cmpressr with utdr air when free cling is available, and lcking ut the cmpressr when utdr-air temperature is t cld. Demand ventilatin is supprted. The system utilizes gear-drive technlgy with a direct-munt spring return actuatr that will clse upn lss f pwer. The system cmes standard with an utdr air temperature sensr, a supply air temperature sensr, and lw temperature cmpressr lckut switch. Return-air temperature, indr enthalpy, and utdr enthalpy sensrs are available fr field installatin. Field-installed CO 2 sensrs are available. Barmetric relief dampers prvide natural building pressurizatin cntrl. Barmetric relief dampers are built int the design and are standard. See Table 1 fr package cntents. See Table 2 fr sensr usage. Table 1 Package Cntents PART NUMBER QTY DESCRIPTIONS 1 Hd Tp and Sides 1 Hd Divider 1 Aluminum Filter 11 #10 Self Drilling Screws and Washers 4 #10 x 1/2" Blunt End Screws 1 #10 x 1" Self Drilling Screws 1 Assembly CPECOMZR007A00 Supply Air Temperature Sensr 1 with Bracket 2 1" 12 x 20 Filter* 1 Tp Filter Rack 1 Replacement Return Chamber Panel 1 Cmpressr Cver Panel 1 Extensin Harness w/ Plug 2 Wiring Diagram Labels *If using 2 field installed filters use (1) 10x20 and (1) 12x20. 1 Manufacturer reserves the right t discntinue, r change at any time, specificatins r designs withut ntice and withut incurring bligatins Printed in U.S.A.

2 APPLICATION Outdr Air Dry Bulb Differential Dry Bulb Single Enthalpy Differential Enthalpy CO2 fr DCV Cntrl Using a Wall-Munted CO2 Sensr CO2 fr DCV Cntrl Using a Duct-Munted CO2 Sensr Table 2 - Sensr Usage ECONOMIZER WITH OUTDOOR AIR DRY BULB SENSOR Accessries Required Nne. The utdr air dry bulb sensr is factry installed. CRTEMPSN002A00* 33ZCSENCO2 r CGCDXSEN004A00 33ZCSENCO2 r CGCDXSEN004A00 and 33ZCASPCO2 r CGCDXASP00100** ACCESSORIES LIST The ecnmizer has several field-installed accessries available t ptimize perfrmance. Refer t Table 3 fr authrized parts. Table 3 - Field-Installed Accessries DESCRIPTION PART NUMBER Return Air Temperature Sensr CRTEMPSN002A00 Outdr Air Enthalpy Sensr HH57AC078 Indr Air Enthalpy Sensr CRENTDIF004A00 Return Air CO2 Sensr (4-20mA) CRCBDIOX005A00 CO2 Rm Sensr (4-20mA) 33ZCSENXO2 r CGCDXSEN004A00 Aspiratr Bx fr Duct Munt 33ZCASPCO2 r CO2 Sensr (4-20mA) CGCDXASP001A00 Space Temperature and CO2 Rm Sensr with Override (4-20mA) 33ZCT56CO2 Space Temperature and CO2 Rm Sensr with Override and Set Pint (4-20mA) 33ZCT56CO2 Heat Pump Relay Package CPRLYKIT001A00 INSTALLATION - See Fig. 2 fr cmpnent lcatins. T install the vertical perfrm the fllwing prcedure: 1. Turn ff unit pwer supply and install lckut tag.! HH57AC078 HH57AC078 and CRENTDIF004A00* WARNING ELECTRICAL SHOCK HAZARD Failure t fllw this warning culd result in persnal injury r death. Befre installing r servicing system, always turn ff main pwer t system and tag. There may be mre than ne discnnect switch. Turn ff accessry heater pwer switch if applicable. OR CRCBDIOX005A00 *CRENTDIF004A00 and CRTEMPSN002A00 accessries are used n many different base units. As such, these kits may cntain parts that will nt be needed fr installatin. 33ZCSENCO2 and CGCDXSEN004A00 are accessry CO2 sensrs. **33ZCASPCO2 and CGCDXASP00100 are accessry aspiratr bxes required fr duct-munted applicatins. CRCBDIOX005A00 is an accessry that cntains bth 33ZCSENCO2 and 33ZVASPCO2 accessries. 2. Remve the side panel shipped n the HVAC unit. See Fig Make sure the panel cvering the bttm return air duct pening has been remved, allwing fr unbstructed vertical return. 4. Install the tp filter rack in the HVAC unit next t the indr cil. Bend flange by hand at 90 degrees - Fig.1. Screw left side f rack in t 4th hle dwn n cil frame. Use nly 1/2 (12.7mm) lng blunt end screws. Screw bent flange t unit side panel using 1 lng self-drilling screw prvided. If using 2 (50.8mm) filter the filter spacer must be remved. NOTE: The bttm filter rack is built int the ecnmizer. The filters are accessible thrugh the hrizntal return air panel. IMPORTANT: Sme 1 Phase Units d nt include the sheet metal cver panels ver the hrizntal duct penings, rder the ptinal duct cver package frm factry, if required. Filter Clips Evapratr Cil Bend this flange at 90. Screw t divider with 1 (25.4mm) self-drilling screw. Tp Filter Rack Fig. 1 - Tp Filter Rack 5. Mst new 3 Phase HVAC units will have an ecnmizer plug in the