Shinhoo GPA-IV Series User manual

GPA-
Ⅳ
Series Energy-saving Pipeline Canned
Motor Pump
Installation and Operation Manual
Hefei Xinhu Canned Motor Pump Co., Ltd

Notes:
1. Read the installation manual carefully before installation and use.
2. The manufacturer will not be liable for any personal injury, pump damage and
other property damage due to failure to comply with contents specified in safety
warning signs.
3. The installers and operators must comply with local safety regulations.
4. The user must confirm that only qualified personnel with professional
certification and proficiency of this manual is allowed to install and maintain this
product.
5. The pump must not be installed in a place that is damp or may be splashed by
water.
6. For convenient access of maintenance, a shut-off valve shall be installed on each
side of inlet and outlet of the pump.
7. The power supply of the pump shall be cut off before installation and
maintenance.
8. For circulation of domestic hot water, copper or stainless steel pump body shall
be used.
9. Heat supply pipelines shall not be frequently filled with non-softened water so as
to avoid increasing calcium in the circulating water inside the pipeline, which
may thus block the impeller.
10. Do not start the pump without pumping liquid.
11. Some models are not suitablefor pumping drinking water.
12. Pumping liquid may be high-temperature and high-pressure; therefore, the liquid
in the system must be completely drained or the shut-off valves on both sides
must be closed before moving and dismantling the pump to prevent burning.
13. If removing the exhaust bolt, high-temperature and high-pressure liquid will be
overflew. Therefore, it is necessary to guarantee that the outflow liquid will not
cause personal injury or damage other parts.
14. Ventilation must be ensured in summer or high ambient temperature period to
avoid condensation that may cause electrical malfunctions.
15. If in winter, the pump system does not work or when the ambient temperature
drops below 0 ℃
, liquid in the p
avoid frost cracking of pump body.
16. If the pump is left unused for a long time, please close the pipe valve in the inlet
and outlet of the pump and cut off the power supply of pump.
17. If the flexible cord of cable is damaged, it must be replaced by a qualified person.
18. Please close the valve at the inlet of the pump and cut off power of the pump
immediately if overheating and abnormality of motor is detected, and contact
your vendor or service center immediately.
19. If trouble cannot be addressed according to the manual, please close the valves on
the inlet and outlet of the pump immediately, cut off power supply of the pump
and contact your vendor or service center immediately.
20. This product shall be put in a place out of reach of children. After installation,

take an isolation measures to avoid access of children.
21. This product shall be stored in a dry, well ventilated and cool place under room
temperature.
Warning
Before installation, you must carefully read the installation
and operation manual. The installation and use of the
equipment must comply with local regulation and applicable
operation standards.
Warning
Those who have weak physical strength, react slowly orlack
experience and knowledge (including children) can use this
motor pump only under the monitoring and direction of
his/her safety personnel.
1.
Signs
Warning
Failure to comply with this safety instruction may lead
to personal injury!
Failure to comply with this safety instruction may lead to
equipment malfunction or damage!
Note or instruction for easy and safe operations
2.
General
2.1
GPA
Ⅳ
series circulating motor pump is mainly used in domestic heating
and water circulation of domestic hot water system.
The product is most applicable to the following systems:
！
Note
！
！
Caution

·stable and variable-flow heat supply system
·variable-temperature pipeline heat supply system
·heat supply system with night mode
·HVAC system
·industrial circulation system
·domestic heating and domestic water supply system
This pump is equipped with permanent-magnet motor and differential pressure
controller, capable of automatically & continuously adjusting motor
performance to meet the actual needs of system.
This pump is equipped with control panel on the front for easy operation by
users.
2.2
Advantages
Easy installation and start-up
·Provided with self-adaptive mode AUTO
(Initial setting). In most cases, the motor pump needs no adjustment and
can be readily started and automatically adjusted to meet the actual needs
of the systems.
High-degree comfort
·Low operational noise of motor pump and whole system
Low energy consumption
·Compared with traditional circulating motor pumps, it has lower energy
consumption. GPA series circulating motor pump is attached with Europe
Energy Label Class A marking, and the minimum energy consumption can
reach up to 5W.
3.
Operating Conditions
3.1
Ambient Temperature

