Viessmann VITOROND 100 Technical Data Manual page 11

Vitorond 100, VR1 Technical Data
System Design Considerations
Waterside flow
Legend
A VR1-22 to -33
VR1-40 to -63
B
(continued)
Flow rates
The relationship between boiler flow rate and temperature
rise is according to the formula:
Boiler output (Btu/h) = 500 x flow (USGPM) x Rise (°F)
The following chart lists typical flow rates for the
Vitorond boiler:
Boiler Model
20° F rise
30° F rise
Boiler Model
20° F rise
30° F rise
General
The schematics on the following pages are to be seen
as guidelines only. They further do not display all system
varieties, safety devices, or concepts possible. Specific
system layouts may be further discussed with the local
Viessmann sales representative office.
Clearances
A minimum of 2" circumferential clearance from non-
insulated hot water pipes to combustible construction
must be maintained. In cases where the pipes are
insulated with pipe insulation of appropriate and sufficient
thickness and insulation values, the above clearance may
be reduced to 0".
VR1 -22
USGPM 8
USGPM 5.3
VR1 -40
USGPM 14
USGPM 9.3
Installation
-27 -33
9.2 12.2
6.1 8.1
-50 -63
17.2 21.5
11.5 14.3
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