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If a value of 105 to 110 is selected (second-stage heating is
turned off at this value) then the first-stage high temperature
trip limit is the programmed value plus 5°F (first-stage is
turned off).
If a value of 111 to 155 is selected (second-stage heating is
turned off) then the first-stage high temperature trip limit is the
programmed value plus 20°F (first stage is turned off).
Example 1:
High temperature trip limit selected is 105°F. (Shown as 05 in
controller display.)
Second-stage heat will turn off when duct temperature sensor
measures a temperature greater than 105°F.
First-stage heat will turn off when duct temperature sensor
measures a temperature greater than 110°F.
Example 2: High temperature trip limit selected is 140°F.
(Shown as 40 in controller display.)
Second-stage heat will turn off when duct temperature sensor
measures a temperature greater than 140°F.
First-stage heat will turn off when duct temperature sensor
measures a temperature greater than 160°F.
7. Dual Fuel Setpoint (S-7)
This option is used with a system that has a heat pump and
another heat source (possibly gas) that should not run at the
same time as heat pump. When any heat pump is on, all
auxiliary heat will be off, and vice versa.
NOTE: The auxiliary heat must always have greater heating
ability than the heat pump at low outdoor temperatures for this
option to have any value.
NOTE: If Dual Fuel setpoint is set to 0, then this option is
disabled. If Dual Fuel option is used, an outside air temperature
sensor or refrigerated air sensor must be used.
When dual fuel setpoint variable is set to outdoor temperature
(10°F to 60°F) that is the crossover point between running
heat pump or using auxiliary heat as the preferred method of
heating.
The setpoint is used only when the first stage of heating is
brought on. If outdoor temperature is above setpoint, heat
pump (Y1) is energized. If outdoor temperature is below
setpoint, auxiliary heat (W1) is used. If heat pump is started
and outdoor temperature goes below setpoint, dual fuel option
is not used for that heating cycle.
PROGRAMMABLE OPTIONS-TOGGLES
Turn zone selector dial to position T. (See Fig. 18.) The controller
display shows setting number and its value.
The upper left 2 digits show setting number while the right side
shows the value of ON or OFF.
Press the COOL up or down setpoint buttons to change toggle
number and the HEAT up or down setpoint buttons to change
status of toggle. (See Table 11.)
Step 12—Wiring Diagrams
Refer to Tables 7 and 8 for wiring diagram reference information.
Step 13—Start-Up
1. Verify that zone number for remote room sensors and corre-
sponding zone damper wire connections are the same in the
Comfort Zone Center.
2. Check that AC power wires (dampers and transformer) are
kept away from DC wires (remote room sensors, 4 zone
controller, communication bus) leading up to, and in the
Comfort Zone Center.
3. Check location of 4 zone controller and remote room sensors
to make sure that they are not near heat producing devices
such as lamps, sunlight, and appliances.
4. Make sure that the 3 wire communication bus cable for the 4
zone controller is not run in same conduit, or use same cable
jacket, as the 5 wire conductor of the 4 zone controller.
5. On a remote room sensor follow wire guide stamped on base
by terminal screws in order to keep polarity and voltages
correct. Otherwise sensor will not work properly.
6. Make sure duct temperature sensor is placed in supply air duct
work, downstream of furnace and evaporator coil, and up-
stream of bypass damper.
Table 7—Wiring Diagram Reference
For Fig. 19 and 20
FAN COIL WITH AIR CONDITIONER
OUTDOOR UNIT
INDOOR UNIT (FIG. 19)
FA4A
FB4A
FC4B
FK4A FK4B
Single-Stage
Air Conditioner
AA B
Two-Speed
Air Conditioner
C† D E
FURNACE WITH AIR CONDITIONER
OUTDOOR UNIT
INDOOR UNIT (FIG. 20)
58VUA/VCA
58PAP
58RAP
58GFA
58DFA
58EFA
58SXA
58DXA
58WAV
58ZAV
58PAV
58RAV
58SXC
58DXC
58EJA
58MXA
58MCA
58MVP
58TUA
58TMA
Single-Speed
Air Conditioner
A* B B B C C
Two-Speed
Air Conditioner
DE* F† G† H HI†
* KGATT0101VSP (Optional) Two-stage relay kit— may help to control over
conditioning.
† Latent capacity control—Required, field supplied. See 2-speed Installation
Instructions.
Table 8—Wiring Diagram Reference
For Fig. 21 and 22
FAN COIL WITH HEAT PUMP
OUTDOOR UNIT
INDOOR UNIT (FIG. 21)
FA4A
FB4A
FC4B
FK4A FK4B
Single-Stage
Heat Pump
AA B
Two-Speed
Heat Pump
C† D E
FURNACE WITH HEAT PUMP
OUTDOOR UNIT
INDOOR UNIT (FIG. 22)
58VUA/VCA
58PAP
58RAP
58GFA
58DFA
58EFA
58SXA
58DXA
58WAV
58ZAV
58PAV
58RAV
58SXC
58DXC
58EJA
58MXA
58MCA
58MVP
58TUA
58TMA
Single-Speed
Heat Pump
A** B* ** C C D D
Two-Speed
Heat Pump
E** F* ** G† H† I I
* KGATT0101VSP (Optional) Two-stage relay kit—may help to control over
conditioning.
† Latent capacity control—Required, field supplied. See 2-speed Installation
Instructions.
** Field-supplied isolation relay.
13