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RESIDENTIAL
Geothermal/Water Source Heat Pumps
• R-410A Refrigerant
• 2, 2.5, 3, 3.5, 4, 5, 6 Ton Single Speed
• 2, 3, 4, 5, 6 Ton Dual Capacity
Installation Information
Water Piping Connections
Desuperheater Connections
Electrical
Startup Procedures
Troubleshooting
Preventive Maintenance
IM1585 10/07
Envision Residential Installation Manual
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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 Discharge Air Configuration D= Dual Capacity B= Bottom S= Single Speed T= Top S= Side Cabinet Configuration E= End V= Vertical H= Horizontal Coax Options C= Copper Unit Capacity N= Cupronickel Vintage Fan Option A= Current 0= PSC 1= ECM Voltage 2= Oversized ECM Blower Option 1= 208-230/60/1 (036,038,042,048,049) 3= Oversized PSC Bl
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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 Ratings 14 Electrical Data 15 Fan Performance Table 16-17 Setting Fan Speed 16-17 Vertical Dimensional Data 18 Horizontal Dimensional Data 19 Vertical Bottomfl ow Dimensional Data 20 Physical Data 21-22 Wiring Sc
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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. Only trained and qualifi ed service personn
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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 sus- pended 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. Lay out the threaded rods per
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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 connec- tions on metal duct systems. Uninsulated duct should be insulated with a minimum of 1-inch duct insulation. Application of the unit to uninsulated ductwork in an unconditioned space is not recomme
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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 heat exchange capabilities due to a buildup of mineral deposits inside. These can be cleaned, but only by a qualifi ed service mechanic, as special solutions and pumping equipment are required. Desupe
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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.) Condensate Drain On vertical units, the internal condensate drain assembly consists of a drain t
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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 fi gure below), fi nal purging and charging of the loop is required. A fl ush cart (or a 1.5 HP pump minimum) is needed to achieve adequate fl ow velocity in the loop to purge air and dirt particles from the loop itself. Antifreeze solut
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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. Insure proper water fl ow through the unit by checking pressure drop across the heat exchanger and comparing it to the fi gures in unit capacity dat
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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. 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 an
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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 NPT x 3-1/2-inch brass nipple into the water heater drain port. 4. Attach the center port of the 3/4-inch FPT tee to the opposite end of the brass nipple. 5. Attach the 1/2-inch copper to 3/4-inch
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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. Consult the Unit Electrical Data in the Specifi cation Catal
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Microprocessor Controller 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 Figure 15: Thermostat Wiring Position the thermostat subbase against the wall so that it is level and the thermostat wires protrude through the middle of the subbase. Mark the position 24VAC (Hot) R of the subbase mounting holes and drill holes with a 3/16-inch
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ENVISION RESIDENTIAL INSTALLATION MANUAL Unit Electrical Data Single speed with ECM motor HWG Ext Fan Total Min Max Compressor Rated Voltage Model Pump Loop Motor Unit Circ Fuse/ Voltage MIN/MAX 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 40 042 26.0 16.6 79.0 0.4 5.4 4.0 26.4 30.6 45 208-230/60/1 197/253 042* 26.0 16.6 79.0 0.4
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ENVISION RESIDENTIAL INSTALLATION MANUAL Fan Performance Data - PSC Standard PSC Motor Fan Blower Motor Airflow (cfm) at External Static Pressure (in. wg) Model Spd Size HP 0 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.60 0.70 0.80 0.90 1.00 H 1110 1095 1080 1065 1045 1020 995 970 945 915 880 810 ---- 022 M 9 x 7 1/5 850 845 835 825 815 805 795 775 755 735 715 ----- L 750 745 740 735 725 715 700 685 670 650 630 ----- H 1290 1270 1245 1220 1190 1160 1125 1090 1055 1020 985 880 760 - - - M
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ENVISION RESIDENTIAL INSTALLATION MANUAL Fan Performance Data - ECM ECM2 Single Speed MAX AIR FLOW DIP SWITCH SETTINGS MODEL ESP 1 2 3456789 10 11 12 800 900 1000 1100 1200 400 500 600 700 022 0.50 L M H 400 500 600 700 800 900 1000 1100 1200 030 0.50 H L M 650 750 850 1000 1100 1200 1300 1400 1500 036 0.50 L MH 800 1000 1100 1300 1500 1600 036 1800 0.75 w/1hp* L MH 650 800 900 1050 1150 1250 1350 1450 1550 042 0.50 MH L 042 800 900 1000 1200 1400 1600 1700 1850 2000 2200 2300 2400 0.75 w/1hp*
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ENVISION RESIDENTIAL INSTALLATION MANUAL Vertical Dimensional Data Top Air Discharge LEFT RETURN RIGHT RETURN P O Q Q O M L L R N N R 1.9in TOP TOP [4.8cm] T T 1.9in [4.8cm] S S KJ I DE HF G A C C FRONT 2ft [61cm] Primary Service Access B B RIGHT SIDE LEFT SIDE Water Connections Electrical Knockouts Overall Cabinet Discharge Connection Return Connection IJ K duct flange installed (±0.10 in) using std deluxe filter rack (±0.10 in) Vertical Models AB CD E F G H Loop 1/2" cond 1/2" cond 3/4" cond
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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 SIDE DISHCARGE VIEW FRONT VIEW END VIEW A B L L S O S N O 1.9in [4.8cm] M C R DE F G KJ I H AS SHOWN LR UNIT (RR UNIT ON OPPOSITE SIDE—SAME DIMENSIONS) Water Connections Electrical Knockouts Overall Cabinet Discharge Connection Return Connection IJ K duct flange installed (±0.10 in) using std deluxe filter
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ENVISION RESIDENTIAL INSTALLATION MANUAL Vertical Dimensional Data Bottomfl ow RIGHT RETURN LEFT RETURN 1.70 (4.3 cm) 4 3 C C 2 1 S S G F K J I E T T D B B LEFT SIDE RIGHT SIDE 1.90 (4.7 cm) 5 R Q RQ A H L FRONT 2ft [61cm] N L O Primary Service Access O P M N LEFT BOTTOM DISCHARGE RIGHT BOTTOM DISCHARGE FLOOR FOOT PRINT FLOOR FOOT PRINT Overall Cabinet Water Connections Electrical Knockouts Discharge Connection Return Connection duct flange installed (±0.10 in) using std delux e filter rack (±
