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- Installation, Operation And Maintenance Manual
ECR International CACG Installation, Operation And Maintenance Manual - Notice
CACH/CAHH/CAHJ & CACH/CAHH/CAHK
Air Handlers
• Installation, Operation and Maintenance Manual •
P/N 240008108, Rev. G [07/08/10]
45
Set DIP switch #4 to ON
For Wall Th
ermostat Operation the control
must be confi gured through the DIP switches
located on the control board located in the
control box.
Set DIP switch #4 to YES (see
1. Table
6,
Page 32 ).
In wall thermostat mode, the control will
2.
not accept commands from the infrared
remote control.
The filter check timer will default to
3.
1000 Hrs.
Fan Operation
Th
e cassett e unit utilizes a two-speed motor.
In wall thermostat operation, fan speed se-
lection can be made through the DIP switch
sett ings located on the main control board
(Figure 33, Page 31).
With DIP switch #3 set to HIGH, the fan
1.
speed will be set to High.
With DIP switch #3 set to LOW, the fan
2.
speed is set to Low.
See
3.
Table 6, Page 32 for other available
DIP switch selections.
Th
e wall thermostat will control the call for
fan operation (on or off ) through the low-
voltage terminals “R” and “G”.
When the wall thermostat connects “R”
1.
to “G” the fan will energize.
Aft er the thermostat has been satisfi ed and
2.
the call for heating or cooling has been
removed, the indoor fan will remain on
for an additional sixty (60) seconds. Th
is
increases effi
ciency by pulling the remain-
ing energy from the unit.
Some thermostats are equipped with an
AUTO/ON fan switch. When this switch is
placed in the ON position, the fan will run
continuous. When the switch is in the AUTO
position, the fan will cycle with the call for
heating or cooling.
Cooling operation
Th
e wall thermostat will control the call for
cooling operation (on or off ) through the
low-voltage terminals R and Y.
Aft er connecting the thermostat to the
1.
unit, place the system switch in Cooling
mode.
Adjust the setpoint temperature below the
2.
room temperature.
Th
e compressor and fan motors will start
3.
and cooling will begin.
Next, place the setpoint temperature
4.
above the room temperature. Th
e outdoor
condenser will stop.
Th
e fan will operate as described in “Fan
5.
Operation.” pg. 39
NOTICE
Once the cooling has cycled off or fol-
lowing a power outage, the compressor
will not restart for at least three minutes
(anti-short-cycle timer).
Reversing Valve
EMI outdoor heat pump units utilize a
reversing valve that is energized in Cooling
mode. Make sure that the thermostat selected
will energize the reversing valve in Cooling
mode.
CACH/CAHH/CAHK Wall Thermostat Operation
Summary of CACG
Page 1
Cacg/cahg/cahj & cach/cahh/cahk high-ef fi ciency cassette ductless split system air handlers straight cool / heat pump nominal capacities cahj09 cahk09 cahj12 cahk12 cahg24 cahh24 units 9,000 12,000 18,000 24,000 btuh 2.6 3.5 5.3 7.0 kw straight cooling only cacg36 & cach36 units 30,000 36,000 btuh...
Page 2: Contents
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 2 p/n 240008108, rev. G [07/08/10] contents to the installer retain this manual and warranty for future reference. Before leaving the prem- ises, review this manual to be sure the ...
Page 3: Read Before Proceeding
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 3 read before proceeding recognize this symbol as an indication of important safety information. Warning completely read all instructions prior to assembling, installing, ...
Page 4
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 4 p/n 240008108, rev. G [07/08/10] product description th e emi cassett e air handlers are avail- • able in three cabinet sizes with four out- put capacities from 9,000–24,000 btuh...
Page 5
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 5 verify unit before installing (continued) fresh air intake capability on three sides of • cabinet (only two on models 9–12). Four plastic air vanes, motor driven with • ...
Page 6
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 6 p/n 240008108, rev. G [07/08/10] remote thermostat applications cacg/cahg/cahj units require a • wall thermostat for operation. Cach/ cahh/cahk units can be operated by a wall th...
