Table of Contents
Advertisement
HigH EfficiEncy DuctlEss split systEm
WlcA/WlHA HigH WAll EVApORAtOR
stRAigHt cOOl/HEAt pump*
Nominal Circuit Capacities:
WLHA 9,000, 12,000, 18,000, 24,000 Btuh*
and WLCA (only) 30,000 & 36,000 Btuh
* Heat Pump only available for 9,000-24,000 Btuh units.
WLCA/WLHA
Enviromaster International LLC
5780 Success Dr.
An ISO 9001-2000 Certified Company
Rome, NY 13440
www.enviromaster.com
P/N# 240006021 Rev. 1.3 [05/07]
Advertisement
Table of Contents
Related Manuals for EMI WLHA
Summary of Contents for EMI WLHA
- Page 1 HigH EfficiEncy DuctlEss split systEm WlcA/WlHA HigH WAll EVApORAtOR stRAigHt cOOl/HEAt pump* Nominal Circuit Capacities: WLHA 9,000, 12,000, 18,000, 24,000 Btuh* and WLCA (only) 30,000 & 36,000 Btuh * Heat Pump only available for 9,000-24,000 Btuh units. WLCA/WLHA Enviromaster International LLC 5780 Success Dr.
- Page 2 And mAintEnAnCE mAnUAL This manual is intended as an aid to a qualified service personnel for proper installation, operation, and maintenance of EMI AmericaSeries high efficiency evaporators. Carefully read these instructions before attempting installation or operation. Failure to follow these instructions may result in improper installation, operation, service, or maintenance, possibly resulting in fire, electrical shock, property damage, personal injury, or death.
- Page 3 The WLCA/WLHA is equipped with unit mounted infrared compatible controls which also sup- ports 24V remote wall thermostat operation. Optional hand held remote is available.
- Page 4 Determine how power wire (high and low voltage) condensate drainage, and refrigerant piping may be run to and from the unit. WLCA/WLHA - Ensure that intercon- nect tubing is within the maximum allowable length of 100’ including a maximum 35’ lift.
- Page 5 WLCA/WLHA moUntinG prEpArAtion The WLCA/WLHA must be mounted plumb and level to a vertical surface to prevent unit vibration and/or unwanted noise. It is recommended that the unit be mounted directly to a smooth surface such as Sheetrock ® wallboard or similar material.
- Page 6 WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions All wiring should be in accordance with the National Electric Code (NEC) and the local building codes. 1. Make sure power is off. 2. Check the unit rating plate for circuit am- pacity and breaker or time delay fuse size.
- Page 7 WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions 4. To access High and Low wiring remove the screw on the front of the control box. High Volt Electrical Wiring 5. Refer to the wiring diagram to connect the power wire to Black L1 and the other wire to Red or White (115V) L2 at the power connector location.
- Page 8 WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions LoW VoLt intErConnECt WirinG for Unit moUntEd ControLs Unit mount Controls Straight Cool Figure 1A Not used Low Volt interconnect diagram intercon- nect diagram Figure 1A and Figure 1B for unit mounted controls. the 24V control transformer is located in the air handler unit.
- Page 9 WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions Heat pump Connection remote thermostat – two-stage Heating Low Volt interconnect diagram interconnect diagram figures 2A, 2B & 2C for remote wall thermostat control. Depending on the thermostat re- quired or selected, air handlers may...
- Page 10 WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions pipinG do’s And don’ts • Avoid piping on a rainy day. • Use refrigerant grade copper tubing. • Use a tubing bender and avoid unnec- essary bending. • Cap ends of lines until ready for final connections.
- Page 11 18,000 Btuh compressor (“8” in the capacity decoding field). The piston will need relacement only on the 18,000 Btuh zone.* Your EMI evaporator unit contains the appropriate piston for your model. Refer to this document to determine if a change is required based on your condenser rating. If your match is not listed below no piston change is required.
- Page 12 WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions WArninG I t i s i l l e g a l t o d i s c h a r g e refrigerant into the atmosphere. Use proper reclaiming methods and equipment when installing or servicing this unit.
