Ultra
Assembly, installation and operating instructions
24
Hydraulic connection
Note the following points when connecting the hydraulic side:
Install and test safety components (expansion vessels, pressure relief valves and overflow valves).
Allow adequate space for the air flow (air inlet and outlet).
6.4.1 Connection to the pipe network
The flow and return connections protrude out of the top of the housing. The heat exchanger connection dimension for cop-
per/aluminium heat exchangers is:
1"
Proceed as follows when connecting up the unit's hydraulic pipework:
Disconnect supply line from the medium.
Connect up the pipework.
Remove protective caps from the flow and return.
Seal the valve connections and screw in place.
Important! Use an appropriate tool (e.g. pipe wrench) to protect connecting piece from being sheared off and
twisted. The connections must be installed without tension!
IMPORTANT NOTE!
Using flexible pipes
The use of flexible pipes (such as braided pipe connections, spiral or corrugated pipes) is recommended
when installing the unit under a solid ceiling. When used in conjunction with appropriate shut-off valves,
this makes it possible to dismantle the unit relatively easily (for example when disassembling the fan). With
certain unit designs, the fans can only be replaced once the unit has been completely disassembled.
3
2
1
Fig. 8: Ultra connections
1
Flow 1"
2
Return 1"
3
Motor junction box
