1. 13 SEER Ductless Mini Splits
Product, Applications, Installation
& Troubleshooting
2009
QUI-QSMSPAL-002

2. Basic Mini Split Applications
Computer or Data Rooms
Commercial Spaces e.g. Offices, Shops, Churches and Eating/Drinking establishments
Residential
All 3 have different rules of thumb when it comes to sizing and also the accessories needed for proper operation, but the general rule of SIZE THE UNIT TO THE ROOM must be used. For specific applications always use a Manual J

3. Computer/Data Rooms Basic Rule of thumb Sizing :
250 to 275 sqft per 12,000 Btu/h
24/7 operation 365 Days a year
MUST install an ICM low ambient controller and a crankcase heater
Must keep Air Filters clean as the unit could freeze up if the filters are not cleaned monthly

4. Commercial Installations
Basic Rule of Thumb Sizing :
400 to 450 sqft per 12,000 Btu/h
May be in cooling operation 365 Days a year
If this is the case we MUST install an ICM low ambient controller and a crankcase heater
Make sure line set lengths are kept below the maximum line set length stated

5. Residential Installations
Basic Rule of Thumb Sizing : 550 to 600 sqft per 12,000 Btu/h
Keep the Indoor unit a minimum of 4ft from the floor with no obstacles within 15ft in front of the unit for the 9/12k and 25ft for the 18/24k units
Master Bedrooms to save energy or have a different temperature
FROG’s or Bonus Rooms where ductwork can’t reach

6. Installation and Operation

7. Requirements before Installation
Correctly sized Indoor/Outdoor Units, they must be a matched pair
Correctly sized breaker/disconnect
Line set, with both pipes insulated
Electrical Interconnect wire – must be a minimum of 14 AWG
5/16” Gauge adaptor for R410A gauges
Small Electrical screwdriver for terminal connections
Low Ambient Control and crankcase heater if the application requires cooling below 65 DegF
Reading the Installation and Operation manual

8. Locating Indoor Unit
Install Indoor unit so it can deliver air into the room and return it to the unit, no obstacles to airflow within 10ft of the unit
Must be a minimum of 5ft from the floor
DO NOT THINK OF THIS AS A PTAC
If installing multiple units allow a minimum of 15ft on center between Indoor units on the same wall

9. Indoor Unit Installation
Remove the plate from the rear of the unit, it is held on by a Philips head screw
Mount the plate on the wall, make sure the plate is level, bend the mounting tabs out slightly to ease unit mounting
Using the Templates provide, locate and drill a Ø3” hole at an angle of 5° downward towards the outside of the building to allow the line set and condensate hose to reach the outside

10. Indoor Unit Installation
Rotate the pipes and tape the condensate hose to the pipe – hose must be at the
bottom – I like to also add the interconnect wiring at this point to save time and effort trying to thread the wire through the wall hole with the unit in place
If a Romex connection for electrical is required to satisfy local codes a ½” connector is provided on the rear of the unit
On Heat Pump units the condenser coil sensor must be connected to the Outdoor unit so run that along with the refrigerant piping and interconnect wiring

11. With Indoor unit mounted
The refrigerant pipes can now be carefully bent to the required angle – Suction line has corrugations to prevent kinking
Condensate hose can be run to outside or to building drain – always use rigid piping
Connection from unit fits a ¾” OD, 5/8” ID Vinyl PVC hose perfectly

12. Install the Outdoor unit
Ensure unit is not exposed to high winds – possible wind baffle required
Raise Heat Pump units at least 4” from ground or pad to help draining during defrost
Outdoor unit provides power for Indoor unit so a local disconnect will be required

13. Refrigerant Line Sets Unit Sizes Max Length & lift
QSCE/HE09 ¼” & ½” 50ft inc 20ft lift
QSCE/HE12 ¼” & ½” 50ft inc 20ft lift
QSCE/HE18 3/8” & 5/8” 50ft inc 20ft lift
QSCE/HE24 3/8” & 5/8” 50ft inc 20ft lift
Lengths include all fittings and bends etc
DO NOT UPSIZE LINE SETS
BOTH LINES MUST BE INSULATED
NO FILTER DRIERS OR SIGHT GLASSES