- Page 13 WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions Top discharge condeser shown refer to refrigerant Charge table for specified line charge. IMPORTANT NOTES: I. To find the charge adjustment and system charge for any evaporator and tubing length: Line Adjustment = (Line Chg/Ft) x Line Length System Total = Factory Charge + Line Adjustment 2.
- Page 14 WLCA/WLHA HiGH WALL EVAporAtor instALLAtion instrUCtions rEAssEmBLinG tHE WLCA/WLHA CABinEt When satisfied that the system is leak free reinstall the bottom and left end cap in the precise order shown below: 1. Replace the bottom panal. 2. Fasten the right end cap side first with the Philips-head screw.
- Page 15 Test mode. on/off Pressing the “on/off” button once will switch the unit either on or off. WLCA/WLHA High Wall Evaporator “timEr” button = enter or exit Sleep Timer mode. “timE” button = enter or exit Set Time mode. “proG” button = enter or exit Pre-prog.
-
Page 16: Configuration Mode
The louver mode allows selection of six different fixed louver positions or auto (oscillation) lou- WLCA/WLHA High Wall Evaporator UsEr intErfACE BUttons ver mode. To enter the louver mode press and hold the Fan/Louver button for three seconds. - Page 17 – Unit moUntEd KEy pAd modE Unit mount infrared Control operation EMI Air Handlers are equipped with a unit mount, infrared compatible control pack- age. This user friendly, microprocessor control is designed to optimize system performance and protect the refrigeration system from unwanted short cycling and evaporator freeze-ups.
- Page 18 For electric heat operation, first turn the unit on via the ON/OFF button. Then se- lect Heat mode via the MODE button. The WLCA/WLHA High Wall Evaporator room temperature and setpoint tempera- ture will be displayed. Press either the Up or Down arrow buttons to change the setpoint temperature.
- Page 19 If the room temperature rises above the setpoint tem- WLCA/WLHA High Wall Evaporator perature by two degrees, heating will stop and cooling will continue to bring the room temperature back down to setpoint temper- ature.
- Page 20 Then, press the “FAN” and “PROG” buttons simultaneously for three seconds. The selected day will be copied to the rest of the week. WLCA/WLHA High Wall Evaporator manual run This is normal operating (non pre-pro- gram run) mode. Settings for temperature,...
- Page 21 LCD Backlight (pg. 23) Louver position (pgs. 16 & 17) Test Mode (pgs. 16 & 22) WLCA/WLHA High Wall Evaporator While the unit is in the Off mode, pressing the “MODE” and “PROG” but- tons simultaneously for 10 seconds will enter the Configuration mode.
- Page 22 Selecting a thermostat “by others” When selecting a thermostat other than those offered by EMI, it is important to choose a 24V thermostat that matches your application. EMI equipment is com- patible with most mercury bulb, digital or power steeling thermostats.
- Page 23 The outdoor condenser will stop. The fan will operate as described in Fan Operation. WLCA/WLHA High Wall Evaporator Note: Once the cooling has cycled off or following a power outage, the com- pressor will not start for at least three minutes (See Short Cycle Protection).
- Page 24 Minimum Run Time: Once started, the minimum on time pre- vents either the compressor or heat WLCA/WLHA High Wall Evaporator source from cycling off prematurely. The minimum ON time for both the compressor and electric heat is two minutes. Minimum...
-
Page 25: Memory Backup
CooL Pressing the “COOL” button will place the unit in Cool mode. NOTE: Batteries Included. WLCA/WLHA High Wall Evaporator Condensate fault: E02 If the control senses a condensate fault condition either through the optional con- densate pumps safety switch or the drain pan sensors, the LCD display will flash error code “E02”. - Page 26 Test each power and circuit connec- tion before powering up the system. Use the unit mounted electronic thermostat con- trols to start the system. (Refer to the Initial WLCA/WLHA High Wall Evaporator Table #2 proGrAmminG sCHEdULE initiAL stArt-Up Start-Up and the operating instructions in Control Operation Section, thermostat, unit mount or remote.)
- Page 27 Suction out Evaporator Capacity Calculations DB - Temp Split at evap. Compressor Superheat Sub Cooling WLCA/WLHA High Wall Evaporator this information ready when calling. Make sure to include the Model Number, Serial Number, Date of Installation. Call our Technical Support Department @ 1-800-228-9364.
