BCI-R / BCI2-R MWU & DWU Checkout for Commissioning Agent
Summary:
Morning Warmup and Daytime Warmup are two critical procedures carried out by the commissioning agent to ensure that the mechanical systems of a facility are functioning optimally throughout the day.
Note: Make sure everything has been configured according to Step 1 in LCU VAV BCI-R Controls Staged Heat Issues (Max Heat Morning Warmup, Daytime Warmup) and table 1 in LCU BCI-R Point Configuration for Control with (non-Trane) Automation System.
| Mode |
Step 1 |
Step 2 |
Step 3 |
Step 4 |
| MWU |
Set values as follow (all must be in service)
MO/7 = 2-unoccupied
MO/8 = 1-Auto
AO/11 Out of Service = INACTIVE (put it in service)
AO/11 = 60 deg. F (must be less than AO/4 - 1.5 deg. F)
wait for:
MI/19 = 13-Max Heat
MI/20 = 2-Unoccupied
|
Set present values as follow
MO/7 = 1-occupied
Upon Unocc. to occ. transition, the unit will be allowed to heat (assuming AI/15 is less than AO/4 minus 1.5 deg. F)
IF MI/19 = 13-Max Heat for < 6 minutes
Fan
1% for 6 minutes total (intended to allow VAV boxes to ramp up)
100% after 6 minutes
Heat
2-minute delay (once fan = 100%), then Heat will fire
MI/19 = 13-Max Heat for > 6 minutes
Fan
The fan will ramp to 100% right away
Heat
2-minute delay (once fan = 100%), then Heat will fire
|
MWU will terminate
automatically
after 1 hour
or
once AO/11 > AO/4
Remember AO/11 requires a heartbeat/value written at least every 15 minutes
|
Release overrides to
MO/7
MO/8
AO/11
Revert AO/11 Out of Service to the correct setting for your application
- Local sensor; AO/11 Out of Service
- Communicated value; In Service
|
| DWU |
Set present values as follow:
MO/7 = 1-occupied
MO/8 = 1-Auto
AO/2 = 72.5 Deg. F
AO/11 Out of Service = INACTIVE (put it in service)
wait for
MI/19 = 1-Auto (may instantly show *13-Max heat if space temp is below DWU Initiate)
MI/20 = 1-Unoccupied
|
AO/11 = 60 deg. F
AO/2 = 75 deg. F
*AO/11 must be < AO/43 must be less than < AO/5 must be less than < AO/2 minus AO/29
IF MI/19 = 13-Max Heat for < 6 minutes
Fan
1% for 6 minutes total (intended to allow VAV boxes to ramp up)
100% after 6 minutes
Heat
2 minute delay (once fan = 100%), then Heat will fire
MI/19 = 13-Max Heat for > 6 minutes
Fan
Fan will ramp to 100% right away
Heat
2 minute delay (once fan = 100%), then Heat will fire
|
DWU will terminate automatically
- once AO/11 > AO/5
Remember AO/11 requires a heartbeat/value written at least every 15 minutes
|
Release overrides to
MO/7
MO/8
AO/2
AO/11
Revert AO/11 Out of Service to correct setting for your application
- Local sensor; AO/11 Out of Service
- Communicated value; In Service
For this to work in normal operation remember
*AO/43 must be less than < AO/5 must be less than < AO/2 minus AO/29
|
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.