Carrier ZONE-MIZER 50ME - Manual (Page 2)

No hot decks. . .no cold decks. . .
no zoning dampers. . .no energy waste!
It’s what you don’t get with Carrier’s
Zone-Mizer Modular Multizone unit
that sets it apart from all the others.
You don’t get hot decks or cold decks
because the Carrier design gives each
zone module its own cooling coil and
heating section. Each zone module
operates independently. One unit can
heat, cool, dehumidify, reheat, and
ventilate up to 12 different zones simul­
taneously. All this means real energy
savings. . .there’s no wasteful duplica­
tion of effort as in hot deck/cold deck
units. For still more energy savings,
Zone-Mizer provides up to 3 steps of
electric heat or gas heat with an inter­
mittent pilot ignition in every zone.
Something else you don’t get. . .
zoning dampers. Since the Carrier de­
sign doesn’t have hot and cold decks, it
doesn’t need zoning dampers. By elimi­
nating them from the picture, you
eliminate the adjustments, service, and
operating problems that go along with
zoning dampers.
Five sizes, offering capacities to 37
tons, provide equipment flexibility and
economy. One large unit may serve
where 2 units were required before; or
units of different sizes may be mix/
matched to deliver the heating/cooling
capacity required in a specific applica­
tion. And the choice of gas, elecfric or
hot water/glycol coils allows you to
select a unit that can deliver maximurn
operating economy and convenience by
taking advantage of an already available
heating plant or favorable area fuel
rates.
When specifying a multizone unit,
choose the one that makes a point of
doing something about installation
problems. . .the Carrier Zone-Mizer
Modular Multizone. It’s a sturdy, one-
piece unit — factory-wired, piped, and
charged. It arrives ready to be set in
place on the specially designed roof
curb. Make the power and control con­
nections and that’s it. Initial adjust­
ments are trouble free — you won’t
even need a factory engineer at start­
up. The total package carries the UL
label or is design certified by AGA.
1 Etched solid copper circuit
panels have interchangeable plug-in
relays to minimize parts stocking Cir­
cuit breakers that may be used as dis­
connect switches, terminal boards to
simplify installation of accessories, a
control circuit shutoff switch and 24-
volt controls are all standard.
Motorized outdoor air inlet
damper — A simple rheostat adjust­
ment on the unit (or on the optional re­
mote control panel) sets the damper to
control the amount of outdoor air
admitted.
3 Fused 115-volt convenience out­
let in the control box provides power at
the unit for work lights and small power
tools.
4 Motormaster® solid-state con­
denser fan speed control permits
year-round operation of refrigeration
system down to -20 F ambient.
5 Dependable cooling — Each ser­
viceable hermetic compressor system
has cylinder unloaders for capacity con­
trol and electric power savings. Crank­
case heaters, accumulators, filter driers
and low-ambient starting controls are
also standard.
Time Guard® electrical circuit pre­
vents rapid cycling of the compressor if
occupant tampers with the thermostat.
Compressor cannot short-cycle on a
safety device, such as the low-pressure
switch, should someone forget to clean
the air filters.
Capacity control permits a wide oper­
ating range. During light loads the com­
pressor automatically unloads to re­
duce operating costs and maintain
steady compressor operation. When
the load drops below the minimum
unloader stage, the hot gas bypass con­
trol provides continuous cooling
operation.
Built-in safety controls prevent
damage to unit components. Included
are high- and low-pressure switches,
overtemperature limit switches and
overload protection for all motors.
6 Polyurethane foam sandwich
access panels are of Weather Armor
galvanneal steel. Their thermal resis­
tance prevents sweating at outdoor
conditions up to 77 F dew point And
they are strong enough to support a
250-pound man.
DG