14. Line Set Connections
Keep both ends of the line set sealed until it is time to connect
Flare connections at both units – we do not recommend brazing
Adding a little vacuum pump oil on flare nut threads helps get them started
Always use 2 wrenches to prevent kinking
Currently units are not supplied with flare nuts unless our line sets are used

15. Leak Test & Evacuation
Gauge connections on the Schrader's are 5/16” not ¼” to prevent confusion – Adaptors Yellow Jacket # are required
Once line set is connected at both ends leak check with dry nitrogen
Do not let line set sit open to atmosphere place on vacuum ASAP
Vacuum down to a minimum of 200 microns to ensure all moisture is removed
Double evacuation, with a break using dry Nitrogen is recommended for full system cleanliness

16. Refrigerant Charging
Always open Suction valve first – uses a 6mm Hex wrench, then open “Liquid” valve with a 5mm Hex wrench
Doing this can prevent the Cap Tube, located behind the “liquid” line service valve becoming oil logged, putting the unit into a vacuum on initial start up

17. ADDITIONAL R410A MUST BE WEIGHED IN USING A DIGITAL SCALE
Refrigerant Charging
Units are charged for line sets of 25ft as standard
QSCE/HE 09/12 Add 0.2oz/ft over 25ft
QSCE/HE 18/24 Add 0.5oz/ft over 25ft
UNIT LINE SET RUN
<25’ 30’ 35’ 40’ 45’ 50’
QSCE/HE 09/
QSCE/HE 18/
ADDITIONAL R410A MUST BE WEIGHED IN USING A DIGITAL SCALE

18. Electrical - General Control Voltage is always Line Voltage
Use a minimum of 14AWG to connect Outdoor unit to Indoor unit
Up to 6 Interconnect wires are required depending on the unit model, 3 Power and 3 Control, don’t forget to connect the Heat Pump defrost sensor
Never install a local disconnect at the Indoor unit or any J boxes in between the Outdoor & Indoor

19. Electrical Stage I
Power the Outdoor unit from the local breaker & disconnect
QSCE/HE V 15A
QSCE/HE V 15A
QSCE/HE /230V 20A
QSCE/HE /230V 25A
Tip – To connect the whip liquid tight connection take the bottom plate off first and connect it off the unit

20. Electrical Stage II
Outdoor unit MUST provide power for the Indoor unit
Either L1 or L3 ON THE OUTDOOR UNIT MUST BE WIRED TO L1 or L3 ON THE INDOOR UNIT
Either N1 or L4 ON THE OUTDOOR UNIT MUST BE WIRED TO N1 or L4 ON THE INDOOR UNIT
Polarity is EXTREMELY important with these units

21. Electrical Stage III
If unit is a Heat Pump don’t forget to connect the Defrost Sensor between the Indoor and Outdoor units
(Extend with 18AWG if necessary, 25ft of wire is provided)
To locate connector inside the Outdoor unit will require removal of top panel
Unit will not operate in Heat Pump mode without this wire being connected – will show an error code – 7 Blinks

22. Installing Low Ambient controls
Low Ambient Control ICM326H
Crankcase Heater (Mars or Raychem) – wire this directly to the line voltage connections – 115V for QSCE/HE 09/12 and 208/230V for QSCE/HE 18/24

23. Installing the ICM 326H Fan Motor is Ball Bearing
Temperature Probe should be mounted on a 100 DegF return bend on the condenser coil – this is typically 3 to 4 return bends down from the top of the condenser coil
Set cut out speed to middle of setting
Wiring – See the diagrams in the Quietside 107
Line voltage from common tap to the motor to the Line 1 connector
Cut speed tap to the motor and run it through the ICM – Line 2 and Motor 2
Set Up controller
Cut Out Speed – halfway into the ball bearing range
Hard Start – halfway into the ball bearing range

26. Data Room or do you still want Cooling below 32 DegF?
Wind Baffles
Make your own, using our specifications and dimensions
Install both on Front and Rear of condensing unit for those windy locations and extreme cold
Allows Cooling operation down to 0 DegF