return air chamber which runs back t the cntrl bx. If the unit has the ecnmizer harness/plug, first remve the jumper plug frm the end f the harness t allw the plug frm the ecnmizer t be cnnected. NOTE: The jumper plug shuld be saved fr future use in the event that the ecnmizer is remved frm the unit. The jumper plug is nt needed as lng as the ecnmizer is installed. In the event that yur HVAC unit des nt have a factry installed harness fr the ecnmizer, the extensin harness shipped with the ecnmizer must be installed in the unit. Rute the extensin harness thrugh the HVAC unit as shwn in Fig. 8 & 10. Cnnect extensin harness per wiring diagrams in this bklet. The plug end f the harness extensin will cnnect t the ecnmizer plug in the return chamber and the ther end will be ruted t and cnnect in the cntrl bx. 2

3 Hd Tp Filter Clip Lw Ambient Cmpressr Lckut Outside Air Damper Outside Air Temperature Sensr Outside Air Relief Damper Actuatr Behind Panel Hd Divider Cleanable Aluminum Filter Fig. 2 - Cmpnent Lcatins Barmetric Airflw Fig. 5 - Filter Installatin HVAC Unit Cmpressr Cmpartment 10 5/16 ( mm) Cmpressr Cver Replacement Panel Shipped with NOTE: On units with base rails this cmpressr cver is shipped with the HVAC unit. 21 7/16 ( mm) Replacement Return Chamber Panel Shipped with *Filter Access Panel Als Access t Cntrls 21 7/16 ( mm) Side Panel shipped with HVAC unit. Remve and Discard NOTE: Units with base rails will have a 2 piece panel. Discard the panel cvering the return air chamber and reuse the panel cvering the cmpressr sectin. Fig. 3 - Panel Remval 20 9/16 ( mm) Hd Indr Blwer Panel Fig. 6 - Installatin Cmpressr Panel *Mst HVAC units include this panel. If nt, the ptinal cver panel package must be rdered. 18 3/4 (476.25mm) 20 1/4 (514.35mm) Fig. 6A 20 (508mm) Hd Divider Hd Tp and Side Assembly Replacement Return Chamber Panel Prvided with Outside Air Damper Cmpressr Access Panel Prvided with. On units with base rails this cmpressr cver panel is shipped with the HVAC unit. Fig. 4 - Hd Assembly Relief Dampers 3 Fig. 7 - Installed in HVAC Unit

4 harness frm actuatr and cntrller Rainhd Indr Blwer Main 24V Splice Bx Self Drilling Screw SAT Sensr n Bracket Harness Indr Blwer Panel Indr Blwer Cmpressr Supply Air Temperature (See Fig. 8A) Fig. 8 - Ruting Harness Extensin and Munting SAT Sensr Fig. 8A - SAT Munting Fr Units With Upper Blck Off Panel Supply Air Temperature Sensr (SAT) Indr Blwer Hd SA Plug Filter Indr Fan Harness Cntrl Bx Cmpressr T SATSensr Harness Fig. 9 - SAT Lcatin fr Units Wihut Blck Off Panel Fig Ruting Harness (Tp View) Remve Indr Blwer Panel Fig Indr Blwer Panel 4

5 6. Remve the panel n the HVAC unit cvering the indr blwer. See Fig. 11. The (prvided) Supply Air Temperature (SAT) sensr, which lks like and eyelet terminal, must be installed in the blwer sectin. Attach the (2) pink wires frm the ecnmizer harness (r extensin harness) t the SAT. The SAT sensr is shipped attached t a small bracket. If the HVAC unit has an upper blck ff panel, attach the sensr / bracket as shwn in Fig. 8A using a #10 x 5/8 self-drilling screw. If the unit des nt have an upper blck ff panel, remve the bracket frm the SAT and screw the SAT t the side f the indr blwer, using a #10 x 5/8 self-drilling screw, as shwn in Fig Replace the panel cvering the indr blwer. NOTE: Fr heat pump units, an additinal relay package, Factry kit part number CPRLYKIT001A00, r a field prvided relays must be installed in the blwer sectin. See heat pump diagram fr details. Installatin f Heat Pump Relays When this ecnmizer is used n heat pump HVAC units, relays must be added fr prper peratin. The relays, which are shwn n the attached diagrams, can be field supplied, r relay kit CPRLYKIT001A00 can be rdered. Field prvided relays must be: SPDT, ne ple nrmally pen and ne nrmally clsed. Same plarity. Minimum 124 VA inrush. Acceptable relays include: Hneywell: R8222B117 Hneywell: R422B1124 White Rdgers: White Rdgers: COMPRESSOR Fig. 12 NOTE 1: Field prvided relays can be munted n tp f upper blck ff panel, if applicable INDOOR BLOWER NOTE 1 UPPER BLOCK OFF PANEL (ON SOME UNITS) CONTROL SECTION Lcatin fr heat pump relay package number CPRLYKIT001A00. Relay Installatin: A. If the ptinal relay kit CPRLYKIT001A00 is used, it will munt underneath the indr blwer as shwn in Fig. 12 & 13. Fllw instructins sent with the package. B. If