Delta 21CK018C24, Instruction Manual

Page: 53 / 64

52
(6) Installation of heating throttle orifice
Put the heating throttle orifice confirmed according to above table onto the valve base A of throttle
orifice.
Notice! Pay attention to specification and installation direction of throttle orifice.
Fig 13
(7) Installation of throttle valve
Its installation is shown in Fig 14:
Fig 14
Notice! In order to ensure normal operation of the unit, never inversely install the
cooling throttle orifice and heating throttle orifice.
Install the throttle valve and throttle orifice according to the above sequence. Meanwhile, the seal
rings shall be installed properly at joints to prevent leakage.
Model Torque moment
21CK018C24
2
0±5(N·m)
21CK024C24
2
0±5(N·m)
21CK036C24
2
0±5(N·m)
21CK048C24
2
0±5(N·m)
21CK060C2
2
0±5(N·m)
(8) Connection pipe and joint of throttle valve
After connection of throttle orifice, throttle vale and liquid pipe joint, connect connection pipe directly
with joint of throttle valve.
2. Connection of Pipeline
(1) Align the flared end of the copper pipe with the center of the thread joint. Manually tighten the
flared end nut.
(2) Use torque spanner to tighten the flared end nut until the spanner clatters (See Fig.15).
Fig. 15
Fig. 16
Heating throttle orifice
Cooling throttle orifice
Flow direction of cooling Flow direction of heating
Heating
throttle orifice
Valve base A
Joint
Fitting Pipe for
Indoor Unit
Flaring Nuts
Fitting Pipe
Torque Spanner
Spanner
Liquid Valve
Gas Valve
One-Way Valve
Valve Cap
Valve Stem
Inner Hexagon
Spanner
Screwdriver