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5.3
Scope of delivery
5.4
Accessories
6
Description of the pump
Fig. 1: View Atmos GIGA-I
58
Additional information
CH
Heating pumps
Fluids
Water-glycol mixtures or fluids with a different viscosity than pure water increase the
power consumption of the pump. Only use mixtures with corrosion protection. Observe the
relevant manufacturer's specifications!
•
Adjust the motor power if required.
•
The fluid must be sediment-free.
•
Wilo's approval must be obtained for the use of other fluids.
•
When using water-glycol mixtures, the use of an S1 variant with a corresponding mech-
anical seal is generally recommended.
•
The compatibility of the standard seal/standard mechanical seal with the fluid is gener-
ally given under normal system conditions.
Special circumstances may require special seals, for example:
–
solids, oils or EPDM-attacking substances in the fluid,
–
air content in the system, etc.
Observe the safety data sheet for the fluid to be pumped!
•
Pump
(Atmos GIGA-I 250 including mounting foot for installation and foundation fixation)
•
Installation and operating instructions
Accessories must be ordered separately:
Atmos GIGA-I/-D/-B:
•
PTC thermistor tripping unit for switch cabinet installation
Atmos GIGA-I/-D:
•
3 mounting brackets with fixation material for installation on a base
Atmos GIGA-D:
•
Blind flanges for repair work
Atmos GIGA-B:
•
Supports for installation on a base or baseplate for rated powers of 5.5 kW and higher
For a detailed list, consult the catalogue and spare parts documentation.
All the pumps described here are low-pressure centrifugal pumps in compact construction
design with a coupled motor. The mechanical seal is maintenance-free. The pumps can be
installed both directly as a pipe installation pump in a sufficiently anchored pipe or placed
on a foundation base.
The installation options depend on the pump size. Suitable Wilo control devices (e.g. Wilo-
CC-HVAC system) can control the power of the pumps continuously. This allows optimisa-
tion of the pump output for the demands of the installation and economically efficient
pump operation.
Version Atmos GIGA-I
The pump housing has an in-line design, i.e. the flanges on the suction and discharge sides
lie along a centre line. All pump housings are provided with pump support feet. Installation
on a foundation base is recommended for rated powers of 5.5 kW and higher.
Installation and operating instructions • Wilo-Atmos GIGA-I/-D/-B • Ed.01/2023-08
Permissible fluids
Heating water
(in accordance with VDI 2035/VdTÜV Tch 1466/CH: in ac-
cordance with SWKI BT 102-01)
...
No oxygen binding agents, no chemical sealants (ensure
closed system from corrosion perspective according to VDI
2035 (CH: SWKI BT 102-01); rework leaky points).
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