Air Balancing - Daikin Rebel Applied DPSA Installation And Start-Up Manual

Air Balancing

Moving Machinery hazard. Moving components such as, fans, dampers,
energy recovery devices can cause serious injury or death. Do not use a
mechanically driven tachometer to measure the speed of return fans on this
fan arrangement. Use a strobe tachometer.
Rotating parts can cause serious injury or death. Replace all fan guards
that are temporarily removed for service.
Air balancing should be performed by a qualified air balancing
technician.
The following should be performed as part of the air balancing
procedure:
1. Check the operating balance with the economizer
dampers positioned for both full outdoor air and minimum
outdoor air.
2. Verify that the total airflow will never be less than that
required for operation of the electric heaters or gas
furnace.
3. For VAV units that have fan tracking control, adjust the
supply/return fan balance by using the MicroTech 4
controller's built-in, automatic capability.
When all start-up procedures are completed, set the controls
and program the MicroTech 4 controller for normal operation.
Use the following list as a guide; some items may not apply to
your unit.
1. Set the heating and cooling parameters as required for
normal unit operation.
Main Menu\Commission Unit\HtgClgChgovr Set-Up\
a.
Ctrl Temp Scr = RAT
on application needs. Refer to
recommendations
Main Menu\Commission Unit\CoolingSet-Up\Occ
b.
Clg Spt DAT Clg Spt
&
Main Menu\Commissiong Unit\Heating Set-Up\Occ
c.
Htg Spt DAT Htg Spt.
&
2. Set the low ambient compressor lockout setpoint as
Main Menu\Commission Unit\Cooling
required in menu,
Setup\Clg Lo Oat Lk =
unless the unit is equipped for low ambient operation.
3. Set the high ambient heat lockout temperature setpoint,
Main Menu\Commission Unit\Heating Setup\Htg Hi OAT Lk
as required.
4. Set the alarm limits as required in
Commission Unit\Alarm Configurations\Alarm Limits
IM 1287 • REBEL APPLIED ROOFTOP
DANGER
WARNING
Space OAT None
, , , based
OM-1288 for
.
. Do not set it below 50°F (10°C)
Main Menu\
5. Set the compressor lead/lag function as desired using
keypad menu
Setup\Lead Circuit
Cooling Setup\Load Method = Lead Load
If the unit has hot gas bypass on circuit #1 only, lead circuit must always be
circuit #1 and Load method set to Lead Load.
6. Set the duct static pressure control parameters as
required in keypad menu
DSP Spt =___ in.
in.
based on application and unit configuraiton.
7. Set the RF/EF Control Parameters based on the
applicaiton
a. If RF/EF Control = Tracking, then set the fan
tracking parameters as required in keypad menu.
Main Menu\ Commission Unit\RF/EF Setup\ Sup Fan
Max, RF @ SF Max, Sup Fan Min, RF @ SF Min.
Main Menu\ Commission Unit\RF/EF Setup\ RF/EF
b. If
Ctrl = BSP
parameters as required in keypad menu location
Main Menu\Quick Menu\BldgSP Spt=___ in.
application and unit configuraiton.
Main Menu\ Commission Unit\RF/EF Setup RF/EF
c. If
Ctrl = DSP
parameters as required in keypad menu
Menu\ Commission Unit\RF/EF Setup \RAF DSP
Spt=.
NOTE: This configuration is only available with a modulating
Exhust air Damper.
Main Menu\ Commission Unit\RF/EF Setup\ RF/EF
d.
Ctrl = OAD
required in keypad menu.
Unit\RF/EF Setup\ ExhOn OA Pos=%, ExhMax
OAPos =%
e. For details on commissing RFEF Ctrl = CAV, Flow,
Sped/Net, or Flow Diff, refer to
8. Set the Outside air damper and economizer control
parameters as required in keypad menu
Commission Unit\OA Damper Set-Up
a. Set the Vent Limit = % open required at 100% SAF
full ventialtion
b. Set the loFlo Vent Limit OAD % at minimum SAF
speed, full ventilation
c. If the unit is performnace DCV (Demand Control
Ventilation), Set the DCV limit for the minimum
OAD position during DCV at 100% SAF Flow. Set
CO Reset = PPM@DCVLmt = lower threshold
.
2
of CO
threshold of CO
46
Unit Operation
Main Menu\Advanced Menus\Cooling
Main Menu\Advanced Menus\
and
CAUTION
Main Menu\Quick Menu\ SAF
RAF DSP Spt=___ in.
; ;
, Set the building static pressure control
, Set the building static pressure control
Based application and unit configuraiton
, then set the fan tracking parameters as
Main Menu\ Commission
OM-1288
ppm allowed and PPM@VentLmt = Upper
2
ppm allowed.
2
www.DaikinApplied.com
Cross Load
or
BldgSP Spt=___
based
Main
Main Menu\