Water Connections; Screw Connections (Air Heater Used For Heating); Condensate Drain Connection (Air Heater Used For Cooling Or In Reversible Mode) - Carrier 42AM serie Installations-, Betriebs- Und Wartungsanleitungen

7 - WATER CONNECTIONS

7.1 - Screw connections (AIR HEATER used for heating)

The side of the AIR HEATER hydraulic connection may also be positioned to the left or right of the air flow direction simply by turning
it (for HEATING applications). Ensure that the cable glands on the motor terminal box are facing downwards to ensure the assembly
is correctly sealed.
The hydraulic connection on the AIR HEATER LP water version is screwed in using threaded unions. The coil supply pipes and the
general supply pipes must be connected and tightened according to good working practice, namely, using two adjustable wrenches
to avoid any torsion of the coil collector.
CARRIER shall in no way be held liable for damage to the coil if these installation instructions are not followed and the warranty shall
be invalidated.
Two keys are used to ensure the counter torque; the unit's
connection tube will not be pierced.

7.2 - Condensate drain connection (AIR HEATER used for cooling or in reversible mode)

For COOLING applications, the condensate drain pan is integrated into the AIR HEATER. This is of antibacterial design thanks to its
diamond pointed based.
2nd gasket
1st gasket
M5 CBLX screw
Procedure for fitting the union on the pan:
1. Position the 1st gasket into the lower groove on the union
2. Position the 2nd gasket into the upper groove on the union
3. Fix the assembly onto the condensate drain pan using the M5 CBLX screw supplied in the threaded insert fixed onto the pan.
Condensate drain pan connection
Once the union is fitted with these gaskets, fit the pipe onto the union (outer diameter 32 mm). The gaskets provide an adequate seal
for the union.
Nevertheless, it is important to ensure that this connection between the union and the pipe does not bear all the weight of the drain
column fitted with a siphon which must be installed according to good working practice (risk of detachment).
XX7436983-07_IOM_11_2019_42AM_AMA.indb 29 XX7436983-07_IOM_11_2019_42AM_AMA.indb 29
If only one key is used, the connection tube may twist and be
This is not covered by the CARRIER warranty
Upper groove
Lower groove
Condensate drain
pierced.
pipe
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