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ECR International Inc
2201 Dwyer Ave.
Utica, NY 13501
www.enviromaster.com
An ISO 9001-2008 Certified Company
CACG/CAHG/CAHJ
CACH/CAHH/CAHK
High-Effi ciency Cassette Ductless Split System Air Handlers
Straight cool / Heat pump nominal capacities
CAHJ09
CAHJ12
CAHK09
CAHK12
9,000
12,000
2.6
3.5
Straight cooling only
CACG36 & CACH36
30,000
8.8
Installation, Operation and
Maintenance Manual
CAHK12
&
CAHG24
Units
CAHH24
18,000
24,000
5.3
7.0
Units
36,000
10.5
P/N 240008108, Rev. G [07/08/10]
Btuh
kW
Btuh
kW
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Summary of Contents for ECR International CACG
- Page 1 18,000 24,000 Btuh Straight cooling only CACG36 & CACH36 Units 30,000 36,000 Btuh 10.5 Installation, Operation and Maintenance Manual ECR International Inc 2201 Dwyer Ave. Utica, NY 13501 CAHK12 www.enviromaster.com An ISO 9001-2008 Certified Company P/N 240008108, Rev. G [07/08/10]...
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Page 2: Table Of Contents
Final Assembly (continued) ... . .20 Troubleshooting — CACG/CAHG/CAHJ Units . .52 Electrical Wiring.....21 Troubleshooting —... -
Page 3: Read Before Proceeding
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Read Before Proceeding Recognize this symbol as an indication of important safety information. WARNING Safety Instructions Completely read all instructions prior to assembling, installing, oper- Th is manual is intended as an aid to quali- ating, or repairing this product. -
Page 4: Verify Unit Before Installing
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Verify Unit Before Installing NOTICE Standard features Check equipment for damage prior CACG/CAHG/CAHJ units to installation, if damaged contact the • “G” or “J” units require a remote thermo- wholesale distributor. - Page 5 CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Verify Unit Before Installing (continued) • Fresh air intake capability on three sides of System options cabinet (only two on models 9–12). • 24V wall thermostat. • Four plastic air vanes, motor driven with •...
- Page 6 Air vanes • Air outlet vanes are manually adjustable • CACG/CAHG/CAHJ units require a on the models 9 and 12 or driven by an wall thermostat for operation. CACH/ electric motor on the models 24 and 36. CAHH/CAHK units can be operated by •...
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Page 7: Piston/Orifi Ce Replacement (When Required)
Handler Model Condenser Factory-installed orifi ce size Replacement orifi ce size (Inches) (Inches) T2C/T2H8800 CAHG/CAHH 24 T2C/T2H9800 0.056 0.049 T3C/T3H9980 CACG/CACH 36 S1CG3000 0.070 0.063 S1CG8000 CACG/CAHH 24 0.056 0.047 S1HG8000 T2C/T2H 2400 T3C/T3H 2240 T3C/T3H 2220 CAHJ/CAHK 12 0.041 0.044... -
Page 8: Mounting The Unit
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Mounting the Unit Before installing, consider: Unpacking • Determine the best location for mounting Th e Cassett e fascia and main chassis are pack- the unit for room air circulation. - Page 9 CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Mounting the Unit (continued) Blanking off Model 24 — two hinged grilles Figure 3 and two fi lters (Model 36, not Th e fascia discharge slot(s) will need blank- shown has three grilles and ing off when ducts are used to channel the three fi...
- Page 10 Th e unit should not be positioned directly EMI or your local distributor. The wall above any obstructions. thermostat is required for CACG/CAHG/ Th e condensate drain should have suf- CAHJ units, optional for CACH/CAHH/ fi cient fall — 1” per 10’ (8 mm/m) in CAHK units.
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Page 11: Mounting Method
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Mounting the Unit (continued) Mounting method Ceiling cutout/rod placement Figure 6 • In existing construction, remove enough template (shipped with unit) ceiling panels to provide clearance space for mounting unit to ceiling joists. 1.500 TYP •... - Page 12 CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Mounting the Unit (continued) Mounting Positioning installation guides Figure 8 Use the template (see Figure 6, Page 11 ) to cut the ceiling opening and determin- ing the rod positions.
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Page 13: Condensate Piping
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Condensate Piping Th e unit can now be piped up in accordance The highest point of the con- Figure 10 with good refrigeration and/or plumbing densate piping should be as practices. -
Page 14: Duct Connections
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Duct Connections Branch duct and fresh air duct collars can be Figure 12 Knockouts att ached to the cassett e chassis by following Branch Duct Knockout the steps below. -
Page 15: Refrigerant Piping
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Refrigerant Piping Piping connections at unit Figure 14 CAUTION • Avoid piping on wet and rainy days. • Use only clean, refrigeration-grade copper tubing. • Use tubing benders to guard against kinking. - Page 16 CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Refrigerant Piping (continued) Refrigerant piping Clean ends of tubing Figure 15 Clean the ends of tubing and insert into fi tt ings ( Figure 15 ). Before brazing (...