relays are field prvided and installed, they can be munted abve the upper blck ff panel, as shwn in Fig. 12. Use cautin t ensure screws t d nt interfere with blwer peratin, Blunt end screws are recmmended. C. If n upper blck ff panel is present munt relays n cmpressr partitin belw indr blwer n left as shwn in Fig. 12. D. Wire the relays per diagram in this instructin. INDOOR BLOWER Fig Install the cmpressr access panel prvided with the ecnmizer. Secure t HVAC unit per Figs. 6 and 7. Units with base rails will have cmpressr panel shipped with. BLUNT END SCREWS 9. Install the ecnmizer assembly int the return air chamber, making sure the ecnmizer cmpletely cvers the bttm return air pening. See Fig. 6. Remve the red shipping tape hlding the relief dampers clsed. NOTE: The hle in the center f the bttm f the ecnmizer will line up with the mating hle in the HVAC base - hwever d nt insert screw yet. 10. Install the replacement return chamber panel ver the ecnmizer assembly and underneath the drip flange n the HVAC unit. Line up the bttm center hle n the panel with the hle in the bttm f the ecnmizer and the mating hle in the base f the HVAC unit. Insert screw, which will hld all parts in place. Insert screws n bttm, left, and right f panel and n panel right side as well. See Fig. 6. 5

6 11. Remve the hd parts frm the ecnmizer package. Assemble as shwn in Fig. 4 by screwing tgether with prvided #10 x 5/8 screws. 12. Caulk r gasket the back side f the hd mating flanges. Install assembled hd ver the ecnmizer pening in the replacement return chamber panel. Screw in place thrugh pre-punched hles. Make sure all seams are watertight. 13. Open the filter clips n the inside f the hd tp. Insert the aluminum filter int the hd and clse the clips t hld in place. See Fig Remve the filter access panel (hrizntal return panel) and install dispsable filters in filter rack behind filter clips. Fig. 1. NOTE: The ecnmizer cntrl settings and the filters are accessible thrugh the hrizntal return pening n side f HVAC unit. See Fig Thrugh the filter access dr (hrizntal return panel), adjust the settings n the ecnmizer cntrller. Review the settings in the Operatin sectin: 1. The standard ecnmizer cntrller has a factry setting f C fr the utdr air temperature changever and 55 F (13 C) fr the supply air (mixed air) temperature sensr. The utdr air temperature sensr setting can be adjusted at the cntrller. 2. The lw ambient cmpressr lckut switch setting is fixed at 42 F (6 C). 3. The minimum psitin fr the utdr air damper can be cnfigured at the cntrller. 4. Settings fr the ptinal return air temperature sensr, utdr enthalpy sensr, indr enthalpy sensr, and CO2 sensr can als be cnfigured at the cntrller. 16. Replace the filter access panel. Screw in place. 17. Install all ecnmizer accessries then pwer HVAC unit and test cycle ecnmizer. CONFIGURATION Standard Sensrs OUTDOOR AIR TEMPERATURE (OAT) SENSOR The utdr air temperature sensr (HH57AC074) is a 10 t 20mA device used t measure the utdr-air temperature. The utdr-air temperature is used t determine when the can be used fr free cling. The perating range f temperature measurement is 40 t 100 F (4 t 38 C). SUPPLY AIR TEMPERATURE (SAT) SENSOR The supply air temperature sensr is a 3 K thermistr lcated at the inlet f the indr fan. See Fig. 8 and 9. This sensr is field installed. The perating range f temperature measurement is 0 (-18 C) t 158 F (70 C). See Table 4 fr sensr temperature/resistance values. The temperature sensr lks like an eyelet terminal with wires running t it. The sensr is lcated in the crimp end and is sealed frm misture. LOW TEMPERATURE COMPRESSOR LOCKOUT SWITCH The is equipped with a lw ambient temperature lckut switch lcated in the utdr airstream which is used t lck ut the cmpressrs belw a 42 F (6 C) ambient temperature. See Fig. 2. Table 4 - Supply Air Sensr Temperature/ Resistance Values TEMPERATURE (F) CELSIUS (C) RESISTANCE (hms) , , , , , , , , , , Cntrl Mdes Determine the cntrl mde befre set up f the cntrl. Sme mdes f peratin may require different sensrs. Refer t Table 3. The is supplied frm the factry with a supply air temperature sensr, a lw temperature cmpressr lckut switch, and an utdr air temperature sensr. This allws fr peratin f the with utdr air dry bulb changever cntrl. Additinal accessries can be added t allw fr different types f changever