48
TK 56701-1-IM-EN
Refrigerant Tubing and Electrical Wiring
Refrigeration Tubing
The following installation standards must be followed:
•
Thermo King requires the use of bulk rolled refrigeration tubing and tube benders to reduce fittings and solder
joints where applicable. It is also required that the use of nitrogen or another inert gas be used to purge the tubes
before soldering. This prevents oxidation and formation of scale inside tubes.
•
Clean all tubes and fittings prior to installation and soldering.
•
Discard O-rings that come with the condensing unit. Oil and install new O-rings supplied in kit.
IIm
mp
po
orrtta
an
ntt:: Apply refrigerant oil to the O-rings only. D
DO
O N
NO
OT
T A
AP
PP
PL
LY
Y O
OIIL
L T
TO
O T
TH
HE
E O
OR
RS
S F
FIIT
TT
TIIN
NG
G T
TH
HR
RE
EA
AD
DS
S!!
•
Clean all threads on ORS fittings prior to installation.
•
Each zone needs to have a separate suction line with a check valve installed as close as possible to condensing unit.
N
No
otte
e:: Remove internal components of valves before soldering and use 35% silver solder.
•
When tightening ORS tubing connections, always use a backup wrench to hold the backside of the ORS fitting to
prevent the refrigeration tube from twisting.
•
Torque ORS fittings on the condenser to proper specifications.
•
Insulation should be added to all segments of suction and hot gas tubes.
•
All refrigeration tubes should be routed neatly in a wall or ceiling trough.
•
Secure all tubing every 609.6 mm (24.00 in.) with provided clamps.
Electrical Wiring
The following installation standards must be followed:
•
Superlube (or equivalent) must be applied to all electrical connectors.
•
Electrical connectors must be installed securely to the correct mating connectors at rear of condensing unit.
•
Electrical harness should be routed neatly in a wall or ceiling trough.
•
Electrical harness should be secured by clamps or tie bands every 600 mm (24.00 in.)
•
When installing terminal onto bare wires, you must strip 7 mm (0.25 in.) from the ends and attach the terminals
securely using the correct tool.
•
Electrical connections to the evaporator terminal strips must be clean and tight.
•
Electrical connections the ground studs must be clean and tight.