Envision Residential Installation Manual RESIDENTIAL Geothermal/Water Source Heat Pumps • R-410A Refrigerant • 2, 2.5, 3, 3.
ENVISION RESIDENTIAL INSTALLATION MANUAL Model Nomenclature N D V 049 A 1 1 1 Model Type N= Envision C T L Return Air Configuration L= Left R= Right Compressor Type D= Dual Capacity S= Single Speed Discharge Air Configuration B= Bottom T= Top S= Side E= End Cabinet Configuration V= Vertical H= Horizontal Coax Options C= Copper N= Cupronickel Unit Capacity Vintage A= Current Fan Option 0= PSC 1= ECM 2= Oversized ECM Blower Option (036,038,042,048,049) 3= Oversized PSC Blower Option (022,030
ENVISION RESIDENTIAL INSTALLATION MANUAL Table of Contents General Installation Information Closed Loop Ground Source Systems Open Loop Ground Water Systems 4-8 9 10 Desuperheater Connection & Startup 11-12 Electrical Connections 13-14 Electronic Thermostat Installation 14 Auxiliary Heat Ratings 14 Electrical Data 15 Fan Performance Table 16-17 Setting Fan Speed 16-17 Vertical Dimensional Data 18 Horizontal Dimensional Data 19 Vertical Bottomflow Dimensional Data 20 Physical Data 21-
ENVISION RESIDENTIAL INSTALLATION MANUAL General Installation Information Safety Considerations WARNING: Before performing service or maintenance operations on a system, turn off main power switches to the indoor unit. If applicable, turn off the accessory heater power switch. Electrical shock could cause personal injury. Installing and servicing heating and air conditioning equipment can be hazardous due to system pressure and electrical components.
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 normally suspended from a ceiling by six 3/8-inch diameter threaded rods. The rods are usually attached to the unit by hanger bracket kits furnished with each unit.
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 bottomflow units have no collar). A flexible connector is recommended for discharge and return air duct connections on metal duct systems. Uninsulated duct should be insulated with a minimum of 1-inch duct insulation.
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 present, a closed loop system is recommended. The heat exchanger coils in ground water systems may, over a period of time, lose heat exchange capabilities due to a buildup of mineral deposits inside. These can be cleaned, but only by a qualified service mechanic, as special solutions and pumping equipment are required.
ENVISION RESIDENTIAL INSTALLATION MANUAL Freeze Protection Set the freeze sensing switch SW2-2 on the printed circuit board for applications using a closed loop antifreeze solution to “LOOP”. On applications using an open loop/ground water system (or closed loop no antifreeze), set this dip switch to “WELL”, the factory default setting. (Refer to the Dip Switch Field Selection table on page 24.
ENVISION RESIDENTIAL INSTALLATION MANUAL 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 ground loop (see figure below), final purging and charging of the loop is required. A flush cart (or a 1.5 HP pump minimum) is needed to achieve adequate flow velocity in the loop to purge air and dirt particles from the loop itself.
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 tank to minimize mineral formation due to air exposure.
ENVISION RESIDENTIAL INSTALLATION MANUAL Desuperheater Connections To maximize the benefits 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. Electric water heaters are recommended. Make sure all local electrical and plumbing codes are met for installing a desuperheater. Residential units with desuperheaters contain an internal circulator and fittings.
ENVISION RESIDENTIAL INSTALLATION MANUAL Plumbing Installation 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 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. Remove drain valve and fitting. Thread the 3/4-inch NPT x 3-1/2-inch brass nipple into the water heater drain port. Attach the center port of the 3/4-inch FPT tee to the opposite end of the brass nipple.
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. Unit Power Connection Connect the incoming line voltage wires to L1 and L2 of the contactor as shown in Figure 13C for single-phase unit.
ENVISION RESIDENTIAL INSTALLATION MANUAL Electrical Connections (cont.) Pump Wiring Figure 14: Pump Wiring 208-230/60/1 See Figure 14 for electrical connections from control box to pumps. Electronic Thermostat R C Y1 Y2 W O G L 24VAC (Hot) 24VAC (Common) Compressor (1st Stage) Compressor (2nd Stage) Aux.
