4 Planning and installation – Scope of delivery
38
The return temperature control consists of a 3-way mixing valve with
a 230 V servo drive (running time 120-240 s) and a circulation pump
from energy efficiency class A. We recommend for the
•
HDG Compact 25/35/45/50/65:
Wilo 30/1-7.5, 3-way mixing valve DN 32
•
HDG Compact 80:
Wilo 30/1-8, 3-way mixing valve DN 40
(or comparable)
The hydraulic system must be installed in accordance with specific
technical principles of the heating construction industry. Take into
account the isolation valves required for maintenance work and re-
pairs.
The return temperature control must be installed according to the
specifications of HDG Bavaria.
4.4 Scope of delivery
Included in the scope of delivery:
•
HDG Compact 25 - 80 boiler
•
Cladding
x = included, o = optional
•
Feeding system (customer-specific)
•
Delivery system (customer-specific)
•
Cleaning tools
•
Operating documentation
Upon delivery, check that the scope of delivery matches the informa-
tion on the delivery note.
The pipe dimensions must be adapted to meet the requirements at
the site. Take the water-side connections of the boiler for the supply
and return into account.
✎
See chapter “3 Mode of operation”, section “3.3 Technical data”.
The return temperature control is not designed for the use of a
gravity brake and this should therefore not be installed.
Packet
Change
HDG Compact
25/35
HDG Compact
45/50/65
HDG Compact
80
1A
Supporting structure and assembly
material
x
x
x
1B
Back side
in packet 1A
x
x
2
Feeding system side and flue gas pipe
side
x
x
x
3
Cladding for pellet vacuum container
o
o
o
4
Front and top
x
x
x
Table 4/4 - Dimensions on back side, HDG Compact 25 - 80 (mm)