Grundfos ALPHA1 L Series User Manual

English (GB)
6
3.5 Insulating the pump housing
Fig. 6 Insulating the pump housing
You can reduce the heat loss from the pump and pipe by
insulating the pump housing and the pipe with insulating shells,
which can be ordered as an accessory. See section
5.5.2 Insulating shells.
7
Refit the terminal
cover. See A.
Note: It is possible
to turn the power
supply plug on the
side for a 90 °
cable entry. See
B.
TM06 8549 0918 - TM06 8550 0918
8
Tighten the union
nut.
TM06 8551 0918
9
Tighten the cable
gland onto the
power supply
plug.
TM06 8552 0918
10
Insert the power
supply plug into
the male plug on
the pump.
TM06 8553 0119
Step Action Illustration
B
A
TM06 8564 1317
Do not insulate the control box or cover the operating
panel.

Grundfos ALPHA1 L Series Specifications

General

Pump Type	Circulator
Series	ALPHA1 L
Max Head	6 m
Voltage	230 V
Frequency	50/60 Hz
Liquid Temperature Range	2°C to 110°C
Max Operating Pressure	10 bar
Insulation Class	F
Enclosure Class	IP42
Application	Heating systems
Control Modes	Proportional pressure, constant pressure
EEI	0.20
Material	Cast iron
Power Input	Varies by model (e.g., ALPHA1 L 25-40 180: 3-22 W)
Pipe Connection	G 1 1/2