Control Connections - Viessmann VITOCELL 300-H Installation Instructions Manual

Connections

Control Connections

Not present on 42 and 53 USG
(160 and 200 L) version
10
Vitocell 300-H, EHA Series Installation
1. Install reducing coupling (included in (Connection
Fitting Package). Use approved pipe sealant.
2. Install sensor well using sealant.
Where Vitotronic 200 or 300 is utilized to control DHW
production:
3. Insert DHW tank temperature sensor (supplied with
Vitotronic 200 or 300) fully and completely into
sensor well.
IMPORTANT
Due to the length of the stainless steel well (15" (380
mm)), care must be taken to ensure that the sensing
bulb of the limit is inserted and pushed to the end of
the stainless steel well.
Where a Vitotronic 100 and a Viessmann Power/Pump
Control Module are utilized to control DHW production:
4. Insert the extended capillary of the aquastat
(supplied with Viessmann Power/Pump Control
Module, not illustrated) fully and completely into
sensor well. Mount aquastat inconspicuously on tank
paneling. Follow instructions below with regard to
sensor and spring clip installation.
...if aquastat is to be mounted remote from the
aquastat well:
5. Align sensor bulb with spring clip.
6. Slide assembly into well.
7. The retention spring clip must press the bulb
properly to ensure surface contact with the well.
... if aquastat is to be mounted directly on the tank
well,
8. Mount aquastat with holding clip supplied directly
onto well. Bend capillary tube into groove opening
to allow for mounting of aquastat.
WARNING
To ensure optimum, safe operation, the supplied
stainless steel well must be installed. The well
diameter is large enough to accommodate a wide
variety of sensing bulbs.
Always use spring clip to ensure proper contact of
capillary bulb against the stainless steel well for
proper sensing/heat transfer!