Installation - Modine Manufacturing SSD Installation And Service Manual

INSTALLATION

Figure 5.1
Threaded Rod Dimension
Condensate Piping
The unit is supplied with a 3/8" ID flexible hose for
connection to copper or plastic drain piping.
When installing the unit the following points should be
remembered:
1. Maximum pump lift is 30".
2. The highest point in the condensate piping should be as
close to the unit as possible. See Figure 5.2.
Figure 5.2
Condensate Piping
INCORRECT
3. Condensate piping should slope downwards in the
direction of water flow with a minimum gradient of 1" in
100". There must not be any uphill gradients other than
in the first 30" of piping from the unit.
4. When multiple units are connected to a common
condensate drain, ensure the drain is large enough to
cope with the volume of condensate from all units. It is
also recommended to have an air vent in the condensate
piping to prevent any air locks.
5. Condensate piping must not be installed where it may be
exposed to freezing temperatures.
Duct Collars
Branch duct and fresh air duct collars can be attached to the
unit chassis by following the steps below:
1. Up to 2 branch ducts can be attached per unit.
2. Refer to the relevant dimensional drawing on pages 10 to
14 to become familiarized with knock-out hole locations.
3/8"
Threaded Rod < 2"
CORRECT
3. The insulation is pre-cut to aid location and removal of
the relevant section. Rub hand across surface of
insulation to reveal exact location of knock-out.
4. Remove the metal knockout from the chassis.
5. Attach the duct collar to the chassis using self tapping
screws.
6. Replace washable filter with the pleated filter provided
with fresh air duct collar kit.
Note: See Figures 10.1, 11.1, 12.1, 13.1 and 14.1 for
Branch Duct and Fresh Air Duct locations and dimensions.
Piping Installation – SSD and SSH Units
1. SSD and SSH units contain the refrigerant R-410A.
Review the R-410A Material Safety Data Sheet
(MSDS) for hazards and first aid measures.
2. Refrigerant charging should only be carried out by an
EPA-certified air conditioning contractor.
Note: R-410A refrigerant is the only approved refrigerant for
this system.
The unit should be piped up in accordance with good
refrigeration and/or plumbing practices.
The outdoor condensing unit must be connected to the
indoor unit coil using field supplied refrigerant grade (ACR)
copper tubing that is internally clean and dry. Units should
be installed only with the tubing sizes for the approved
system combination as specified in Tables 16.1 and 17.1.
Condensing units are factory charged with refrigerant for a
matching indoor coil plus 15 feet of field supplied lines.
See the installation and maintenance manual provided with
the condensing unit for installation, evacuation and system
charge information.
Piping Installation – Hot/Chilled Water Coils
1. Branch piping to and from the unit should include swing
joints to allow for expansion and contraction of the
piping without placing a strain on the unit coil.
2. Install pipe unions and shut-off valves in lines to and
from each coil to allow maintenance or replacement of
unit without shutting down and draining entire system.
See Figure 6.1.
3. Include a circuit setter in return line for water flow
regulation.
4. A drain valve (hose bib) should also be provided for
each coil line to allow removal of water from the coil if
located in an area subject to freezing.
5. It is advisable to use a pipe line strainer before each
coil.
6. Provide adequate pipe hangers, supports, or anchors to
secure the piping system independently of the unit.
8-504.6
CAUTION
5