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EMI CAHV09 Installation, Operation And Maintenance Manual

Variable speed cassette ductless split system
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An ISO 9001-2008 Certifi ed Company
Variable Speed Cassette Ductless
Variable Speed Cassette Ductless
Split System Air Handlers
Split System Air Handlers
Straight Cool / Heat Pump Nominal Capacities
CAHV09
CAHV12
9,000
12,000
2.6
3.5
8400
8800
2.5
2.6
Installation, Operation and
Maintenance Manual
ECR International, Inc.
2201 Dwyer Avenue,
Utica NY 13501
web site: www.ecrinternational.com
CAHV
CAHV18
CAHV24
Units
18,000
24,000
Btuh
5.3
7.0
kW
17000
19000
Btuh
5.0
5.6
kW
P/N# 240009099, Rev. C [08/08/2012]
COOL
HEAT

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  • Page 1 CAHV Variable Speed Cassette Ductless Variable Speed Cassette Ductless Split System Air Handlers Split System Air Handlers Straight Cool / Heat Pump Nominal Capacities CAHV09 CAHV12 CAHV18 CAHV24 Units 9,000 12,000 18,000 24,000 Btuh COOL 8400 8800 17000 19000 Btuh...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Receiving Information ........................3 Important Safety Information ......................4 General Product Information ......................5 Dimensional/Physical Data ......................6 Installation Considerations ......................8 Mounting The Unit ........................9 Condensate Piping ........................12 Duct Connections ........................13 Refrigerant Piping ........................14 Refrigerant Processing .........................15 Final Assembly ...........................17 Electrical Wiring .........................19 Optional Wired Wall Controller ......................21...

  • Page 3: Receiving Information

    RECEIVING INFORMATION Shipping damage MUST be reported to the carrier IMMEDIATELY. Examine exterior. Remove cover and examine compressor and piping for signs of damage. General Information Installation shall be completed by qualifi ed agency. Retain this manual and warranty for future reference. Installer review this manual to verify unit has been installed correctly.

  • Page 4: Important Safety Information

    WILL result in death or serious injury. WARNING Product Description Indicates a hazardous situation which, if not • EMI Cassette Air handlers are available in two cabinet avoided, could result in death or serious injury. sizes with four output capacities from 9,000–24,000 Btuh.

  • Page 5: General Product Information

    “Test” mode. Electric Heat Option Materials of Construction EMI heat option - heat pumps are intended to operate with • Galvanized steel cabinet with fi re-resistant thermal and indoor air handler, with electric heat. If indoor air handler acoustic foam insulation.

  • Page 6: Dimensional/Physical Data

    DIMENSIONAL/PHYSICAL DATA Figure 1 - Dimensions: Models 9, 12, 18, & 24 (see Table 1, Page 7 ) Model 9-12 Model 18-24 Features Optional discharge knockouts 5¼-inch diameter (3) available Fresh air inlet knockouts 1¼ x 2½ inches - 9/12 (2) available 3x3 18/24 Condensate...
  • Page 7 DIMENSIONAL/PHYSICAL DATA Table 1 Dimensions — Models 9, 12, & 24 (see Figure 1, Page 6 ) Models 9 & 12 Model 18 & 24 Model 42 Dimension Inches Inches Inches 25.00 37.00 37.00 25.00 37.00 49.26 1251 22.50 32.44 32.44 2.04 2.00...

  • Page 8: Installation Considerations

    INSTALLATION CONSIDERATIONS Before Installing Unpacking Cassette fascia and main chassis are packaged together for • Determine best location for mounting unit for room air increased protection. circulation. • Locate outdoor and indoor units as close together as NOTICE possible. • Determine how power wires high and low-voltage, Do not throw template away with packaging.

  • Page 9: Mounting The Unit

    MOUNTING THE UNIT Blanking off Figure 4 Models 9–12 — One Grille & One Filter Fascia discharge slot(s) need blanking off when ducts are used to channel conditioned air to other areas. • Position two polystyrene blanking off strips (provided) in fascia discharge slots to direct air to ducts.
  • Page 10 Dimension A + 1” = Minimum Space Above False Ceiling For Installation Wired Wall Control Optional wired wall control contact EMI for availability. Locate optional wired wall mounted thermostat to insure good temperature control. Select installation position. Position thermostat approximately 5 ft. (1.5m) above fl...
  • Page 11 MOUNTING THE UNIT Mounting Method Figure 7 - Mounting Brackets • In existing construction, remove enough ceiling panels to provide clearance space for mounting unit to ceiling joists. • Before beginning installation, inspect unit location, test strength of ceiling joists to insure they will support unit weight.

