Rheem RHPD Series, Installation Instructions Manual

Page: 38 / 84

38
VI. INSTALLATION
A. GENERAL
1. PRE-INSTALLATION CHECK-POINTS
Before attempting any installation, the following points
should be carefully considered:
a. Structural strength of supporting members.
(rooftop installation)
b. Clearances and provision for servicing.
c. Power supply and wiring.
d. Air duct connections.
e. Drain facilities and connections.
f. Location for minimum noise.
2. LOCATION
These units are designed for outdoor installations. They
can be mounted on a slab or rooftop. They are not to be
installed within any part of a structure such as an attic,
crawl space, closet, or any other place where condenser
air flow is restricted or other than outdoor ambient con -
ditions prevail. Since the application of the units is of the
outdoor type, it is important to consult your local code
authorities at the time the first installation is made.
B. OUTSIDE SLAB INSTALLATION (Typical outdoor slab
installations are shown in Figures 5 and 6.)
1. Select a location where external water drainage cannot
collect around the unit.
2. Provide a level concrete slab extending 3” [76.2 mm]
beyond all four sides of the unit. The slab should be
sufficient above grade to prevent ground water from
entering the unit. IMPORTANT: To prevent transmission
of noise or vibration, slab should not be connected to
building structure.
3. The location of the unit should be such as to provide
proper access for inspection and servicing.
4. Locate unit where operating sounds will not disturb
owner or neighbors.
5. Locate unit so roof runoff water does not pour directly on
the unit. Provide gutter or other shielding at roof level.
Do not locate unit in an area where excessive snow drift-
ing may occur or accumulate.
6. It is essential that the unit be elevated above the base
pad to allow for condensate drainage and possible
refreezing of condensation. Provide a base pad which
is slightly pitched away from the structure. Route con-
densate off base pad to an area which will not become
slippery and result in personal injury.
7. Where snowfall is anticipated, the height of the unit
above the ground level must be considered. Mount unit
high enough to be above average area snowfall and to
allow for proper condensate drainage.
C. CLEARANCES
The following minimum clearances must be observed for
proper unit performance and serviceability.
1. Unit is design certified for application on combustible
flooring with 0” minimum clearance.
2. See Figure 5 for illustration of minimum installation-ser-
vice clearances.
ST-A1273-19-00
*
(
)
+
,
48 [1219]
24 [609]
48 [1219]
24 [609]
60 [1524]
A - FRONT
B - CONDENSER END
C - DUCT END
*D - FILTER SIDE
E - ABOVE
9,*644,5+,+
*3,(9(5*,0UBTTD
36*(;065
*3,(9(5*,:
THE FOLLOWING MINIMUM CLEARACES MUST
BE OBSERVED FOR PROPER UNIT PERFOMANCE
AND SERVICEABLILITY.
1
2
18” [457 mm] MINIMUM IF DRAINPAN
WILL NOT BE REMOVED.
48” [1219 mm] MINIMUM IF ECONOMIZER IS INSTALLED. 2
1
VERTICAL
CLEARANCE
FIGURE 5
PACKAGED HEAT PUMP
OUTSIDE SLAB INSTALLATION, BASEMENT OR
CRAWL SPACE DISTRIBUTION SYSTEM
67$
FIGURE 6
PACKAGED HEAT PUMP
OUTSIDE SLAB INSTALLATION, CLOSET DISTRIBUTION
SYSTEM. SLAB FLOOR CONSTRUCTION
RETURN
DUCT*
SUPPLY
AIR DUCT*