Day and Night VS Air Handler Installation.pdf

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INSTALLATION INSTRUCTIONSBLOWER MOTOR - CFMFAN CONTROL BOARD CONFIGURATION TAPSFan Control Board taps are used by the installer toconfigure a system. The ECM motor uses the selectedtaps to modify its operation to a pre--programmed table ofairflows (Refer to Table 2 and Table 3). Airflows arebased on system size or mode of operation and thoseairflows are modified in response to other inputs such asthe need for de--humidification. (Refer to Figure 17 andFigure 18).FVM fan coils must be configured to operate properly withsystem components with which it is installed. Tosuccessfully configure a basic system (see informationprinted on circuit board label located next to select pins),move the 6 select wires to the pins which match thecomponents used.Fan Coils: FVM2X, FVM4XNote that airflow marked is the airflow which will besupplied in emergency heat mode and heating mode onair conditioners when electric heat is the primary heatingsource.In heat pump heating mode when electric heaters areenergized, the ECM motor will run the higher of heatpump heating airflow and electric heater airflow to ensuresafe heater operation. The factory selection is the largestheater range approved. (Refer to Figure 17, A asindicated)Figure 18Fan Control BoardWiring ArrangementFigure 17Fan Control BoardLOW VOLTAGE TERMINAL BLOCKFAN CONTROL BOARDVIOSEC1 SEC2AUX HEAT KW/CFMJ2HRW1AC/HP SIZEW2ABCDVIOBLUORNBLKSEC1SEC2AUX HEAT KW/CFMA B C DAC/HP SIZEA B C DSYSTEM TYPEAC HP-COMFORT HP-EFFNOMAC/HP CFM ADJUSTLOON/OFF DELAYHIJ2HRW 1W 2Y 1Y/Y 2GOBLUORNBLKWHTYELLOSYSTEM TYPEAC HP -COMFORT HP-EFFAC/HP CFM ADJUSTNOMLOON/OFF DELAY309000CEBD430226--01BHIENHCONTINUOUS FANMED HI YELHEATER/MOTORCESS430226--01BAUX1Y1Y/Y 2GOCHUM1AUX2 HUM224VACGRYEWHT309000ENHCFYELLOCONTINUOUS FANMED HI YELCEBD430226--01B CESS430226--01BAUX1AUX2HUM1HUM224VACHEATER/MOTORGRYMOLEX 12 -PIN CONNECTORA. AUXILIARY HEAT KW/CFMInstaller must select the auxiliary heat airflow approvedfor application with kW size heater installed. If no heater isinstalled, this step can be skipped. (Refer to Figure 17,A)The select pins are marked A, B, C, D. Heater kW rangescorresponding to each letter are listed in a chart on theunit wiring diagram. Refer to the unit wiring diagram andselect the pin for the heater size being used (examplewiring diagram in Figure 21).The airflow must be greater than the minimum CFM forelectric heater application with the size system installedfor safe and continuous operation. (Refer to Table 4 andTable 5 for airflow delivery and minimum CFM.)B. AC/HP SIZESelect System Size InstalledThe factory setting for air conditioner or heat pump size isthe largest outdoor unit meant for application with themodel of fan coil purchased. Installer needs to select airconditioner or heat pump size to ensure that airflowdelivered falls within proper range for the size unitinstalled. This applies to all operational modes with theexception of electric heat modes. (Refer to Figure 17, B)The select pins are marked A, B, C, D. Outdoor unit sizescorresponding to each letter are listed in a chart on theunit wiring diagram. Refer to the unit wiring diagram andselect the pin for the outdoor unit size being used(example wiring diagram in Figure 21).12 Specifications are subject to change without notice496 01 5001 02