Page 7
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 7 piston/orifi ce replacement (when required) notice piston/ orifi ce replacement — th e factory-installed piston/orifi ce must be replaced on air-handler / condenser combit...
Page 8: Mounting The Unit
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 8 p/n 240008108, rev. G [07/08/10] mounting the unit before installing, consider: determine the best location for mounting • the unit for room air circulation. Locate outdoor and i...
Page 9: Mounting The Unit
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 9 mounting the unit (continued) blanking off th e fascia discharge slot(s) will need blank- ing off when ducts are used to channel the conditioned air to other areas. Posit...
Page 10: Mounting The Unit
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 10 p/n 240008108, rev. G [07/08/10] mounting the unit (continued) positioning th e cassett e installation position should be selected with the following in mind: pipe work, electri...
Page 11: Mounting The Unit
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 11 mounting the unit (continued) mounting method in existing construction, remove enough • ceiling panels to provide clearance space for mounting unit to ceiling joists. B...
Page 12: Mounting The Unit
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 12 p/n 240008108, rev. G [07/08/10] mounting the unit (continued) mounting use the template (see 1. Figure 6, page 11 ) to cut the ceiling opening and determin- ing the rod positio...
Page 13: Condensate Piping
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 13 condensate piping th e unit can now be piped up in accordance with good refrigeration and/or plumbing practices. The cassette is supplied with a 1/2” i.D. Fl exible pvc...
Page 14: Duct Connections
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 14 p/n 240008108, rev. G [07/08/10] duct connections branch duct and fresh air duct collars can be att ached to the cassett e chassis by following the steps below. Notice recommend...
Page 15: Refrigerant Piping
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 15 refrigerant piping caution avoid piping on wet and rainy days. • use only clean, refrigeration-grade • copper tubing. Use tubing benders to guard against • kinking. Be ...
Page 16: Refrigerant Piping
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 16 p/n 240008108, rev. G [07/08/10] refrigerant piping (continued) clean ends of tubing figure 15 place wet rag “heat shield over figure 16 valves plus a sheet metal shield to prot...
Page 17: Refrigerant Piping
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 17 refrigerant piping (continued) refrigerant processing att ach manifold set ( 1. Figure 17 ). Evacuate line to 500 microns or less to 2. Ensure all moisture has been rem...
Page 18: Refrigerant Processing
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 18 p/n 240008108, rev. G [07/08/10] s1cg/s1hg and top discharge r410a refrigerant charge table table 4 ( cac_ refers to cacg/cach; cah_ refers to cahg/cahh/cahj/cahk ) condenser ca...
Page 19: Final Assembly
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 19 final assembly assembly instructions to install the four fascia mounting bolts: 1. Remove the bolts and washers from a. The supplied kit bag. Put washers onto the bolts...
Page 20: Final Assembly
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 20 p/n 240008108, rev. G [07/08/10] final assembly (continued) connect vane motor plug into figure 23 socket on chassis female vane motor plug on chassis male vane motor plug on fa...
Page 21: Electrical Wiring
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 21 electrical wiring removing control box cover figure 27 rating plate electrical connections figure 28 l2 high-voltage cable l1 ground lug ground wire low-voltage low-vol...
Page 22: Electrical Wiring
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 22 p/n 240008108, rev. G [07/08/10] electrical wiring (continued) wiring diagram location figure 29 wiring diagram (on inside wiring diagram (on inside of control panel cover) of c...
Page 23: Wall Thermostat Selection
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 23 wall thermostat selection (optional for cach/cahh/cahk) notice cacg/cahg/cahj units all are operated by a wall thermo- • stat. Cach/cahh/cahk units th e unit’s dip swit...
Page 24: Wall Thermostat Operation
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 24 p/n 240008108, rev. G [07/08/10] wall thermostat operation (optional for cach/cahh/cahk) (continued) fan operation th e wall thermostat will control the call for fan operation (...
Page 25: Wall Thermostat Operation
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 25 wall thermostat operation (optional for cach/cahh/cahk) (continued) electric heat operation for wall thermostat operation with electric heat the control must be confi g...
