Trane Technologies Voyager 3 - Page 41

RT-SVX34V-EN
41
Table 14. Service test state request (continued)
Device Request
/ Service Test
Step
Supply
fan On/
Off
request
Supply fan
speed
request
(VVZT,
CVZT)
Supply fan
speed
request
(VVDA)
(a)
VAV box
relay
request
(VVDA)
Outdoor
air
damper
position
request
Com-
pressor
cool
stage
request
Aux heat
stage
request
Relief
fan On/
Off
request
Relief
damper
position
request
Reheat
pumpout
solenoid
On/Off
request
(b)
Reheat
valve 1
request
(c)
Heat
cool
mode
status
(VVZT,
CVZT)
Heat cool
mode
status
(VVDA)
(d)
Open Reheat
Valve
OFF 0 0
Open
0 0 0 OFF 0 OFF
85
(f)
Test
Maximum
Heat
Close Reheat
Valve
OFF 0 0
Open
0 0 0 OFF 0 OFF 0 Test
Maximum
Heat
(a)
For VVDA units, Supply Fan Speed Request shall not be 100 before VAV boxes full open. If VAV box stroke timer has not been expired, set fan speed to Min to avoid high duct static pressure trip.
(b)
Reheat Pumpout Solenoid On/Off Request shall be ON whenever compressor cool or heat stage request is greater than 0, except during the "Reheat" step.
(c)
The value of Reheat Valve 2 Request will always be inverse of Reheat Valve 1 Request.
(d)
For VVDA units, Heat Cool Mode Status shall be set to Maximum Heat to coordinate VAV Box Relay, when any service test step activated
(e)
Supply Fan Speed Request "Effective Mid" equals to ( Effective Maximum Fan Speed + Effective Minimum Fan Speed ) / 2.
(f)
Reheat Valve 1 Request is set to 85% in "Open Reheate Valve 1" step, because 85% is the max operating range during normal operation.
Startup