  • Page 12: Condensate Piping

    CONDENSATE PIPING Cassette is supplied with 1/2” I.D. fl exible PVC hose for Figure 10 - Highest Point Of Condensate Piping connection to copper or plastic drain piping. Should Be As Close To Unit As Possible Cassette installation considerations Maximum pump lift is 36” (0.9m) from base or bottom Correct Correct of unit.

  • Page 13: Duct Connections

    DUCT CONNECTIONS Attach branch duct and fresh air duct collars to cassette Figure 12 - Knockouts chassis using following steps. Branch Duct Knockout Recommend install no more than 10 feet (3m) of branch duct or fresh air duct. Cassette 9-12 Cassette 9-12 Locate knock-out holes.

  • Page 14: Refrigerant Piping

    REFRIGERANT PIPING Piping Preparation Figure 14 - Piping Connections At Unit • Avoid piping on wet and rainy days. • Use only clean, refrigeration-grade copper tubing. • Use tubing benders to guard against kinking. • Verify no burrs remain on fi ttings. •...

  • Page 15: Refrigerant Processing

    REFRIGERANT PROCESSING Charging Unit Figure 18 - Manifold Set Connections At Unit Attach manifold set, vacuum pump, & micron Gauge. See Figure 18 . HIGH PRESSURE Evacuate line to 500 microns or less to insure all moisture has been removed and there are no leaks. LOW PRESSURE See Figure 19 .
  • Page 16 Table 6 - S1CV / S1HV R410A Refrigerant Charge Table Condenser Cassette Line Charge Factory Pairing Per Foot Charge S1CV9000 CAHV09 .25 oz./ft (23 g/m) 39.5oz (1120g) S1CV2000 CAHV12 .25 oz./ft (23 g/m) 39.5oz (1120g) S1CV8000 CAHV18 .64 oz./ft 59 g/m) 54.0oz (1531g)

  • Page 17: Final Assembly

    FINAL ASSEMBLY Assembly Instructions Figure 22 - Mounting Bolts To install the four fascia mounting bolts: Locate supplied bolts and washers from kit bag. Place washers on bolts. Screw mounting bolt with washer into chassis leaving approximately 1” (25mm) to hang fascia. Insure white panel fasteners holding fascia polystyrene are pushed fi...
  • Page 18 FINAL ASSEMBLY Figure 25 - Connect Vane Motor Plug Into Figure 27 - Secure Fascia To Chassis Socket On Chassis Female vane motor plug on chassis Do not over-tighten bolts could damage fascia and drain pan. Figure 28 - Adjust Louver Position 30° From Plumb Male Vane Motor Plug On Fascia scia...

  • Page 19: Electrical Wiring

    ELECTRICAL WIRING General Electrical Requirements Figure 29 - Remove Control Box Cover Electrical wiring must be in accordance with all electrical codes. In absence of such requirements to the National Electrical Code (NEC). WARNING Electrical shock hazard. Turn OFF electrical power supply before making electrical connections.
  • Page 20 ELECTRICAL WIRING Low-Voltage Electrical Wiring Figure 31 - Unit-Mounted Controls — Cooling Only Low-voltage interconnect wiring must be 18 AWG. Locate 24V control transformer in air handler. Provides low-voltage control power to both air handler and condenser. Low-voltage interconnect control wiring may vary depending on model selected.

  • Page 21: Optional Wired Wall Controller

    OPTIONAL WIRED WALL CONTROLLER Optional Controller EMI Wired control EMI offers wired wall control compatible with EMI split sys- tem air handlers for variable speed condensers. Fan Operation Controls call for fan operation (On or Off). After controller has been satisfi ed and call for heating or cooling has been removed, indoor fan remains on for ad- ditional 60 seconds.

  • Page 22: Optional (Cahv) Wired Wall Controller Operation

    OPTIONAL (CAHV) WIRED WALL CONTROLLER OPERATION Wall Mounted Control Confi guration Wall mounted control layout, see Figure 34 and Figure 35 . Low voltage interconnect wiring must be at least 18 AWG. 24V control transformer is located in air handler unit. Provides low volt control power to both air handler and condenser.
  • Page 23 OPTIONAL (CAHV) WIRED WALL CONTROLLER OPERATION A/C Condenser With Electric Heat Operation NOTICE Confi gure wired wall controller operation with optional elec- tric heat control - Heat Source ON. Once cooling has cycled off or following power outage, compressor will not start for at least three Wired Wall controller’s call for electric heat operation - (On (3) minutes (short-cycle protection).

