EMI WLHG09 Installation, Operation And Maintenance Manual Download Page 1

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WLCG/WLHG

High-Efficiency Ductless Split System High-Wall Air Handlers

Straight cool / Heat pump nominal capacities

WLHG09

WLHG12

WLHG24

Units

9,000

12,000

18,000

23,800

Btuh

2.6

3.5

5.3

7.0

Straight cooling only

WLCG30

WLCG36

Units

28,200

33,600

Btuh

8.3

9.8

Installation, Operation and

Maintenance Manual

ECR International Inc

2201 Dwyer Ave.

Utica, NY 13501

www.enviromaster.com

An ISO 9001-2008 Certified Company

P/N 240008111, Rev. G [06/18/10]

WLCG/WLHG

Summary of Contents for WLHG09

Page 1: ...WLHG24 Units 9 000 12 000 18 000 23 800 Btuh 2 6 3 5 5 3 7 0 kW Straight cooling only WLCG30 WLCG36 Units 28 200 33 600 Btuh 8 3 9 8 kW Installation Operationand Maintenance Manual ECR International I...

Page 2: ...Examine the exterior Remove cover and examine piping for signs of damage NOTICE The EMI series high efficiency air handler is backed by EMI and ECR International is tested rated and certi fied in acco...

Page 3: ...damage personal injury or death Safety Instructions This manual is intended as an aid to quali fied service personnel for proper installa tion operation and maintenance of the EMI series high efficien...

Page 4: ...cordance with AHRI standards 210 240 2008 and UL 1995 Verify Unit Before Installing Controls and components Factory installed or supplied Large LCD Backlit Display Single unit mounted control package...

Page 5: ...California Energy Commission compliant Condensate drain pan over flow protec tion Cabinet Features Durable ABS plastic cabinet with a galva nized steel sub chassis Easily accessible washable reusable...

Page 6: ...the left end cap 1 The piston orifice Figure 1 pg 6 is located in the upper left corner of the unit 2 Disassemble the orifice joint remove the factory installed orifice and replace with the 3 orifice...

Page 7: ...Minimum distance from the ceiling is stated on the template provided with the unit packag ing The cabinet left and right end caps must be accessible for removal without obstruction See Figure 2 Page...

Page 8: ...ll bracket is fastened to the back of the unit Secure the bracket to the wall with 5 the appropriate screws for wood or anchors for masonry Ensure the bracket is mounted in a manner that will support...

Page 9: ...t must have a separate branch 2 circuit protected by a time delay fuse or breaker Refer to the unit rating plate for theproperwireandbreakerortimedelay fuse size Inspecttheexistingwiringforanydefects...

Page 10: ...diagramtoconnectthe 1 powerwiretoBlackL1andtheotherwire to Red or White 115V L2 at the power connector location Figure 10 pg 10 Connect the ground wire to the ground 2 lug or lead at the same location...

Page 11: ...O orange may not be needed and should be protected by a wire nut from making contact with the junction box or other metal surfaces Heat pump connection Heat Pump Connection In addition to the Y and C...

Page 12: ...enser Depending on the models selected the inter connect control wiring may be effected NOTICE For wall thermostat mode the key pad will have limited operation see Se quence of Operation Wall mounted...

Page 13: ...de for EMI models S1HG heat pump condensers NOTICE Heat pumps only Two stage heating requiresthecombinationofaheatpump condenser and an indoor unit that is equipped with an electric strip heater The i...

Page 14: ...alves with a wet rag heat sink to protect valves while brazing See Figure 14 Page 15 DONOTuseasuctionlinesizelarger than the condenser service valve con nection This can harm the compres sor Install a...

Page 15: ...own in Fig ure 17 Page 14 Refrigerant piping Clean the ends of tubing and insert into 1 fittings Figure 18 page 15 Before brazing Figure 19 page 15 2 Protectvalvesbywrappingwithawet a rag heat sink be...

Page 16: ...10A refrigerant Add and 4 remove only liquid never vapor Chargetoproperweight chargebasedon 5 feet of interconnect Figure 22 Page 16 See tables on page 17 CAUTION Refer to the charts in the condenser...

Page 17: ...G30 64 oz ft 59 g m 97 5 oz 2764 g 18 000 Btuh WLHG24 64 oz ft 59 g m 96 75 oz 2742 g S1CG6 WLCG36 64 oz ft 59 g m 80 0 oz 2267 g 24 000 Btuh WLHG24 64 oz ft 59 g m 78 5 oz 2225 g S1HG9 WLHG09 25 oz f...

Page 18: ...et Figure 23 Page 18 Replace the bottom panel 1 Fasten the right end cap first using the 2 Phillips head screw Replaceandtightentheremainingscrews 3 across the bottom panel Figure 24 Page 18 Replace t...

Page 19: ...or setup and operation when using a wall thermostat The unit must be configured for wall ther mostat operation as described in Figure 28 Page 22 NOTICE Operation of the unit depends on the room temper...

Page 20: ...unit ON press to enter or exit sleep timer mode In sleep timer mode the unit will operate for 30 minutes then turn OFF The display will show TIMER During operation use to increase or decrease the setp...

Page 21: ...ange DRY DRY MODE Press to enter dry mode see page 27 FAN FAN MODE Press to enter fan only mode no cooling or heating AUTO AUTO CHANGEOVER MODE Press to enter auto changeover cooling heating see Figur...

Page 22: ...s at setpoint PLUS dead band Heating is on while room temperature is at setpoint MINUS dead band Example setpoint 68 F dead band is 3 F cooling is on with room temperature at or above 71 F heating is...

