Gree GRS-1.5/TD150ANbA-K - Page 52

GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL
50
(3) If the unit will not be used for a long period, power off the unit and drain the water in the water tank
and pipe through the drain valve.
Drain the water by following the steps below:
Turn off the water inlet cut-off valve of the water tank. Turn on the water outlet cut-off valve and the
hot water tap or shower head on the user’s side. Last, turn on the cut-off valve at the drain outlet.
If the unit needs to be used after water drainage, fill the water tank fully with water before starting the
unit. For details, see the description on air exhaust for the water pipeline during unit commissioning.
4.4 Commissioning Completed
Running Parameters for Commissioning of Household Air Source Water Heaters
Project name:
Unit model:
Commissioning performed
by:
Water tank
model:
Rated capacity of the
outdoor unit (kW)
Capacity of the
water tank
Date
Maximum drop between the
outdoor unit and water tank
(m)
Length of system pipe
Commissioning status: □ Heat up
Status Parameter
Unit
Before Startup
30 minutes
Status parameters of the
outdoor unit
Outdoor ambient
temperature
°C
Power supply voltage
V
Air intake temperature
°C
Air exhaust temperature
°C
Parameters of the water
tank
Temperature of the
temperature sensor for
water outlet pipe
°C
Temperature of the
water temperature
sensor
°C
Summary
4.5 Reference Value for Judging Running Parameters of the Unit
(Commissioning Inspection)
After the ON/OFF button is pressed for a while, the wired controller displays the heat up icon. The fan
and compressor run properly and the unit runs stably without obvious shake and noise. During heat up,
the water temperature displayed on the wired controller increase gradually. After the unit runs properly for
at least 30 minutes, it can be delivered to the user.