Installation And Connection; Installation Site Requirements - Bühler technologies TC-Standard Notice De Montage

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4 Installation and connection

4.1 Installation site requirements

The unit is only intended for wall-mounted use in enclosed
areas. Adequate protection from the weather must be
provided when used outdoors.
Install the unit leaving enough room below the cooler to dis-
charge the condensate. Leave room above for the gas supply.
Be sure to maintain the approved ambient temperature. Do
not obstruct the convection of the cooler. The vents must have
enough room to the next obstacle. The distance must espe-
cially be a minimum of 10 cm on the air outlet side.
Ensure adequate ventilation when installing in enclosed
housings, e.g. analyser cabinets. If the convection is inad-
equate, we recommend aerating the cabinet or installing a
fan to lower the inside temperature.
4.2 Installation
Run the gas supply to the cooler with a downward slope. The
gas inputs are marked in red and additionally labelled "IN".
If a large amount of condensate accumulates, we recommend
using a condensate trap with automatic condensate drain.
Our condensate drains, 11 LD V38, AK 20, AK 5.5 OR AK 5.2, are
suitable.
Glass vessels and automatic condensate drains are available
for draining condensate for external mounting below the
unit. When using automatic condensate drains, the sample
gas pump must be installed upstream of the cooler (pressure
operation) to ensure proper function of the condensate drain.
If the sample gas pump is located at the cooler outlet (suction
operation), we recommend using glass condensate traps or
peristaltic pumps.
Connecting the condensate drain
Depending on the material, build a connecting line with fit-
tings and tubing or hose between the heat exchanger and
condensate drain. For stainless steel the condensate drain can
be hung directly from the connecting tube, for hoses the con-
densate drain must be secured separately using a clamp.
The condensate drain can be mounted directly to the heat ex-
changer.
Condensate lines must always be installed with a slope and a
minimum inside diameter of 6 mm (1/4").
The MTG heat exchanger (in coolers with 2 heat exchangers)
can only be operated with peristaltic pumps.
4.2.1 Connecting the filter gas connections (optional)
The connection between the heat exchanger outlet and the fil-
ter inlet already has tubing. The connection G1/4 or NPT
1/4" (filter head marked NPT) for the gas outlet must be care-
fully and properly connected using a suitable screw connec-
tion.
When ordering the cooler with the option filter without Mois-
ture detector, a bypass may be connected to the filter head.
The filter head is intended for a G1/4 internal screw thread
which is plugged at the factory. To use it, unscrew the plug
and screw in a suitable screw connection. Pay attention to
leaks.
BX440026 ◦ 12/2020
NOTICE
Installing filters limits the maximum approved operating
pressure in the system!
Operating pressure ≤ 2 bar
4.2.2 Flow adapter connection (optional)
When ordering the cooler with the option moisture detector
without filter, it will be factory installed inside a flow adapter.
The connection between the heat exchanger outlet and the
flow adapter inlet does not have tubing included. The connec-
tion G1/4 or NPT 1/4" (flow adapter marked NPT) for the gas
inlet/outlet must be carefully and properly connected using a
suitable screw connection. Here the direction of flow is not
relevant.
4.2.3 Connecting the moisture detector (option)
When ordering the cooler with moisture detector option, it
will be factory installed inside a flow adapter, or for the filter
option installed and connected in the filter head.
4.2.4 Peristaltic pump connector (optional)
Coolers ordered with attached peristaltic pump already have
it installed and wired. Heat exchangers ordered at the same
time are already installed and connected to the peristaltic
pump.
The ø6 mm (0.24 inch) hose nipple for the pump's condensate
outlet must be carefully and properly connected with a suit-
able hose and hose clamp.
Versions with screw connections DN 4/6 or 1/6"-1/4" are sup-
plied with ferrule and knurled nut and must be carefully
sealed with appropriate hose.
NOTICE
Installing peristaltic pumps CPsingle / CPdouble limits the
maximum permissible operating pressure in the system!
Operating pressure ≤ 1 bar
4.2.5 Connecting the heat exchanger
The picture on the left shows the schematics for connecting
two separate heat exchangers.
To minimise gas wash out in the cooler, the two (identical)
heat exchangers must be operated in series (right picture).
This should be done as follows:
1. Gas inlet line to red gas inlet on heat exchanger 2 (pre-
cooling).
2. Connection between gas outlet on heat exchanger 2 and
the red gas inlet on heat exchanger 1 (after-cooling).
3. Attaching the final gas output line to the gas outlet on
heat exchanger 1.
Bühler Technologies GmbH 11