Page 2 - ENVISION RESIDENTIAL INSTALLATION MANUAL; Model Nomenclature
2 ENVISION RESIDENTIAL INSTALLATION MANUAL Model Nomenclature N D V 049 A 1 1 1 C T L Model Type Return Air Configuration N= Envision L= Left R= Right Compressor Type D= Dual Capacity Discharge Air Configuration S= Single Speed B= Bottom T= Top Cabinet Configuration S= Side V= Vertical E= End H= Hor...
Page 3 - Table of Contents
3 ENVISION RESIDENTIAL INSTALLATION MANUAL Table of Contents General Installation Information 4-8 Closed Loop Ground Source Systems 9 Open Loop Ground Water Systems 10 Desuperheater Connection & Startup 11-12 Electrical Connections 13-14 Electronic Thermostat Installation 14 Auxiliary Heat Ratin...
Page 4 - Moving and Storage; Care should be taken when units are located in; Installing Vertical Units; fi re extinguisher available.; Safety Considerations; General Installation Information; Figure 1: Ver tical Unit Mounting
4 ENVISION RESIDENTIAL INSTALLATION MANUAL Moving and Storage Move units in the normal “up” orientation. Horizontal units may be moved and stored per the information on the packag- ing. Do not stack more than three units in total height. Vertical units may be stored one upon another to a maximum hei...
Page 5 - Installing Horizontal Units; Figure 2: Horizontal Unit Mounting
5 ENVISION RESIDENTIAL INSTALLATION MANUAL Installing Horizontal Units Remove and discard the compressor hold down shipping bolt located at the front of the compressor mounting bracket prior to setting the unit in place. Horizontal units are available with side or end discharge. Horizontal units are...
Page 6 - Duct System; The proper water fl ow must be provided to each unit whenever the
6 ENVISION RESIDENTIAL INSTALLATION MANUAL Duct System An air outlet collar is provided on vertical top air discharge units and all horizontal units to facilitate a duct connection (vertical bottomfl ow units have no collar). A fl exible connector is recommended for discharge and return air duct con...
Page 7 - Water Quality
7 ENVISION RESIDENTIAL INSTALLATION MANUAL Water Quality In ground water situations where scaling could be heavy or where biological growth such as iron bacteria will be pres- ent, a closed loop system is recommended. The heat exchanger coils in ground water systems may, over a period of time, lose ...
Page 8 - Drain; Figure 6: Unit Pitch for Drain; Freeze Protection
8 ENVISION RESIDENTIAL INSTALLATION MANUAL 1/2'' Pitch Drain 1.5" 1.5" 3/4” PVC tube stub 3/4" PVCCoupling Vent (if needed) 3/4" PVC 1/8" per foot Figure 6: Unit Pitch for Drain Figure 5: Horizontal Drain Connection Freeze Protection Set the freeze sensing switch SW2-2 on the pri...
Page 9 - Figure 7: Closed Loop Ground Source Application; Closed Loop Ground Source Systems; Multiple Units on; When two units are connected to; Additional information can be found
9 ENVISION RESIDENTIAL INSTALLATION MANUAL Figure 7: Closed Loop Ground Source Application Closed Loop Ground Source Systems Note: For closed loop systems with antifreeze protection, set SW2-2 to the “loop” position (see table on page 28). Once piping is completed between the unit, pumps and the gro...
Page 10 - Open Loop Ground Water Systems; Acc Com; Solenoid; Comfort; Figure 9b: Open Loop Solenoid Valve Connection Option
10 ENVISION RESIDENTIAL INSTALLATION MANUAL Open Loop Ground Water Systems Typical open loop piping is shown below. Always maintain water pressure in the heat exchanger by placing water control valves at the outlet of the unit to prevent mineral precipitation. Use a closed, bladder-type expansion ta...
Page 11 - Desuperheater Connections; Figure 11: Typical Desuperheater Installation; CAUTION: Elements will burn out if energized dry.; Figure 12: Desuperheater Installation In Preheat Tank; Water Tank Preparation
11 ENVISION RESIDENTIAL INSTALLATION MANUAL Desuperheater Connections To maximize the benefi ts of the desuperheater a minimum 50-gallon water heater is recommended. For higher demand applications, use an 80-gallon water heater or two 50-gallon water heaters connected in a series as shown below. Ele...
Page 12 - Plumbing Installation; or damage to the desuperheater circulator will occur.; Desuperheater Startup; be
12 ENVISION RESIDENTIAL INSTALLATION MANUAL Plumbing Installation 1. Inspect the dip tube in the water heater cold inlet for a check valve. If a check valve is present it must be removed or damage to the desuperheater circulator will occur. 2. Remove drain valve and fi tting.3. Thread the 3/4-inch N...
Page 13 - Electrical Connections; General; wires must be switched on terminal strip PS.; Ground Fastener
13 ENVISION RESIDENTIAL INSTALLATION MANUAL Electrical Connections General Be sure the available power is the same voltage and phase as that shown on the unit serial plate. Line and low voltage wiring must be done in accordance with local codes or the National Electric Code, whichever is applicable....