cntrl and peratin f the and unit. OUTDOOR DRY BULB CHANGEOVER The standard cntrller is shipped frm the factry cnfigured fr utdr dry bulb changever cntrl. The utdr air and supply air temperature sensrs are included as standard. Fr this cntrl mde, the utdr temperature is cmpared t an adjustable set pint selected n the cntrl. If the utdr-air temperature is abve the set pint, the will adjust the utdr air dampers t minimum psitin. If the utdr-air temperature is belw the set pint, the psitin f the utdr-air dampers will be cntrlled t prvide free cling using utdr air. When in this mde, the LED next t the free cling set pint ptentimeter will be n. The changever temperature set pint is cntrlled by the free cling set pint ptentimeter lcated n the cntrl. See Fig. 14. The scale n the ptentimeter is A, B, C, and D. See Fig. 15 fr the crrespnding temperature changever values. DIFFERENTIAL DRY BULB CONTROL Fr differential dry bulb cntrl the standard utdr dry bulb sensr is used in cnjunctin with an additinal accessry return air sensr (part number CRTEMPSN002A00). The accessry sensr must be munted in the return airstream. See Fig. 16. In this mde f peratin, the utdr-air temperature is cmpared t the return-air temperature and the lwer temperature airstream is used fr cling. When using this mde f changever cntrl, turn the free cling/enthalpy set pint ptentimeter fully clckwise t the D setting. See Fig. 15. OUTDOOR ENTHALPY CHANGEOVER Fr enthalpy cntrl, accessry enthalpy sensr (part number HH57AC078) is required. Replace the standard utdr dry bulb temperature sensr with the accessry enthalpy sensr in the same munting lcatin. 6

7 ma EXHAUST FAN SETPOINT (4) LED LIGHTS WHEN EXHAUST CONTACT IS MADE MINIMUM DAMPER POSITION SETTING MAXIMUM DAMPER DEMAND CONTROL VENTILATION SETPOINT LED LIGHTS WHEN DEMAND CONTROL VENTILATION INPUT IS ABOVE SETPOINT DEMAND CONTROL VENTILATION SETPOINT LED LIGHTS WHEN OUTDOOR AIR IS SUITABLE FOR FREE COOLING ENTHALPY CHANGEOVER SETPOINT Fig Cntrller Ptentimeter and LED Lcatins 45 (7) LED ON D LED OFF 50 (10) 55 (13) 60 (16) LED ON LED OFF C 65 (18) 70 (21) LED ON B LED OFF 75 (24) 80 (27) 85 (29) Degrees in Fahrenheit (Celsius) LED ON A LED OFF 90 (32) 95 (35) 100 (38) ECONOMIZER RETURN AIR SENSOR RETURN DUCT (FIELD-PROVIDED) Fig Return Air Temperature r Enthalpy Sensr Munting Lcatin INDOOR AIR QUALITY (IAQ) SENSOR INPUT The IAQ input can be used fr demand cntrl ventilatin cntrl based n the level f CO 2 measured in the space r return air duct. Munt the accessry IAQ sensr accrding t manufacturer specificatins. The IAQ sensr shuld be wired t the AQ and AQ1 terminals f the cntrller. Adjust the DCV ptentimeters t crrespnd t the DCV vltage utput f the indr air quality sensr at the userdetermined set pint. See Fig. 19. If a separate field-supplied transfrmer is used t pwer the IAQ sensr, the sensr must nt be grunded r the cntrl bard will be damaged. Fig Outdr Air Temperature Changever Set Pints When the utdr air enthalpy rises abve the utdr enthalpy changever set pint, the utdr-air damper mves t its minimum psitin. The utdr enthalpy changever set pint is set with the utdr enthalpy set pint ptentimeter n the cntrller. The set pints are A, B, C, and D. See Fig. 15. The factry-installed 620- hm jumper must be in place acrss terminals SR and SR+ n the cntrller. DIFFERENTIAL ENTHALPY CONTROL Fr differential enthalpy cntrl, the cntrller uses tw enthalpy sensrs (HH57AC078 and CRENTDIF004A00), ne in the utside air and ne in the return airstream. The cntrller cmpares the utdr air enthalpy t the return air enthalpy t determine use. The cntrller selects the lwer enthalpy air (return r utdr) fr cling. Fr example, when the utdr air has a lwer enthalpy than the return air and is belw the set pint, the pens t bring in utdr air fr free cling. Replace the standard utside air dry bulb temperature sensr with the accessry enthalpy sensr in the same munting lcatin. Munt the return air enthalpy sensr in the return air duct. See Fig. 16. When using this mde f changever cntrl, turn the enthalpy set pint ptentimeter fully clckwise t the D setting. 7

8 Fig Enthalpy Changever Setpints CO 2 MAX RANGE SETTING RANGE CONFIGURATION (ppm) DAMPER VOLTAGE FOR MAX VENTILATION RATE Fig Cntrller Fig CO 2 Sensr Maximum Range Setting 8