- Page 28 Turn the POWER OFF to the unit be- fore servicing or cleaning. Service should be performed by a qualified service agency and an annual system check is recommended. EMI units are designed and constructed for reliability and long life with minimal maintenance. To insure peak operating efficiency: 1.
- Page 29 Please have the full model and serial number available prior to calling. EMI America Series evaporators are designed to operate with EMI America Series condensers. The evaporator (indoor unit) and condenser (outdoor unit) are to be WLCA/WLHA High Wall Evaporator mAintEnAnCE 5.
- Page 30 WLCA/WLHA High Wall Evaporator Continued Figure 2 C power supply Check When trouble shooting any EMI prod- uct, it is important to first check the rating plate for proper field voltage and breaker size. Secondly using a voltmeter check the incoming power supply to see that it agrees with the rating plate.
- Page 31 For air handlers with unit mounted controls, wires (WLCA/WLHA) designated “Y” (yellow) and “C” (brown) of the indoor air handler should be connected to the corresponding “Y” (yellow) and “C” (brown) wires or terminals of the outdoor condenser.
- Page 32 Heat pump with Electric Heat Continued EMI heat pump systems utilize a reversing valve is that is energized in the cooling mode. The reversing-valve signal is provided through the orange (O) low Volt wire of the air handler or thermostat. It should remain energized constantly as long as the indoor unit or thermostat remains in cooling mode.
- Page 33 The system has just been installed us- ing an EMI indoor unit and a non-EMI condenser. There is no display and the unit will not operate. A: EMI air handlers are manufactured with a low Volt transformer installed. When...
- Page 34 Also check that the coil is clean. If the coil is dirty then it should be cleaned using an appropriate coil cleaner or mild detergent. WLCA/WLHA High Wall Evaporator Continued Continued • Is the equipment being operated in cooling mode when outdoor temperatures are below 60°F? If it...
- Page 35 WLCA/WLHA HiGH WALL EVAporAtor spECifiCAtions And dimEnsions notE: Due to EMI’s ongoing development programs, design and specifications may change without notice. 1 ½” 2” WLCA/WLHA pHysiCAL dimEnsions “A” model depth WLHA09 9 ⅞” WLHA12 9 ⅞” WLHA24 9 ⅞” WLCA30 9 ⅞”...
- Page 36 Btuh 1,225 1,250 * WLCA/WLHA Suction Connection size is 3/4” O.D. and must bush down at the WLCA/WLHA Unit. ** WLCA Suction Connection size is 5/8” O.D. a factory supplied kit is provided to transition to 3/4” O.D. interconnect.
- Page 37 Due to EMI’s ongoing development programs, design and specifications S1CA/S1HA Side Discharge CooLinG systEms WitH WALL Units Condenser S1CA9 S1CA2 S1CA8 S1CA4 S1CA3 S1CA6 HEAt pUmps systEm options WitH WALL Units Condenser Wall Unit S1HA9 WLHA09 S1HA2 WLHA12 S1HA8...
- Page 38 WLCA/WLHA systEm options notE: Due to EMI’s ongoing development programs, design and specifications WLCA systEm options WITH t2CA top disCHArGE Wall Unit(s) WLHA24 WLHA24 WLHA09+WLHA24 WLHA24 WLHA12+WLHA24 systEm options WITH t3CA top disCHArGE Wall Unit(s) WLHA09+WLHA24 WLHA09 WLHA12 WLH09A+WLHA24 WLHA09+WLHA12+WLHA24...
- Page 39 The remedies provided for in this warranty are exclusive and shall constitute the only liabilities on the part of EMI including any statements made by any individual which shall be of no effect. for sErViCE or rEpAir:...
- Page 40 Emi’s HiGH EffiCiEnCy prodUCt LinE EVAporAtors WLCA/WLHA CACB High Wall Evaporator Cassette Evaporator CondEnsErs S1CA & S1HA Single Zone S2CA Dual Zone Side Discharge Side Discharge T2CA, T3CA & T4CA 2, 3 & 4 Zone Top Discharge Phone: 1-800-228-9364 5780 Success Drive,...