Installation; Unit Installation - REMKO WLT EC Series Operating And Installation Instructions

REMKO WLT EC series
6

Installation

6.1 Unit installation

Unit installation
NOTICE!
Installation and commissioning should only be
performed by trained specialists.
The unit is attached by means of a wall bracket,
with consideration to the minimum clearances
required.
1. Mark the mounting points on the structurally
permissible building sections according to the
dimensions of the wall bracket.
2. If necessary, remove the break out opening
of the housing.
3. Connect the medium pipes, electrical cables
and condensate drainage line to the indoor
unit as described below.
4. Hang the indoor unit onto the wall bracket by
tilting it back slightly and by pressing the
bottom part of the unit against the bracket.
5. Check again that the unit is level.
Fig. 30: Horizontal positioning
34
Connection of the medium piping
n The medium piping of the unit is designed
without any transition. The respective transition
(press fitting, soldering sleeve, etc.) can be
selected on an individual basis.
n For the purpose of servicing, connections must
be equipped with shut-off valves and the
medium flow rate adjusted using valves for
hydronic balancing.
n Additional automatic bleed valves are to be
provided in the supply and return flow at the
installation's highest point.
n The medium piping may not exert any struc-
tural load on the unit.
n The line connections may not generate any
thermal or mechanical stresses on the unit. If
necessary cool the piping or support with the
second tool.
Necessary system components
Valve assembly (standard equipment)
With 2-conductor systems cold or warm medium is
fed through the register in the unit and then cold or
warm air is released. Regulation is realised by the
3-way valve assembly. It comprises the electrically
actuated valve head and the valve body. If the
head is electrically activated, it actuates the body,
which routes the medium into the register. If the
temperature is reached, the head is switched off
and the medium is fed past the heat exchanger
through the bypass .
The bypass serves to ensure the minimum medium
flow rate for the chiller. In the case of units with 2-
way valve, no bypass is present. This version is
recommended with the use of a proportional pres-
sure-controlled circulation pump.
The time between being fully open and fully
closed can be approx. three minutes.
Valves for hydronic balancing
The calculated individual pressure losses in the
pipeline network layout for each individual unit are
adjusted to the entire system with hydronic bal-
ancing valves to be provided by the customer. The
nominal flow rates for the medium adjust to the
values needed as a consequence of the pressure
loss.