Honeywell R7426B Product Data

R7426A,B,C TEMPERATURE CONTROLLER
63-2564—1 14
APPENDIX A
Control and Configuration Parameters
The controller includes two groups of settings (I and II) for
control and configuration parameters. These settings are
automatically selected during programming. See Tables 13
and 14.
NOTES: Parameter Ctrltyp determines the setting:
— Ctrltyp Lo selects setting I.
— Ctrltyp Hi1 and Hi2 select setting II.
Table 13. Control Parameters.
a
Unless otherwise noted.
b
If tr is greater than 120 sec, resolution is 30 sec; if tr is less than 120 sec, resolution is 10 sec.
c
Reset times are for P+I control.
R742
6 Parameter
Description
Setting I / Setting II
Resolution Unit
a
A B C # Name Low High Default
x x x P.01 W1 I01 main setpoint 32 130 / 260 70 / 160 1 °F
xxxP.02 W
lim
I02 limit setpoint (low or high. See C.13) 40 130 / 260 60 / 200
xxxP.03 W
comp
I03 compensation changeover point 20 110 70 1 °F
x x x P.04 Wi Winter reset -350 +350 0 2 %
x x x P.05 Su Summer reset -100 +100 0 1
xxxP.06 W
cas
Submaster or cascade setpoint Off, 50 130/260 70/Off 1 °F
xxxP.07 R
cas
Cascade reset span adjustment 0 70 20
x x x P.08 Xp1 I01 Throttling range (main control loop) 1 70 4/20
x x x P.09 Xp2 I02 Throttling range (cascade or limit control
loop)
170 20
x x P.10 Xpc Cooling throttling range (sequence control) Off, 1 70 6
x x P.11 Xph Heating throttling range (sequence control) 1 70 12
xxxP.12
tr1
b
Reset time (main control loop)
c
Off,
20 sec
20 minutes Off 10 sec /
0.5 min
sec /
min
xxxP.13
tr2
b
Reset time (cascade or limit control loop)
c
x x P.14 MINPOS Minimum position (damper actuators) 0 50 20 1 %
xxxP.15 O
start
Mid-range shift start point (O1) -40 +40 0 1 °F
x x x P.16 SOFFS Main setpoint offset (unoccupied mode) 0 20 4 / 10 0.1
x x x P.17 I01Cal Calibration of sensor I01 -40 +40 0
x x x P.18 I02Cal Calibration of sensor I02
x x x P.19 I03Cal Calibration of temperature sensor I03
x x P.20 RetOffs Return air offset to simulate return air
conditioning
Off, 0 10 Off
x x P.21 RuntimeO1 Actuator run time (O1) 6 180 60 1 sec
x P.22 RuntimeO3 Actuator run time (O3)
x P.23 RuntimeO2 Actuator run time (O2)
x x x P.24 NightLow Night temperature low limit Off, 50 70 Off 1 °F
x x x P.25 NightHigh Night temperature high limit Off, 70 100
x x x P.26 NOFFS Main setpoint offset (night mode) 0 60 10 / 40 0.1

Honeywell R7426B Specifications

General

Brand	Honeywell
Model	R7426B
Category	Controller
Language	English