Jackson Systems Comfort System Z-300-HC Installation Instructions Manual

ZONE 1

CALLING

Comfort System

TM

Installation Instructions for Z-300-HC Zone Control Panel

Heat / Cool Auto Changeover - Cooling Priority

POWER

HEAT

COOL

FAN LED INDICATES

WHEN A

THERMOSTAT IS

CALLING FOR FAN.

ZONE 2

CALLING

ZONE 3

CALLING

COOLING
PRIORITY

WYG RX

WYG RC

SINGLE STAGE

HEAT / COOL

THERMOSTAT

WYG RXDD

123456

ZONE 1

DD

DAMPER MOTOR

0.36 AMPS 10 VA

T5

ZONE 2

WYG RXDD

D

Installation Notes:

To install the panel, first slide the PC
board out of its base and screw the
base to a flat surface next to the
HVAC equipment. The PC board
should be reinstalled by centering it
over the base and pushing firmly.

Connect only 24 Vac to Control
Panel.

The control panel requires a
separate 24 Volttransformer.

No special wire is required.

The thermostat and motorized
dampers may be located up to 300
feet from the control panel when
using 18 gauge thermostat wire.

The left fuse (4 Amp) protects the
relay contacts. The right fuse (4
Amp) protects the printed circuit
board.

Zone dampers are powered
closed / spring return open.

If condensing unit is not equipped
with short cycle protection timer,
(TD-5) should be installed.

The two wires from the condensing

Comfort System™

Z-300-HC

PATENTED 5,944,098

ZONE 3

WYG RXDD

WIRE THE SAME

AS ZONE 1

unit should be connected to the ‘Y’
and transformer common terminals
at the furnace.

The low limit (FS-38) should be
wired to the ‘LL’ terminals on the
panel (remove jumper). The
compressor will shut off when low
limit trips out.

The high limit (HL-170) should be
wired to the ‘HL’ terminals on the
panel (remove jumper). The furnace
will shut off when high limit trips out.

A 40 VA transformer will power the
panel and up to four (4) dampers.
A 75 VA transformer will power the
panel and up to seven (7) dampers.

Up to three (3) dampers can be
connected in parallel. A total of no
more than seven (7) dampers may
be connected to the system. A
system may be a single panel or
multiple panels.

If more than three (3) zones are
required, two additional panels can
be used to control up to a total of
nine (9) zones. T5 terminal strip is
used only when more than three
zones are required.

WYG R HXLL LL HL HL

WYG RC

HVAC UNIT

TERMINAL

STRIP

HVAC UNIT

JUMPERS

LOW

LIMIT

HIGH
LIMIT

FAN

4 AMP

4 AMP

CONTACTS

4 AMP FUSES

HXW Y G R LL LL HL HL

120/24 VAC

TRANSFORMER

PC BOARD

WHEN GREEN ZONE

LEDS ARE ON, THOSE

ZONES ARE CALLING

FOR HEATING OR COOLING

Label the dampers, damper wires
and thermostat wires with the zone
number and the area they serve.

Specifications:

Panel Dimensions:
Height: 5.0 inches
Width: 10.0 inches
Depth: 2.0 inches

Mounting:
2 back plate screws

OperatingAmbientTemperature:

-20° to 160° F

Power Supply:
24 Vac 40VA/ 75 VAtransformer

Terminal Designations:

W = Heat
Y = Cool
G = Fan
R = Hot 24Volt
X = Common
D = Damper
LL = Freeze Stat
HL = High Limit
H = Hot 24Volt
X = Ground or Common

Zone Control Made Simple™

5418 Elmwood Avenue, Indianapolis, IN 46203-6025
Toll Free: 888.652.9663 Fax: [phone]
www.jacksonsystems.com

Comfort System

TM

Installation Instructions for Z-300-HC Zone Control Panel

Heat / Cool Auto Changeover - Cooling Priority

Sequence of Operation:

Comfort System™ is a residential / light commercial zone
control system that allows a single HVAC unit to have upto
three separate zones (nine if three panels are connected
together). Each zone is controlled by its own space
thermostat and motorized zone damper. If any of the zone
thermostats call for heating or cooling, the zones not
calling will have their dampers powered closed, and the
zone(s) calling will have its (their) damper(s) remain open.
The heating or cooling equipment will also be brought on
at the same time. When all zone thermostats are satisfied,
the heating or cooling equipment turns off and all zone
dampers return to the open position to allow for continuous
air circulation.

If one of the zone thermostats is calling for heating and
another zone thermostat is calling for cooling, the cooling
thermostat will take priority and the system will operate in
the cooling mode. When the thermostat that is calling for
cooling is satisfied, the system will change over and take
care of the heating requirement. This is referred to asAuto
Changeover - Cooling Priority

Thermostats:

COMFORT SYSTEM™

PANEL

TRANSFORMER

24 VOLT 40VA

FURNACE

Typical System Layout

ZONE 2

STAT

ZONE DAMPER 2

MIGHT SERVE

BEDROOM AREA

ZONE 1

STAT

ZONE DAMPER 1

MIGHT SERVE

LIVING AREA

The zone control system works with standard, single­stage, heat / cool thermostats. The thermostats can be
either manual or auto changeover.

System Checkout

Verify that all wires have been connected to the proper
terminals and are secure.

Verify that the jumpers across the ‘LL’ and ‘HL’ terminals
were removed before connecting the high and low limits.

The low limit (FS-38) should be wired to the ‘LL’ terminals
on the zone control panel. The high limit (HL-170) should
be wired to the ‘HL’terminals on thezone control panel.

Zone dampers are powered closed and spring return
open. There will be no power on the panel damper
terminals marked ‘D’ and ‘D’ when the damper is in the
open position.

When a green zone LED is on, the zone is calling for
heating or cooling.

To check the system for proper operation, pull the
disconnect for the condensing unit to prevent short
cycling. Next, place all the zone thermostat mode
switches in heat mode and turn down all thermostat set
points. Go to each zone thermostat, one at a time, and
call for heat to verify that the proper zone dampers are
open (and the rest are closed). Turn the zone
thermostat back down before checking the next zone.

Zone Control Made Simple™

5418 Elmwood Avenue, Indianapolis, IN 46203-6025
Toll Free: 888.652.9663 Fax: [phone]
www.jacksonsystems.com

06-1015-021507