27. Unit Start up
On initial power up of the unit, it will immediately start the Outdoor unit in the cooling mode
Do not power the system until it is ready to be started
Use the remote control to put the unit into the required modes to test operation
In Heat Pump mode the Indoor fan will run for 12 seconds to sense air temperature and then stop until Indoor coil temperature reaches 98 DegF
3 Minute Anti Short Cycle Timer built into the system, along with Auto restart after a power failure

28. Control Modes Auto, Cool, Heat, Dry and Fan Modes
Unit has a 24hr clock for the timer function, this allows a SINGLE event (On/Off) to be programmed for a certain time, for repeating events unit must be reprogrammed – Note 12pm/am actually is 0 hour
3 minute time delay between compressor starts unless the unit is shut down, then the unit will start immediately

29. Control Modes Auto, Cool, Heat, Dry and Fan Modes
Auto – Basic set temp is 74 DegF, unit chooses mode and fan speed based on room temp
Cool – User set temp & fan speed, unit controls to -2 DegF from room temp
Heat - User set temp & fan speed, unit controls to + 2 DegF on room temp
Dry – User set temp, fan speed unit set to low
Fan – Fan operation only, user sets fan speed, no cooling or heating function

30. Std Operating Pressures/Temps
Cooling Mode (80/67 & 95°F)
QSCE/QSHE 09/12/18/24
Suction Psig : 115psig = 37°F
Superheat : 8°F
Indoor Temp Split 30-35°F
Heating Mode (70°F & 47°F)
Liquid Psig : 400psig = 117°F
Temp Split Indoor : 30°F

31. Troubleshooting Indoor unit has 5 Troubleshooting codes and 2
operational codes
Blinking once : Initial start up in H/P mode
Blinking Twice : Room Temp Sensor failure
Blinking 3 times : Coil Temp Sensor failure
Blinking 4 times : Outdoor unit error
Blinking 5 times : Freeze protection
Blinking 7 times : Outdoor sensor failure/not connected (Heat Pump only)
Constant Blinking : Defrosting

32. Fault codes in detail
Initial start up in H/P mode – Indoor coil temperature has not reached 98 DegF when first started in the Heat Pump mode
Room Temp Sensor failure – Unit cannot read the resistance of the Room temperature sensor
Check the sensor connections and resistance
60 DegF = 7,000Ω
70 DegF = 5,700Ω
80 DegF = 4,700Ω

33. Fault codes in detail
Indoor Coil Temp Sensor failure – Unit cannot read the resistance of the Room temperature sensor
Check the sensor connections and resistance
30 DegF = 14,000Ω
40 DegF = 11,000Ω
50 DegF = 8,800Ω
Outdoor unit error – After the compressor has been running for a period of 5 minutes, if the Indoor coil temperature does not show the expected change in temperature, in cooling the temp should be below 77 DegF, in Heating coil temp should be above 86 DegF
Check compressor operation, refrigerant flow

34. Fault codes in detail
Freeze Protection – If the Indoor coil temperature is below 32 DegF after 10 minutes of compressor operation or is below 5 DegF after 5 minutes of compressor operation the unit will shut down
Check refrigerant charge, filter condition, Indoor airflow
Defrost Sensor Error – Heat Pump units must have the Defrost sensor connected between the Outdoor and Indoor units, otherwise it will not operate in Heat Pump mode
Unit will run in Cooling mode but will immediately error out if switched into heating
Check the sensor resistance and connections between the units

35. Fault codes in detail
Defrost – Defrost operation is based on a combination of several factors
If the Compressor has been running for 45 minutes total, Outdoor coil temperature is below 23 DegF for at least 1 minute and the compressor has been on for 3 minutes continuously the unit will enter defrost
If the Unit has been in operation for 30 minutes before being turned into Heat Pump mode it will enter defrost
If the Outdoor coil temp is below 28 DegF when the unit is turned on in Heat Pump mode it will enter defrost
A defrost cycle will last a maximum of 8 minutes or the time taken for the Outdoor coil to reach a temperature of 59 DegF

36. Other Troubleshooting
Voltages can be measured from either L1, N1 or L3, L4 to 1, 2, and 3 to determine if compressor, Outdoor Fan and Reversing Valve are being called for
Check for the signal at both the Indoor and Outdoor units

