Sample Gas Pump Connection Gas Lines (Optional); Connecting The Heat Exchanger; Flow Adapter Connection (Optional); Connecting The Moisture Detector (Option) - Bühler technologies TC-Double Guía Rápida

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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".
The optimal gas connection is detailed in chapter Connecting
the heat exchanger.
If a large amount of condensate accumulates, we recommend
using a condensate trap with automatic condensate drain be-
fore the cooler.
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 ahead of the cooler (pressure op-
eration) 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 drains
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 suspended directly to the connecting tube, for hoses the
condensate 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 DN 6/8 (1/4").

4.2.1 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 G 1/4 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.

4.2.2 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.

4.2.3 Connecting the peristaltic pump (option)

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 connection via the condensate outlet screw connection on
the pump must be carried out carefully and properly.
BX440021 ◦ 06/2017
NOTICE
Installing peristaltic pumps CPsingle / CPdouble limits the
maximum permissible operating pressure in the system!
Operating pressure ≤ 1 bar

4.2.4 Sample gas pump connection gas lines (optional)

On coolers ordered with attached sample gas pump these are
already installed and wired. Add-on parts ordered at the same
time are already installed and connected to the sample gas
pump.
Avoid mixed-material installation, i.e. metal piping to plastic
bodies. If this cannot be avoided in isolated applications,
screw the metal connections into the pump body with care,
never use force.
Lay the lines so the line at the inlet and outlet remains flexible
for an adequate distance.
The pumps are marked IN for inlet and OUT for outlet at the
mounting ring. Be sure the gas line connections are tight.

4.2.5 Connecting the heat exchanger

To minimise gas wash out in the cooler, the two (identical)
heat exchangers must be operated in series. This should be
done as follows:
1. Gas inlet line to red gas inlet on heat exchanger no. 2
(HE2, pre-cooling; heat exchanger turned away from cool-
ing air intake).
2. Connection between the HE2 gas outlet and the red gas
inlet on heat exchanger no. 1 (HE1, after-cooling; heat ex-
changer turned toward cooling air intake).
3. Secure final gas output line to the HE1 gas outlet.
HE 1
Air
ON
Condensate outlet
Flow chart:
1 Heat exchanger 2 (HE2)/
pre-cooling
2 Heat exchanger 1 (HE1)/
after-cooling
3 Moisture detector (op-
tion)
HE 2
Air
OFF
4 Filter (optional)
5 Sample gas pump (op-
tional)
6 Condensate pump (op-
tional)
Bühler Technologies GmbH 11