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ZONEBB3Z(AC/HP)01: Quick Reference Guide

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

4

Fig. 6 – Leaving Air Temperature (LAT) Sensor

Please  refer  to 

Limit Temperature  Levels  and Actions Table

  in  the

Installation and Start-Up Instructions for additional information on the

response of the system to LAT/HPT sensors. 

Step 6 – Connect the Power Supply

Optional:

 Use a dedicated 24 VAC, 40 VA, 60 Hz isolated transformer

(not included).
Otherwise,  if  the  cooling  and  heating  systems  have  separate

transformers,  twist  off  the 

Rc/Rh

  jumper  using  a  pair  of  long  nosed

pliers. Then connect the R of the cooling transformer to Rc, the R of the

heating transformer to Rh and the common of both transformers to C.

Connect  a  jumper  wire  between  Rz  and  Rc.  Rc  powers  G,Y,  and  O

outputs. Rh power W outputs.

Fig. 7 – Connecting the Power Supply

Step 7 – Wire the HVAC Equipment

The descriptions  below  and 

Table 1

 will help you choose  the connect

wiring diagram for your system. 

Table 1

 also shows the proper setting of

dipswitches 9 and 10 for each diagram.
There are 8 dipswitch settings on the AC zone control and an additional

4  dipswitch  on  the  HP  zone  controls  board. 

Table 1

  summarizes  their

function and available settings.

Fig. 8 – Dip Switches

NOTE: 

ZONEBB3ZAC01  model  does

not have HPT connector.

Table 1 – Dipswitch Settings

Dipswitch

Position

Operation Description

Default (OFF)

Optional Settings

1

Auto changeover time between heating and 

cooling or vice versa

Auto changeover time 

ENABLED

 (OFF)

Auto changeover time 

DISABLED

2

Together with dipswitch 3, determines 

chanegover time

20

 minutes auto changeover 

time (OFF)

30 minutes auto changeover time (ON)

3

Multiplier for the modified time set on dipswitch 2

1.0 multiplier (OFF)

0.5 multiplier (ON)

4

Installer Test Mode used to check system 

operation

Normal operation (OFF)

Installer Test Mode 

ENABLED

 (ON)

5

Disables zoning operation with all dampers open 

and Zone 1 thermostat as controller

Zoning Operation 

ENABLED

 

(OFF)

Zoning Operation 

DISABLED

 (ON)

6

Setting G (Fan) to energize with W

W NOT energized with G (OFF)

W energized with G (ON)

7

Sets Leaving air Temperature (LAT) limit 

temperature (HP/2 Stage control only)

145°F

(OFF)

(OFF)

160°F

(ON)

175°F

(ON)

8

130°F

(ON)

(OFF)

9

Designated Zoning Controller connection to heat 

pump (HP) or an air conditioner (AC)

1 or 2 Speed HP / 1 Stage Aux. 

Heat (OFF)

1 or 2 Speed 

AC / 1 or 2 

Stage Heat

*

 

(ON)

*. For 2 stage heating, the stat may be a 2 stage heat AC stat or a HP stat converted to AC.

1 Speed  HP / 1 

Stage Aux 

Heat

†. Uses an AC stat with 2 stage heating instead of a HP stat.

(OFF)

10

Designates the type of thermostat used with the 

Zoning Controller (HP or AC)

(ON)

11

Disable over/under temperature protection for the 

equipment in emergency situations

LAT and HPT Safety Protection 

ENABLED 

(OFF)

LAT and HPT Safety Protection 

DISABLED 

(ON)

12

Determine the Reversing Valve is energized for 

cooling (O function) or heating (B function)

Reversing Valve energized on 

COOLING

 (OFF)

Reversing Valve energized on 

HEATING

 (ON)

Summary of Contents for bryant ONEBB3ZAC01

Page 1: ... hr cph providing maximum equipment protection Selection Jumpers Designed for easy configuration Additional Options Timeguard override Compressor protection Modulating damper control in emergency situations Damper fuse protection High and low temperature limits Auto changeover from any zone RH and RC for voltage isolation Bypass setup routine Staging time for energy savings Automatic checkout with...

Page 2: ...stem The Bryant 3 Zone System can be mounted in either vertical or horizontal position near the HVAC system inside the home It is designed so that wires can enter it from behind above or below Plan wire routing before mounting Fig 2 Mounting the System 1 Remove the front cover from the base and use the base as a template to mark drilling locations on the wall stud or roof truss 2 Mount using 4 scr...

Page 3: ... detect a cooling overload condition and is connected to the LAT and LATC terminals Polarity does not matter Locate LAT sensor in main supply trunk after heating and cooling coil and before bypass damper and first branch Cycling on internal equipment limits is to be avoided because it over stresses and can shorten the life of the equipment The LAT limit setting should be selected to trip below the...

Page 4: ...tion Default OFF Optional Settings 1 Auto changeover time between heating and cooling or vice versa Auto changeover time ENABLED OFF Auto changeover time DISABLED 2 Together with dipswitch 3 determines chanegover time 20 minutes auto changeover time OFF 30 minutes auto changeover time ON 3 Multiplier for the modified time set on dipswitch 2 1 0 multiplier OFF 0 5 multiplier ON 4 Installer Test Mod...

Page 5: ...N R C Y Y2 G Rz C REV VALVE R C Y1 G W1 Y2 W2 O SWITCH 9 OFF SWITCH 10 OFF Rh Y1 G W1 Y2 W2 O R C Y G C Y Rc O O W R HP 2S 3 ZONE CONTROL ZONE 1 INPUT ZONE 1 2SACTS TAT EQIUPMENT PO WE R FURNACE OR FAN COIL LO COOL LO HEAT FA N R C G Rz C HI HEAT R C Y1 G W1 Y2 W2 O SWITCH 9 ON SWITCH 10 ON Rh Y1 G W1 Y2 W2 O R C Y1 G C Y1 Rc R Y Y2 HI COOL Y2 W2 Y2 2 SPEED AIR CONDITIONER HP 2S3 ZONECONTROL ZONE ...

Page 6: ...d designs without notice and without obligations 6 Training My Learning Center is your central location for professional residential HVAC training resources that help strengthen careers and businesses We believe in providing high quality learning experiences both online and in the classroom Access My Learning Center with your HVACpartners credentials at www mlctraining com Please contact us a myle...

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