37. Other Troubleshooting
No Heat Pump Heating
Check that the unit is actually in the Heat Pump Mode Sun = Heat Pump
What looks like a Flame is actually a drip, putting the unit in de-humidification mode which is cooling with a low fan speed
Check output for the 4 way valve energized for heating will default into the cooling mode, line voltage at #2 terminal, follow down to the solenoid coil

38. Troubleshooting during operation
No PCB Output
Check for line voltage at Power terminals
Remove interconnecting wires, check for outputs in cooling in heating mode
Check terminals, down to ground?
Check for operation lights on the units
Check fuse on PCB – 250V, Radio Shack #
Check molex plug connections on PCB
Check PCB receives signal from remote

39. Dual Zone Specifics

40. Dual Zone Refrigerant Lines
Unit Sizes Max Length & lift
QSIHD09 ¼” & 3/8” 50ft inc 20ft lift
QSIHD09 ¼” & 3/8” 50ft inc 20ft lift
QSIHD12 ¼” & ½” 50ft inc 20ft lift
QSIHD12 ¼” & ½” 50ft inc 20ft lift
Lengths include all fittings and bends etc
DO NOT UPSIZE LINE SETS
BOTH LINES MUST BE INSULATED
NO FILTER DRIERS OR SIGHT GLASSES

41. Dual Zone Connections 18k unit has dual service valves
Unit A on top, Unit B below
EEV’s are before the service valves
18k has normal service valve connections, the 24k unit has manifold style connections with a single set of service valves where the contractor puts his gauges on

42. Dual Zone Connections
24k system uses a manifold style connection with a single set of service valves
Unit A is top set, Unit B is the bottom set
EEV’s are after the service valves
24k
18k has normal service valve connections, the 24k unit has manifold style connections with a single set of service valves where the contractor puts his gauges on
24k

43. Leak Test & Evacuation
Gauge connections on the Schrader's are 5/16” not ¼” to prevent confusion – Adaptors Yellow Jacket # are required
Once line set is connected at both ends leak check with dry nitrogen
Do not let line set sit open to atmosphere place on vacuum ASAP
Vacuum down to a minimum of 200 microns to ensure all moisture is removed
Double evacuation, with a break using dry Nitrogen is recommended for full system cleanliness

44. ADDITIONAL R410A MUST BE WEIGHED IN USING A DIGITAL SCALE
Dual Zone Refrigerant Charging
Units are charged for line sets of 25ft as standard
QSIHD 09 Add 0.3oz/ft over 25ft
QSIHD 12 Add 0.3oz/ft over 25ft
UNIT LINE SET RUN
<25’ 30’ 35’ 40’ 45’ 50’
QSIHD
QSIHD
ADDITIONAL R410A MUST BE WEIGHED IN USING A DIGITAL SCALE

45. Dual Zone Electrical
SINGLE wire low voltage communication signal between Indoor units and Outdoor units
Separation required to the high voltage power wiring
14AWG Power wires, Communication wire can be minimum 16AWG
Do not ground Indoor units or shield communication wires
Control is via a 36V DC single wire connection – we recommend 16 AWG shielded wire and separation from the mains power wiring
Fault codes are displayed on the Indoor unit PCB’s F = Indoor unit fault, P = Outdoor unit fault

46. Maintenance QSCE & QSHE
Monthly : Large filters must be cleaned
6 monthly : Check indoor fan blade for dust and debris build up, check condensate pan for any debris
Yearly : Clean coils – we recommend soapy water not a harsh acidic type, check both electrical and refrigerant connections for tightness and insulation on the pipes

47. Unit Warranty 5 Years Compressor
1 Year all other parts, including refrigeration system parts
90 Days limited labor from date of start up
All warranties commence on date of installation
Warranty parts are shipped ground on receipt of a completed warranty claim form

48. Literature Support Sales Brochures Engineering Submittals
Installation and Operation Manuals
Quietside Basic Technical
Quietside 107 – Application and Troubleshooting
Quietside Basic Product and Application Power point presentation
Quietside advanced Technical Training for Distributors and Contractors

49. Support Contacts Sales Support Local Representation
Quietside sales staff
Regionalized
Customer Support
Technical Support
East Coast
Denis, Mike, Chris
West Coast
x 3
John, Stu, Kevin

50. Thank you for attending Any Questions??????