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User manual
Hydrobox module AQMS80X1i
EN
PART 2. INSTALLATION MANUAL
7.3.2. Interface Description
Weak load interface
Code
Part name
TW_O
Temperature sensor for exchanger outlet water
TW_I
Temperature sensor for exchanger inlet water
TR_O
Temperature sensor for refrigerant gas
TR_I
Temperature sensor for refrigerant liquid
TW1
Temperature sensor for outlet water of hydraulic module
Tk
Temperature sensor for water of water tank
TH
Temperature sensor for return water
TW1B
Temperature sensor for total outlet water
Sv2
2-way valve
Sv3_1,SV3_2 3-way valve
AHS
Control signal of assistant heat source
Pumpo
Pump
PumpT
Pump for return water/pump for mixing water
K_heater2
Control signal of water tank heater
RY2,RY4
Relay
Engineering load control interface
Code
Part name
SV2
2-way valve
Sv3_1,SV3_2 3-way valve
AHS
Control signal of assistant heat source
Pumpo
Pump
PumpT
Pump for return water/pump for mixing water
K_heater2
Control signal of water tank heater
RY2,RY4
Relay
1. The output of the mainboard engineering load control interface is a strong electric signal, so it must be
powered off.
2. The engineering load control interface is only used as a signal output. The total output current of the
mainboard cannot exceed 2.5A, otherwise it will cause overload and damage the machine.
3. Please connect the engineering load in strict accordance with the wiring diagram. The excessive load power
needs to be controlled by the AC contactor. AHS and K_heater2 must pass the AC CONTACTOR control.
4. The connection and installation of external engineering loads must be well protected, such as earthed
effectively, air switch and residual current operated circuit-breakers.
The installation of engineering load shall be installed in strict accordance with the instruction manual of the
load and control components and local regulations.