INSTALLER'S GUIDE
18-HH08D10-2
Page 2
Each zone requires a compatible Comfort Sensor (not
included in this kit) see list below.
CONNECTIONS
▲
WARNING:
SHOCK HAZARD
DISCONNECT POWER SUPPLY BEFORE BEGINNING
INSTALLATION TO PREVENT PERSONAL INJURY OR
DEATH FROM ELECTRICAL SHOCK AND EQUIP-
MENT DAMAGE.
All wiring between the System Controller and system
components (indoor unit, outdoor unit, comfort sensors,
Discharge Air Sensor and optional devices such as a
humidistat, load shedding device, etc.) may be made with
ordinary thermostat wire (#18 AWG minimum).
CAUTION:
Keep this wiring at least one foot away
from large inductive loads such as electronic air
cleaners, motors, line starters, lighting ballasts and
large distribution panels. Failure to follow these
wiring practices may introduce electrical interfer-
ence (noise) which can cause erratic system opera-
tion. All unused thermostat wire to be grounded at
controller end only. Shielded cable is required if the
above wiring guidelines cannot be met. Ground the
shield only to the system controller case.
The System Controller has four low voltage terminal
blocks for making connections to the Comfort Sensors
(
TB1
), Indoor Unit (
TB2
), Outdoor Unit (
TB3
), Discharge
Air Sensor, and optional remote outdoor sensor (
TB4
) .
NOTE: It is imperative that proper polarity be main-
tained in all 24 volt connections (R to R and B to B).
The hookup diagrams on following pages are provided for
the various combinations of single speed, two step, two
compressor, and two separate cooling (only) systems plus
two single speed heat pumps with a split coil (two circuit)
air handle. The four hookup diagrams are:
Figure 7 (Page 8)
Single speed or variable speed indoor unit (furnace or air
handler) with single speed (cooling or heat pump) outdoor
unit (single speed dual fuel heat pump included). No Plus
One kit is required with the single speed dual fuel heat
pump.
Figure 8 (Page 9)
Variable speed indoor unit (furnace or air handler) with:
A - Two step (heat pump* or cooling) outdoor unit.
B - Two compressor (heat pump* or cooling) outdoor
unit in a single cabinet.
C - Two separate (cooling only) outdoor units.
* Dual fuel heat pumps not included (see Figure 9).
It is recommended that a separate 24 volt transformer be
utilized to power the damper motors. When selecting a
transformer, add up the V. A. consumption of all damper
motors, (not watts) and select a transformer rated at that
V. A. value or higher: (preferably, a fused transformer). If
the V. A. consumption of the damper motors is not known,
it is recommended that installer use a value of 12 V. A. per
damper motor. (Typical damper motor V. A. usage varies
from 2.2 to approximately 15 V. A.).
INSPECTION
Check carefully for any shipping damage. This must be
reported to and claims made against the transportation
company immediately. Any missing parts should be re-
ported to your supplier at once and replaced with autho-
rized parts only.
MOUNTING:
The System Controller Kit should be located in a condi-
tioned space if possible or next to the furnace or air
handler. Adequate space in front of the kit must be pro-
vided for installation and service.
When the location has been determined, hold the Enclo-
sure (wiring holes down) at the desired location, (level for
cosmetic reasons only) and mark the location of the
mounting holes on the wall, or other mounting surface.
Carefully drill holes in the wall to accept the appropriate
fasteners. (wood screws, plastic anchors, Molly bolts, etc.)
The first Expander Board is plugged into the right side of
the system controller. The second Expander Board (if
required) plugs into the right side of the first Expander
Board. Secure the second Expander Board with the screws
provided after carefully plugging it in.
The Zone/Bypass Control Cards can be temporarily plugged
into the Expander Boards so that the wiring from the
damper motors may be brought up to each Zone Control
Card with sufficient extra length to allow the Zone Control
Card to be unplugged and turned slightly to expose the
wiring terminals and dip switches.
ZUSTATALMS2
Master Scheduler
ZUSTATALP52
Programmable Comfort Sensor
ZUSTATALS51
Non - Programmable Comfort Sensor
ZUSTATAL031
Non - Programmable Comfort Sensor*
ZZSENSAL011
Remote Analog Temperature Sensor**
* No clock.
** Alone, only when used with ZUSTSTALMS10 Master Scheduler.
Table 1
