Installation Of The Vitodens 300-W With Mounting Frame - Viessmann VITODENS 300-W Technical Manual

Installation accessories
For accurate adjustment of the flow rates, a flow indicator (available
as an accessory) can be fitted into the flow line of the unregulated
heating circuit. The rated circulation water volume of the boiler (see
specification), minus the flow rate through the plate heat exchanger of
the sub-mounting kit, results in the flow rate of the unregulated heating
circuit.
Example:
Vitodens 300-W, 4.0 -26 kW
■ Rated circulation water volume at ΔT 20 K: 1018 l/h
■ Heating output for regulated heating circuit (assumed): 13 kW

Installation of the Vitodens 300-W with mounting frame

Mounting frame consisting of:
■ Diaphragm expansion vessel, rated capacity 18 l
■ Fittings on the heating water and DHW side
■ Boiler drain & fill valve
■ Gas angle valve R ½ with integral thermally activated safety shut-off
valve
■ Flexible connection line for the diaphragm expansion vessel
All fittings are located under the boiler covers.
Installation with a self-supporting mounting frame
Self-supporting mounting frame
With valves and gas angle valve G ¾ with thermally activated safety
shut-off valve
■ For Vitodens 200-W gas condensing combi boiler with threaded fit-
ting
Part no. Z002 352
■ For Vitodens 200-W gas condensing boiler with threaded fitting
Part no. Z002 354
■ For Vitodens 300-W gas condensing boiler with threaded fitting
Part no. ZK00 025
VITODENS
(cont.)
■ Resulting flow rate, primary side, plate heat exchanger at ΔT 20 K:
■ Flow rate of unregulated heating circuit (to be adjusted via the bal-
Mounting frame
Only for Vitodens 300-W, 26 and 35 kW.
■ For installation on finished walls with threaded fittings
■ For installation on unfinished walls
Ceiling extension for self-supporting mounting frame
Part no. 7329 151
For "self-supporting" installation in a room.
560 l/h
ancing valve): 1018 l/h – 560 l/h = 458 l/h
Part no. ZK00 277
Part no. ZK00 278
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VIESMANN
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