Table of Contents
Advertisement
Ice Machine and Drink Machine Remote Circuits
Each MAC-7 and MAC-8 condenser is equipped with two remote circuits for use with the stores ice
machine and/or drink machine. These circuits are factory charged with nitrogen and sealed with quick
connect fittings (1/2" for entering condenser and 3/8" for leaving condenser). Each circuit has a BTUH
capacity of
18,500
BTUH (at 10F TD), an internal volume of 155 cubic inches and has approximately 667
CFM of air flow.
Electrical
Electric power supply must match the condensing unit power requirements indicated on the unit data
plate. The typical wiring diagram is provided in this manual. A system wiring diagram is located on the
inside of the electrical box cover. All field wiring may enter the electrical box through the holes provided in
the side of the box. All field wiring should be done in a professional manner, in accordance with any and
all governing codes. Double check all wiring connections, including factory terminals, before start-up of
condensing unit.
Refrigerant Lines
Refrigeration lines must be properly sized. For line sizing data see Table 3 below. Horizontal suction lines
should be sloped toward the compressor at least 1/2" every 10 feet to insure good oil return. All vertical
suction risers should be trapped at the bottom. Certain installations may require multiple P-traps which
should be placed one every 15 to 20 feet. Insulate all suction lines with at least 3/4" thick Armaflex
insulation. Insuslate the indoor portion of liquid line with at least ½" thick Armaflex to prevent
condensate water dripping on ceilings during defrost.
Appropriate Line Sizes
Table 3.
Connection
System
Room
Suct
MAC-7,8
Cooler
7/8"
MAC-7
Freezer
7/8"
MAC-8
Freezer
7/8"
MAC-8C
Freezer
7/8"
Note: P-trap and vertical suction riser longer 20ft should be one size down than the horizontal suction pipe.
It is recommended that all brazed joints be made with silver alloy-type solders. A small amount of dry
nitrogen should be fed into the tubing during brazing operations to minimize formation of scale and
oxidation inside the tubing. Also, use care to keep tubing free of foreign matter and moisture. Purge the
pipe with high pressure dry nitrogen before brazing the last joint. Remove all remaining flux from the joints
after brazing. Remote refrigeration must be installed in accordance with all governing codes. Copper
tubing must be refrigeration grade, ACR or in accordance with all governing codes.
Max.
Suction Line*
Liq.
Riser
< 75
>75', < 150'
3/8"
7/8"
7/8"
1/2"
1 1/8"
1 1/8"
5/8"
1 1/8"
1 1/8"
5/8"
1 1/8"
1 1/8"
>150'
< 75
Consult
7/8"
3/8"
Factory
Consult
1 1/8"
1/2"
Factory
Consult
1 1/8"
5/8"
Factory
Consult
1 3/8"
5/8"
Factory
Liquid LIne
>75', < 150'
>150'
Consult
3/8"
Factory
Consult
1/2"
Factory
Consult
5/8"
Factory
Consult
5/8"
Factory
9
Hide quick links:
Advertisement
Table of Contents
