Shipping And Packing List; Requirements; General - Lennox LGH180H Installation Instructions Manual

Shipping and Packing List

Package 1 of 1 contains:
1- Assembled unit
Check unit for shipping damage. Receiving party should
contact last carrier immediately if shipping damage is found.
IMPORTANT - Hot gas reheat units require a specific
field-provided and installed humidity sensor.

General

These instructions are intended as a general guide and
do not supersede local codes in any way. Authorities
having jurisdiction should
installation.
The LGH156H gas/electric packaged rooftop unit is
available in 260,000 & 360,000 Btuh heating input. The
LGH180H/U, 210H, 240H/U, & 300S gas/electric
packaged rooftop units are available in 260,000,
360,000, or 480,000 Btuh heating inputs.
The LCH156H, 180H/U, 210H, 240H/U, & 300S cooling
packaged rooftop unit is the same basic design as the
LGH unit except for the heating section. Optional electric
heat is factory- or field-installed in LCH units.
LGH and LCH156H, 180H, 210H, 240H, & 300S units
have identical refrigerant circuits with respective 13, 15,
17‐1/2, 20 and 25 ton cooling capacities. 156H, 180H and
210H units contain three compressors; 240H and 300S
units contain four compressors.
LGH and LCH180U & 240U ultra high efficiency units
have identical refrigerant circuits with respective 15 and
20 ton cooling capacities. Ultra high efficiency units
contain four compressors; compressor 1 & 2 are tandem
and compressor 3 & 4 are tandem.
Standard and high efficiency units come standard with
a lightweight, all-aluminum condenser coil. Standard
and high efficiency units are available with an optional,
factory-installed fin/tube condenser coil. Ultra high
efficiency units are equipped with fin/tube condenser
coils.
Standard and high efficiency units are available with an
optional hot gas reheat coil which provides a
dehumidifying mode of operation. Refer to Reheat
Operation section.
Units equipped with a supply air inverter are available.
Inverters are standard on ultra high efficiency units and
optional on standard and high efficiency units. The blower
will operate at lower speeds when demand is low and
increase to higher speeds when demand is high. Refer to
Inverter Start-Up section.
LGH/LCH156, 180, 210, 240, 300S
be consulted before
Page 6
Units use R410A, an ozone-friendly HFC refrigerant.
Refer to the Cooling Start-Up section for precautions
when installing unit.
WARNING
Electric shock hazard and danger of
explosion. Can cause injury, death or
product or property damage. Turn off
gas and electrical power to unit before
performing
servicing operations on the unit. Follow
lighting instructions attached to unit
when putting unit back into operation
and after service or maintenance.

Requirements

See figure 1 for unit clearances.
UNIT CLEARANCES
180H UNIT SHOWN
Optional
Outdoor
Air Hood
D
A
FIGURE 1
1 Unit
A B
in.(mm) in.(mm)
Clearance
Service 60 36
Clearance (1524) (914)
Clearance to
36
Combus­ 1 (25)
(914)
tibles
Minimum
36 36
Operation
(914) (914)
Clearance
Note - Entire perimeter of unit base requires support when elevated above
mounting surface.
1 Service Clearance - Required for removal of serviceable parts.
Clearance to Combustibles - Required clearance to combustible material
(gas units).
Minimum Operation Clearance - Required clearance for proper unit operation.
any maintenance
C
B
C D Top
in.(mm) in.(mm) Clearance
36 66 Unob­
(914) (1676) structed
Unob­
1 (25) 1 (25)
structed
36 41 Unob­
(914) (1041) structed
or