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How long will the fan run?

While the unit is in cooling or heating and auto

fan mode is selected, Fan speed is determined by

microprocessor, speed adjustment is made according to

room and setpoint temperatures. Fan switches to High

speed when room temperature deviates by more than

1 degree from setpoint.Fan will switch to low speed if

deviation is 1 degree. When room temperature reaches

setpoint temperature heat/cool call is dropped. Fan

stays on for additional 60 seconds to purge unit of any

residual energy. If High or low is selected fan will operate

continuously regardless of set point or room temperatures.

What causes my indoor unit to freeze-up?

Units are equipped with freeze protection to prevent

freeze up from occurring. If freeze up does occur check the

following.

• Check freeze sensor is located in lowest part of coil.

Generally this is where freeze up begins.

• Check freeze sensor is inserted fully and snug in coil

fin. If not another location may need to be selected.

Take care not to insert sensor directly into coil tube,

insert sensor between two tubes.

• Check indoor air filter. Check coil is clean. If dirty,

clean using appropriate coil cleaner or mild detergent.

• Is equipment being operated in cooling mode when

outdoor temperatures are below 32°F? If it yes, have

condenser fitted with low ambient control so proper

system pressures are maintained.

• Does system have proper refrigerant charge?

System low on refrigerant can cause air handler

freeze-up. Contact a qualified refrigeration service

technician to check system charge. Refrigerant charge

information can be found in Installation, Operation and

Maintenance Manual for outdoor condensing unit.

fReQUenTLY ASKeD QUeSTIOnS

Содержание E Verter WLHV09

Страница 1: ...ominal Capacities WLHV09 WLHV12 WLHV18 WLHV24 WLHV30 WLHV36 Units 9 000 12 000 18 000 24 000 29 800 33 400 Btuh COOL 2 6 3 5 5 3 7 0 8 7 9 8 kW 8 800 10 000 18 000 21 000 26 000 26 400 Btuh HEAT 2 6 2...

Страница 2: ...ontrol Operation 30 Controller Features 31 Controller Fault Conditions 32 Maintenance 33 Troubleshooting 34 Frequently Asked Questions 36 Specifications And Dimensions 37 Wlhv System Options 38 Test U...

Страница 3: ...to verify unit has been installed correctly Run unit for one complete cycle to verify proper function To obtain technical service or warranty assistance during or after installation contact your loca...

Страница 4: ...grounded electrical supply Do not fail to properly ground this unit Check the rating plate on the unit before installation to verify voltage shown is same as electric supply to the unit Rating plate...

Страница 5: ...4mm 7 5 16 Model A B C D E Shipping weight Depth in mm Height in mm Length in mm Mounting bracket clearance in mm Tubing access clearance in mm Pounds kg WLHV09 WLHV12 9 7 8 251 15 387 38 978 24 610 2...

Страница 6: ...air handlers freeze up Test operation Allows testing after installation Runs at rate condition speeds for set ups and charging Non volatile back up memory maintains control settings for indefinite per...

Страница 7: ...truction See Figure 2 Site Preparation Mount unit plumb and level to vertical surface to prevent unit vibration and noise Mount unit directly to smooth surface such as wallboard or similar material Mo...

Страница 8: ...Figure 3 Page 7 2 Determine appropriate hole size Cut through the wall 3 Use supplied wall bracket See Figure 4 4 Secure bracket to wall with wood screws or masonry anchors Insure bracket is mounted...

Страница 9: ...contact with sharp edges Wrap refrigeration valves with wet rag heat sink to protect valves while brazing See Figure 9 Page 10 DO NOT use suction line size larger than condenser service valve connecti...

Страница 10: ...d can be made from scrap metal 4 Braze tubing into fittings 5 Install all panels removed to this point Panels are required for proper air flow 6 Both lines of line set must be insulated entire length...

Страница 11: ...systems require field charge adjustments Refer to Refrigerant Charge Tables for proper weight charge Charge with dial a charge or weighed in with scale NOTICE It is illegal to discharge refrigerant in...

Страница 12: ...V9000 WLHV09 25 oz ft 23 g m 39 5oz 1120g S1HV2000 WLHV12 25 oz ft 23 g m 39 5oz 1120g S1HV8000 WLHV18 64 oz ft 59 g m 54 0oz 1531g S1HV4000 WLHV24 64 oz ft 59 g m 54 0oz 1531g S1HV3000 WLHV30 64 oz f...

Страница 13: ...to expose control box Locate wiring diagram on inside of end cap See Figure 17 Units rated 208 230V primary side of transformer is factory wired for 230V For 208V power supply transformer tap must be...

Страница 14: ...voltage interconnecting wires between indoor and outdoor units Each wire COM1 COM2 SC 24 VDC RV and RV should connect to same named terminal indoor and outdoor See Figure 19 and Figure 20 RV signal is...

Страница 15: ...f 2 cables or 30 feet of interconnect cable Do not slice cables together on site Hand held remote is required to enter Test Mode Wired wall thermostat has limited control capabilities for technician t...

Страница 16: ...16 Electrical Wiring Figure 22 Wall Mounted Thermostat Configuration Cooling Only Figure 23 Wall Mounted Thermostat Configuration Heat Pump...