  • Page 24: Initial Start-Up - Cahv Units

    INITIAL START-UP — CAHV UNITS WARNING Electrical shock hazard. Turn off power to indoor and outdoor units before proceeding. Failure to follow these instructions could result in death or serious injury. CAHV Units • Set controller functions before proceeding with start-up. •...
  • Page 25 INITIAL START-UP — CAHV UNITS WARNING Figure 36 - Checking Condensate Pump Operation Electrical shock hazard. Turn off power to indoor and outdoor units before proceeding. Failure to follow these instructions could result in death or serious injury. Remove adjacent ceiling tile to access condensate pump cover panel.
  • Page 26 INITIAL START-UP — CAHV UNITS Verify Compressor Operation — All Systems WARNING Place system controls into cooling mode, with setpoint Electrical shock hazard. Turn off power to indoor and below room temperature. outdoor units before proceeding. Failure to follow Verify compressor start up, noise, vibration, and overall these instructions could result in death or serious system operation.
  • Page 27 INITIAL START-UP — CAHV UNITS Verify Heat Pump Operation - No Electric Heat This is heat pump outdoor unit with no heat source in Cassette (indoor) unit. Set confi guration for Heat Source OFF, Heat Pump ON. See Figure 42, Page 32. Use remote to set MODE to Cool.

  • Page 28: Cahv Controller Overview

    CAHV CONTROLLER OVERVIEW WARNING Figure 37 - EMI Unit Mounted Controller Control Panel Electrical shock hazard. Verify all power is off from both indoor cassette unit and outdoor condenser unit before removing control box cover. Failure to follow these instructions could result in death or...
  • Page 29 CAHV CONTROLLER OVERVIEW Figure 38 - Unit-Mounted Receiver — Chassis-Mounted Display Infrared Receiver Window Power LED Wired Wall Controller mode — on when power is applied to unit. Infrared Controller mode — on while cassette unit is in ON mode; off while unit is in OFF mode.
  • Page 30 CAHV CONTROLLER OVERVIEW FIGURE 39 - CAHV Microprocessor Controller — Infrared Remote Control Press to turn unit ON or OFF. Press and hold 2 seconds to transmit all settings POWER to unit-mounted controller. Press to toggle through operating modes — Heat, Cool, Auto Changeover, Dry MODE or Fan.

  • Page 31: Wired Wall Controller Confi Guration

    WIRED WALL CONTROL CONFIGURATION Figure 40 - Wired Wall Control Operation Wired Controller Button Selections POWER Press to turn unit on or off. MODE Press to toggle through operating modes — Cool, Dry, Fan, Heat or Auto Changeover Normal operation — hold 3 seconds to enter Set Time mode; hold again 3 seconds to exit. In programming mode CLOCK —...
  • Page 32 WIRED WALL CONTROL CONFIGURATION Figure 41 - 7-Day Programming Options For CAHV Item Setting Values Overview To access: Press and hold PROGRAM and CLOCK buttons simultaneously 3 seconds; use arrow keys to select position; save selection and exit by repeating button press. Quick copy —...

  • Page 33: Setting The Controller

    SETTING THE CONTROLLER Figure 42 - Confi guration Mode for CAHV Air Handlers Possible Value Factory Item Display Overview (fl ashing) Settings To access: Press MODE and PROG together 5 seconds, repeat to exit; automatically exits after 20 seconds idle Fahrenheit Temperature Setting 01 F-C...
  • Page 34 SETTING THE CONTROLLER Table 7 Programming Schedule (When Using 7-Day Programming) To copy the settings from any day to the entire week: Select the day to be copied. Simultaneously press the “FAN” and “PROG” buttons for three seconds.

  • Page 35: Hand Held Controller Operation

    HAND HELD CONTROLLER OPERATION When power is fi rst applied to control or after power outage Power there is three (3) minute delay before compressor or Pressing POWER button momentarily switches unit either electric heat will energize. Protects unit from short cycling on or off.
  • Page 36 Optional Heat Pump Without Electric Heat (Heat Pump Unit Outdoors) For cooling operation, turn unit on via POWER button. EMI heat pumps are intended to operate with indoor air Select Cooling mode via MODE button. handler, with optional electric heat.
  • Page 37 HAND HELD CONTROLLER OPERATION When room temperature has been satisfi ed for at least Auto Changeover Mode sixty (60) seconds and two (2) minute minimum on- Auto Changeover mode (ACO), unit must have heat source. time has elapsed, compressor switches off. Control must fi...
  • Page 38 HAND HELD CONTROLLER OPERATION 7-Day Programming Mode The setpoint changes to programmed setting at 7-day Programming mode is used to store settings for Pre- selected time. Programmed Run mode. To use Pre-Programmed Run mode enter program settings When unit is in either Off or On mode, 7-Day through 7-Day Programming mode.

