AIR HANDLER INSTALLATION Packaging Removal
Remove the shipping crate and User’s Manual from the equipment.Take care not to damage the tubing connections when removing the crate.
Minimum Clearance Requirements
This air handler must be installed with ample clearance for easy access to the air fi lters, blower assembly, and, controls. Allow 24 inches minimum clearance from the front of the motor and refrigerant access panels for service and maintenance. However 36 inches is strongly recommended.
Horizontal Mounting Applications
B5SM air handlers can be suspended from support rods at each corner and are supplied with the required
CAUTION:
When raising the
Vertical Mounting Applications
Verify the unit is level and there is adequate clearances to service the unit and provide the minimum 2” trap needed for the condensate drain. See Figure 5 (page 11).
Condensate Drain
B5SM air handlers have condensate drain ports on both sides of the unit, and may be confi gured for drainage from the left, right or both sides (Figures 4 or 5). Connection to the drains can be made with a ¾” threaded PVC adapter.
Units are configured at the factory with the service side drain open and a threaded PVC drain plug installed on the opposite side. Each drain line installed requires its own drain trap. To ensure proper drainage, the installed drain trap(s) must provide a minimum trap of 2 inches. Note: It is recommended that a secondary drain pan be used when the unit is hung above an enclosed ceiling.
Connecting Refrigerant Tubing
WARNING:
NITROGEN
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HEALTH | 1 |
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FLAMMABILITY | 0 |
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REACTIVITY | 0 |
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0 Minimal Hazard | 1 Slight Hazard |
Evaporator Coils are factory shipped with a nitrogen charge. Avoid direct face exposure or contact with valve when gas is escaping.Always ensure adequate ventilation is present during the depressurization process.Any uncertainties should be addressed before proceeding.
•When connecting refrigerant linesets together, it is recommended that dry nitrogen be fl owing through the joints during brazing.This will prevent internal oxidation and scaling from occurring.
•Refrigerant tubing should be routed in a manner that minimizes the length of tubing and the number of bends in the tubing.
•Refrigerant tubing should be supported in a manner that the tubing will not vibrate or abrade during system operation.
•Tubing should be kept clean of foreign debris during installation.
•Every effort should be made by the installer to ensure that the fi eld installed refrigerant containing components of the system have been installed in accordance with these instructions and sound installation practices to insure reliable system operation and longevity.
•Always refer to the installation instructions supplied with the outdoor unit for piping requirements. The suction and liquid lines must be sized in accordance with the condensing unit specifications.
•If precise forming of refrigerant lines is required, a copper tubing bender is recommended.Avoid sharp bends and contact of the refrigerant lines with metal surfaces.
•A fi lter dryer is provided with the unit and must be installed in the liquid line of the system.If the installation replaces a system with a fi lter dryer already present in the liquid line, the fi lter dryer must be replaced with the one supplied with the unit. The fi lter dryer must be installed in strict accordance with the manufacturer’s installation instructions.
•B5SM air handlers are supplied with a direct expansion refrigerant coil and thermostatic expansion valves. Refrigerant line connections are located on the motor side (service side) of cabinet and require sweat connections.
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