ENVISION RESIDENTIAL INSTALLATION MANUAL Unit Electrical Data Single speed with ECM motor Model Rated Voltage Compressor Voltage MIN/MAX HWG Ext Fan Total Min Max Pump Loop Motor Unit Circ Fuse/ MCC RLA LRA FLA FLA FLA FLA Amp HACR 022 14.0 9.0 48.0 0.4 5.4 4.0 18.8 21.0 30 030 20.0 12.8 58.3 0.4 5.4 4.0 22.6 25.8 35 036 22.0 14.1 73.0 0.4 5.4 4.0 23.9 27.4 40 036* 22.0 14.1 73.0 0.4 5.4 7.0 26.9 30.4 40 26.0 16.6 79.0 0.4 5.4 4.0 26.
ENVISION RESIDENTIAL INSTALLATION MANUAL Fan Performance Data - PSC Standard PSC Motor Model 022 030 036 042 048 060 070 Fan Spd H M L H M L H M L H M L H M L H M L H M L Blower Size Motor HP 9x7 1/5 9x7 1/3 9x7 1/2 10 x 10 1/2 10 x 10 1/2 11 x 10 1 11 x 10 1 0 1110 850 750 1290 1100 910 1665 1465 1130 2010 1670 1220 2010 1670 1220 2430 2265 2075 2430 2265 2075 0.05 1095 845 745 1270 1090 905 1640 1445 1115 1975 1650 1215 1975 1650 1215 2400 2235 2050 2400 2235 2050 0.
ENVISION RESIDENTIAL INSTALLATION MANUAL Fan Performance Data - ECM ECM2 Single Speed MODEL MAX ESP 022 0.50 030 0.50 036 0.50 036 w/1hp* 0.75 042 0.50 042 w/1hp* 0.75 048 0.50 048 w/1hp* 0.75 060 0.75 070 0.
ENVISION RESIDENTIAL INSTALLATION MANUAL Vertical Dimensional Data Top Air Discharge LEFT RETURN RIGHT RETURN P Q M O L Q L N R O R N TOP 1.9in [4.8cm] TOP T T 1.9in [4.
ENVISION RESIDENTIAL INSTALLATION MANUAL Horizontal Dimensional Data TOP VIEW P Q 2.1in [5.4cm] MOUNT (2) HANGER BRACKETS AS SHOWN TO ALLOW ACCESS TO FILTER 2ft [61cm] Primary Service Access FRONT VIEW SIDE DISHCARGE VIEW A B S END VIEW O N L L S O 1.9in [4.
ENVISION RESIDENTIAL INSTALLATION MANUAL Vertical Dimensional Data Bottomflow RIGHT RETURN LEFT RETURN 1.70 (4.3 cm) 4 C 3 C 2 1 S S K T J F I E T D B B LEFT SIDE RIGHT SIDE R 1.90 (4.7 cm) R Q 5 Q A L 2ft [61cm] Primary Service Access N L O O Ov erall Cabinet 036-072 RIGHT BOTTOM DISCHARGE FLOOR FOOT PRINT Water Connecti ons 1 P N LEFT BOTTOM DISCHARGE FLOOR FOOT PRINT 022-030 H FRONT M Bottomflow Models G 2 A B C D E Width Depth Height In Out in. cm.
ENVISION RESIDENTIAL INSTALLATION MANUAL Physical Data (Single Speed) SINGLE SPEED Model 022 030 036 042 Compressor (1 each) 048 060 070 Copeland Scroll Factory Charge R410a, oz [kg] Vertical 62 [1.76] 62 [1.76] 82 [2.32] 82 [2.32] 98 [2.78] 110 [3.12] 146 [4.14] Factory Charge R410a, oz [kg] Horizontal 60 [1.70] 66 [1.87] 82 [2.32] 82 [2.32] 98 [2.78] 94 [2.67] 122 [3.
ENVISION RESIDENTIAL INSTALLATION MANUAL Physical Data (Dual Capacity) Model 026 DUAL CAPACITY 049 038 Compressor (1 each) 064 072 Copeland 2-speed Scroll, UltraTech Factory Charge R410a, oz [kg] Vertical 62 [1.76] 78 [2.21] 89 [2.52] 122 [3.46] 140 [3.97] Factory Charge R410a, oz [kg] Horizontal 60 [1.70] 76 [2.16] 89 [2.52] 124 [3.52] 160 [4.54] ECM Fan Motor & Blower Fan Motor Type/Speeds ECM Variable Speed Fan Motor- hp [W] 1/2 [373] Blower Wheel Size (Dia x W), in.