Page 14 - Auxiliar y Heat Ratings; Pump Wiring; Electronic Thermostat
14 ENVISION RESIDENTIAL INSTALLATION MANUAL Auxiliar y Heat Ratings KW BTU/HR Min Envision Series Compatibility Model 208V 230V Stages 208V 230V CFM 022 026 - 030 036 - 049 060 - 072 EAM(H)5 3.6 4.8 1 12,300 16,300 450 • • EAM(H)8 5.7 7.6 2 19,400 25,900 550 • • EAM(H)10 7.2 9.6 2 24,600 32,700 650 ...
Page 15 - Unit Electrical Data; Single speed with ECM motor
15 ENVISION RESIDENTIAL INSTALLATION MANUAL Unit Electrical Data Single speed with ECM motor HWG Ext Fan Total Min Max Pump Loop Motor Unit Circ Fuse/ MCC RLA LRA FLA FLA FLA FLA Amp HACR 14.0 9.0 48.0 0.4 5.4 4.0 18.8 21.0 30 20.0 12.8 58.3 0.4 5.4 4.0 22.6 25.8 35 22.0 14.1 73.0 0.4 5.4 4.0 23.9 2...
Page 16 - Setting Fan Speed - PSC; Standard PSC Motor
16 ENVISION RESIDENTIAL INSTALLATION MANUAL Setting Fan Speed - PSC CAUTION: Disconnect all power before performing this operation. Fan Performance Data - PSC PSC FAN MOTOR BODY HIGH LOW MEDIUM F A N S P E E D W IR E Fan Blower Motor Airflow (cfm) at External Static Pressure (in. wg) Model Spd Size ...
Page 17 - Setting Fan Speed - ECM; CAUTION: Disconnect all power before performing this operation.; Fan Performance Data - ECM; Single Speed
17 ENVISION RESIDENTIAL INSTALLATION MANUAL Setting Fan Speed - ECM ECM2 fan motors have a 12-speed selector dip switch on the logic board (SW1) and are factory set for optimum perfor- mance. To change speeds, select the appropriate speeds on dip switch SW1. Consult the ECM2 fan performance table be...
Page 18 - Vertical Dimensional Data; Top Air Discharge
18 ENVISION RESIDENTIAL INSTALLATION MANUAL Vertical Dimensional Data Top Air Discharge LEFT RETURN RIGHT RETURN FRONT TOP 2ft [ 61cm ] Primary Service Access TOP A D E H F K J I G 1.9in [4.8cm] 1.9in [4.8cm] M R Q N O L R N O L P Q RIGHT SIDE B C B LEFT SIDE S T S T C Overall Cabinet Water Connecti...
Page 19 - Horizontal Dimensional Data
19 ENVISION RESIDENTIAL INSTALLATION MANUAL Horizontal Dimensional Data 2ft [ 61cm ] Primary Service Access B C 2.1in [ 5.4cm ] H L O N M S R Q P MOUNT (2) HANGER BRACKETSAS SHOWN TO ALLOW ACCESSTO FILTER AS SHOW N LR UNIT (RR UNIT ON OPPOSITE SIDE—SAME DIMENSIONS) SIDE DISHCARGE VIEW END VIEW TOP V...
Page 20 - Bottomfl ow
20 ENVISION RESIDENTIAL INSTALLATION MANUAL Vertical Dimensional Data 2ft [ 61cm ] Primary Service Access LEFT SIDE RIGHT SIDE B C S T B C S T LEFT RETURN RIGHT RETURN R Q L N O P A FRONT D E F G H I J K 1.90(4.7 cm) 1.70(4.3 cm) 1 2 3 4 5 RIGHT BOTTOM DISCHARGE FLOOR FOOT PRINT R O N L M LEFT BOTTO...
Page 23 - Wiring Schematics
23 ENVISION RESIDENTIAL INSTALLATION MANUAL C HW L HP Therm ostat CO R C Y1 O L1 Y2 NO TE 4 G LP PS FP W Brn (15 ) Or g( 14 ) 1 2 3 P1 0 4 5 Envision - Single Speed Wiring Schematic - 208-230/60/1 97 P774 -06 9/27 /06 PB 2 Auxiliary El ectric H eat Power 208 -230 /60 /1 With optional 'E A' Seri es A...
Page 28 - Microprocessor Control
28 ENVISION RESIDENTIAL INSTALLATION MANUAL Startup The unit will not operate until all the inputs and safety controls are checked for normal conditions. At fi rst power-up, a four-minute delay is employed before the compressor is energized. Component Sequencing Delays Components are sequenced and d...
Page 29 - High Pressure
29 ENVISION RESIDENTIAL INSTALLATION MANUAL Microprocessor Control (cont.) Heat, 3rd Stage (Y1,Y2,W) Dual Capacity Units The hot water pump is de-energized which directs all heat to satisfy the thermostat. The 1st stage of resistance heat is energized 10 seconds after “W” input, and with continuous ...
