Find the cooling/heating load capacity of the space where the unit will be in service. Select matched WMMS
units for the space. Under sizing or over sizing equipment is NOT recommended.
Mini Split Wall Mount Systems come with three types: cooling only and heat pump and heat pump with electric
heater. These units can be easily wired. Either indoor unit or outdoor unit can be used with any matched
comparable outdoor unit or indoor unit as long as they have matched size and control. Must refer to electrician
before doing so.
Each system is fully tested per rigorous standards at factory. Acoustically and thermally balanced design and
systematically optimized system give each unit a healthy birth off the assembly line with proved quality and
reliability.
Since outdoor units can be installed on the wall or balcony, where is close to indoor unit, at least the following
benefits will be brought to contractors and customers:
* Indoor unit operates much quieter than air diffuser of central air conditioning system.
* Stylish design of indoor unit adds beauty to rooms.
* Connection pipe, refrigerant usage is much saved compared to installing up-flow condensing units on the
ground and long copper/wire lines needed between indoor and outdoor units.
* Contractor work is eased and time is saved.
* Efficiency and lifetime of system is increased.
IMPORTANT NOTES:
1) Working temperature ranges listed above are designed for units to work properly, though these temperature
ranges are conservative.
2) Units may still work well out of the guaranteed working temperature ranges, as long as they are installed
properly and are still in good conditions within design envelope.
3) Units are designed for mild low temperature AC cooling applications. Units come with low temperature control
o
to protect agent too low pressure when running for AC cooling in weather colder than 45 F and warmer than
o
35 F. In this temperature ranges, units may not need to add refrigerant and/or jumper at low pressure switch.
o
If units are to be used for cooling only below 35 F, then better to check and add refrigerant and jumper at low
pressure switch. Situation varies upon indoor load and indoor unit installation conditions such as TEX type,
elevation vs outdoor unit, copper line set size and length, refrigerant level and leakage level.
o
4) Units may still work HP heating well way below 17 F, though exact temperatures are not listed. Units will
defrost during HP heating model in cold weather. Suction (bigger) pipe should be hot and the discharge
(smaller) pipe should be warm at outdoor unit during HP heating mode, if everything is right.
6) Optional component Wind Baffle installed at fan discharge side on the cabinet is designed to keep from cold
air blowing into propeller fan blade against airflow, and so help unit work better in both AC cooling and HP
heating mode in colder weather ranges.
IMPORTANT NOTES FOR UNIT OPERATION ABMIENT & SIZING
Too Cold
Not Cold
Too Hot
Not Hot
5) In low temperature ranges, it is always reeommended to add one low ambient comtroller to the outdoor unit.
Recommended model is ICM 326HN. Following the low ambient control manufacturer for proper wiring and
set-up.
IMPORTANT NOTES
These precautions are essential and must be strictly observed.
DO NOT
pull on the power cord or refrigeration lines.
Install them in a secured position. A line set plastic
cover is recommended.
DO NOT
install the unit in places where there is
exposure to flammable materials or gas leakage.
DO NOT
use wire or circuit breakers that do not meet
electrical safety standards. Several circuits cannot
be connected to one breaker.
DO NOT
wire or open the unit while it is running.
Make sure to shut off all circuits prior to inspecting or
servicing the unit.
DO NOT
install unit in a damp laundry room or near
flammable gas. All units must be protected by
certified electrical circuit breakers and in accordance
with all safety codes.
DO NOT
use the unit in cool or dry mode for
prolonged periods where humidity is higher than 80%.
SAFETY WARNINGS
READ THESE SAFETY WARNINGS COMPLETELY PRIOR TO ANY USE.
DO NOT
install the indoor unit close to cooking
surfaces or ventilation systems. Poor placement
could inhibit peak performance.
DO NOT
blow cold air directly towards people for
extended periods. It may get you a bad cold.
DO NOT
use chemical solvents, flammable
insecticides, or abrasive materials. Clean the unit
only with a soft dry cloth or rag.
DO NOT
continue to operate the unit if there is any
abnormal odor, burning, scorching, or smoke. Stop
and disconnect the unit immediately.
DO NOT
use the system for anything other than what
it was designed for or any non-HVAC purposes. Do
not store near food, paint, or other chemicals.
DO NOT
operate the unit for prolonged periods
without refreshing ambient air. Opening a door or
window periodically will suffice.
DO NOT
draw on the power cord or refrigeration
lines. Install them in secured positions. Plastic
cover of line set is recommended.
DO NOT
blow the cold air directly towards people
for prolonged period. Otherwise, people may get
cold.
DO NOT
use smaller than enough wires. Do not
put several circuits to one breaker. Don't use
smaller than enough circuit breakers. Otherwise
power failure or fire may be caused.
DO NOT
wire or open unit while unit is running.
Sparks or fire may occur. It may cause a shock to
people.
Ground connection
Forbidden
Disconnect the plug
Imperative
MUST READ
MUST READ
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YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
