Install Instructions

7
5602 876 v1.1
Low-Loss Header Installation
Installation
Dimensions (Type 120/80)
Low-loss header dimensions
Overall depth 5½” (140 mm)
Overall width 12c” (320 mm)
Overall height 36” (914 mm)
Please note that the pipe connections on the system side
are at a closer distance from each other than those on the
boiler side.
Legend
A Sensor well, 200 mm (for WB2 only)
B Air bleed plug (c/w O-ring)
C Boiler supply
D System supply
E System return
F Boiler return
G ½” drain plug
If the standard low loss header insulation is being installed,
add extra clearance between the back of the low loss
header and the finished wall [2” (51 mm) for Type 120/80].
Insulation dimensions
Overall depth 7d” (183 mm)
Overall width 8c” (223 mm)
Overall height 35f” (905 mm)
IMPORTANT
IMPORTANT
Low-loss header information
Model Type 120/80
Low-loss header *
Vitodens 100/200)
Connector size (NPT) inches 2
Distance between boiler inches
supply/return mm
25½
650
Distance between system inches
supply/return mm
21½
550
Matching insulation box Included
Additional clearance with inches
installed insulation mm
3f
92
* Please note that the temperature sensor for Vitodens 200,
WB2A/B must be purchased separately. See price list.