SystemAir VH07, Руководство по установке и обслуживанию

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English
The fan-coil units may contain a small amount of oil incompatible with plastic polyethylene piping
(PER/HTA/PVC). The coil should be rinsed out before use to avoid any problem.
It is the installer’s responsibility to contact their pipe supplier and take into account the general
instructions for the use of plastic pipes (PER/HTA/PVC).
Caution
To avoid damaging the coil, tighten the water pipe connectors on each header
using a counter-wrench.
When installing the unit, take care not to push the coils headers towards the
inside of the unit when tightening the connections.
Caution
In certain cases the tubes of bottom are not drainable. However, the hydraulic connections on the
lower part of the coil should be vented to the atmosphere by disconnecting all connectors, valves
and pipes from the main hydraulic circuit.
Caution
8 VH
7. HYDRAULIC CONNECTIONS
The units VH are equipped, in their standard 2-pipe configuration, with a main chilled water coil with 3,4
and 5 rows.
In the 4-pipe configuration, the unit is equipped , in the same finned block, with chilled water coil and
heated water coil (on an independent circuit).
The coil headers are equipped with air vent and drain plug. To vent the air from the coil, use the air vent
located on the upper part of the upper header. To drain the water, use the drain plug located on the lower
part of the lower header.The coil(s) MUST be drained of fluid in the event of the unit being kept out of
service in buildings subjected to negative ambient temperatures with the possibility of the coil icing.
The coil(s) is/are equipped with bleed valves for this purpose. To drain the coil, use the bleed valves located
on the lower part of the lower collector.
The supply water (2-pipe and 4-pipe coils) should pass through the bottom header.
Flexible pipes are recommended for connecting the coils. Take care not to over-tighten the water connections.
Over-tightening can lead to excessive strains on the materials in the event of major temperature variations.
All the water pipes must be insulated to avoid sweating and heat loss.
7.1. OPERATING FACE
The service panel of the Left / Right versions is defined according to the location of the hydraulic unions
when the unit is viewed by the operator from the "blowing face".
Note: In the example below, the operating face is on the left.
OPERATING
FACE
7.2. COIL WATER CONNECTIONS