Ambient temperature: 0℃～+40℃
3.2
Relative humidity
（
RH
）
:
Max. humidity: 95%
3.3
Medium (liquid delivery) temperature
To avoid condensation in control box and the stator, the temperature of
liquid pumped by the motor pump must be always higher than ambient
temperature.
3.4
System Pressure
Maximum pressure 1.0Mpa(10bar).
3.5
Degree of Protection
IP42
3.6
Inlet Pressure
To avoid damage to pump bearing due to cavitation noise, the pump
inlet shall maintain the following minimum pressure:
3.7
Pumping Liquid
The pumping liquid includes thin, clean, non-corrosive and non-explosive
liquid which shall not contain any solid particles, fiber or mineral oil, and
the pump must definitely not be used to pump inflammable liquid such as
rapeseed oil and gasoline. If the circulating pump is used in a place with
relatively high viscosity, the pump has lower performance. So when
choosing a pump, the viscosity of liquid must be taken into account.
Liquid
Temperature ＜85℃90℃110℃
Inlet Pressure
0.05bar 0.28bar 1bar
0.5 Head(m) 2.8 Head(m) 10 Head(m)

4.
Installation
4.1
Installation
·When installing GPA series circulating pump, the arrow on motor pump case
indicates the flow direction of liquid through the pump.
·When installing the motor pump in the pipeline, two supplied gaskets must be
installed at the inlet and outlet.
·During the installation, the shaft of motor pump must be horizontal.

4.2
Position of Junction Box
4.3 Changing Position of Junction Box
The junction box can be rotated in a step of 45°。
The procedure for changing the position of junction box are as follows:
1.Close the valves at the inlet and outlet and release the pressure;
2.screw and remove the four socket head screws that fasten the pump body;
3.Rotate the motor to the expected position and align the four screw holes;
4.Install the four socket head screws again and fasten them clockwise;
5.Open the valves at the inlet and outlet.

Warning
Pumping liquid may be high-temperature and high-pressure;
therefore, the liquid in the system must be completely drained or
the valves on both sides of motor pump must be closed before
removing the socket head screws.
When changing the position of junction box, the motor pump
can be started only after the system is filled with pumping liquid
or the valves on both sides of motor pump are opened.
4.4
Thermal Insulation of Motor Pump Body
Limiting the heat loss of motor Pump body and pipeline.
Motor pump body and pipeline should be thermally insulated to reduce their heat
loss.
Do not isolate or cover the junction box and control panel.
！
Caution
Caution
Note

5.
Electrical Connection

Electrical connection and protection shall comply with local codes and norms.
Warning
The motor pump must be earthed .
The motor pump must be connected to an external power switch, and the
minimum space between all the electrodes is 3mm.
·GPA Ⅳseries circulating motor pump needs no protection from
external motor.
· Check if the supply voltage and frequency are the same as
parameters indicated on the nameplate of the motor pump.
·Connect the motor pump and power supply with the plug supplied
together with the pump.
·After the power is supplied, the indicator lamp on the control panel
is ON.
6.
Control Panel
6.1
Controls on Control Panel
Position
Descriptions
1 Flow rate display during the motor pump is running.
2 Gear reduction button.
！

6.2 The showing position of
fault code
Fault Code
Fault Description
Gear light 1 flashing
Over-voltage alarm
Gear light 2 flashing
Under-voltage alarm
Gear light 3 flashing
Over-current alarm
Gear light 4 flashing
Loss-phase alarm
Gear light 5 flashing
Start-up fault, Start-up and run blocked
Gear light 6 flashing
Low-power fault
Gear light 7 flashing
Over-temperature alarm
If malfunction is detected, the power supply must be cut off before
trouble-shooting. After the trouble is addressed, re-connect the power and
start the motor pump.
6.3
Indication Lamp Area of Motor Pump Setting
The GPA Ⅳseries motor pumps have 28 settings and can be selected
at the push of a button.
The motor pump settings are represented by 13 different light
areas.
按钮次数
灯光区域
说明
3 The lighted area showing the four modes of
operation of the motor pump.
4 The setting button
for the motor pump operation
mode.
5 The button to increase gear.
6 The lighted area showing the gear.

