Installation Accessories; Thermal Return Temperature Raising Facility (Fully Pre-Fitted); Accessories For The Boiler - Viessmann VITOLIGNO 200-S Technical Manual

Installation accessories

5.1 Accessories for the boiler

Thermal return temperature raising facility (fully pre-fitted)

c
VITOLIGNO 200-S
For systems with heating water buffer cylinder.
Part no. 7172 808
Nominal diame- DN 25
ter
a mm 322
b mm 125
c G 1½
External dimen- mm 365 x 250 x 200
sions
(incl. thermal in-
sulation)
Part no. 7172 808
For 20 and 30 kW boilers.
Comprising:
■ 2 ball valves with thermometers
■ Thermostatic control valve
■ Thermal insulation
■ Check valve
■ High efficiency circulation pump Wilo Yonos PARA 25/6
Part no. 7172 809
For 40 and 50 kW boilers.
Comprising:
■ 2 ball valves with thermometers
■ Thermostatic control valve
■ Thermal insulation
■ Check valve
■ High efficiency circulation pump Wilo Yonos PARA 30/6
7172 809
DN 32
420
125
G 2
475 x 250 x 200
5
VIESMANN
59