- Page 17 CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Refrigerant Piping (continued) Refrigerant processing Manifold set connections at unit Figure 17 Att ach manifold set ( Figure 17 ). Evacuate line to 500 microns or less to ensure all moisture has been removed and there are no leaks.
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Page 18: Refrigerant Processing
System Total = Factory Charge + Line Adjustment Round to the nearest ounce and allow for gauges and hoses. Table 4 S1CG/S1HG and top discharge R410A refrigerant charge table CAC_ refers to CACG/CACH; CAH_ refers to CAHG/CAHH/CAHJ/CAHK Cassette Line charge Factory... -
Page 19: Final Assembly
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Final Assembly Assembly instructions Mounting bolts Figure 20 To install the four fascia mounting bolts: Remove the bolts and washers from the supplied kit bag. Put washers onto the bolts. Screw the mounting bolt with washer into the chassis leaving approximately 1”... -
Page 20: Final Assembly (Continued)
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Final Assembly (continued) Connect vane motor plug into Figure 23 Figure 25 Secure fascia to chassis socket on chassis CAUTION Female vane motor plug on chassis DO NOT over-tight- en the bolts —... -
Page 21: Electrical Wiring
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Electrical Wiring Removing control box cover NOTICE Figure 27 All electrical wiring must be run accord- ing to NEC and local codes. General requirements WARNING Electrical shock hazard —... - Page 22 CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Electrical Wiring (continued) It is also recommended that a local discon- Wiring diagram location Figure 29 nect switch be connected within 3 feet of the unit. In some areas this may be a code...
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Page 23: Wall Thermostat Selection (Optional For Cacg/Cahg/ Cahj)
Wall Thermostat Selection (optional for CACH/CAHH/CAHK) Field-supplied thermostats NOTICE When selecting a thermostat other than one CACG/CAHG/CAHJ units off ered by EMI, it is important to choose a • All are operated by a wall thermo- 24V thermostat that matches your applica- stat. -
Page 24: Notice
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Wall Thermostat Operation (optional for CACH/CAHH/CAHK) (continued) FAN operation COOLING operation Th e wall thermostat will control the call for Th e wall thermostat will control the call for... -
Page 25: Notice
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Wall Thermostat Operation (optional for CACH/CAHH/CAHK) (continued) Electric heat operation Optional HEAT PUMP WITH (Two-stage heating) ELECTRIC HEAT For wall thermostat operation with electric heat the control must be confi gured properly For wall thermostat operation for two-stage (Remote Th ermostat ON) [Table 6, pg. -
Page 26: Notice
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Initial Start-Up — CACG/CAHG/CAHJ Units ONLY NOTICE CAHG/CACG louver toggle Figure 30 switch CACG/CAHH/CAHK units • Th ese units require sett ing of DIP switches and controller functions before proceeding with start-up. -
Page 27: Notice
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Initial Start-Up — CACG/CAHG/CAHJ Units ONLY (continued) Checking condensate pump Figure 31 WARNING operation — Turn off Electrical shock hazard power to indoor and outdoor units is off before proceeding. -
Page 28: Notice
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Initial Start-Up — CACH/CAHH/CAHK Units ONLY Set DIP switches NOTICE DO NOT turn on power until the DIP To test cooling operation switches have been set and the control Operation of the unit depends on the panel cover replaced. - Page 29 CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • SEND button for 2 seconds. This will Be sure to return DIP switch #1 (Test transmit information from the remote mode) to NO before leaving the system. to the cassett e. Th e cassett e will respond with a beep, indicating it has received Verify cooling-only operation the information.
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Page 30: Electric Heat
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Verify heat pump operation (no Verify operation. electric heat) Check condensate pump This arrangement uses a heat pump operation outdoor unit with no heat source in the cassett e (indoor) unit. -
Page 31: Cach/Cahh/Cahk Microprocessor Controller Overview
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACG/CAHH/CAHK Microprocessor Controller Overview Figure 33 EMI unit-mounted microprocessor controller — control panel WARNING Electrical shock hazard — Before removing the control box cover, make sure that all power is re-... - Page 32 CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACH/CAHH/CAHK Microprocessor Controller Overview (continued) Table 6 CACG/CAHH/CAHK Microprocessor controller — dip switch settings Factory DIP Switch Setting Operation Setting mode. All timers are shortened, Enables Test allowing quicker operational testing.
