Panasonic Optional PCB Installation Manual
Model: CZ-NS4P
Safety Precautions
General Safety
[Prohibited] Symbol with white background denotes item that is PROHIBITED from doing.
[Required] Symbol with dark background denotes item that must be carried out.
[Warning] This indication shows the possibility of causing death or serious injury.
[Caution] This indication shows the possibility of causing injury or damage to properties only.
Read the following "SAFETY PRECAUTIONS" carefully before installation. Electrical work must be installed by a licensed electrician. The caution items stated here must be followed because these important contents are related to safety. The meaning of each indication used is as below. Incorrect installation due to ignoring of the instruction will cause harm or damage, and the seriousness is classified by the following indications.
Carry out test run to confirm that no abnormality occurs after the installation. Then, explain to user the operation, care and maintenance as stated in instructions. Please remind the customer to keep the operating instructions for future reference.
Specific Warnings
[Warning] 1) Be sure to turn off all power supply before installing and connecting the Optional PCB. Otherwise, it will cause electrical shock.
[Warning] 2) Engage authorized dealer or specialist for installation. Defective installation will cause electrical shock or fire.
[Warning] 3) Strictly follow this installation instruction when doing installation work. Defective installation will cause electrical shock or fire.
[Warning] 4) Use the attached accessories parts and specified parts for installation. Otherwise, it will cause electrical shock or fire.
[Warning] 5) For electrical work, follow local national wiring standard, regulation and this installation instruction. Otherwise, it will cause electrical shock or fire.
[Warning] 6) Wire routing must be properly arranged so that control board cover is fixed properly. If control board cover is not fixed properly, it will cause electrical shock or fire.
[Warning] 7) Do not modify the length of Optional PCB lead wires. Otherwise, it will cause abnormal operation, electrical shock or fire.
[Warning] 8) Do not touch the Optional PCB once the power supply is turn on. Accidental contact with the Optional PCB will cause electrical shock.
Optional PCB Installation
Preparation: Removing Exterior Chassis
[Warning] Be sure to switch off all the power supply (i.e. indoor power supply, heater power supply, boiler tank power supply) before performing the steps below to avoid electrical shocks, etc.
Step 1: Removal of the Cabinet Front Plate
Please follow the steps below for take out front plate. Before removing the front plate of indoor unit, always switch off all power supply (i.e, indoor unit power supply, heater power supply and Tank Unit power supply).
1. Remove the 2 mounting screws which located at bottom of the front plate.
2. Gently pull the lower section of the front plate towards you to remove the front plate from left and right hooks.
3. Hold the left edge and right edge of front plate to lift up front plate from hooks.
Diagram shows the front plate of the indoor unit. Two screws are indicated at the bottom. The plate is shown being pulled forward and then lifted off hooks on the sides.
Step 2: Open the Control Board Cover
Please follow the steps below to open control board cover. Before opening the control board cover of indoor unit, always switch off all power supply (i.e. indoor unit power supply, heater power supply and Tank Unit power supply).
1. Remove the 6 mounting screws at the control board cover.
2. Swing the control board cover to the right hand side.
Diagram shows the control board cover. Six mounting screws are indicated. The cover is shown being swung open to the right.
[Caution] Diagram shows a hand reaching into an open panel with a warning symbol.
Installing the Optional PCB
Step 3: Installing the Optional PCB 1 onto the Control Board
1. Refer to the figures below, tighten Holder 4 and Holder 5 onto the control board with Screw 6.
2. Fix the Spacer (2) and Spacer 13 onto the control board. Then fix and push to hook the Optional PCB onto the Spacer 2 and Spacer 3.
