SYSHRW – Installation Operation Manual (IOM HRW 03 N 13GB)

English
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Air flow (m
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Available pressure (Pa)
Ductwork curve
Main return
pipe work
Hoses
Spherical
dome valve
Siphon
Main condensate
drainage pipe work
Main water supply
pipe work
13SysHrw
11.5.2. MODEL SYSHRW120
0. Poulie fermée
1. Poulie ouverte 1 tour
2. Poulie ouverte 2 tours
3. Poulie ouverte 3 tours
12. HYDRAULIC CONNECTIONS
12.1. RECOMMENDATIONS FOR HYDRAULIC CONNECTIONS
1. t is recommended that all units are connected to a water supply and return pipe system of the
Tickelman Loop type. The Tickelman Loop system is self-balancing and thus only requires manual
balancing if a large number of units with different ow and pressure loss characteristics are
connected to a single hydraulic loop. A very simple way of checking the hydraulic balance is to
measure the temperature difference between the water connections. To ensure a correct water ow,
the difference must be in the region of 3 to 7 °C in Cooling mode and 2 to 5°C in Heating mode.
A system with two parallel pipes can also operate in a perfectly adequate manner, but it is more
difcult to achieve, and to maintain, balance.
2. Steel, copper or P.V.C. pressure pipes may be used.
3. It is advisable to make the unit’s water supply and return conveyance lines with short lengths of
high-pressure hose, as they form excellent shock absorbers for unit operating noise and hydraulic
pressure surges.
One of the hose ends must be tted with a rotating connector to facilitate removal for maintenance.
Rigid pipes can be connected directly to the unit, but this is not recommended due to their inability to
absorb vibrations and noise.
Rigid pipes must be equipped with removable connectors to facilitate future removal of the unit from
its location.
4. Certain exible hose threaded connectors are supplied with sealing paste. If this is not the case, use
Teon tape to create a tight seal.