9 EXHAUST SET POINT ADJUSTMENT The exhaust set pint will determine when the exhaust fan runs based n damper psitin (if pwer exhaust is installed). The set pint is mdified with the Exhaust Fan Set Pint (EXH SET) ptentimeter. The set pint represents the damper psitin abve which the exhaust fans will be turned n. When there is a call fr exhaust, the cntrller prvides a 45 ± 15 secnd delay befre exhaust fan activatin t allw the dampers t pen. This delay allws the damper t reach the apprpriate psitin t avid unnecessary fan verlad. MINIMUM POSITION CONTROL There is a minimum damper psitin ptentimeter n the cntrller. See Fig. 14. The minimum damper psitin maintains the minimum airflw int the building during the ccupied perid. When using demand ventilatin, the minimum damper psitin represents the minimum ventilatin psitin fr VOC (vlatile rganic cmpund) ventilatin requirements. The maximum demand ventilatin psitin is used fr fully ccupied ventilatin. When demand ventilatin cntrl is nt being used, the minimum psitin ptentimeter shuld be used t set the ccupied ventilatin psitin. The maximum demand ventilatin psitin shuld be turned fully clckwise. Adjust the minimum psitin ptentimeter t allw the minimum amunt f utdr air, as required by lcal cdes, t enter the building. Make minimum psitin adjustments with at least 10 F (5.5 C) temperature difference between the utdr and return-air temperatures. T determine the minimum psitin setting, perfrm the fllwing prcedure: 1. Calculate the apprpriate mixed air temperature using the fllwing frmula: (T x OA/100) + (T R x RA/100) = T M T O = Outdr-Air Temperature OA = Percent f Outdr Air T R = Return-Air Temperature RA = Percent f Return Air T M = Mixed-Air Temperature As an example, if lcal cdes require 10% utdr air during ccupied cnditins, utdr-air temperature is 60 F (15.6 C), and return-air temperature is 75 F (23.9 C). (60 x.10) + (75 x.90) = 73.5 F (23.1 C) 2. Discnnect the supply air sensr frm terminals T and T1. 3. Ensure that the factry-installed jumper is in place acrss terminals P and P1. If remte damper psitining is being used, make sure that the terminals are wired accrding t Fig. 9 and that the minimum psitin ptentimeter is turned fully clckwise. 4. Cnnect 24 vac acrss terminals TR and TR1. 5. Carefully adjust the minimum psitin ptentimeter until the measured mixed-air temperature matches the calculated value. 6. Recnnect the supply air sensr t terminals T and T1. Remte cntrl f the damper is desirable when requiring additinal temprary ventilatin. If a field-supplied remte ptentimeter (Hneywell part number S963B1128) is wired t the cntrller, the minimum psitin f the damper can be cntrlled frm a remte lcatin. T cntrl the minimum damper psitin remtely, remve the factryinstalled jumper n the P and P1 terminals n the cntrller. Wire the field-supplied ptentimeter t the P and P1 terminals n the cntrller. DAMPER MOVEMENT Damper mvement frm full pen t full clsed (r vice versa) takes 2 1/2 minutes. THERMOSTATS The cntrl wrks with cnventinal thermstats that have a Y1 (cl stage 1), Y2 (cl stage 2), W1 (heat stage 1), W2 (heat stage 2), and G (fan). The cntrl des nt supprt space temperature sensrs. Cnnectins are made at the thermstat terminal cnnectin bard lcated in the main cntrl bx. OCCUPANCY CONTROL The factry default cnfiguratin fr the cntrl is ccupied mde. Occupied status is prvided by the black jumper frm terminal TR t terminal N. When unccupied mde is desired, install a field supplied timeclck functin in place f the jumper between TR and N. When the timeclck cntacts are clsed, the cntrl will be in ccupied mde. When the timeclck cntacts are pen (remving the 24-v signal frm terminal N), the IV will be in unccupied mde. DEMAND CONTROLLED VENTILATION (DCV) When using the fr demand cntrlled ventilatin, there are sme equipment selectin criteria which shuld be cnsidered. When selecting the heat capacity and cl capacity f the equipment, the maximum ventilatin rate must be evaluated fr design cnditins. The maximum damper psitin must be calculated t prvide the desired fresh air. Typically the maximum ventilatin rate will be abut 5 t 10% mre than the typical cfm required per persn, using nrmal utside air design criteria. An expnential anticipatry strategy shuld be taken with the fllwing cnditins: a zne with a large area, varied ccupancy, and equipment that cannt exceed the required ventilatin rate at design cnditins. Exceeding the required ventilatin