4 5 6 7 8 Y2 W O G LO NOTE 10 Optional Electronic Air-Filter Optional Remote Unit Without Loop Pump SL1 Out SL1 In C NOTE 2 NOTE 9 L1 G O W Y2 SW4 3 Blu Pink NOTE 6 DHW Pump 1 3 7 Y R R R R R R G 3 Acc NO 2 2 Acc NC 1 1 Acc Com P3 NOTE 3 6 Not 5 Used 4 SL1 In SL1 Out LED *Green LED not flashing Drain Water Flow High Press Low Press / Comp Air Flow Status DHW Limit DHW off Field Selection Dips - #1 On, #6 On, #7 On Drain pan overflow Lockout FP thermistor
ENVISION RESIDENTIAL INSTALLATION MANUAL Wiring Schematics Envision - Single Speed Wiring Schematic - 208-230/60/1 - ECM S C R Blue Ext Pump 1/2 hp Total 208-230/60/1 PB1 Unit Power 208-230/60/1 2 2 Pump Pump Black CC Tan (16) Run Capacitor 1 1 G Red Comfort Alert NOTE 4 G L2 L1 Blk/Wht(11) Blu DHW Pump 3A Fuse Yel(8) Pink Brn 2 Gry/Wht(10) Org 1 NOTE 1 Gry(9) 3 PS NOTE 6 Org(14) Blk Brn(15) Grn Pink(13) Blu(17) Fused L2 240V L2 Fused L2 240V L2 Red Blu 208V 240V
ENVISION RESIDENTIAL INSTALLATION MANUAL With optional ' EA' Series Auxiliary ElectricHeat Typical schematic shown Auxiliary Electric Heat Power 208-230/60/1 L2 G NOTE 5 L4 L2 P9 L1 L1 L3 G F2 1 2 Grn 3 Brn 5 Brn 4 Or P8 Blu Org Violet PB2 Pink Blk Yel Grn 4 Yel 3 Blk 2 Blk Gray 1 Gray 2 3 4 5 Yel ER1 Gray NO 1 Pink Pink Gray P11 Gray ER2 P7 ECM2 Fan Motor NO PWM 15 16 10 RPM grnd C2 3 RPM On/Off ER3 Blk Gray HE1 1 Yel 2 3 Yel HE2 TS2 Yel 4 H
ENVISION RESIDENTIAL INSTALLATION MANUAL Wiring Schematics Envision - Dual Capacity Wiring Schematic - 208-230/60/1- ECM S C R Blue Ext Pump 1/2 hp Total 208-230/60/1 Black DC SOL PB1 Unit Power 208-230/60/1 2 2 Pump Red Pump CC Tan (16) Run Capacitor 1 1 G CS + - Comfort Alert NOTE 4 G L2 L1 Blk/Wht(11) Blu DHW Pump 3A Fuse Yel(8) Pink Brn 2 Gry/Wht(10) Org 1 NOTE 1 Gry(9) 3 Blk PS NOTE 6 Org(14) Brn(15) Grn Pink(13) Blu(17) Fused L2 240V L2 Fused L2 240V L2 Red
ENVISION RESIDENTIAL INSTALLATION MANUAL With optional ' EA' Series Auxiliary ElectricHeat Typical schematic shown Auxiliary Electric Heat Power 208-230/60/1 L2 G NOTE 5 L4 L2 P9 L1 L1 L3 G F2 1 2 Grn 3 Brn 5 Brn 4 Or P8 Blu Org Violet PB2 Pink Blk Yel Grn Pink 4 Pink Yel 3 Yel Blk 2 Blk Gray 1 Gray ER1 Gray NO 1 2 3 4 5 Gray P11 Gray ER2 P7 ECM2 Fan Motor NO PWM 15 16 10 RPM grnd C2 3 RPM On/Off ER3 Blk Gray HE1 1 Yel Blk 3 Yel HE2 TS2 Yel
ENVISION RESIDENTIAL INSTALLATION MANUAL Microprocessor Control Startup Resistance Heat Control (208-230 Units) The unit will not operate until all the inputs and safety controls are checked for normal conditions. At first power-up, a four-minute delay is employed before the compressor is energized. The electric heat control module contains the appropriate high-voltage control relays.
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 3rd stage demand, the additional stages of resistance heat engage sequentially every 5 minutes.
