Bryant 541A - Manual

CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
I. Step 1 — Complete Pre-Installation Checks . . . . . 1
II. Step 2 — Rig and Mount Unit . . . . . . . . . . . . . . . . . 1
III. Step 3 — Complete Refrigerant Piping
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
IV. Step 4 — Complete Electrical Connections . . . . . 8
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-12
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-14
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14,15
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-19
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . CL-1, CL-2
SAFETY CONSIDERATIONS
Installing, starting up, and servicing this equipment can be
hazardous due to system pressures, electrical components and
location of equipment (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should
install, start up, and service this equipment.
Untrained personnel can perform basic maintenance func-
tions, such as cleaning coils and filters and replacing filters.
All other operations should be performed by trained service
personnel.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
• Follow all safety codes.
• Wear safety glasses and work gloves.
• Keep a quenching cloth and fire extinguisher handy.
• Use care in handling, rigging, and setting bulky
equipment.
WARNING: To prevent electric shock, be sure power
to equipment is shut off before performing mainte-
nance or service.
INSTALLATION
IMPORTANT: Follow unit location, height proximity, and pip-
ing requirements in this booklet carefully to enhance system
efficiency and to avoid system failure. Read entire booklet be-
fore starting installation.
I. STEP 1 — COMPLETE PRE-INSTALLATION CHECKS
A. Uncrate Unit
Remove unit packaging except for the top skid assembly, which
should be left in place until after the unit is rigged into
position.
B. Inspect Shipment
File claim with shipping company if shipment is damaged or
incomplete.
C. Consider System Requirements
• Consult local building and electrical codes for special in-
stallation requirements.
• Allow sufficient space for airflow clearance, wiring, refrig-
erant piping, and servicing unit. See Fig. 1 and 2.
• Ensure unit weight will be properly supported. See
Table 1.
• Unit may be mounted on a level pad directly on the base
channels or mounted on raised pads at support points. See
Fig. 3 and Table 2 for weight distribution based on recom-
mended support points.
NOTE: If vibration isolators are required for a particular in-
stallation, use data in Table 2 to make proper selection.
• Accessory mounting legs (Part No. 309273-227) are recom-
mended for elevation of unit for improved air circulation
and better condensate drainage. Legs also minimize inter-
ference from ice build-up, snow, leaves, and debris. See
Fig. 1.
II. STEP 2 — RIG AND MOUNT UNIT
CAUTION: Be sure unit panels are securely in place
prior to rigging. Be careful rigging, handling, and in-
stalling unit. Improper unit location can cause system
malfunction and material damage. Inspect base rails for
any shipping damage and make sure they are fastened
securely to unit before rigging.
A. Rigging
Units are designed for overhead rigging only. For this pur-
pose, the transverse base rails extend beyond sides of unit,
with holes provided in end plates to attach clevis for secur-
ing cables. Rig with top skid packaging assembly in place to
prevent unit damage by rigging cable. For coil face protec-
tion, place plywood sheets against the sides of unit, behind
cables. Run cables to a central suspension point so that the
angle from the horizontal is not less than 45 degrees. Raise
and set unit down carefully.
If it is necessary to roll unit into position, mount unit on field-
supplied longitudinal rails using a minimum of 3 rollers. AP-
PLY FORCE TO THE RAILS, NOT THE UNIT. If unit is to
be skidded into position, place it on a large pad and drag the
pad. DO NOT APPLY ANY FORCE TO THE UNIT.
Raise from above to lift unit from rails or pad when placing
unit in final position.
installation, start-up and
service instructions
SPLIT SYSTEM
HEAT PUMP UNITS
541A
Sizes 120,180
10 to 15 Tons
Cancels: II 541A-120-1 II 541A-120-2
12/15/98