Dectron DS Series Installation Manual

G – Piping Connection
April, 2018 G-4 INM.XX.X.00
NOTE: The piping schematics shown on Pic. G.4, are example only - the design, provision, and installation of
actual condenser line set is not Dectron’s responsibility and is to be done by a third party.
Pressure Testing, Evacuating and Charging
 Use proper field practices when pressure testing, evacuating, and charging the system.
 Pressure-test line set and condenser – refer to the dehumidifier main label for operating pressure level.
o Use only dry nitrogen for pressure testing!
o Condenser is typically shipped with some nitrogen holding charge (approx. 5-15 psi). Absence of
holding charge does not necessarily indicate a leak/shipping damage, however it’s recommended to
leak test condenser prior/separately.
o Ensure that dehumidifier isolating ball valves stay close during pressure test and evacuation.
 Evacuate line set and condenser – ensure that vacuum of 250 microns (min) is achieved and held for 30 min.
 Charge the condenser and line set with proper amount of proper refrigerant.
o Refer to dehumidifier main label for refrigerant type and field charge. Ensure proper amount is added.
o Use ball valve access port(s) or additionally installed access port(s) on the line set for charging.
o Charge with liquid refrigerant ONLY! Once proper refrigerant amount (“field charge”) is added to the
line set and condenser – open dehumidifier isolating ball valves to allow for refrigerant flow.
Pic.G.4

Dectron DS Series Specifications

General

Type	Refrigerant Dehumidifier
Airflow	Varies by model
Capacity	Varies by model
Power Supply	Varies by model
Dimensions	Varies by model
Weight	Varies by model
Operating Temperature	5°C to 35°C