ITS Telecom ITS-17VD, Installation Instructions Manual

Page: 10 / 20

（ -5）
set the water temperature set the water temperature
ON
water temperature
OFF
7
Operation procedure of heating: start the machine the unit water pump operates water flow switch
test the fan operates the compressor operates (when it shuts off at low water level, the water supply
electromagnetic valve will be open to supply water).
Operation control:
◎
◎
The pre-operation of the unit must be performed by professional technicians!
◎
◎
◎
When the whole system is checked and proves to meet the requirements, pre- operation can be started.
Switch on to start the heat pump, and compressor will start automatically in 3 minutes. For three-
phased power supply unit, check first whether the phases are in right order. Measure the running
current of the compressor to see whether there is anything abnormal.
At least have heat pump running for 3 days for the pre-operation.
◎
◎
◎
◎
◎
The water leak pipe or water overflow pipe should be installed near the drainage channel or vent to
facilitate water discharge.
Water leak valve should be installed in the water leak pipe.
Before the electromotive electromagnetic valve in system pipeline, a check valve should be installed
for future check.
The customer's water pressure should be lower than 0.6MPa.
ll the pipelines should use metallic pipes (such as stainless steel, steel pipes with plastic or stainless
steel linings, or thin-wall copper pipe). If plastic pipes are used (such as PP-R pipe and ABS pipe) the
expansion and contraction of the pipes
between mainframe and water tank should be taken into account.
In winter, system water supply valve and break valve should be protected against the cold (based on
winter temperatures
in local area) in case the water supply pipe and valve should be frozen to break in winter.
4.4. Pipeline connection
4.6. Normal operation
4.5. Pre-operation