Honeywell T775A2009 User Manual

T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS
54 63-7147—05
Table 7. Cross Reference. (Continued)
1
can be configured with up to two T775S expansion modules for a maximum of 12 stages
2
if staging 4 relays and a pump output add one T775S2008 expansion module
3
if staging 9 relays and a pump output add two T775S2008 expansion modules
Features
Tekmar Model & T775 Cross
150
O n e S t a g e
Setpoint Control
T775A2009
152
Tw o S t a g e
Setpoint Control
T 7 7 5 B 2 0 3 2
256
O n e S t a g e
Boiler Control
T7775P2003 T775R2035
260
One Stage Boiler
& DHW Control
T7775P2003 T775R2035
262
Two Stage Boiler &
DHW Control
T7775P2003
264
O u r S t a g e
Boiler & DHW
Control
T775P2003
2 6 8
N i n e S t a g e
Boiler & DHW
Control
T775P2003 & (2)
T775S2008
Adjustable Minimum Off Time
     
Auto Differential
 
Boiler Demand

use DI use DI

use DI use DI

use DI

use DI
Built-in Display
    
Combustion Air or Alarm Contact
Digital Output for
Alarm
Digital OutPut for
Alarm
Digital Output for
Alarm
Both
Digital Output for
Alarm
Both
Digital Output for
Alarm
DHW Control

Digital Input for Setback or Disable

Boiler Demand

Boiler Demand

Boiler Demand

Boiler Demand

Boiler Demand

Equal Run Time
   
External Input 0-10Vdc or 2-10Vdc

First On / First Off Rotation
 
First On/ Last OFF Rotation
 
Fixed Last Rotation

Fixed Lead Rotation

Floating Output

Integral Voltage Options Type based

Type based

Type based

Type based

Type based

Irreversible High Set Point Limit
     
Lo/ Hi or Hi/ Lo staging

Modulating Outputs (T775M2048) T775R2027 T775R2027
Nema 4x Models (T775B2016)
Optional Input Sensor

Outdoor Reset
    
Power Supply Voltage 20 to 28 Vac 24, 120, 240 Vac 20 to 28 Vac 24, 120, 240 Vac 24Vac 24, 120, 240 Vac 24, 120, 240 Vac 120 Vac 24, 120, 240 Vac 24, 120, 240 Vac 120 Vac 24, 120, 240 Vac 115 Vac 24, 120, 240 Vac 115 Vac 24, 120, 240 Vac
Pump Exercising 
  
Pump Purging 
  
PWM Mode

Relay Rating 24 Vac 24, 120, 240 Vac 24 Vac 24, 120, 240 Vac 24, 120, 240 Vac 24, 120, 240 Vac 24, 120, 240 Vac 24, 120, 240 Vac 24, 120, 240 Vac 24, 120, 240 Vac 24, 120, 240 Vac 24, 120, 240 Vac 24, 120, 230 Vac 24, 120, 240 Vac 24, 120, 230 Vac 24, 120, 240 Vac
Relay Outputs 1 SPDT 1 SPDT 2 SPST 2 SPDT 1 SPST 4 SPDT 2 SPDT 1 SPST 4 SPDT 2 SPDT 2 SPST 4 SPDT 4 SPST
4 SPDT
2
9
12 SPDT
3
Sensor Calibration



Sensor Inputs 1122232332533333
Sensor Type
10k
Ω at 77°F 1097Ω at 77°F 10kΩ at 77°F 1097Ω at 77°F 10kΩ at 77°F 1097Ω at 77°F 1097Ω at 77°F 10kΩ at 77°F 1097Ω at 77°F 1097Ω at 77°F 10kΩ at 77°F 1097Ω at 77°F 10kΩ at 77°F 1097Ω at 77°F 10kΩ at 77°F 1097Ω at 77°F
Time Clock with Setback

need external timer
(tekmar Timer 031)

need external timer
(tekmar Timer 031)

need external timer
(tekmar Timer 031)

need external timer
(tekmar Timer 031)

need external timer
(tekmar Timer 031)

Adjustable Interstage Delay
     
Warm Weather Shut Down
  

Honeywell T775A2009 Specifications

General

Brand	Honeywell
Model	T775A2009
Category	Controller
Language	English