Trane LO Guide

Installation
Operation
Maintenance
UniTrane®Fan-Coil Room Conditioners
Force Flo™ Cabinet Heaters
Sizes 02-12
Low Vertical Fan-Coils
Sizes 03-06
UNT-IOM-6
Supercedes UNT-IOM-5
April 2000
Models
“LO” Design Sequence and Later

2UNT-IOM-6
Table of Contents
General Information3
Cabinet Styles4
Model Number Description6
Receivin and Handlin 9
Jobsite Stora e10
Installation Considerations11
Service Access12
Installation Checklist13
Vertical Units15
Installin the Unit15
Horizontal Units16
External Insulatin Require-
ments20
Startup Checklist20
Units with Hydronic Coil Connec-
tions Only21
Pipin 21
Units with Steam Coils22
Factory Pipin Packa e Connec-
tions24
Installin the Auxiliary Drain
Pan25
Condensate Overflow Detection
Device26
Automatic Chan eover Sensor26
Automatic Electric Heat Lockout
Switch (Fan-coil) 27
Ductwork Recommendations32
Duct Connections32
Supply Power Wirin 33
Electrical Connections33
Wall Mounted Control Interconnec-
tion Wirin 35
Electrical Groundin Restric-
tions35
Fan Mode Switch 36
Installation36
Installin Wall Mounted Con-
trols36
Zone Sensor Installation37
Fan Mode Switch39
Tracer® ZN.010 and ZN.51040
Thermostat Module Operatin
Information41
Binary Inputs42
Binary Outputs43
Analo Inputs44
Fan Mode Switch44
Zone Sensors44
Supply Fan Operation45
LED Activity46
Troubleshootin 46
Yellow COMM LED47
Manual Output Test48
Dia nostics50
Resettin Dia nostics51
Troubleshootin 53
Tracer® ZN.52059
Troubleshootin 83
Troubleshootin 85
Tracer® Communication Wirin
88
Service Communication Wirin
89
Wall-Mounted Zone Sensor
Module89
TUC Human Interface90
Coolin and Heatin Operation92
TUC Sequence of Operation92
Fan Mode Operation93
Enterin Water Temperature
Samplin Function94
2-Pipe with Auxiliary Electric Heat
(Fan-coils)94
Fresh Air Damper Options95
BIP4: Low Temperature Detection
Option97
BIP3: Condensate Overflow
Detection Device97
BIP4: Smoke Input98
BIP1: External Interlock98
BIP3: Occupied/Unoccupied
Mode98
BIP2: Motion Detection99
Autocycle Test99
Readin Dia nostics 101
Readin the Operatin Machine
State 102
Readin the Operatin Control
Mode104
Resettin Dia nostics107
Dia nostics107
Unit Mode Listed as Standby108
Troubleshootin 109
Maintenance Procedures116
Periodic Maintenance Check-
list116
Maintenance116
Inspectin and Cleanin Drain
Pans118
Winterizin the Coil 120
Inspectin and Cleanin Coils121
Inspectin and Cleanin the
Internal Insulation on Fan-
Coils123
Inspectin and Cleanin the
Fan124
Fan Board Assembly Removal126
Factory Pipin Packa es128
Appendix128
Typical Wirin Dia rams129-134

UNT-IOM-6 3
UniTrane® fan-coil and Force Flo cabinet heaters units are single
room units with load capabilities of 200 to 1200 cfm. See Figure 1
for unit components. Fan-coil units are available as 2-pipe with or
without electric heat one hydronic circuit) or 4-pipe two hydronic
circuits). Force Flo units feature 2-pipe hydronic coils, electric heat
only, or steam only. Also, units feature a variety of factory piping
packages. See the Appendix on page 100 for more information on
available factory-installed piping packages.
Three control options are available with the UniTrane® fan-coil and
Force Flo cabinet heater units.
1. fan mode switch
2. Tracer® ZN.010 and ZN.510, ZN.520
3. terminal unit controller TUC)
All control options are available as unit or wall mounted. Units with a
Tracer® ZN.010, ZN.510, ZN.520 or TUC also feature a split combina-
tion: unit mounted fan mode switch with a wall mounted setpoint dial.
The Tracer® controllers ZN.010, ZN.510 and ZN.520) utilize binary
outputs to operate 2-position control valves, supply fan/s, 2-position
dampers, and electric heat.
The TUC utilizes binary outputs to control the fan and optional
auxiliary heat. In addition, it operates 2-position or 3 wire floating
point control valves and the fresh air damper.
Available supply and return openings vary with each cabinet style. In
addition, a fresh air opening with either a manual or motorized air
damper is an available option. See pages 4-5 for available cabinet
styles.
General Information
Hydronic coil
Fan motor(s)
Throwaway filter
Supply fan(s)
Piping package
Control panel
Figure 1. Main components of a fan-coil or cabinet heater unit.
*Auxiliary
drain pan
*Main drain pan
*Featured on fan-coils only