Button Count
Light Area
Descriptions
0 AUTO Self- adaptive
1
BL（1-9）
(Proportional
pressure)
Proportional pressure curve
2 HD（1-9）(
Constant
pressure) Constant pressure curve
3 HS（1-9）(
Constant
speed) Constant speed curve
6.4
Button for selecting motor pump settings
By pressing the button once at 2 seconds interval, the motor pump setting
mode will change once.
A cycle is constituted of every four presses on the button. For details, please
refer to Section 6.2.
7.
Motor Pump Setting
7.1
Motor Pump Setting Based on System Type
Initial setting= AUTO (Self-adaptive mode)
Recommended and available motor pump setting

·AUTO (Self Adaptive Mode) mode can adjust the performance of motor
pump based on the actual heat demand of the system. As the performance is
adjusted gradually, it is suggested, before changing motor pump setting, to
maintain AUTO (Automatically Adaptive Mode) mode setting for at least one
week.
·If you select to change back to AUTO (Self Adaptive Mode) mode, the GPA
series motor pump can memorize its last setting in AUTO mode and continue
adjusting the performance automatically.
·It may take several minutes or even hours to reach the optimal operation
mode after motor pump setting is changed from the optimal setting (the
“Recommended abovementioned”) to other optional setting. If the optimal
setting of motor pump fails to enable each room to obtain desired heat
distribution, then you should change the motor pump setting to other settings
·Please refer to Section 12.1 for the relations between motor pump setting and
performance curve.
7.2
Control of Motor Pump
When the motor pump is working, the motor pump is controlled according to
the principle of “Proportional Pressure Control (BL)” or “Constant Pressure
Control (HD)”.
In these two control modes, the motor pump performance and corresponding
power consumption will be regulated according to the heat demand of the
system.
Proportional Pressure Control
In this control mode, the differential pressure of both ends of the motor pump
will be controlled by the flow rate. In the Q/H Figure, proportional pressure
curve is represented with BL(1-9). Please refer to Section 11.3.
Position
System Type
Motor Pump Setting
Recommended
Options
A Underfloor
heating system.
AUTO HD（1-9）
B Dual line
heating system.
AUTO BL（1-9）
C Single line
heating system.
BL1 BL（1-9）

Constant Pressure Control
In this control mode, the differential pressure of both ends of the motor pump
remains constant and is irrelevant to the flow rate. In the Q/H Figure,
constant pressure curve is a horizontal performance curve represented with
HD1(1-9). Please refer to Section 11.3.
PWM Control
PWM Control Curve
PWM Control Principle
1) Control Principle
The pump is controlled by PWM(Pulse Width Modulation) digital signal,
which means that the variance of velocity depends on the external input signal.
The variance of velocity is one of the functions of input control.
2) Digital LV PWM (Pulse Width Modulation) Signal
The frequency of PWM signal is 100Hz～4000Hz；
PWM input signal (PWM IN) is used to give velocity commands, and adjusts
the speed through adjusting PWM duty cycle；
PWM output signal (PWM OUT) is the feedback signal of the pump, and the
PWM frequency is 75Hz.
3) Duty Cycle
d％=t/T
For example：
T = 2 ms（500Hz）
t = 0.6 ms
d%=100%×0.6/2=30%
UiH = 4～24V
UiL ≤ 1V
IiH ≤ 10mA
Variable
Descriptions
T
Cycle

d
Duty Cycle
UiH
Input High Voltage
UiL
Input Low Voltage
IiH
Input Current
“Signal Ref”is a reference grounded, and it is not connected to
protective grounded.
Interface
The pump is controlled by external electrical elements and components
through interfaces. The interfaces convert external signals into signals that
can be recognized by microprocessor in the pump. In addition, when the
pump is supplied with 230V voltage, the interfaces can ensure that users will
not be at risk of high voltage electric shock when contacting the signal cable.
PWM Input Signal
●
In area of high duty-cycle PWM signal, when the input signal fluctuates
in the critical point, there will be a delay area to prevent frequent stop and
start of the pump.
●
In area of low duty-cycle PWM signal, the pump runs at high speed for
the sake of system safety. For instance, when the signal cable of gas boiler
system is damaged, the pump will continue to run at the maximum
rotational speed and transfer heat through main heat exchanger. This is also
applicable to heat pump, ensuring continuous heat transfer in the case of
signal cable of pump is damaged and system safety is guaranteed.
Note

