Eco-King HWB-299, Инструкция по установке и обслуживанию

Страница: 36 / 124

E93.1801EN171 HWB installation manual 36
Pump: maximum electrical power
General
- The inrush current of a conventional pump is approximately 2½ x its nominal current.
- The maximum switch current of the PCB is 4 A.
- The total current of pcb and gas valve is approx. 0.5 A. all field supplied pumps and valves for the water heater
loop, DHW, and the system that are connected to the water heater may not exceed 3.5 A. Use separate relays
if higher currents are needed. The fan is separately connected to the main supply and has a fuse of 3.15 A
slow blow.
Pump P1 - water heater pump.
This pump is NOT part of the appliance. The maximum combined current for the water heater loop pump and
any additional pumps and valves may not exceed 2 A.
Pump P2 - calorifier pump.
Pump P2 is a DHW indirect tank pump, meaning it’s not part of the appliance. The maximum combined current for
the indirect tank pump and any additional pumps and valves may not exceed 2 A.
3-way valve.
The combined nominal current of pump P1 and the 3-way valve may not exceed 2 A.
.
Pump P3 - system pump.
The maximum combined current of pump P3 and the other connected pumps may not exceed 2 A.
Warning (ECM pumps):
When using an ECM pump, it cannot be powered directly by the water heater. Use a relay to isolate the water
heater from the pump.
To all outputs following applies: maximum current 2 Amp each output.
Total output of all currents combined maximum 3.5 Amp.
The inrush current of the 3-way valve and/or pumps is maximum 8 Amp.
WARNING : Use an external relay if pump current exceeds 2 A.
NOTICE