4UNT-IOM-6
Model F
Wall Hung Cabinet**
Model B
Vertical Cabinet
Model A
Vertical Concealed
Cabinet Styles
Model C
Horizontal Concealed Model D
Horizontal Cabinet
Model E
Horizontal Recessed

UNT-IOM-6 5
Model K
Low Vertical Concealed*
Model L
Low Vertical Cabinet*
Model M
Inverted Vertical Cabinet**
Model N
Inverted Vertical Recessed**
*Fan-coil only
**Force Flo cabinet heater only
Model J
Vertical Slope Top Cabinet
Model H
Vertical Recessed

6UNT-IOM-6
Figure 2. The unit nameplate is
on the fan scroll.
Model Number
Description
Each UniTrane® fan-coil and Force Flo  cabinet heater has a
multiple character model number unique to that particular unit. To
determine a units specific
options, reference the model
number on the unit nameplate
on the fan scroll. The unit
nameplate also identifies the
serial number, sales order
number, and installation and
operating specifications. See
Figure 2 for the nameplate
location.
Reference pages 7-8 for a
detailed explanation of the
model number.
Complete the installation checklist on page 13 to ensure proper and
safe operation.

UNT-IOM-6 7
Model Number Description
J With piping, RH
K With piping, LH
L With piping, RH, ext. end pocket
M With piping, RH, ext. end pocket
Digits 10 & 11 Design Sequence
LO
Digit 12 Inlet
A Front toe space
B Front bar grille
Front stamped louver
D Bottom stamped louver
E Bottom toe space
F Back duct collar
G Open return
H Back stamped louver
Digit 13 Fresh Air Damper
0 None
A Manual, bottom opening
B Manual, back opening
Manual, top opening
D Auto, 2 pos., bottom opening
E Auto, 2 pos., back opening
F Auto, 2 pos. top opening
G Auto, economizer,
bottom opening
H Auto, economizer, back opening
J Auto, economizer, top opening
K No damper, bottom opening
L No damper, back opening
M No damper, top opening
Digit 14 Outlet
A Front duct collar
B Front bar grille
Front stamped louver
D Front quad grille
E Bottom duct collar
F Bottom stamped louver
G Top quad grille
H Top bar grille
J Top duct collar
K Bottom bar grille
Digit 15 Color
0 None
1 Deluxe beige
2 Soft dove
3 ameo white
4 Driftwood grey
5 Stone grey
6 Rose mauve
Digit 1 Tamperproof Locks
& Leveling Feet
0 None
A Keylock panel
B Keylock access door
Keylock panel & access door
D Leveling feet