rate means the equipment can cnditin air at a maximum ventilatin rate that is greater than the required ventilatin rate fr maximum ccupancy. An expnential-anticipatry strategy will cause the fresh air supplied t increase as the rm CO2 level increases even thugh the CO 2 set pint has nt been reached. By the time the CO 2 level reaches the set pint, the damper will be at maximum ventilatin and shuld maintain the set pint. In rder t have the CO 2 sensr cntrl the ecnmizer damper in this manner, first determine the damper vltage utput fr minimum r base ventilatin. Base ventilatin is the ventilatin required t remve cntaminants during unccupied perids. The fllwing equatin may be used t determine the percent f utside-air entering the building fr a given damper psitin. Fr best results there shuld be at least a 10 F (5.5 C) difference in utside and return-air temperatures. (T x OA/100) + (T R x RA/100) = T M T O = Outdr-Air Temperature OA = Percent f Outdr Air T R = Return-Air Temperature RA = Percent f Return Air T M = Mixed-Air Temperature Once base ventilatin has been determined, set the minimum damper psitin ptentimeter t the crrect psitin. The same equatin can be used t determine the ccupied r maximum ventilatin rate t the building. Fr example, an utput f 3.6 vlts t the actuatr prvides a base ventilatin rate f 5% and an utput f 6.7 vlts prvides the maximum ventilatin rate f 20% (r base plus 15 cfm per persn). Use Fig. 16 t determine the maximum setting f the CO 2 sensr. Fr example, a 1100 ppm set pint relates t a 15 cfm per persn design. Use the 1100 ppm curve n Fig. 19 t find the pint when the CO 2 sensr utput will be 6.7 vlts. Line up the pint n the graph with the left side f the chart t determine that the range cnfiguratin fr the CO 2 sensr shuld be 1800 ppm. The cntrller will utput the 6.7 vlts frm the CO 2 sensr t the actuatr when the CO 2 cncentratin in the space is at 1100 ppm. 9

10 The DCV set pint may be left at 2 vlts since the CO 2 sensr vltage will be ignred by the cntrller until it rises abve the 3.6 vlt setting f the minimum psitin ptentimeter. Once the fully ccupied damper psitin has been determined, set the maximum damper demand cntrl ventilatin ptentimeter t this psitin. D nt set t the maximum psitin as this can result in verventilatin t the space and ptential high-humidity levels. CO2 SENSOR CONFIGURATION The CO 2 sensr has preset standard vltage settings that can be selected anytime after the sensr is pwered up. See Table 5. Use setting 1 r 2 fr equipment. See Table Press Clear and Mde buttns. Hld at least 5 secnds until the sensr enters the Edit mde. 2. Press Mde twice. The STDSET Menu will appear. 3. Use the Up/Dwn buttn t select the preset number. See Table Press Enter t lck in the selectin. 5. Press Mde t exit and resume nrmal peratin. The custm settings f the CO 2 sensr can be changed anytime after the sensr is energized. Fllw the steps belw t change the nn-standard settings: 1. Press Clear and Mde buttns. Hld at least 5 secnds until the sensr enters the Edit mde. 2. Press Mde twice. The STDSET Menu will appear. 3. Use the Up/Dwn buttn t tggle t the NONSTD menu and press Enter. 4. Use the Up/Dwn buttn t tggle thrugh each f the nine variables, starting with Altitude, until the desired setting is reached. 5. PressMde t mve thrugh the variables. 6. Press Enter t lck in the selectin, then press Mde t cntinue t the next variable. DEHUMIDIFICATION OF FRESH AIR WITH DCV CONTROL Infrmatin frm ASHRAE indicates that the largest humidity lad n any zne is the fresh air intrduced. Fr sme applicatins, an energy recvery unit can be added t reduce the misture cntent f the fresh air being brught int the building when the enthalpy is high. In mst cases, the nrmal heating and cling prcesses are mre than adequate t remve the humidity lads fr mst cmmercial applicatins. If nrmal rftp heating and cling peratin is nt adequate fr the utdr humidity level, an energy recvery unit and/r a dehumidificatin ptin shuld be cnsidered. OPERATION Sequence f Operatin When free cling is nt available, the cmpressr will be cntrlled by the thermstat. When free cling is available, the utdr-air damper is mdulated by the cntrl t prvide a 50 t 55 F (10 t 12.8 C) supply-air temperature int the zne. As the supply-air temperature fluctuates abve 55 F(12.8 C) r belw 50 F (10 C), the dampers will be mdulated (pen