Diagram shows the control board. Holders (part 4 and 5) are secured to the control board using screws (part 6). Spacers (part 2 and 3) are then attached, and the Optional PCB (part 1) is clipped onto these spacers. The diagram also lists the quantities for each component.
| No. | Accessory Part | Qty. |
|---|---|---|
| 1 | Optional PCB (CZ-NS4P) | 1 |
| 4 | Holder | 5 |
| 5 | Holder | 5 |
| 2 | Spacer | 5 |
| 3 | Spacer | 5 |
| 6 | Screw | 10 |
Electric Circuit
A detailed schematic illustrates the electrical connections. It shows the Main PCB and the Optional PCB (CZ-NS4P). Various terminals and connectors are labeled, including ROOM THERMO 1/2, MIXING VALVE 1/2, POOL WATER PUMP, SOLAR WATER PUMP, ERROR SIGNAL, CM-COMM SIGNAL, SYSTEM DETECTION, CN-PWR202, MAIN PCB, CIRCUIT, ACN (MNT), ALL BLO, CS-PWR BUKI, ON-PARI, CPWR, WATER PUMP, ZONE 1, WATER PUMP, ZONE 2, CN295, CN204, CN200, CN206, SENSOR, SOLAR TEMP SENSOR, DEMAND, ZONE 1 WATER TEMP, ZONE 2 WATER TEMP, POOL TEMP. SENSOR, BUFFER TANK, ZONE 1 ROOM TEMP, ZONE 2 ROOM TEMP, VOG BITZ BITI, SG SIGNAL, COMP.SW, SWITCH, HEAT/COOL, EXTERNAL, REMARKS. Wire color codes (WHITE, RED, BLUE, BLACK) are also specified.
Water Circuit and System Installation
Functions available through Optional PCB (CZ-NS4P) connection:
- 2-zone control
- Pool
- Buffer tank
- Solar
- External error signal output
- Demand control
- SG ready
- Stop compressor by external compressor switch
- Switch heating and cooling by external Heat-Cool switch
Note:
Please refer to the Indoor Unit installation manual for water circuit installation details and system setup details.
Recommended Specifications of Field Supply Accessories
| Item | Wired | Wireless | Manufacturer | Model/Specification |
|---|---|---|---|---|
| Room thermostat | PAW-A2W-RTWIRED | PAW-A2W-RTWIRELESS | ||
| Mixing valve | Caleffi | Yonos 25/6 AC230V | ||
| Pump | Wila | |||
| Buffer tank sensor | PAW-A2W-TSBU | |||
| Zone water sensor | PAW-A2W-TSHC | |||
| Zone room sensor | PAW-A2W-TSAT | |||
| Solar sensor | PAW-A2W-TSSO |
Connecting Optional PCB Lead Wires
Step 4: Connecting Optional PCB 1 lead wires to the Main PCB
1. Connect the lead wires from ACN (WHT) & ACL (BLK) (from Optional PCB 1) to CN-PWR (BLK) (from Main PCB).
2. Connect the lead wires from CN-COMM (YLW) (from Optional PCB 1) to CN-CNT (WHT) (from Main PCB).
3. Connect the lead wires from CN-PWR202 (YLW) (from Optional PCB 1) to CN-PWR2 (BLU) (from Main PCB).
4. Connect the lead wires from CN-PWR204 (YLW) (from Optional PCB 1) to CN-PWR4 (BLK) (from Main PCB).
5. Connect the lead wires from DCN (BLU) & DCP (RED) (from Optional PCB) to CN-PWR3 (GRN) (from Main PCB).
Make sure all connections are fixed securely.
Guide all lead wires as shown in the figures below.
Diagram depicts the wiring connections between the Optional PCB 1 and the Main PCB. Specific wire connections are detailed: ACN (WHT) & ACL (BLK) from Optional PCB 1 connect to CN-PWR (BLK) on the Main PCB. CN-COMM (YLW) from Optional PCB 1 connects to CN-CNT (WHT) on the Main PCB. CN-PWR202 (YLW) from Optional PCB 1 connects to CN-PWR2 (BLU) on the Main PCB. CN-PWR204 (YLW) from Optional PCB 1 connects to CN-PWR4 (BLK) on the Main PCB. DCN (BLU) & DCP (RED) from Optional PCB 1 connect to CN-PWR3 (GRN) on the Main PCB. The diagram visually represents these connections, showing the wire colors and connector labels.