- Page 33 CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACH/CAHH/CAHK Microprocessor Controller Overview (continued) Figure 34 Unit-mounted controller — chassis-mounted keypad/display Infrared receiver window Power LED — In Wall Th ermostat mode — on when power is applied to the unit. In Infrared Controller mode —...
- Page 34 CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACH/CAHH/CAHK Microprocessor Controller Overview (continued) Figure 35 CACH/CAHH/CAHK Microprocessor Controller — infrared remote control POWER Press to turn unit on or off . Press and hold for SEND 2 seconds to transmit all sett ings to the unit- mounted controller.
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Page 35: Setting The Cach/Cahh/Cahk Controller
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Setting the CACH/CAHH/CAHK Controller Confi guration settings for CACH/CAHH/CAHK Figure 36 Possible Value Factory Setting Item Display Overview (fl ashing) Settings To access: Press MODE and PROGRAM together for 5 seconds, repeat to exit Navigating through settings: Press PROGRAM to move to the next setting or CLOCK to move to the previous setting;... - Page 36 CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Setting the CACH/CAHH/CAHK Controller (continued) 7-day programming options for CACH/CAHH/CAHK Figure 37 Item Setting Values Overview To access: Press and hold PROGRAM and CLOCK buttons simultaneously for 3 seconds; use arrow keys to select position;...
- Page 37 CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Setting the CACH/CAHH/CAHK Controller (continued) Programming schedule (when using 7-day programming) Table 7 To copy the settings from any day to the entire week: 1) Select the day to be copied. 2) Simultaneously press the “FAN”...
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Page 38: Cach/Cahh/Cahk Microprocessor Controller Operation
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACH/CAHH/CAHK Microprocessor Controller Operation • Alternatively, hold the POWER/SEND NOTICE butt on for two seconds. All of the optional When power is fi rst applied to the con- remote’s sett ings will be transmitt ed to the... -
Page 39: Notice
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACH/CAHH/CAHK Microprocessor Controller Operation (continued) POWER/SEND are constant fan sett ings. Th e High fan operates continuously, regardless of set- Pressing the POWER/SEND butt on momen- point or room temperatures. tarily will switch the unit either on or off . -
Page 40: Heating Mode
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACH/CAHH/CAHK Microprocessor Controller Operation (continued) Cooling mode Heating mode For cooling operation, fi rst turn the unit on Optional Electric heat operation (Air via the POWER/SEND butt on. -
Page 41: Notice
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACH/CAHH/CAHK Microprocessor Controller Operation (continued) Optional Heat pump without Electric Optional Heat pump with Electric heat heat (Heat Pump unit outdoors) (2-stage heating) For heat pump operation with electric heat NOTICE the control must fi rst be confi gured properly EMI heat pumps are intended to operate... -
Page 42: Dry Mode
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACH/CAHH/CAHK Microprocessor Controller Operation (continued) At that time the electric heat will switch If the room temperature is within ± two off and the heat pump (compressor) will degrees of setpoint, the unit will cycle take over the heating demand. -
Page 43: Notice
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACH/CAHH/CAHK Microprocessor Controller Operation (continued) Configuration mode, the unit will run the control will save the new sett ings and heating operation as described under return to the previous interface mode. Heat mode. - Page 44 CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACH/CAHH/CAHK Microprocessor Controller Operation (continued) control through the 7-Day Programming Clean Filter Alarm mode. To aid in fi lter maintenance, the cassett e con- Th e Pre-Program Run mode can be en-...
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Page 45: Cach/Cahh/Cahk Wall Thermostat Operation
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACH/CAHH/CAHK Wall Thermostat Operation Set DIP switch #4 to ON Cooling operation For Wall Th ermostat Operation the control Th e wall thermostat will control the call for must be confi gured through the DIP switches cooling operation (on or off ) through the located on the control board located in the... -
Page 46: Notice
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACH/CAHH/CAHK Wall Thermostat Operation (continued) Electric heat operation to call for second stage heating. (See the thermostat owner’s manual for this Th e wall thermostat will control the call for feature). -
Page 47: Cach/Cahh/Cahk Controller Features
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACH/CAHH/CAHK Controller Features Short Cycle Protection (ASCT) • If Intermitt ent is selected, the backlight will remain for 10 seconds after the Th e electronic control incorporates an anti- push of any butt on while the control is short-cycle timer (ASCT) feature designed in the On mode or aft er the push of the... -
Page 48: Cach/Cahh/Cahk Controller Fault Conditions
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • CACH/CAHH/CAHK Controller Fault Conditions CACH/CAHH/CAHK microprocessor controller fault indications Table 8 Timer/Alarm Fault condi- LED — number Description tion of fl ashes: Room air sen- If the room air sensor is disconnected, damaged or mal-... -
Page 49: Maintenance
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Maintenance Remove the grille Figure 38 WARNING Service should be performed by a quali- Model 12 Model 12 fi ed service agency and an annual system check is recommended. shown shown Electrical shock hazard... -
Page 50: Troubleshooting - General
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Troubleshooting — General delay fuse or HACR breakers. (See the WARNING unit name plate for the correct breaker type and size). Service should be performed by a quali- •... - Page 51 CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Troubleshooting — General (continued) Models CACG/CAHG/CAHJ — Low-voltage interconnections — wall thermostat Figure 42 operation Models CACH/CAHH/CAHK — Low-voltage interconnections — with/without Figure 43 optional wall thermostat operation...