●
When PWM input signal is 0% or 100%, the pump will switch to
non-PWM mode (normal mode), and the default system will have no PWM
signal input.
This system is adaptive to the automatic switching of PWM and non-PWM mode. When
there is PWM signal input, the system will enter PWM mode.
PWM Feedback Signal
PWM feedback signal can provide operation status of the pump, such as power loss or all kinds of
alarm/warning modes.PWM feedback signal will feed back exclusive alarming information. If the
power voltage detects under voltage signal values, its output signal will be set to 75%. Provided
sundries settlement exists in the hydraulic system and causes rotor being blocked, the duty cycle
of output signal is set to 90%, the alarm will be given higher priority.
PWM input signal(%) Pump operation status
0
Pump switches to non-PWM mode and system
acquiesces there is no PWM signal input.
＜10
Pump runs with highest rotation speed.
10～84
Pump rotation speed decreases from highest to
lowest.
85～91
Pump runs with lowest rotation speed.
91～95
Low PWM signal, clocking of the pump is
avoided by a hysteresis function.
96～99
Stand-by, pump stops running.
100
The pump switches to non-PWM mode operation
(normal mode) the system has no PWM signal
input by default.

0~10V Control
0-10V analog control signal description
：
The pump starts to be powered on in the
normal mode (constant speed mode or constant pressure mode or proportional mode
or AUTO mode), and the factory default constant speed mode. Once there is 0~10V
analog voltage input, the pump will enter the 0~10V analog control mode. In this
mode, input different analog voltages, the pump will be in different operating states. If
the cable is broken in this mode, the pump will run at the lowest speed ( The lowest
speed in 0~10V analog control mode). Once the pump enters the 0~10V analog
control mode, it cannot switch to the normal mode. If you want to enter the normal
mode again, you must power on again to enter the normal mode.

 
95 Stand-by The pump stops
90 Pump stops caused by alarm.
Malfunctions (pump blocked).
The pump does not work and will
restart only after trouble is
addressed.
85 Pump stops caused by alarm,
electrical malfunction.
P
ump does not work and will restart
only after trouble is addressed.
75 Alarm.
Pump runs, trouble has been
detected. The trouble/malfunction
is
not critical, and the pump can
still work.
0-70 0-210W（slope 3W/% PWM）

input signal (V) Pump status
U
＜
1V
The pump stops
1V＜U＜3V
The pump runs at the lowest speed (when the
analog voltage signal changes from large to
small, when the voltage value is less than 1V, the
pump stops; >1V, the pump runs at the minimum
speed.
When the voltage sign
al changes from small to
large, when the voltage is less than 2V, the pump
will stop; when it is more than 2V, it will run at
the lowest speed. )
3V
＜
U
＜
10V
Pump at minimum and maximum speed (linear).
8.
Bypass valve system installed between the Inlet pipeline
and return pipeline
8.1 Purposes of bypass valve

Bypass valve
The purpose of bypass valve: when all the valves and/or temperature-sensing
valves of heat radiator in the floor heating loop are closed, it can ensure that the heat
from boiler can be distributed.
Elements in the system:
●bypass valve
●flow meter, position L.
When all valves are closed, the minimum flow rate must be guaranteed.
The setting of pump position depends on the type of bypass valve, i.e. manual
bypass valve or temperature-sensing bypass valve.
8.2 Manually-operated Bypass Valve
In accordance with the following procedures:
1.The pump should be set in HS1(constant gear 1 mode) when the bypass valve
is adjusted.
The minimum flow rate（Q min）of the system shall be always guaranteed.
Please refer to bypass valve manual provided by the manufacturer.
2.After the regulating of bypass valve completes, set the pump in accordance
with Section 10.1 of Pump Setting.
第
7
章