r clse) t bring the supply-air temperature back within the set pints. Fr peratin, there must be a thermstat call fr the fan (G). This will mve the damper t its minimum psitin during the ccupied mde. Abve 50 F (10 C) supply-air temperature, the dampers will mdulate frm 100% pen t the minimum pen psitin. Frm 50 F (10 C) t 45 F (7.2 C) supply-air temperature, the dampers will maintain at the minimum pen psitin. Belw 45 F (7.2 C), the dampers will be cmpletely shut. As the supply-air temperature rises, the dampers will cme back pen t the minimum pen psitin nce the supply-air temperature rises t 48 F (8.9 C). If pwer exhaust is installed, as the utdr-air damper pens and clses, the pwer exhaust fans will be energized and deenergized. If field-installed accessry CO 2 sensrs are cnnected t the cntrl, a demand cntrlled ventilatin strategy will begin t perate. As the CO 2 level in the zne increases abve the CO 2 set pint, the minimum psitin f the damper will be increased prprtinally. As the CO 2 level decreases because f the increase in fresh air, the utdr-air damper will be prprtinally clsed. Damper psitin will fllw the higher demand cnditin frm DCV mde r free cling mde. Damper mvement frm full clsed t full pen (r vice versa) will take between 1 1/2 and 2 1/2 minutes. If free cling can be used as determined frm the apprpriate changever cmmand (switch, dry bulb, enthalpy curve, differential dry bulb, r differential enthalpy), a call fr cling (Y1 clses at the thermstat) will cause the cntrl t mdulate the dampers pen t maintain the supply air temperature set pint at 50 t 55 F (10 t 12.8 C). As the supply air temperature drps belw the set pint range f 50 t 55 F (10 t 12.8 C), the cntrl will mdulate the utdr-air dampers clsed t maintain the prper supply-air temperature. Table 5 - CO Sensr Standard Settings 2 SETTING EQUIPMENT OUTPUT VENTILATION RATE (cfm/persn) 1 Prprtinal Any 2 Interface w/standard Building Cntrl System Prprtinal Any 3 Expnential Any 4 Prprtinal 15 5 Prprtinal 20 6 Expnential 15 7 Expnential 20 8 Health & Safety Prprtinal -- Parking/ Air Intakes/ 9 Lading Dcks Prprtinal -- ANALOG OUTPUT CO2 CONTROL RANGE (ppm) OPTIONAL RELAY SETPOINT (ppm) RELAY HYSTERESIS (ppm) 4-20 ma v 7-20mA mA mA mA mA mA mA mA

11 AIRFLOW DATA IN DOWNFLOW CONFIGURATION WITH ECONOMIZER, WET COIL AND 1 IN (25.4mm) FILTER Mdel Mtr Wire External Static Pressure (in W.C.) Capacity Unit Base Speed Clr * Cmpsite High Black SCFM * Cmpsite High Black SCFM *Excluding 3 tn 14SEER HP & Dual Fuel Mdels TROUBLESHOOTING See Table 6 fr lgic. An simulatr prgram is available t help with training and trubleshting. Preparatin This prcedure is used t prepare the fr trubleshting. N trubleshting r testing is dne by perfrming the fllwing prcedure. NOTE: This prcedure requires a 9-v battery, 1.2 kil-hm resistr, and a 5.6 kil-hm resistr which are nt supplied with the. 1. Discnnect pwer at TR and TR1. All LEDs shuld be ff. Exhaust fan cntacts shuld be pen. 2. Discnnect device at P and P1. 3. Jumper P t P1. 4. Discnnect wires at T and T1. Place 5.6 kil-hm resistr acrss T and T1. 5. Jumper TR t Jumper TR t N. 7. If cnnected, remve sensr frm terminals S O and +. Cnnect 1.2 kil-hm 4074EJM checkut resistr acrss terminals S O and Put 620-hm resistr acrss terminals SR and Set minimum psitin, DCV set pint, and exhaust ptentimeters fully CCW (cunterclckwise). 10. Set DCV maximum psitin ptentimeter fully CW (clckwise). 11. Set enthalpy ptentimeter t D. 12. Apply pwer (24 vac) t terminals TR and TR1. Differential Enthalpy T check differential enthalpy: 1. Make sure preparatin prcedure has been perfrmed. 2. Place 620-hm resistr acrss S O and Place 1.2 kil-hm resistr acrss S R and +. The Free Cl LED shuld be lit. 4. Remve 620-hm resistr acrss S O and +. The Free Cl LED shuld turn ff. 5. Return settings and wiring t nrmal after cmpleting trubleshting. Single Enthalpy T check single enthalpy: 1. Make sure preparatin prcedure has been perfrmed. 2. Set the enthalpy ptentimeter t A (fully CCW). The Free Cl LED shuld be lit. 3. Set the enthalpy ptentimeter t D (fully CW). The Free Cl LED shuld turn ff. 4. Return settings and wiring t nrmal after cmpleting trubleshting. DCV (Demand Cntrlled Ventilatin) and Pwer Exhaust T check DCV and Pwer Exhaust: 1. Make sure preparatin prcedure has been perfrmed. 