E Keylock panel with leveling feet
F Keylock access door
w/leveling feet
G Keylock panel & access door
w/leveling feet
Digit 17 Motor
A Free discharge
B High static
Digit 18 Coil
A 2 row cooling/heating
B 3 row cooling/heating
4 row cooling/heating
D 2 row cooling, 1 row heating
E 2 row cooling, 2 row heating
F 3 row cooling, 1 row heating
G 2 row cooling or heating only
H 3 row cooling or heating only
J 4 row cooling or heating only
K 2 row cooling/heating, elec. heat
L 3 row cooling/heating, elec. heat
M 4 row cooling/heating, elec. heat
N Electric heat only, 1 stage
P 2 row cooling/heating,
1 row heating
Q 2 row cooling/heating,
2 row heating
R 3 row cooling/heating,
1 row heating
U Electric heat only, 2 stage
V Electric heat only, low kw, 1 stage
W Steam coil
Digit 19 Coil Fin Series
2 144
Digit 20 Air Vent
A Automatic
M Manual
Digits 21, 22, & 23 Electric Heat kW
[208 V kW derate in brackets]
000 None
010 1.0 [0.75]
015 1.5 [1.1]
020 2.0 [1.5]
025 2.5 [1.9]
030 3.0 [2.2]
040 4.0 [3.0]
045 4.5 [3.3]
050 5.0 [3.7]
060 6.0 [4.4]
070 7.0 [5.3]
075 7.5 [5.7]
080 8.0 [6.0]
100 10.0
105 10.5 [7.9]
110 11.0 [9.0]
120 12.0
135 13.5 [10.2]
150 15.0
180 18.0 [13.5]
200 20.0 [15.0]
*Force Flo cabinet heater only
Digits 1 & 2 Unit Type
F
FF
Digit 3 Model
A Vertical concealed
B Vertical cabinet
Horizontal concealed
D Horizontal cabinet
E Horizontal recessed
F Vertical wall hung*
H Vertical recessed
J Vertical slope top
K Low vertical concealed
L Low vertical cabinet
M Inverted vertical cabinet*
N Inverted vertical recessed*
Digit 4 Development Sequence
B
Digits 57 Unit Size
020 200 cfm
030 300 cfm
040 400 cfm
060 600 cfm
080 800 cfm
100 1000 cfm
120 1200 cfm
Digit 8 Unit Voltage
1 115/60/1
2 208/60/1
3 277/60/1
4 230/60/1
5 208/60/3
6 230/6j0/3
7 480/60/3
8 110-120/50/1
9 220-240/50/1
A 220-240/50/3
B 380-415/50/3
Digit 9 Piping System Placement
A W/o piping, RH conn.,
w/o aux. drain pan
B W/o piping, LH conn.,
w/o aux. drain pan
W/o piping, RH conn.,
w/ aux. drain pan
D W/o piping, LH conn.,
w/ aux. drain pan
E W/o piping, RH conn.,
w/o aux. drain pan,
ext. end pocket
F W/o piping, LH conn.,
w/o aux. drain
G W/o piping, RH conn.,
w/ aux. drain pan,
ext. end pocket
H W/o piping, LH conn.,
w/ aux. drain pan, ext. end
pocket

