Emerson PMAC II Solo, Installation And Operation Manual

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Features Overview • 1
1 Overview
The PMAC II Solo is a solid state, anti-sweat heater
controller designed to dramatically reduce the cost of oper-
ating anti-sweat heaters on low-temperature door-type cas-
es found in most supermarkets.
Normally, anti-sweat heaters operate continuously with
no controls, even though 100% operation is required only
when in-store humidity levels are high. A PMAC II Solo
provides a means for pulsing power to the heaters based on
environmental conditions, so that heaters will be on for less
time during periods where the in-store dewpoint is low.
This reduces operating costs by limiting heater operation,
and increases heater life by limiting heat cycle fatigue since
the heaters are rarely turned off completely.
The PMAC II Solo performs all anti-sweat functions in-
dependently of a central Einstein, E2, or REFLECS con-
troller. The PMAC II Solo uses an Intellecs UC12PG-R
microcontroller mounted within the panel to control of all
anti-sweat heaters channels based on dewpoint (calculated
from relative humidity and temperature inputs) without
need for a central CPC site control system.
The UC12PG-R does not support multiple zone control.
All heaters are controlled by the same setpoint and dew-
point inputs.
1.1. Features
• Full Solid-State Control
• Quiet Operation
• Easily added to existing systems
• Controlled by the store environment (humidity and
temperature)
• Centrally-located panel
• Easy installation
1.2. Installation
This section of the manual covers wiring and installa-
tion for the PMAC II Solo.
1.2.1. Location and Wiring
1. Mount the PMAC II Solo in a central location
such as a motor or electrical room. The panel
should be in an area where there is plenty of
ventilation (e.g., not in a closet). Keep a 6-12
inch clearance on the top and bottom for
proper air flow. The room’s ambient tempera-
ture should always be below 100° F. See
Fig-
ure 1-2
for dimensions.
Figure 1-1 - PMAC II Solo Detail
Figure 1-2 - PMAC II Solo Dimensions
WARNING: For proper cooling, the door
must be closed at times when unit is in opera-
tion.
24.0”
20
.0
”
8.0”
Mounting
Holes
16.75”
17.8”