INSTALLATION INSTRUCTIONSC. SYSTEM TYPESelect System Type Installed AC or HPThe type of system must be selected:1. AC -- Air Conditioner provides approximately 350CFM per ton for greater efficiency and humiditycontrol with the AC/HP CFM ADJUST set to thenominal (NOM) tap. (To achieve approximately 400CFM per ton move tap to (HI) position. Refer toappropriate airflow tables for exact CFM setting.)2. HP--COMFORT -- Heat Pump Comfort Providesapproximately 315 CFM per ton for higher thannormal heating air delivery temperature. Providesapproximately 350 CFM per ton cooling airflow forgood humidity removal with the AC/HP CFMADJUST set to the nominal (NOM) tap.3. HP--EFF -- Heat Pump Efficiency provides sameairflow for heating and cooling modes to increaseoverall HP efficiency; approximately 350 CFM perton with the AC/HP CFM ADJUST set to thenominal (NOM) tap.The factory setting is AC (Refer to Figure 17, C).D. AC/HP CFM ADJUSTSelect Medium, Low, or High AirflowTo provide airflow at rates described above, the AC/HPADJUST select is factory set to the nominal (NOM) tap.The adjust selections HI/LO will regulate airflow suppliedfor all operational modes, except non--heat pump heatingmodes.HI provides 15% airflow over nominal unit size selectedand LO provides 10% airflow below nominal unit sizeselected.Adjust selection options are provided to adjust airflowsupplied to meet individual installation needs for suchthings as noise, comfort, and humidity removal. (Refer toFigure 17, D as indicated.)E. ON/OFF DELAYSelect desired time delay profileNOTE: Delay selections are active in cooling and heatpump heating modes only. Auxiliary heating modes havea one (1) minute off delay and zero (0) on delayprogrammed into the ECM motor that cannot beoverridden.Four (4) motor operation delay profiles are provided tocustomize and enhance system operation. (Refer toFigure 17, E as indicated.)Selection options are:1. 0/90: No on delay and 90 second off delay at 100%airflow (factory setting).2. 30/90: 30 second on delay with no airflow and 90second off delay at 100% airflow profile. Used whenit is desirable to allow system coils time toheat--up/cool--down in conjunction with the airflow.Fan Coils: FVM2X, FVM4X3. 0/0: No delay option. Used for servicing unit or whena thermostat is utilized to perform delay functions.4. ENH: enhanced selection, provides a 30 second ondelay with no airflow followed by 150 seconds at70% airflow, and no off delay for added comfort.This profile will minimize cold blow in heat pumpoperation and could enhance system efficiency.F. CONTINUOUS FANSelect desired fan speed when thermostat is set oncontinuous fanNOTE: If installed with a two--stage outdoor unit, do notselect HI speed continuous fan. If HI is selected, lowstage compression will also run HI fan speed possiblyresulting in insufficient dehumidification.1. LO speed -- factory setting, 50% cooling modeairflow.2. MED speed -- move connector to MED, 65% coolingmode airflow.3. HI speed -- move connector to HI, 100% coolingmode airflow. (Refer to Figure 17, F as indicated.)G. LOW -VOLTAGE CIRCUITFusing and ReferenceThe low--voltage circuit is fused by a board--mounted5--amp automotive fuse placed in series with thetransformer SEC2 and the R circuit. The C circuit of thetransformer is referenced to chassis ground through aprinted circuit run at SEC1 connected to metal standoffmarked with ground symbol.H. BASIC FAN COIL CONFIGURATIONThe following basic configuration of the fan coil willprovide ARI rated performance of an air conditioner:1. AUX HEAT KW/CFM -- Select the heater range forthe size electric heater installed.2. AC/HP SIZE -- Select system size installed.3. SYSTEM TYPE -- Select system type AC4. AC/HP CFM ADJUST -- Select NOM.5. ON/OFF DELAY -- Select 0/90 profile.6. CONTINUOUS FAN -- Select desired fan speedwhen thermostat is set to continuous fan.The following basic configuration of the fan coil willprovide ARI rated performance of a heat pump:1. AUX HEAT KW/CFM -- Select the heater range forthe size electric heater installed.2. AC/HP SIZE -- Select system size installed.3. SYSTEM TYPE -- Select system type HP--EFF4. AC/HP CFM ADJUST -- Select NOM.5. ON/OFF DELAY -- Select 0/90 profile.6. CONTINUOUS FAN -- Select desired fan speedwhen thermostat is set to continuous fan.496 01 5001 02 Specifications are subject to change without notice13
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