  • Page 39: Wired Wall Controller Operation

    Available settings are 250, 500, 750, 1000, and 1250 hours. Default in Bold. Reversing Valve • If coil freeze condition is detected four times within EMI outdoor heat pump unit’s reversing valve is energized 24-hour period, Clean Filter Alarm appears on cassette in Cooling mode. display.

  • Page 40: Cahv Controller Features

    CAHV CONTROLLER FEATURES Short Cycle Protection (ASCT) • Anti-short-cycle timer (ASCT) is designed to protect compressor from short cycling. • ASCT is activated immediately following Off cycle of outdoor unit. Once room temperature is satisfi ed and outdoor unit switches off, ASCT does not allow outdoor unit to restart unit 3 minute time period has elapsed.
  • Page 41 CAHV CONTROLLER FAULT CONDITIONS Table 8 CAHV Microprocessor Controller Fault Indications Alarm Failure LED- Type/ Fault Condition Description Number of Location Flashes Dirty fi lter Clean fi lter,press warning/clear fi lter button Drain pan condensate fault Condensate, check for drain blockage or pump failure EPROM failure Check indoor EPROM Failure for ambient temperature...

  • Page 42: Maintenance

    MAINTENANCE WARNING Figure 43 Remove Grille Electrical shock hazard. Before removing access panels, verify all power is disconnected from the Model 12 Model 12 unit. Failure to follow these instructions could result Shown Shown in death or serious injury. Have service performed by a qualifi ed service agency. Annual system check is recommended.

  • Page 43: Troubleshooting - General

    Have full model and serial number available prior to calling. Wiring Requirements EMI air handlers are designed to operate with EMI condensers. • Air handler (indoor unit) and condenser (outdoor unit) may be independently connected to electrical service panel and protected by separate time delay fuse or HACR breakers.

  • Page 44: Troubleshooting - Cahv Units

    TROUBLESHOOTING - CAHV UNITS Cooling-Only Units Low Voltage Controls Optional Heat Pump With Electric Heat Applications • Cooling only units require 18 AWG low-voltage Heat Pump systems utilize 6 low volt interconnecting wires interconnecting wires between indoor and outdoor between indoor, and outdoor. units.
  • Page 45 TROUBLESHOOTING - CAHV UNITS Heating Indoor unit contains electronic anti-short-cycle timer feature (ASCT) which prevents outdoor condenser from Two Stage Heating short cycling. Heat pump units accommodate two-stage heating when After control is satisfi ed there is a three (3) minute delay optional electric heater is present in combination with heat before condenser is allowed to restart.
  • Page 46 TROUBLESHOOTING - CAHV UNITS Cassette operation can be controlled through optional wired WARNING wall controller or infrared handheld controller. Electrical shock hazard. Before removing access Heat Pump Units, Model CAHV panels, verify all power is disconnected from the Heat pump units require 18 AWG minimum low-voltage unit.

  • Page 47: Frequently Asked Questions

    FREQUENTLY ASKED QUESTIONS Q: Condenser will not start although indoor unit appears • Does system have proper refrigerant charge? System normal. What should I do? low on refrigerant can cause air handlers freeze-up. To A: At indoor control, verify control is in cooling and check system charge you need to contact a qualifi...

  • Page 48: Specifi Cations

    Elect Heat Total HACR Model M.C.A. AMPS Volt BRKR Volts/HZ/PH RLA H.P. kW AMPS 208/230/60/1 0.35 1/10 – – CAHV09 / 208/230/60/1 0.35 1/10 6.52 CAHV12 208/230/60/1 0.35 1/10 13.04 13.4 16.8 208/230/60/1 0.55 – – CAHV18 / CAHV24 208/230/60/1 0.55 13.04...

  • Page 49: System Performance

    SYSTEM PERFORMANCE CAHV Cassette(s) S1CV/S1HV Side Discharge Table 12 Cooling Systems CAHV Condenser Cassette Btuh SEER Ref. S1CV9000 CAHV09 9,000 15.0 .079 13.0 R410A S1CV2000 CAHV12 12,000 15.8 0.69 12.0 R410A S1CV8000 CAHV18 18,000 17.0 0.74 13.0 R410A S1CV4000 CAHV24 24,000 17.0...

  • Page 50: Test Unit Performance Data Sheet

    TEST UNIT PERFORMANCE DATA SHEET NOTICE Performance Data sheet provided for use by qualifi ed service professional in event there is concern with unit. Have information ready when calling. Include Model Number, Serial Number, and Date of installation. Technical Support Department @ 1-800-228-9364.
  • Page 51 Notes...
  • Page 52 Phone: 1-800-228-9364 2201 Dwyer Avenue, Fax: 1-800-232-9364 Utica NY 13501...

This manual is also suitable for:

Cahv18Cahv12Cahv24

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