ENVISION RESIDENTIAL INSTALLATION MANUAL Microprocessor Control (cont.) Compressor Monitoring/Comfort Alert The comfort Alert displays abnormal compressor conditions through a unique flash code and communicates the conditions to the heat pump microprocessor control. The heat pump microprocessor will determine which fault to act on and ignore. Fault codes 2 (system pressure), 4 (locked rotor), 6 (open start circuit), and 7 (open run circuit) will result in a lockout. All other fault codes are passive.
ENVISION RESIDENTIAL INSTALLATION MANUAL Microprocessor Control (cont.) Thermostat Displays Fault Flash When using a TA32W01 or TP32W02 thermostat and SW2-8 is in the pulsing “L” position, FaultFlash will enable a user to view the thermostat and count the fault indicator flashes to determine the lockout condition the unit is experiencing.
ENVISION RESIDENTIAL INSTALLATION MANUAL Microprocessor Control (cont.) 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) SW 3- 1 DESCRIPTION OFF POSITION Dual Capacity/Single-Speed Configures the control for single-speed compressor operation or dual capacity operation.
ENVISION RESIDENTIAL INSTALLATION MANUAL Unit Startup Before Powering Unit, Check The Following: Note: Remove and discard the two compressor hold down shipping bolts located at the front and rear of the compressor mounting bracket. The bolts can then be discarded. • • • • • • • • • • • • • • • • • High voltage is correct and matches nameplate. Fuses, breakers and wire size correct. Low voltage wiring complete. Piping completed and water system cleaned and flushed. Air is purged from closed loop system.
ENVISION RESIDENTIAL INSTALLATION MANUAL Operation Logic Data OPERATION LOGIC HEATING COOLING FAN ON SL1 - IN ON - - STG1 STG2 STG3 EMERG STG1 STG2 Compressor On On On Off On On ECM2 Normal Med High High High Med High Low - ECM2 Dehumidify Med High High High 85% Med 85% High Low - PSC On On On On On On On - Rev Valve Off Off Off Off On On - - Loop Pump On On On Off On On - On DHW Pump On Off Off Off On On - - Aux Heater Off Off St
ENVISION RESIDENTIAL INSTALLATION MANUAL Unit Operating Parameters Single Speed Models Cooling -- No Desuperheater Entering Water Temp °F 50 70 90 Water Flow GPM/Ton 1.5 Suction Pressure PSIG 133 - 148 Discharge Pressure PSIG 205 - 225 3.0 129 - 144 185 - 205 1.5 139 - 154 3.0 1.5 3.
ENVISION RESIDENTIAL INSTALLATION MANUAL Unit Operating Parameters Dual Capacity Models FIRST STAGE OPERATION Cooling -- No Desuperheater Entering Water Temp °F 50 70 90 Water Flow GPM/Ton 1.5 3.0 1.5 3.0 1.5 3.
ENVISION RESIDENTIAL INSTALLATION MANUAL Pressure Drop Single Speed Models Dual Capacity Models Pressure Drop (psi) Model GPM 30°F 50°F 70°F 90°F 110°F 022 3.0 4.5 6.0 8.0 0.9 1.7 2.8 4.7 0.9 1.6 2.7 4.4 0.8 1.5 2.5 4.1 0.7 1.4 2.3 3.9 0.7 1.3 2.2 3.6 030 4.0 6.0 8.0 10.0 1.5 3.0 5.1 7.7 1.4 2.8 4.8 7.2 1.3 2.7 4.5 6.8 1.2 2.5 4.2 6.3 036 5.0 7.0 9.0 12.0 1.0 2.1 3.6 6.3 1.0 1.9 3.3 5.9 0.9 1.8 3.0 5.5 042 5.0 8.0 11.0 14.0 0.8 2.1 4.2 7.6 0.7 2.1 4.1 6.7 048 6.0 9.0 12.
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. 3) If control functions properly: • Check for thermostat and field control wiring (use the diagnostic inputs mode).
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 infiltrate the water line. Lines should always be airtight. 2. Keep the system under pressure at all times. It is recommended in open loop systems that the water control valve be placed in the discharge line to prevent loss of pressure during off cycles.
Manufactured by WFI 9000 Conservation Way Fort Wayne, IN 46809 WaterFurnace has a policy of continuous product research and development and reserves the right to change design and specifications without notice. ©2007 WFI.
