Sub-Mounting Kit With Mixer - Viessmann VITODENS 222-F Series Technical Manual

Installation accessories
Valves/fittings for flush mounting
For gas condensing combi boiler
Part no. ZK04926
Comprising:
■ Valves/fittings, heating flow/heating return
■ Valves/fittings, cold water/DHW
■ Boiler drain & fill valve

Sub-mounting kit with mixer

■ For gas condensing system boiler
Part no. ZK04304
■ For gas condensing combi boiler
Part no. ZK04928
For surface mounting
Comprising:
■ Plate heat exchanger for system separation of the heating circuit
with mixer
■ Variable speed high efficiency circulation pump for the heating cir-
cuit with mixer
■ 3-way mixer with mixer motor
■ Mixer PCB, capable of communicating with the control unit via
PlusBus
■ Valve for regulating the flow rates of both heating circuits
■ Adjustable bypass
■ Flow temperature sensor
■ Cover with same design as the wall mounted boiler
■ Installation template for quick and easy installation
Note
Order a pre-plumbing jig separately in addition to the sub-mounting
kit.
7
VIESMANN
64
(cont.)
■ Air vent valve
■ Pressure gauge
■ Gas shut-off valve with thermally activated safety shut-off valve
■ Mounting plate, flush mounting
Connections (male thread)
Gas shut-off valve
Heating flow/heating return
Cold water/DHW
4 5
0
Sub-mounting kit accessories
Flow indicator
Part no. 7438927
To display the flow rate in the unregulated heating circuit with
hydronic balancing of the heating circuits.
Contact temperature limiter
Part no. 7425493
Maximum temperature limiter for underfloor heating circuits.
With connecting cable, 1.5 m long.
R ¾
R ¾
R ½
VITODENS