2. Ensure terminals AQ and AQ1 are pen. The LED fr bth DCV and Exhaust shuld be ff. The actuatr shuld be fully clsed. 3. Cnnect a 9-v battery t AQ (psitive nde) and AQ1 (negative nde). The LED fr bth DCV and Exhaust shuld turn n. The actuatr shuld drive t between 90 and 95% pen. 4. Turn the Exhaust ptentimeter CW until the Exhaust LED turns ff. The LED shuld turn ff when the ptentimeter is apprximately 90%. The actuatr shuld remain in psitin. 5. Turn the DCV set pint ptentimeter CW until the DCV LED turns ff. The DCV LED shuld turn ff when the ptentimeter is apprximately 9-v. The actuatr shuld drive fully clsed. 6. Turn the DCV and Exhaust ptentimeters CCW until the Exhaust LED turns n. The exhaust cntacts will clse 30 t 120 secnds after the Exhaust LED turns n. 7. Return IV settings and wiring t nrmal after cmpleting trubleshting. 11

12 DCV Minimum and Maximum Psitin T check the DCV minimum and maximum psitin: 1. Make sure preparatin prcedure has been perfrmed. 2. Cnnect a 9-v battery t AQ (psitive nde) and AQ1 (negative nde). The DCV LED shuld turn n. The actuatr shuld drive t between 90 and 95% pen. 3. Turn the DCV Maximum Psitin ptentimeter t midpint. The actuatr shuld drive t between 20 and 80% pen. 4. Turn the DCV Maximum Psitin ptentimeter t fully CCW. The actuatr shuld drive fully clsed. 5. Turn the Minimum Psitin ptentimeter t midpint. The actuatr shuld drive t between 20 and 80% pen. 6. Turn the Minimum Psitin Ptentimeter fully CW. The actuatr shuld drive fully pen. 7. Remve the jumper frm TR and N. The actuatr shuld drive fully clsed. 8. Return settings and wiring t nrmal after cmpleting trubleshting. Supply-Air Input T check supply-air input: 1. Make sure preparatin prcedure has been perfrmed. 2. Set the Enthalpy ptentimeter t A. The Free Cl LED turns n. The actuatr shuld drive t between 20 and 80% pen. 3. Remve the 5.6 kil-hm resistr and jumper T t T1. The actuatr shuld drive fully pen. 4. Remve the jumper acrss T and T1. The actuatr shuld drive fully clsed. 5. Return settings and wiring t nrmal after cmpleting trubleshting. Trubleshting Cmpletin This prcedure is used t return the t peratin. N trubleshting r testing is dne by perfrming the fllwing prcedure. 1. Discnnect pwer at TR and TR1. 2. Set enthalpy ptentimeter t previus setting. 3. Set DCV maximum psitin ptentimeter t previus setting. 4. Set minimum psitin, DCV set pint, and exhaust ptentimeters t previus settings. 5. Remve 620-hm resistr frm terminals SR and Remve 1.2 kil-hm checkut resistr frm terminals SO and +. If used, recnnect sensr frm terminals SO and Remve jumper frm TR t N. 8. Remve jumper frm TR t Remve 5.6 kil-hm resistr frm T and T1. Recnnect wires at T and T Remve jumper frm P t P1. Recnnect device at P and Table 6 - Input/Output Lgic Demand Cntrl Ventilatin (DCV) Belw set (DCV LED Off) Abve set (DCV LED On) INPUTS Enthalpy Outdr High (Free Cling LED Off) Lw (Free Cling LED On) High (Free Cling LED Off) Lw (Free Cling LED On) Return Lw High Lw High Y1 Y2 Cmpressr Stage 1 OUTPUTS N Terminal Occupied Unccupied Damper Minimum psitin Clsed On On On On On Off On Off Off Off Off Off On On On Off Mdulating** (between min. On Off Off Off psitin and full-pen) Off Off Off Off Minimum psitin Clsed On On On On On Off On Off Off Off Off Off On On On Off On Off Off Off Off Off Off Off Stage 2 Mdulating (between min. psitin and DCV maximum) Mdulating** * Mdulating** (between clsed and full-pen Mdulating (between clsed and DCV miximum) Mdulating *Fr single enthalpy cntrl, the mdule cmpares utdr enthalpy t the ABCD set pint. Pwer at N terminal determines Occupied/Unccupied setting: 24 vac (Occupied), nw pwer (Unccupied). **Mdulating is based n the supply-air sensr signal. Mdulatin is based n the DCV signal. ***Mdulatin is based n the greater f DCV and supply-air sensr signals, between minimum psitin and either maximum psitin (DCV) r fully pen (supply-air signal). Mdulating is based n the greater f DCV and supply-air sensr signals, between clsed and wither maximum psitin (DCV) r fully pen (supply-air signal). 12

13 WIRING FOR AC AND GAS/ELECTRIC MODELS 13

14 WIRING FOR HEAT PUMP AND DUAL FUEL MODELS Cpyright 2009 CAC/BDP 7310 W.Mrris St. Indianaplis, IN Printed in U.S.A. Editin Date: 02/09 Catalg N. IIK-CPECOMZR Manufacturer reserves the right t discntinue, r change at any time, specificatins r designs withut ntice and withut incurring bligatins Replaces: IIK-CPECOMZR-03