Grundfos ALPHA 15-55 HWR-T User Manual

Section 15.105 (b)
This equipment has been tested and found to comply with
the limits for a class B digital device, pursuant to Part 15
of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy and, if not
installed and used in accordance with the instructions, may cause
harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment to an outlet on a circuit different from
that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for
help.
This equipment complies with FCC/IC radiation exposure limits set
forth for an uncontrolled environment and meets the FCC radio
frequency (RF) Exposure Guidelines and RSS-102 of the IC radio
frequency (RF) Exposure rules. This equipment should be installed
and operated keeping the radiator at least 8 in (20 cm) or more
away from person's body.
Canadian ISED information
These devices (ALPHA 15-55 HWR-T, Temperature sensor HWR)
contain license-exempt transmitter(s)/receiver(s) that comply with
Innovation, Science and Economic Development Canada’s license-
exempt RSS(s). Operation is subject to the following two
conditions: (1) this device may not cause interference, (2) this
device must accept any interference, including interference that
may cause undesired operation of the device. Innovation, Science
and Economic Development Canada ICES-003 Compliance Label:
CAN ICES-3(B)/NMB-3(B).
These devices (ALPHA 15-55 HWR-T, Temperature sensor HWR)
comply with Industry Canada RSS-247 and license-exempt RSS
standard(s). Operation is subject to the following two conditions: (1)
this device may not cause interference, and (2) this device must
accept any interference, including interference that may cause
undesired operation of the device.
7. Control functions
The pump operation is controlled by temperature measured at the
wireless temperature sensor mounted on the hot water return line.
When the pump has mains connected it starts to circulate hot water.
During the first minutes of operation, up to 5 minutes, it learns the
system temperature, T
sys
. On the basis of the system temperature,
the pump calculates the start and stop temperature:
T
stop
= T
sys
- 5 °F (maximum: 110 °F)
T
start
= T
sys
- 16 °F
Example 1:
if T
sys
= 110 °F (maximum: 115 °F) then
T
stop
= 105 °F
T
start
=102 °F
Every 12 hours or at each power cycle the pump performs the
above sequence to calibrate and flush the system.
If system temperature, T
sys
, is below 85 °F the pump operates with
5 minutes on and 15 minutes off cycles and T
start
and T
stop
is
omitted.
If the temperature sensor is not paired or connected to the pump
the pump operates with 5 minutes on and 15 minutes off cycles and
can be used during commissioning etc.
7.1
Pump display
1 2 3 4 5
TM077570
LED symbols and buttons on the pump display
Pos. Description
1 Connect LED
2 Temperature sensor LED
3 POWER on LED
4 Pairing button
5 Pump operation LED
Pump
display
symbol
Status Explanation
POWER on Green
The LED lights green when the pump is
powered on.
Connect
Flashing
blue
The LED flashes blue when the pump
is ready for pairing with
the temperature sensor. The symbol
flashes blue when the paired
temperature sensor is disconnected.
Connect Blue
The LED lights blue for 5 seconds
when pairing is successful between the
pump and the temperature sensor.
Connect
Flashing
green
The LED light flashes green every 5
seconds when the pump and
the temperature sensor are paired
Connect
Flashing
red
The LED flashes red for 5
seconds when pairing has failed with
the temperature sensor.
Pump
operation
Green
The LED lights green when the pump
circulates water during normal
operation and is connected to the
temperature sensor.
Pump
operation
Yellow
The LED lights yellow when the pump
has timed out. The pump does not
circulate water.
Pump
operation
Red
The pump is in an alarm state (see
fault finding section).
Temperatur
e sensor
Red
The LED lights red when the battery
level in the temperature sensor is at a
critically low level (see fault finding
section). Replace the battery in the
temperature sensor.
10
English (US)

Grundfos ALPHA 15-55 HWR-T Specifications

General

Model	ALPHA 15-55 HWR-T
Category	Water Pump
Type	Circulator Pump
Max. Operating Pressure	145 psi
Frequency	60 Hz
EEI	0.20
Max Head (metric)	5.5 m
Protection Class	IP42
Material	Cast Iron
Application	Recirculation
Port-to-Port Length	6.5 inches
Max Flow Rate (metric)	1.5 m³/h
Power Supply	Single-phase
Temperature Range	36°F to 230°F
Liquid Temperature Range	2°C to 110°C