Trane IntelliPak WEHE Series Installation, Operation And Maintenance Manual page 75

Example: If the voltage readings of the supply power
measured 221, 230, and 227, the average volts would be:
221 + 230 + 227 = 226 Avg.
3
VD (reading farthest from average) = 221
The percentage of Imbalance equals:
100 X 226 - 221 = 2.2%
226
The 2.2% imbalance in this example exceeds the
maximum allowable imbalance of 2.0%. This much
imbalance between phases can equal as much as a 20%
current imbalance with a resulting increase in motor
winding temperatures that will decrease motor life. If the
voltage imbalance is over 2%, notify the proper agencies
to correct the voltage problem before operating this
equipment.
Table 20. Service test guide for component operation
COMPONENT
BEING TESTED
SUPPLY FAN*
EXHAUST FAN
GAS HEAT (Full Cap.)
Stage 1
Stage 2
Full Modulating
(For High Fire Adjustment)
Full Modulating
(For Low Fire Adjustment)
Limited Modulating
(For High Fire Adjustment)
Limited Modulating
(For Low Fire Adjustment)
ELECT HEAT (Full Cap.)
Stage 1
Stage 2
Stage 3
Modulating
Hydronic Heat
Pre - Heater
Fresh Air Dampers
Exhaust Dampers
(a) RTM OCC/UNOCC output in the Service Test Mode must be in the unoccupied mode to open the system VAV boxes or
to drive the VFD to 100%.
RT-SVX35H-EN
COMPONENT CONFIGURATION
Supply Exhaust
Fan Fan 1
On Off Off
Off On Off
On Off On
On Off On
On Off Off
On Off
On Off
On Off
On Off
On Off On
On Off On
On Off Off
On Off Off
100%
Off Off
Select
Off Off On
Off Off Off
Off Off Off
Heat Stages
Econo
2 3 Damper
Off Off Closed
Off Off Closed
On N/A Closed
Off N/A Closed
On N/A Closed
90%
Closed
Select
5% Select Closed
90%
Closed
Select
33%
Closed
Select
On On Closed
Off Off Closed
On Off Closed
Off On Closed
Closed
N/A N/A Closed
100%
Off Off
Open
Off Off 100%
System Start-up
Occ
Exhaust VFD Unocc
(a)
Damper Output Relay
Closed 100% Unocc
100%
100% Default
Open
Closed 100% Unocc
Closed 100% Unocc
Closed 100% Unocc
Closed 100% Unocc
Closed 100% Unocc
Closed 100% Unocc
Closed 100% Unocc
Closed 100% Unocc
Closed 100% Unocc
Closed 100% Unocc
Closed 100% Unocc
Closed 0% Default
Closed 0% Default
Closed 0% Default
100%
0% Default
Open
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