Xylem MOH2 Multi zone mixing module (obsolete) - Manual (Page 10)

10
Installation and operation manual MOH2
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If you purchased the station on mounting rails
• Attach the station directly to the wall
• Observe the above advice for avoiding noise problems
• You can use the mounting rails to mark the mounting holes before drilling
If you purchased the station with cabinet
• Remove the front cover of the cabinet
• Install the station in the appropriate niche in the wall and attach it there
• Cover the station with plastic film to keep dirt out
• Use plaster to fill the space between the niche and the cabinet
• Reattach the front cover so that the cover is flush with the plaster surface
Calorimeter
• A parts kit for the attachment of a calorimeter can be ordered as an
option
• Leave enough space in the return of the boiler loop for installation
• There is no need for a sensor fitting on the feed side. The feed side
temperature sensor can be installed directly in the base module
Hydraulic connection
General guideline
• Attach the pipes taking care to avoid too much stress on the module
• To avoid noise, the station must not touch the wall or the mounting
fittings. Use rubber grommets.
• The boiler loop pipes must be insulated inside the wall to avoid noise.
Connection
• First connect the boiler loop return side to the MOH2. If necessary,
install a calorimeter here.
• Next, attach the boiler feed side to the MOH2.
• Attach the low temperature heating loops using compression fittings
starting from the left side. When using plastic tubes, observe the in-
structions of the system manufacturer.
Connection of calorimeter sensor
• The base module has a 1/2" connection for the dip tube of the calorimeter
next to the boiler feed connection.
• Install the dip tube of the calorimeter here.