Samsung ECO HP User manual

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ECO HP/HR
Quick Reference Guide
Important Notice
This is not a substitute for the installation or service manuals.As new products are released, this list will be changed.
Samsung is in no way responsible for inaccuracies. This document is intended to be used as a reference.

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System Communication Wiring Guide 1
Indoor unit
(F3,F4) or (3,4)
Indoor unit PCB
ODU to IDU
Communications
5vdc
12 vdc
Samsung
accessories
To Controller
485 & 12 Vdc
Outdoor Unit Terminal Block Wired Remote to Indoor Unit
Terminal Block Indoor Unit Terminal Block
F1 F2 V1 V2 F3 F4
F1 F2 –Set Layer:
ODU to IDU
Communications 5vdc
R1 R2 –Control Layer:
Outdoor Unit to DMS
Centralized Control

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Piping Design 2
Standard HP: Y piping for heat pump application Refrigeration piping:
•All piping specifications must be followed to insure that the system will
operate properly.
• Maintain a minimum straight line distance: ≥ 20” before connecting to
a Y-joint.
• Minimum 36” straight line between Y-joints.
▪HR Changer: Mandatory device for indoor unit mode changeover
▪HR Changer is installed as the first device in the refrigerant piping
network. (Heat recovery only)
▪Cool-only indoor unit is connected to the HR Changer low pressure
gas and liquid outgoing pipes.
▪Sub MCU required for additional indoor unit zones after the HR
Changer
Standard HR: Piping for heat recovery application
Sub MCU
HR Changer Cool-only unit
Paired ports
to increase
capacity

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HR & Sub MCU Chart 3
Case Correct installation* Incorrect installation
HR Installation
(HR changer required)
HR Changer Sub MCU
Serial
Installation
HR
Changer Sub MCU Sub
MCU HR Changer
Cooling only
Indoor unit
Installation
Cooling Only
HR
Changer
Sub MCU
Cooling Only
HR Changer Sub MCU
Parallel
Installation
HR Changer Sub MCU
HR Changer Sub MCU
Sub MCU
HR Changer
*Refrigerant supply pipes to HR changer can only enter on one dedicated side of the HR Changer. The images above are for simple explanation only. Refer to
the HR changer installation manual for full details.

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Note: Power must be off, complete prior to auto addressing
Pairing DIP
switch No.
ON
(Individual
setting)
OFF
(Paired setting)
1 A & B not paired A & B paired
2 C & D not paired C & D paired
3 E & F not paired E & F paired
4 N/A N/A
Port assign DIP switch
No. ON (Port Used) OFF (Port not used)
1 Port A used Port A not used
2 Port B used Port B not used
3 Port C used Port C not used
4 Port D used Port D not used
Second DIP switch bank
1 Port E used Port E not used
2 Port F used Port F not used
Use the rotary dial to give
each MCU its own
individual address
10’s
1’s
MCU Settings (HR changer & Sub changer) 4
F E D C B A
Below: Port Use Selection Dip Switch Settings..
Capacity per port (≤19 MBtu)
MCU
address
setting
rotary’s
A B C D E F
Below: Port Paring Dip Switch Settings

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Indoor unit quantity
Rotary Dial.
Outdoor unit option
settings-
-DIP switches.
Commissioning & Service modes
K1 K2 K3 K4 Tactile switches Outdoor unit option set, Indoor unit quantity set
Commissioning & Service modes. K1 K2 K3 K4 Tactile switches
System PCB Identification 5
36, 48, & 53 MBtu/h Heat Pump Models 60 MBtu/h HP Model –All HR Models

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Set the quantity of indoor units from rotary switches: SW51 & SW52
With system powered off:
▪Set the connected indoor unit quantity on the ODU PCB
▪When the ODU is powered up:
▪The system will automatically address the IDU’s
▪Option: Manual addressing –remote controller or SNET Pro 2
SW51:10’s SW52:1’s
36, 48 & 53 Btu HP Initial System Settings 6

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36, 48 & 53 Btu HP Initial System Settings 7
Switch Position Function
K6 ON Snow prevention (Used) Default
OFF Snow prevention (Not used)
K7 & K8
ON ON (Target evap temp) 7-9 ⁰C / 44.6-48.2 ⁰F Default
ON OFF 5-7 ⁰C / 41-44.6 ⁰F
OFF ON 9-11 ⁰C / 48.2-51.8 ⁰F
OFF OFF 10-12 ⁰C / 50-53.6 ⁰F
K9 & K10
ON ON Night quiet mode not used Default
ON OFF Step –1
OFF ON Step –2
OFF OFF Step - 3

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36, 48 & 53 Btu HP Initial System Settings 8
Switch Position Function
K11 & K12
ON ON Capacity correction heating Default
ON OFF Default –28.4 psi
OFF ON Default –14.2 psi
OFF OFF Default + 14.2 psi
K13 & K14
ON ON 3 ton Default 4 + ton Default
ON OFF Max current (–) 4(A) Max current (–) 2A)
OFF ON Max current (–) 6(A) Max current (–) 4(A)
OFF OFF Max current (–) 8(A) Max current (–) 6(A)
K15 & K16
ON ON MID Default
ON OFF MID
OFF ON LOW1 (Humidity)
OFF OFF LOW2 (Humidity)

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36,48&53 MBtu/h HP models
▪Defrost mode can start after 30 minutes of heat operation run time, and the suction temperature at the outdoor unit heat exchanger is less than
23°F, or there is a significant temperature difference between the heat exchanger suction gas and ambient.
▪For installations with high humidity which creates too many defrost cycles, defrost interval can be changed to LOW1 or LOW2 (K5 K6)
▪Heating capacity is reduced in this operation
Outdoor Unit Option Settings –Defrost Interval Adjustment 9
Switch Position Function
K15 & K16
ON ON Humidity MID1 Default
ON OFF Humidity MID2
OFF ON Humidity LOW1
OFF OFF Humidity LOW2