Tyler Refrigeration NSSD Installation Procedures, Nssd, Tyler Refrigeration, Carpentry Procedures

NSSD Tyler Refrigeration

INSTALLATION PROCEDURES

Carpentry Procedures

Case Line-Up

NOTE

The NSSD cases are shipped on casters that are replaced with adjustable legs during case line-up and installation.

See the “General-UL/NSF I&S Manual” for the proper case line-up procedures.

Case Pull-Up Locations

All NSSD models have four pull-ups at each end of the case. Pull-ups A, B, C and D are located as shown and should be installed and tightend starting with A and finishing with D.

See “General-UL/NSF I&S Manual” for line- up assembly instructions.

Electrical Procedures

Electrical Considerations

CAUTION

Make sure all electrical connections at com- ponents and terminal blocks are tight. This prevents burning of electrical terminals and/or premature component failure.

NOTE

The NSSD has two raceway locations that can house the electrical wiring, components and terminal blocks. All components and wiring can be located in either the lower front or the lower rear of the case.

Case Fan Circuit

This circuit is to be supplied by an uninterrupt- ed, protected 120V circuit. The case fan circuit is not cycled, except when equipped for gas defrost. On gas defrost cases the fan circuit is controlled by a 50/40 klixon.

NOTE

With gas defrost, the fans will not start until the coil temperature reaches 40°F at the fan delay thermostat.

Fluorescent Lamp Circuit

Case lighting is supplied by T-8 electronic ballast lights. It is controlled by a light switch in each case. The standard lighting is 1-row of T-8 canopy lights. NSSD models also offer up to 3 rows of optional T-8 shelf lights.

Anti-Sweat Heater Circuit

NSSD cases have three anti-sweat heaters. One in the top light assembly, one in the front glass trim rail and one in the front glass retain- er. All anti-sweat heaters are wired directly to the main power supply so they can operate at all times.

Page 6 March, 2002