Page 23: ...ing the button press or by cycling the main power to the unit off then on again Item Setting Values Overview 7 Day programming use Table 4 Page 24 to record settings Day of week Mon Tue Wed Thu Fri Sa...

Page 24: ...using 7 day programming Table 3 Night Cool Heat Auto Evening Cool Heat Auto Day Cool Heat Auto Morning Cool Heat Auto Time Temp Time Temp Time Temp Time Temp Time Temp Time Temp Time Temp Monday Tuesd...

Page 25: ...GH or LOW will be displayed on the LCD See Figure 28 Page 22 FAN operation The indoor unit utilizes a two speed motor with three operational fan modes The FAN button will allow the selection of the de...

Page 26: ...iedfor at least 60 seconds and the two minute minimum run time has elapsed the com pressor will cycle off The fan will operate as described in Fan operation page 25 NOTICE Once the compressor is switc...

Page 27: ...mpressor will take over the heating demand Theelectricheaterwillnotre startuntila three minute delay has elapsed Once the room temperature is satisfied and the two minute minimum run time has elapsed...

Page 28: ...point tem perature will be displayed Press either the Up or Down arrow but tons to change the setpoint temperature The setpoint temperature will change by one degree with each successive press of the...

Page 29: ...available thermostats Itisimportanttochooseathermostatthat will match the equipment selected Forsingle stagecoolingorheating choose a single stage heat cool thermostat If an outdoor heat pump unit and...

Page 30: ...ome thermostats are equipped with an AUTO ON fan switch When this switch is placed in the ON position the indoor fan will run con tinuous WhentheswitchisintheAUTOposition the indoor fan will cycle wit...

Page 31: ...eat pump with Electric heat Two stage heating For wall thermostat operation for two stage heating including a heat pump condenser and indoor electric heat the control must first be configured properly...

Page 32: ...n be set in the Configuration By selecting OFF the backlight will re main off at all times ByselectingON thebacklightwillremain on at all times including while in the Off mode interface If Intermitten...

Page 33: ...enses a condensate fault condi tion either through the optional condensate pumps safety switch or the drain pan sensors the LCD display will flash error code E02 The compressor will switch off for a m...

Page 34: ...the filter as needed following the pro cedure given here WARNING The filter must be cleaned regularly Allowing dust to collect on the filter will resultinreductionofairflowandcausethe unit to lose eff...

Page 35: ...ille and coil with a Figure 34 vacuum Wipe the chassis with a damp Figure 35 cloth to clean Replacefilters clipsandfrontgrillebefore 3 operating the unit Figure 33 Page 35 WARNING DO NOT operate the u...

Page 36: ...If you are unable to locate the wiring diagram please call the factory technical service line at 800 228 9364 and one can be faxed mailed or e mailed Please have the full model and serial number avai...

Page 37: ...nitsrated208 230Vand 104V for units rated 115V Also verify low voltage power place a volt meteracrosslowvoltterminalsRandCatthe indoor unit The voltage should be 24V Test mode Test mode is available f...

Page 38: ...located on the heater end plate or on the heater assembly will interrupt power to the heater should an overheat condition occur Each electric heat assembly is also equipped withaone timefuselink Shoul...

Page 39: ...for the second stage of heating The electric heat should energize along with the 24v compressor signal between Y and C Verify that the amp draw corresponds with to the electric heat rating The follow...

Page 40: ...ds of the float switch Then with anOhmmeter checkforcontinuityacrossthe switch If the switch is open then the pump is not clearing or the switch may be bad Q The display on the indoor unit is blank Wh...

Page 41: ...he indoor air filter It should be clean and free of dirt A dirty filter will reduce airflow and efficiency Also check thatthecoilisclean Ifthecoilisdirtythen it should be cleaned using an appropriate...

Page 42: ...ce in mm Tubing access clearance in mm Pounds kg WLHG09 9 7 8 251 15 387 38 978 24 610 26 673 58 0 26 4 WLHG12 9 7 8 251 15 387 38 978 24 610 26 673 60 3 27 4 WLHG24 9 7 8 251 15 387 48 1232 34 864 36...

Page 43: ...ICE Due to ongoing product development designs specifications and performance are subject to change without notice Please consult the factory for further information Discharge air speed and flow at 23...

Page 44: ...S1CG6 WLCG36 33 600 13 0 0 69 11 6 R410A S2CG99 2 WLHG09 18 000 13 0 0 73 12 1 R410A S2CG22 2 WLHG12 24 000 13 0 0 68 12 0 R410A S2CG92 1 WLHG09 1 WLHG12 21 000 13 0 0 70 12 0 R410A Heat pump system...

Page 45: ...0 41 500 13 0 7 7 0 72 11 5 3 1 410A T4HG9922 2 WLHG09 2 WLHG12 42 000 37 800 13 0 7 7 0 74 11 5 3 2 410A T4HG9992 3 WLHG09 WLHG12 39 000 35 900 13 0 7 7 0 76 11 5 3 4 410A T4HG9999 4 WLHG09 36 000 34...

Page 46: ...Amps ID Fan Motor Volts ID Fan Motor Amps Total Volts Total Amps Temperatures Degrees F Compressor Suction Compressor Discharge Liquid Out Cond Liquid before Expansion Suction out Air handler Capacit...

Page 47: ...18 10 47 EMI s Product Line Indoor Units Outdoor Units S1CG S1HG Single Zone Side Discharge S2CG S2HG Dual Zone Side Discharge WLCG WLHG High Wall Air Handler UNCG UNHG Universal Floor or Ceiling Air...

Page 48: ...Phone 1 800 228 9364 Fax 1 800 232 9364 2201 Dwyer Ave Utica NY 13501...

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