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ZH 036, 048, 060
WARNING
Electric shock hazard and danger of
explosion. Can cause injury, death or
product or property damage. Turn off
electrical power to unit before
performing any maintenance or
servicing operations on the unit.
IMPORTANT
The Clean Air Act of 1990 bans the intentional vent
ing of refrigerant (CFC's and HCFC's) as of July 1,
1992. Approved methods of recovery, recycling or
reclaiming must be followed. Fines and/or incar
ceration may be levied for non-compliance.
Unit Support
NOTE - Securely fasten roof frame to roof per local codes.
ZH 036, 048, 060 units are installed on Z1CURB frames.
A - Downflow Discharge Application
Roof Mounting with Z1CURB
1- The Z1CURB roof mounting frame must be installed,
flashed and sealed in accordance with the
instructions provided with the frame.
2- The Z1CURB roof mounting frame should be square
and level to 1/16” per linear foot (5mm per linear
meter) in any direction.
3- Duct must be attached to the roof mounting frame
and not to the unit; supply and return plenums must
be installed before setting the unit.
Installer's Roof Mounting Frame
Many types of roof frames can be used to install the unit,
depending upon different roof structures. Items to keep
in mind when using the building frame or supports are:
1- The unit base is fully enclosed and not insulated, so
an enclosed, insulated frame is required.
2- The frames or supports must be constructed with
non-combustible materials and should be square and
level to 1/16” per linear foot (5mm per linear meter)
in any direction.
3- Frame or supports must be high enough to prevent
any form of moisture from entering unit.
Recommended minimum frame height is 14”
(356mm).
4- Duct must be attached to the roof mounting frame
and not to the unit. Supply and return plenums must
be installed before setting the unit.
5- Units require support along all four sides of unit base.
Supports must be constructed of steel or suitably
treated wood materials.
NOTE-When installing unit on a combustible surface for
downflow discharge applications, the Z1CURB roof
mounting frame is required.
B - Horizontal Discharge Applications
1- Specified installation clearances must be maintained
when installing units. Refer to figure 1.
2- Top of support slab should be at least 4” (102mm)
above the finished grade and located so no run-off
water from higher ground can collect around the unit.
3- Units require support along all four sides of unit base.
Supports must be constructed of steel or suitably
treated wood materials.
Duct Connection
All exterior ducts, joints, and openings in roof or building
walls must be insulated and weatherproofed with flashing
and sealing compounds in accordance with applicable
codes. Any duct passing through an unconditioned space
must be insulated.
In downflow applications, do not drill or punch
holes in base of unit. Leaking in roof may occur if
unit base is punctured.
CAUTION
!
Rigging Unit For Lifting
1- Connect rigging to the unit base using both holes in
each corner. See figure 2.
2- All panels must be in place for rigging.
3- Place field‐provided H‐style pick in place just above
top edge of unit. Frame must be of adequate
strength and length. (H-style pick prevents damage
to unit.)
ZH
Lifting Point Should
Be Directly Above
Center Of Gravity.
CAUTION: DO NOT
WALK ON UNIT.
UNIT
WEIGHT*
LBS. KG.
*Maximum weight with all available
installed accessories.
664
301
FIGURE 2
