Viessmann VITOSOLIC 200 Installation And Service Instructions Manual page 124

Function description
External heat exchanger
Primary pump (collector/ext. heat
exchanger) to R3 on:
■ S1−S2 > "ΔTon"
Delivered condition 8 K (see
page 152)
Secondary pump (heat exchanger/con-
sumer 1) to R1 on:
■ S9−S2 > "HE ΔTon"
Delivered condition 5 K (see
page 153)
Secondary pump (ext. heat exchanger/
consumer 1) to R1 off:
■ S9−S2 > "HE ΔToff"
Delivered condition 3 K (see
page 153)
Make the following settings at the
solar control unit:
1. Main menu
■ "Solar"
■ "Options"
– "System"
Set value "3".
– "Hyd. Type"
Set value "2".
– "Ext. HE"
Set "Yes".
Version 2
System
1
2
3
4
5
6
7
124
(cont.)
Hyd. Type
1
1, 2
1, 3
1, 2, 4
1
1, 3
1
2. Main menu
■ "Solar"
■ "Contractor"
– "HE-cylinder"
Set value "1".
– "Sen.HE.flow"
Set value "9".
3. Main menu
■ "Solar"
■ "Setting values"
– "HE ΔTon"/"HE ΔToff"
Set a value.
■ Pump corresponding collector array
(primary circuit) on and valve for con-
sumer to be heated open:
Temperature differential between the
collector temperature sensor and the
cylinder temperature sensor > start
temperature differential "ΔTon"
■ Pump external heat exchanger (sec-
ondary circuit) on: