2
Specifications subject to change without notice.
508 01 1603 01
PRE-INSTALLATION
1. The power supply (v, Ph, and Hz) must correspond to
that specified on unit rating plate.
2. The electrical supply provided by the utility must be
sufficient to handle load imposed by this unit.
3. Refer to the General Installation section and Fig. 1-3
for locations of electrical inlets, condensate drain,
duct connections, and required clearances before
setting unit in place.
4. This installation must conform with local building
codes and with the NEC (National Electrical Code) or
ANSI (American National Standards Institute)/NFPA
(National Fire Protection Association) latest revision.
Refer to provincial and local plumbing or wastewater
codes and other applicable local codes.
Moving and Storage
To transfer unit from truck to storage site, use a fork truck.
Do not stack units more than 2 high during storage. If unit is
to be stored for more than 2 weeks before installation,
choose a level, dry storage site free from vibration. Do not
remove plastic wrap or skid from unit until final installation.
Rigging
All FAS/FHS units can be rigged by using the shipping skid.
Units are shipped fully assembled. Do not remove shipping
skids or protective covering until unit is ready for final place-
ment; damage to bottom panels can result. Use slings and
spreader bars as applicable to lift unit.
INSTALLATION
General
Allow the following clearances for service access and
airflow:
• Rear: 3 ft (914 mm) [2
1
/
2
ft (762 mm) with electric
heat accessory]
• Front: 2
1
/
2
ft (762 mm)
• Right side: 2
1
/
2
ft (762 mm)
• Left side: 2
1
/
2
ft (762 mm)
For units equipped with an economizer, refer to the acces-
sory installation instructions for additional clearance require-
ments. Be sure floor, wall, or ceiling can support unit weight
(Tables 4 – 11). See Fig. 1-3 for dimensions.
Uncrating
Move unit as near as possible to final location before remov-
ing shipping skid.
Remove metal banding, top skid, and plastic wrap. Examine
unit for shipping damage. If shipping damage is evident, file
claim with transportation agency. Remove base skid just pri-
or to actual installation.
Check nameplate information against available power sup-
ply and model number description in Fig. 4.
NOTE: Be sure to remove the styrofoam shipping pad from
the thermostatic expansion valve (TXV). Verify that it has
been removed. See Fig. 5.
Accessories
Refer to instructions shipped with each accessory for specif-
ic information.
Rated Indoor Airflow (cfm)
Tables 1-3 list the rated indoor airflow used for the AHRI
efficiency rating for the units covered in this document.
There is no matched pair available for size 300 and 336
models.
CAUTION
CUT HAZARD
Failure to follow this caution may result in personal
injury.
Sheet metal parts may have sharp edges or burrs. Use
care and wear appropriate protective clothing, safety
glasses and gloves when handling parts and servicing
air conditioning equipment.
CAUTION
UNIT OPERATION HAZARD
Failure to follow this caution could cause equipment
damage.
Ensure voltage listed on unit data plate agrees with elec-
trical supply provided for the unit.
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage.
All panels must be in place when rigging. Unit is not de-
signed for handling by fork truck when packaging is re-
moved.
If using top crate as spreader bar, once unit is set, care-
fully lower wooden crate off building roof top to ground.
Ensure that no people or obstructions are below prior to
lowering the crate.
Table 1 — CAS (Single Circuit) with FAS
MODEL NUMBER
FULL LOAD AIRFLOW (CFM)
CAS072*A/B - FAS072
2400
CAS072*G/H - FAS072
2625
CAS090*G/H - FAS091
3000
CAS091 - FAS091
3000
CAS121 - FAS120
4000
CAS151 - FAS150
4375
CAS181 - FAS180
6000
CAS241 - FAS240
8300
Table 2 — (Dual Circuit) with FAS
MODEL NUMBER
FULL LOAD AIRFLOW (CFM)
CAS120 - FAS120
4000
CAS150 - FAS150
4400
CAS180 - FAS180
6000
CAS240 - FAS240
8300
Table 3 — CHS with FHS
MODEL NUMBER
FULL LOAD AIRFLOW (CFM)
CHS072*A/B - FHS072
2400
CHS072*G/H - FHS072
2400
CHS091*A/B - FHS091
3000
CHS091*G/H - FHS091
2625
CHS121*A/B - FHS120
3000
CHS121*G/H - FHS120
3000
CHS180 - FHS180
6000
CHS240 - FHS240
7400