Page 26: Notice
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 26 p/n 240008108, rev. G [07/08/10] initial start-up — cacg/cahg/cahj units only cahg/cacg louver toggle figure 30 switch toggle switch notice cacg/cahh/cahk units th ese units req...
Page 27: Warning
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 27 initial start-up — cacg/cahg/cahj units only (continued) warning electrical shock hazard — turn off power to indoor and outdoor units is off before proceeding. Reconnec...
Page 28: Notice
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 28 p/n 240008108, rev. G [07/08/10] initial start-up — cach/cahh/cahk units only set dip switches do not turn on power until the dip 1. Switches have been set and the control panel...
Page 29: Warning
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 29 send button for 2 seconds. This will transmit information from the remote to the cassett e. Th e cassett e will respond with a beep, indicating it has received the info...
Page 30: Notice
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 30 p/n 240008108, rev. G [07/08/10] verify heat pump operation (no electric heat) this arrangement uses a heat pump 1. Outdoor unit with no heat source in the cassett e (indoor) un...
Page 31: Warning
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 31 cacg/cahh/cahk microprocessor controller overview emi unit-mounted microprocessor controller — control panel figure 33 dip switches control panel warning electrical sho...
Page 32
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 32 p/n 240008108, rev. G [07/08/10] cach/cahh/cahk microprocessor controller overview (continued) cacg/cahh/cahk microprocessor controller — dip switch settings table 6 dip switch ...
Page 33
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 33 unit-mounted controller — chassis-mounted keypad/display figure 34 cach/cahh/cahk microprocessor controller overview (continued) 1 5 4 3 2 6 1 infrared receiver window ...
Page 34
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 34 p/n 240008108, rev. G [07/08/10] cach/cahh/cahk microprocessor controller — infrared remote control figure 35 power send press to turn unit on or off . Press and hold for 2 seco...
Page 35
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 35 setting the cach/cahh/cahk controller confi guration settings for cach/cahh/cahk figure 36 setting item display possible value (fl ashing) factory settings overview to ac...
Page 36
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 36 p/n 240008108, rev. G [07/08/10] 7-day programming options for cach/cahh/cahk figure 37 item setting values overview to access: press and hold program and clock buttons simultan...
Page 37
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 37 setting the cach/cahh/cahk controller (continued) programming schedule (when using 7-day programming) table 7 night cool heat : : : : : : : auto evening cool heat : : :...
Page 38: Notice
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 38 p/n 240008108, rev. G [07/08/10] cach/cahh/cahk microprocessor controller operation notice when power is fi rst applied to the con- trol or aft er a power outage there is a thre...
Page 39: Notice
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 39 cach/cahh/cahk microprocessor controller operation (continued) power/send pressing the power/send butt on momen- tarily will switch the unit either on or off . In the o...
Page 40: Notice
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 40 p/n 240008108, rev. G [07/08/10] cach/cahh/cahk microprocessor controller operation (continued) cooling mode for cooling operation, fi rst turn the unit on via the power/send bu...
Page 41: Notice
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 41 cach/cahh/cahk microprocessor controller operation (continued) optional heat pump without electric heat (heat pump unit outdoors) notice emi heat pumps are intended to ...
Page 42
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 42 p/n 240008108, rev. G [07/08/10] at that time the electric heat will switch 11. Off and the heat pump (compressor) will take over the heating demand. Th e electric heater will n...
Page 43: Notice
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 43 configuration mode, the unit will run heating operation as described under heat mode. Set time mode th e clock is used by the 7-day programming mode. Th e 1. Clock butt...
Page 44
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 44 p/n 240008108, rev. G [07/08/10] control through the 7-day programming mode. Th e pre-program run mode can be en- 1. Tered from cooling mode, heating mode or auto mode only. Pre...
Page 45: Notice
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 45 set dip switch #4 to on for wall th ermostat operation the control must be confi gured through the dip switches located on the control board located in the control box....
Page 46: Notice
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 46 p/n 240008108, rev. G [07/08/10] electric heat operation th e wall thermostat will control the call for electric heat operation (on or off ) through the low-voltage terminals “r...
