7
Rooftop Installation
•
The unit may be installed directly on wood floors or on Class
A, Class B, or Class C roof covering material.
•
To avoid possible personal injury, a safe, flat surface for
service personnel should be provided.
Roof Curb Installations Only:
•
Sufficient structural support must be determined prior to
locating and mounting the curb and package unit.
•
Ductwork must be constructed using industry guidelines.
The duct work must be placed into the roof curb before
mounting the package unit.
•
Curb insulation, cant strips, flashing and general roofing
material are furnished by the contractor.
Roof Curb Installation
RIGGING DETAILS
WARNING
T
O
PR
EVENT
PROP
ERTY D AMAGE, T HE U NIT SHOULD R EMAIN IN A N
UP
RIGHT
PO
SITION DURING ALL RIGGING AND MOVING O
PE
RATIONS.
T
O FACILITATE
LIFTING AND MOVING W HEN A CRANE I S USED,
PL
ACE THE UNIT IN AN
ADEQUATE CABLE SLING.
Important:
If using bottom discharge with roof curb, ductwork should
be attached to the curb prior to installing the unit. Ductwork dimen
-
sions are shown in roof curb installation instructions.
Refer to the Roof Curb Installation Instructions for proper curb in
-
stallation. Curbing must be installed in compliance with the National
Roofing Contractors Association Manual.
Lower unit carefully onto roof mounting curb. While rigging unit,
center of gravity will cause condenser end to be lower than supply
air end.
Rigging
GAS PIPING
IMPORTANT NOTE:
This unit is factory set to operate on natural
gas at the altitudes shown on the rating plate.
WARNING
T
O AVOID
PROP
ERTY D AMAGE,
P
ERSONAL INJURY O R DEATH WHEN E ITHER
USING
PROP
ANE GAS ALONE OR A T HIGHER A LTITUDES, O BTAIN AND INSTALL
THE
PROP
ER C ONVERSION KIT(S).
F
AILURE T O DO S O CAN RESULT I N
UNSATISFACTORY
OP
ERATION AND/OR EQUI
PM
ENT DAMAGE.
H
IGH ALTITUDE
KITS A RE F OR
U
.
S
. INSTALLATIONS ONLY A ND ARE NOT
APPR
OVED F OR U SE
IN
C
ANADA.
The rating plate is stamped with the model number, type of gas and
gas input rating. Make sure the unit is equipped to operate on the
type of gas available. Conversion to LP gas is permitted with the
use of the factory authorized conversion kit LPM-07, for use with
single stage models, or LPM-08, for use with two-stage models.
See table below.
LP Conversion Kit
Model
LPM-07
Single Stage Heating Models
LPM-08
Two-Stage Heating Models
