– 21 –
Split Inverter Air-to-Water Heat Pump
The RS485 Communication Cable shall be separated from any line voltage conductors. It shall be installed to protect from weather or
fraying during installation.
Figure 3.14
Outdoor Unit
Indoor Unit
Refer to wiring diagram for internal connections
.
Figure 3.15
Electrical Installation
36
Installation Instructions
A: Conductor (twisted tinned copper wire, with a cross-sectional area of at least
0.5mm or 20AWG);
B: Insulator;
C: The shielding layer (shielding ratio by winding or braiding of twisted tinned
copper wire is at least 95% or more); select the network connection wire
where the shielding layer is tight and the wire twisting distance is small as
much as possible;
D: Outer sheath (PVC).
The control line must be separated from the strong electricity and keep a
distance more than 20cm;
The length of control line should not exceed 200m.
（
3
）
Indoor and outdoor units wiring diagram
：
Electrical
box
Electrical box
开关
Power
cable
Model
：
P10(O)
Communication
cable
Model
：
P10(I)
Electrical
box
Electrical box
开关
Communication cable
Model
：
P15(O)/P17(O)
Model
：
P15(I)/P17(I)
Internal wiring of the unit is based on the circuit wiring diagram.
The electrical loads given in the Specification Table, allow for a pump load of no more than 5 amps at 110 VAC (2.5 amps at 230 VAC).
If the pump load exceeds this, provide a separate power source to the pump. DO NOT feed power to the pump from the SpacePak
air handler panel.
SIS Control Wiring Connection
The SpacePak SIS requires a dry contact (relay) signal to enable and select between heating and cooling modes. They will not
operate on the 24V signals from typical thermostats or air handlers. Connecting 24V to either of these points will result in significant
component damage.
• Connect multiple zone system to heat pump using SpacePak SSIC Control Module and instructions included with it. Refer to
manual supplied with SSIC Control Module for connection and operational details.
• See wiring diagram for heat pump electrical diagram.