Low Ambient Condenser Fans; Electric, Steam And Hot Water Start; (Variable Air Volume Systems) - Trane IntelliPak 1 with Symbio 800 Installation, Operation And Maintenance Manual

Table 57. Minimum outside air temperature
Standard Unit Minimum Outside
Air Temperature for Mechanical
Cooling
Economizer - A/C Applications
No Economizer - 80/67F design return
air
No Economizer - 90/78F design return
air

Low Ambient Condenser Fans

When a unit is ordered with the low ambient option (i.e.,
Digit 19 is a "1" in the model number), it can affect the
selection of condenser fan motors. Please see the table
below and "Compressor Blink Codes," p. 112
fan motors will be variable speed.
Ton-
Efficiency Tier
nage
20 eFlex
Std.
25
High & eFlex
Std. & High
30
eFlex
Std.
40
High & eFlex
Std.
50
High & eFlex
Std.
55
High & eFlex
Std. & High
60
eFlex
Std. & High
70
eFlex
Std. & High
75
eFlex
Any
90
Any
105
Any
115
Any
130
RT-SVX072D-EN
eFlex™ units
Std & 20, 60,
High Cap 70, 75
units ton
45°F 45°F
45°F 45°F
50°F 50°F
to see which
Low Ambient Variable Speed
Condenser Fans
Circuit 1 Circuit 2
All -
2M6 -
All -
2M6 -
All -
2M6 2M9
All All
2M6 2M9
All All
2M6 2M9
All All
2M6 2M9
All All
2M6 2M9
All All
2M6 2M9
All All
2M6 2M9
2M6 2M9
2M6 2M9
2M6 2M9
Electric, Steam and Hot Water
Start-Up
25, 30,

(Variable Air Volume Systems)

40, 50,
55 ton
1. Ensure that the "System" selection switch at the remote
panel is in the Off position.
50°F
2. Close the disconnect switch or circuit protector switch
that provides the supply power to the unit terminal block
55°F
(1TB1) or the unit-mounted disconnect switch (1S14).
70°F
Hazardous Voltage!
Failure to disconnect power before servicing could
result in death or serious injury.
Disconnect all electric power, including remote
disconnects before servicing. Follow proper lockout/
tagout procedures to ensure the power can not be
inadvertently energized. Verify that no power is
present with a voltmeter.
Important: Do not open the service access doors while
3. Turn the 115 volt control circuit switch (1S1) and the 24
volt control circuit switch (1S70) to the On position.
4. Open the User Interface access door, located in the
unit control panel, and press the Manual Overrides key
to display the first service screen. Refer to the latest
edition of the appropriate programming manual for VAV
applications for the Manual Overrides screens and
programming instructions.
5. Use tables in
components for operation by scrolling through the User
Interface displays:
Electric Heat
Heat Stages - 1, 2, or 3 (as required)
Steam or Hot Water Heat
Hydronic Heat Actuator (100% Open)
Open the main steam or hot water valve supplying the
rooftop heater coils.
6. Once the configuration for the appropriate heating
system is complete, press the Auto key.
Unit Start-up
WARNING
the unit is operating. HIGH VOLTAGE IS
PRESENT AT TERMINAL BLOCK OR
UNIT DISCONNECT SWITCH (1S14).
"," to program the following system
117