Страница 17: ...en right end cap using Phillip head screw 3 Replace and tighten remaining screws across bottom panel 4 Replace left end cap See Figure 25 5 Tighten screw on right when end cap is properly seated 6 Tig...

Страница 18: ...enser mounted Electronic Expansion Valve EXV continuously adjusts refrigerant flow to maintain 15 F 8 3 C superheat at compressor Expanded refrigerant froth travels through small diameter tube of line...

Страница 19: ...inimum compressor run times and outdoor coil defrost are in place whenever compressor runs in Heating Mode Condenser mounted Electronic Expansion Valve EXV continuously adjusts refrigerant flow to mai...

Страница 20: ...n on page 29 for setup and operation when using wall thermostat Unit Operation is dependent on room temperature It may be necessary to warm room before testing unit s cooling abilities Before Starting...

Страница 21: ...ing mode press to decrease setting FAN Press to toggle between fan modes High Med Low or Auto PROGRAM Normal operation Press to toggle between manual operation and Pre programmed 7 day run mode Config...

Страница 22: ...g mode press to decrease the setting LEFT ARROW Press for previous item selection RIGHT ARROW Press for next item selection FAN Press to toggle between fan modes High Med Low or Auto PROGRAM Normal op...

Страница 23: ...7 Day Programming See Table 4 Page 25 to record settings Day of week Mon Tue Wed Thu Fri Sat Sun Louver is closed when fan is off Period of day Morning Day Evening Night Periods provide four time sett...

Страница 24: ...h room temperature at or above 71 F heating is on with room temperature at or below 65 F Check filter time 05 F Lt 2 5 7 10 12 250 hours 500 hours 750 hours 1000 hours 1250 hours 10 Set this time for...

Страница 25: ...Temp Time Temp Time Temp Time Temp Monday Tuesday Wednes day Thursday Friday Saturday Sunday To copy the settings from any day to the entire week 1 Select the day to be copied 2 Simultaneously press...

Страница 26: ...remote while in hibernate mode Remote returns to mode it was in prior to entering hibernate mode Power Pressing POWER button momentarily switches unit either on or off 1 OFF mode LCD displays time of...

Страница 27: ...ut Electric Heat Heat Pump Unit Outdoors EMI heat pumps are intended to operate with indoor air handler with optional electric heat If indoor air handler without electric heat is matched with heat pum...

Страница 28: ...inues to boost room temperature back up to setpoint temperature If room temperature rises above setpoint temperature by 2 degrees heating stops and cooling continues to bring room temperature back dow...

Страница 29: ...ry or Fan modes 3 Pressing PROGRAM button momentarily enters or exits Pre Programmed Run mode 4 The word PROGRAM appears in LCD display 5 The setpoint changes to programmed setting at selected time To...

Страница 30: ...es not start for at least 3 minutes short cycle protection Electric heat Operation Optional wired wall controller operation with electric heat control must be configured properly Remote Thermostat ON...

Страница 31: ...eat pump mode Minimum Run Time Minimum on time prevents compressor or heat source from cycling off prematurely Minimum ON time for both compressor and electric heat is 2 minutes Drain Pan Sensor Drain...

Страница 32: ...On 10 Condenser coil temperature too high or low Check system air flow and sensor On 11 Suction temperature too high or low Check system air flow and module On 12 Outdoors ambient temperature too high...

Страница 33: ...g 3 Replace filters clips and front grille before operating unit See Figure 33 WARNING DO NOT operate unit without filter and front grille in place 4 Vacuum dust from return air grille and coil surfac...

Страница 34: ...low volt interconnecting wires between indoor unit outdoor and optional thermostat Air handlers with unit mounted controls require contacts wired to same name indoors and outdoors COM1 COM2 SC and 24...

Страница 35: ...r handler unit provides low volt control power to both indoor air handler and outdoor condenser between SC and 24VDC terminals This is DC voltage use proper scale on meter Cooling EMI heat pump system...

Страница 36: ...eeze up does occur check the following Check freeze sensor is located in lowest part of coil Generally this is where freeze up begins Check freeze sensor is inserted fully and snug in coil fin If not...

Страница 37: ...nit Specifications and Dimensions Table 7 WLHV Interconnecting Line Sizes MODEL VOLTS HZ PH FAN RLA HP HEATER K W AMPS TOTAL AMPS MIN VOLT M C A HACR BRKR WLHV 09 12 208 230 60 1 0 34 0 02 0 34 197 0...

Страница 38: ...0 67 9 0 R410A Table 9 Heat Pump System With Wall Units Condenser Wall Units Cooling Btuh Heating Btuh SEER HSPF SHR EER COP Ref S1HV9000 WLHV09 9 000 8 800 16 7 8 2 0 75 13 5 3 2 R410A S1HV2000 WLHV1...

Страница 39: ...Air handlers Entering Air DB Air handlers Entering Air WB Air handlers Leaving Air DB Air handlers Leaving Air WB Outdoor Section Entering Air Leaving Air Temperature Split Operating Pressures Compres...

Страница 40: ...Phone 1 800 228 9364 Fax 1 800 232 9364 2201 Dwyer Avenue Utica NY 13501...

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