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II. DIMENSIONS
• k
It is very important that the ducts for a serf-contained system be properly sized, installed, sealed,
and insulated for the best performance of the system. It is recommended that both the supplyand
the retum duct be insulated (2") when installed in an unconditionedarea. Where the supply duct
is exposed to the outdoor temperatures, vapor barrier material should be used. All duct work
should be installed in accordance with ASHRAE or NAHB.
HP MODELS
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I
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MODEL A B C D E
HP181D/F 43 1/4 28/323/8 24 20 14 1/2
HP241F 43 1/4 32 3/8 24 21 14 1/2
HP301F/H 43 114 32 3/8 24.- 21 14 112
HP361F/H 49 1/4 33 3/4 30 21 20 1/2
HP421F 49 1/4 33 3/4 30 21 20 1/2
HP421H 49 1/4 33 3/4 30 21 20 1/2
HP481F2/H 57 3/4 44 3/8 30 1/4 21 16 1/4
HP601F2 57 3/4 44 3/8 30 1/4 32 16 1/4
HP601H 57 3/4 44 3/8 34 1/4 32 16 1/4
HP662A 57 3/4 44 3/8 34 114 34 23 112
Fig. 1
F G H J K L
6 1 1 4/6 3/1( 1 112
2 1/2
6 1 1 55/8 11/2 !21/2
i
6 1 1 55/8 11/2 21/2
6 1 1 63/8 11/2 21/2
6 1 1 63/8 11/2 21/2
6 1 1 63/8 11/2 21/?
10 1 1 63/16 2 23/4
10 1 1 63/16 13/4 23/4
10 51/4 1 63/16 1 3/4 23/4
7 1 1 51/8 13/4 23/4
_lJ. III. POWER SUPPLY & WIRING
Pages 11, 12 & 13 show typical wiring diagrams for the various units. However, each unit will have its
appropriate wiring diagram attached to the access panel of the wiring control section. All wiring and
fusing must comply with local and national electrical code requirernents.
The 24 volt control circuit connections are made at the rightside of the panel (See fig. 1). The main
power connections are made at the "L" terminals of contractor, through knockoutin side ofunit. These
connections must be tight and elect'ricallysecure. A fused disconnect must be weather tight. When
the unit is outdoors,the fused disconnect must be installedat the unit location. The fuse(s) shouldbe
dual element type. Fuse and ampacity ratingsare listed inthe table on page 3 and also on the rating
plate on the unit.
CAUTION: Unit must always be grounded with a suitable ground connection.
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