- Page 52 CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Troubleshooting — CACH/CAHG/CAHJ Units Cooling-only units Heat pump units Cooling only units require 18 AWG low- Heat pump units require 18 AWG low-voltage voltage interconnecting wires between the interconnecting wire between the indoor and indoor and outdoor units.
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Page 53: Troubleshooting - Cacg/Cahg/Cahj Units
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Troubleshooting — CACG/CAHG/CAHJ Units (continued) Th e indoor unit contains an electronic anti- As a safety feature, an auto-reset limit switch short-cycle timer feature (ASCT) that will is located on the heater assembly. - Page 54 CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Troubleshooting — CACG/CAHG/CAHJ Units (continued) Two-stage heating Next, place the setpoint further above room temperature to activate second stage heat- Two-stage heating combines heat pump and ing. electric heat operation. Heat pump units...
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Page 55: Troubleshooting - Cach/Cahh/Cahk Units
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Troubleshooting — CACH/CAHH/CAHK Units power can be measured between the relay NOTICE output and the L2 terminal of the incoming Cassette operation can be controlled power supply. through either a wall thermostat or an For optional wall thermostat operation, 24 Vac optional infrared handheld controller. -
Page 56: Frequently Asked Questions
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Frequently Asked Questions Q: Th e condenser will not start although the fan to run continuously regardless of the set point temperature. the indoor unit appears normal. What... - Page 57 CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Frequently Asked Questions (continued) A: EMI air handlers are manufactured with a low-voltage transformer installed. When connecting an EMI air handler to a non- EMI condenser, check to ensure that there is no 24v control transformer in the outdoor unit.
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Page 58: Dimensions
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Dimensions Dimensions — Models 9, 12, 24 and 36 (see dimensions, Table 9, Page 59 ) Figure 44 Features Optional discharge knockouts 5¼-inch diameter (3) available Fresh air inlet knockouts 1¼... - Page 59 CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Dimensions (continued) Dimensions — Models 9, 12, 24 and 36 (see drawing, Figure 44, Page 58 ) Table 9 Models 9 & 12 Model 24 Model 36 Dimension Inches Inches Inches...
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Page 60: Specifi Cations
CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Specifi cations Electrical Specifi cations ( Table 10 CAC_ refers to CACG/CACH; CAH_ refers to CAHG/CAHH/CAHJ/CAHK Fan Motor Elect Heat Total HACR Model M.C.A. AMPS Volt BRKR Volts/HZ/PH H.P. -
Page 61: System Options
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • System Options Cassette(s) S1CG/S1HG/S2CH/S2HH Side Discharge Cooling systems ( Table 13 CAC_ refers to CACG/CACH; CAH_ refers to CAHG/CAHH/CAHJ/CAHK Condenser Cassette Btuh SEER Ref. S1CG9000 CAH_09 9,000 13.0 0.72... - Page 62 CACG/CAHG/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • T2CG/T2HG, T3CG/ T2CG/T2HG, T3CG/ Cassette(s) T3HG and T4CG/T4HG 2, 3 and 4 Zone Top Discharge Table 15 Heat pump systems with cassette units (_ _ = G, H, J, or K)
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Page 63: Test Unit Performance Data Sheet
CACH/CAHH/CAHJ & CACH/CAHH/CAHK Air Handlers • Installation, Operation and Maintenance Manual • Test Unit Performance Data Sheet NOTICE The Test Unit Performance Data sheet is provided Have this information ready when calling. Make sure to include the model Number, Serial Number, and Date for use by a qualifi ed service professional in the event of installation. -
Page 64: Emi's Product Line
EMI’s Product Line Indoor Units WLCG/WLHG CACG/CAHG/CAHJ High Wall Air Handler Cassette Air Handler UNCG/UNHG Universal Floor or Ceiling Air Handler Outdoor Units T2CG/T2HG, T3CG/ S2CH/S2HH Dual Zone T3HG and Side Discharge T4CG/T4HG 2, 3 and 4 Zone Top Discharge...
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