Page 47
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 47 cach/cahh/cahk controller features short cycle protection (asct) th e electronic control incorporates an anti- short-cycle timer (asct) feature designed to protect the ...
Page 48
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 48 p/n 240008108, rev. G [07/08/10] cach/cahh/cahk controller fault conditions cach/cahh/cahk microprocessor controller fault indications table 8 timer/alarm led — number of fl ashe...
Page 49: Warning
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 49 warning service should be performed by a quali- fi ed service agency and an annual system check is recommended. Electrical shock hazard — before re- moving the access pa...
Page 50: Troubleshooting — General
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 50 p/n 240008108, rev. G [07/08/10] troubleshooting — general warning service should be performed by a quali- fi ed service agency and an annual system check is recommended. Electri...
Page 51: Troubleshooting — General
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 51 troubleshooting — general (continued) models cacg/cahg/cahj — low-voltage interconnections — wall thermostat figure 42 operation models cach/cahh/cahk — low-voltage int...
Page 52: Notice
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 52 p/n 240008108, rev. G [07/08/10] troubleshooting — cach/cahg/cahj units cooling-only units cooling only units require 18 awg low- voltage interconnecting wires between the indoo...
Page 53: Warning
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 53 th e indoor unit contains an electronic anti- short-cycle timer feature (asct) that will prevent the outdoor condenser from short cycling. Aft er the thermostat is sati...
Page 54
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 54 p/n 240008108, rev. G [07/08/10] two-stage heating two-stage heating combines heat pump and electric heat operation. Heat pump units require an 18 awg low-voltage intercon- nect...
Page 55: Notice
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 55 troubleshooting — cach/cahh/cahk units notice cassette operation can be controlled through either a wall thermostat or an optional infrared handheld controller. To sele...
Page 56: Frequently Asked Questions
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 56 p/n 240008108, rev. G [07/08/10] q: th e condenser will not start although the indoor unit appears normal. What should i do? A: at the indoor thermostat, make sure that the cont...
Page 57: Frequently Asked Questions
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 57 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...
Page 58: Dimensions
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 58 p/n 240008108, rev. G [07/08/10] dimensions dimensions — models 9, 12, 24 and 36 (see dimensions, figure 44 table 9, page 59 ) notice due to ongoing product development, designs...
Page 59: Dimensions
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 59 dimensions (continued) dimensions — models 9, 12, 24 and 36 (see drawing, table 9 figure 44, page 58 ) dimension models 9 & 12 model 24 model 36 inches mm inches mm inc...
Page 60: Specifi Cations
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 60 p/n 240008108, rev. G [07/08/10] specifi cations electrical specifi cations ( table 10 cac_ refers to cacg/cach; cah_ refers to cahg/cahh/cahj/cahk ) model fan motor elect heat to...
Page 61: System Options
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 61 system options s1cg/s1hg/s2ch/s2hh side discharge cassette(s) cooling systems ( table 13 cac_ refers to cacg/cach; cah_ refers to cahg/cahh/cahj/cahk ) condenser casset...
Page 62
Cacg/cahg/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • comfort where it counts 62 p/n 240008108, rev. G [07/08/10] t2cg/t2hg, t3cg/ t3hg and t4cg/t4hg 2, 3 and 4 zone top discharge t2cg/t2hg, t3cg/ cassette(s) heat pump systems with cassette units (_ table 15...
Page 63: Notice
Cach/cahh/cahj & cach/cahh/cahk air handlers • installation, operation and maintenance manual • p/n 240008108, rev. G [07/08/10] 63 model number date: technician: serial number mode: cooling indoor section notes cassette entering air – db cassette entering air – wb cassette leaving air – db cassette...
Page 64: Emi’S Product Line
Phone: 1-800-228-9364 fax: 1-800-232-9364 2201 dwyer ave utica, ny 13504 emi’s product line indoor units outdoor units s1cg/s1hg single zone side discharge s2ch/s2hh dual zone side discharge wlcg/wlhg high wall air handler uncg/unhg universal floor or ceiling air handler cacg/cahg/cahj cassette air ...