Install Instructions

8
5602 876 v1.1
Low-Loss Header Installation
Installation
Installation Steps
1. Remove low-loss header and supplied accessories from
carton (see section entitled “Standard Equipment” on
page 3 for a list of component parts included with your
low-loss header).
2. Drain plug B, air bleed plug C (c/w O-ring) and
sensor well D are pre-installed. Ensure thightness
and check for leaks.
3. Tighten all connections.
4. Install low-loss header only in vertical position (as
shown). See pages 6 and 7, indicating system and
boiler connection sides. Make system and boiler
connections accordingly.
5. Insert temperature sensor E probe end deep into
sensor well D. The other end of the low-loss header
temperature sensor comes prewired to terminals 3
and 4 on plug X7. Insert plug X7 into corresponding
terminal on boiler control console. See wiring
information on page 9.
Legend
A Low-loss header
B Drain plug (c/w O-ring)
C Air bleed plug (c/w O-ring)
D Sensor well, 150 mm (Vitodens 200
only, except model WB2A 6-24C)
E Temperature sensor (Vitodens 200
only, except model WB2A 6-24C,
WB1A/B)