Fan Speed Control; Hvac Mode Selection - Honeywell TR80 Installation And Operating Manual

3. 12. 2 Fan Speed Control

Register
type
Holding
Holding
Holding
Holding
Holding
Holding
Input
Input register 'User fan speed' changes every time the user makes a fan-speed adjustment
on the wall module.
Holding register 'Fan Speed Active in Master Controller' is used for local display when the
user fan speed is selected as AUTO.
'Fan UI attributes' register description:
• Bit 0: Fan override (0: override not allowed; fan button disabled / 1: Override allowed)
• Bit 1: Display type for single-stage fan (0: 1 bar, 1: 3 bars)

3. 12. 3 HVAC mode selection

TR80 allows two different Hvac mode selection options: simple or advanced. In simple
mode, the occupancy button simply and directly switches between available modes (heat-
ing/cooling/fan/only...) similarly to a basic A/C unit.
TR80 - Installation and Operation Guide
Relative Absolute
Dir
Address Address
2204 42205 R/W
2205 42206 R/W
2206 42207 R/W
2207 42208 R/W
2208 42209 R/W
1202 41203 R/W
201 30202 R
Config
Name
parameter
Fan type 204
EC Fan
speed
205
adjust step
size
Fan speed
206
low-limit
Fan speed
207
high-limit
Fan UI
208
attributes
Fan speed
active in
-
master
controller
User fan
-
speed
Type Range
0: no fan
1: Single speed fan
enum 2: Two-speed fan
3: 3-speed fan
4: EC fan
0: 1%
1: 2%
enum 2: 5%
3: 10%
4: 20%
0-100 % for EC
Int fans,
0-3 for others
0-100 % for EC
Int fans,
0-3 for others
Bit 0: Fan override
allow
bitwise
Bit 1: Display of 1-
stage fan
EC Fans: 0..100%
Others: 0..3
int
Unknown/invalid:
32767
EC Fans: 0..100%
Others: 0..3 (Off-
int
Lo-Med-Hi)
Auto= 0x7FFF
Default
value
3
3
0
100
1
32767
32767
44