Page 30 - LED Description; Flash Code Number; Comfort Alert Flash Codes; Compressor Monitoring/Comfort Alert
30 ENVISION RESIDENTIAL INSTALLATION MANUAL Green "POWER" LED - module has powerRed "TRIP" LED - Thermostat "Y" demand signal is present, but the compressor is not running. Yellow "ALERT" LED LED Description Cause Flash Code 1 Long Run Time Eighteen consecutive hours ...
Page 31 - Thermostat Displays; Fault Flash
31 ENVISION RESIDENTIAL INSTALLATION MANUAL The following tables show the codes that will be displayed on the different ComforTalk and FaultFlash thermostats. FaultFlash Thermostats ComforTalk Thermostats Thermostat Display Lockout Code Thermostat Display Lockout Code Lockout Description Lockout Des...
Page 32 - DIP Switch Settings
32 ENVISION RESIDENTIAL INSTALLATION MANUAL DIP Switch Settings Prior to powering unit, ensure that all DIP switches on SW2 & SW3 are set properly according to the tables below. FACTORY SETUP DIP SWITCHES (SW3) DIP SWITCH NUMBER DESCRIPTION OFF POSITION ON POSITION SW 3- 1 Dual Capacity/Single-S...
Page 33 - Check amperage of each element.; Startup Steps; Unit Startup; Before Powering Unit, Check The Following
33 ENVISION RESIDENTIAL INSTALLATION MANUAL High voltage is correct and matches nameplate.Fuses, breakers and wire size correct.Low voltage wiring complete.Piping completed and water system cleaned and fl ushed.Air is purged from closed loop system.Isolation valves are open, water control valves or ...
Page 34 - Operation Logic Data
34 ENVISION RESIDENTIAL INSTALLATION MANUAL Operation Logic Data OPER ATION LOGIC HEATING COOLING FAN ON SL1 - IN ON STG1 STG2 STG3 EMERG STG1 STG2 SINGLE SPEED UNITS Compressor On On On Off On On - - ECM2 Normal Med High High High Med High Low - ECM2 Dehumidif y Med High High High 85% Med 85% High ...
Page 35 - Unit Operating Parameters; Single Speed Models
35 ENVISION RESIDENTIAL INSTALLATION MANUAL Suction Pressure PSIG Discharge Pressure PSIG 022-070 Superheat 022-070 Subcooling Water Temp Rise °F Air Temp Drop °F DB 1.5 133 - 148 205 - 225 17 - 26 10 - 14 18 - 22 18 - 22 3.0 129 - 144 185 - 205 20 - 29 7 - 11 8 - 10 18 - 22 1.5 139 - 154 280 - 300 ...
Page 36 - Dual Capacity Models; SECOND STAGE OPERATION; FIRST STAGE OPERATION
36 ENVISION RESIDENTIAL INSTALLATION MANUAL Suction Pressure PSIG Discharge Pressure PSIG Superheat Subcooling Water Temp Rise °F Air Temp Drop °F DB 1.5 125-140 205-225 12-20 8-14 17-21 17-23 3.0 120-135 190-210 12-20 8-14 8-12 17-23 1.5 135-145 280-290 10-16 8-14 16-20 17-23 3.0 133-143 250-260 10...
Page 37 - Pressure Drop
37 ENVISION RESIDENTIAL INSTALLATION MANUAL Pressure Drop Single Speed Models Dual Capacity Models 30°F 50°F 70°F 90°F 110°F 3.0 0.9 0.9 0.8 0.7 0.7 022 4.5 1.7 1.6 1.5 1.4 1.3 6.0 2.8 2.7 2.5 2.3 2.2 8.0 4.7 4.4 4.1 3.9 3.6 4.0 1.5 1.4 1.3 1.2 1.1 030 6.0 3.0 2.8 2.7 2.5 2.3 8.0 5.1 4.8 4.5 4.2 3.9...
Page 38 - Troubleshooting; Standard Microprocessor Controls; diagnostic; Refrigerant Systems; levels before servicing the refrigerant circuit.; LED Defi nitions and Diagnostics; Standard Microprocessor
38 ENVISION RESIDENTIAL INSTALLATION MANUAL Troubleshooting Standard Microprocessor Controls To check the unit control board for proper operation:1) Disconnect thermostat wires at the control board.2) Jumper the desired test input (Y1, Y2, W, O or G) to the R terminal to simulate a thermostat signal...
Page 39 - Preventive Maintenance; Water Coil Maintenance; Filters; Replacement Procedures; Obtaining Parts; warranty return authorization and assistance.
39 ENVISION RESIDENTIAL INSTALLATION MANUAL Preventive Maintenance Water Coil Maintenance 1. Keep all air out of the water. An open loop system should be checked to ensure that the well head is not allowing air to infi ltrate the water line. Lines should always be airtight. 2. Keep the system under ...
