Johnson Controls DSV60B-300B, Installation Instructions Manual

Page: 7 / 48

FORM 145.29-IOM2 (814)
JOHNSON CONTROLS
7
can be slightly pitched in the same direction as drain
pan outlet.
DSV Operating Weight (Lbs)
Unit
Operating Weight
(Condenser Only)
Shipping Weight
(Condenser Only)
DSV060B 920 (620) 980 (675)
DSV096B 1240 (810) 1290 (865)
DSV120B 1325 (860) 1385 (915)
DSV144B 1560 (980) 1645 (1035)
DSV180B 1655 (1030) 1740 (1090)
DSV240B 1875 (1210) 1960 (1270)
DSV300B 2480 (1400) 2600 (1450)
UNIT MOUNTING
The 5 ton model is shipped as a fully assembled
integral package. The 8 ~ 25 ton models are shipped
in two pieces - a separate condensing unit and
evaporator module - which are intended for assembly
into a freestanding vertical package on site. The unit
is not designed for remote condenser / evaporator
installation and must be installed as a packaged
system. Installation or modification of the unit that is
not described in this manual is not factory
recommended nor is it factory supported. User is
responsible for any damage that as a result may
occur.
Flanges for all duct connections, corner securing
brackets, and refrigerant tubing couplings are shipped
in the condensing section of the unit for field
installation. Duct flanges for evaporator return are
incorporated into the filter rack.
Floor mounted units should be secured on a solid,
level pad or sturdy stand. The base of the unit should
be approximately 6 inches higher than the lower edge
of the wall opening. This height will allow the
condenser air ducts to be pitched away from the unit,
offering protection from rain water entering the base
pan (refer to typical installation diagram on Page 4).
The use of an isolating rubber sheet is recommended
to reduce vibration and noise transmission. Ensure
that the entire base is continuously supported. Unit
may be pitched slightly to ensure efficient drainage of
condensate.
Ensure that entire base is continuously
supported. DO NOT support unit at
corner points only!
EVAPORATOR / CONDENSER ASSEMBLY
ASSEMBLY OF SPLIT UNITS (8 - 25 TON MODELS)
- Place the condensing section in the required
location.
-
Carefully position the evaporator section atop the
condensing section. Align all sides, the evaporator
motor wire routing hole, and the refrigerant line
routing holes.
-
Install the securing brackets at all four corners, on
the evaporator/condenser separation joint.
Securing Corner Bracket
- Units are provided with couplings to mate
refrigerant piping between condenser and
evaporator section. Unit with Hot Gas Bypass
option will be provided with additional copper
couplings for the HGBP piping. Remove shipping
bracket securing spun copper ends in the
condenser, this can be discarded and is not
required.
- Cut off spun copper ends on each refrigerant pipe
in evaporator and condenser. Cut pipe to
appropriate length to fit on couplings. Ensure
circuit 1 from condenser connects to circuit 1
piping in evaporator, follow same procedure for
circuit 2.
Do not cross circuits.
-
Follow common A/C service practices by brazing
copper couplings to refrigerant pipe using a flow
of nitrogen gas (max. 1 psi) through the refrigerant
piping to minimize contamination to internal
piping. Otherwise damage to unit refrigeration
components may occur. Use the service gauge
ports for this procedure to introduce nitrogen flow.
Once complete pressure test with nitrogen (500
psig).
-
Evacuate each circuit to at least 350 microns. If
gauge pressure rises above 500 microns in one
minute, evacuation is incomplete or the system
has a leak.
-
Charge circuit(s) to the value indicated on the unit
nameplate or see section ‘Start-Up and
Operation’.
Corner Bracket