8UNT-IOM-6
R 7 falseback
T 8 falseback
Digit 40 Main Auto Circuit Setter GPM
0 None
A 0.5
B 0.75
1.0
D 1.5
E 2.0
F 2.5
G 3.0
H 3.5
J 4.0
Digit 41 Auxiliary Auto Circuit Setter GPM
0 None
A 0.5
B 0.75
1.0
D 1.5
E 2.0
F 2.5
G 3.0
H 3.5
J 4.0
Digit 42 Subbase
0 None
A 2 height
B 3 height
4 height
D 5 height
E 6 height
F 7 height
Digit 43 Recessed Flange
0 None
A Recessed flange
Digit 44 Wallbox
0 None
A Anodized
Digit 24 Reheat
0 None
A Steam
B Hot water
Digit 25 Disconnect Switch
0 None
D With disconnect
Digit 2 Filter
0 None
11 TA
2 1 TA pltd. media
3 1 TA + 1 extra
4 1 TA pltd. media + 1 extra
5 1 TA + 2 extra
6 1 TA pltd. media + 2 extra
7 1 TA + 3 extra
8 1 TA pltd. media + 3 extra
Digit 27 Main Control Valve
0 None
A 2 way, 2 pos., N.O. (25 psig)
B 3 way, 2 pos., N.O. (30 psig)
2 way, 2 pos., N. . (25 psig)
D 3 way, 2 pos., N. . (15 psig)
E 2 way, 2 pos., N.O. (50 psig)
F 3 way, 2 pos., N.O. (50 psig)
G 2 way, 2 pos., N. . (50 psig)
H 3 way, 2 pos., N. . (50 psig)
J 2 way, mod., v = 0.7 (50 psig)
K 3 way, mod., v = 0.7 (50 psig)
L 2 way, mod., v = 1.5 (50 psig)
M 3 way, mod., v = 1.5 (50 psig)
N 2 way, mod., v = 2.5 (50 psig)
P 3 way, mod., v = 2.5 (50 psig)
Q 2 way, mod., v = 4.0 (50 psig)
R 3 way, mod., v = 4.0 (50 psig)
Digit 28 Auxiliary Control Valve
0 None
A 2 way, 2 pos., N.O. (25 psig)
B 3 way, 2 pos., N.O. (30 psig)
2 way, 2 pos., N. . (25 psig)
D 3 way, 2 pos., N. . (15 psig)
E 2 way, 2 pos., N.O. (50 psig)
F 3 way, 2 pos., N.O. (50 psig)
G 2 way, 2 pos., N. . (50 psig)
H 3 way, 2 pos., N. . (50 psig)
J 2 way, mod., v = 0.7 (50 psig)
K 3 way, mod., v = 0.7 (50 psig)
L 2 way, mod., v = 1.5 (50 psig)
M 3 way, mod., v = 1.5 (50 psig)
N 2 way, mod., v = 2.5 (50 psig)
P 3 way, mod., v = 2.5 (50 psig)
Q 2 way, mod., v = 4.0 (50 psig)
R 3 way, mod., v = 4.0 (50 psig)
Digit 29 Piping Package
0 None
A Ball valve supply & return
B Ball valve supply & manual circuit
setter return
Ball valve supply & auto circuit
setter
D Ball valve supply & return
w/strainers & unions
E Ball valve supply & manual circuit
setter w/strainers & unions
F Ball valve supply & auto circuit
setter w/strainers & unions
Digit 30 Control Type
A Fan Speed Switch
TU
D TU w/Trane I S
E Tracer® ZN.010
F Tracer® ZN.510
G Tracer® ZN.520
Digit 31 Control Options
D Unit mtd. fan mode switch (OHML)
K Wall mtd. fan mode switch (OHML)
V Unit mtd. zone sensor, w/SP
rotary, & fan mode switch
(OAHML),
W Wall mtd. zone sensor w/
SP rotary, & fan mode switch
(OAHML),
X Unit mtd. fan mode switch, wall
mtd. setpoint dial zone sensor
Digit 32-34 Future Control Options
Digit 35 Control Function 3
0 None
2 ondensate overflow detection
Digit 3 Control Function 4
0 None
2 Low temperature detection
Digits 37 & 38 Future Control Options
Digit 39 Recessed Options
0 None
A Stand. 5/8 recessed panel
B 2 projection panel
2.5 projection panel
D 3 projection panel
E 3.5 projection panel
F 4 projection panel
G 4.5 projection panel
H 5 projection panel
J 5.5 projection panel
K 6 projection panel
L 2 falseback
M 3 falseback
N 4 falseback
P 5 falseback
Q 6 falseback
K 4.5
L 5.0
M 6.0
N 7.0
P 8.0
Q 9.0
R 10.0
T11.0
U 12.0
K 4.5
L 5.0
M 6.0
N 7.0
P 8.0
Q 9.0
R 10.0
T11.0
U 12.0

UNT-IOM-6 9
Receiving and Handling
UniTrane® fan-coil and Force Flo cabinet heaters ship in individual
cartons for maximum protection during shipment and for handling and
storage ease. Each carton has tagging information such as the
model number, sales order number, serial number, unit size, piping
connections, and unit style to help properly locate the unit in the floor
plan. If specified, the unit will ship with tagging designated by the
customer.
Complete the following checklist before accepting delivery of units to
detect any shipping damage.
o 1. Inspect each piece of the shipment before accepting it.
Check for rattles, bent carton corners, or other visible indications of
shipping damage.
o 2. If the carton appears damaged, open it immediately and
inspect the contents before accepting. Do not refuse the shipment.
Make specific notations concerning the damage on the freight bill.
Check the unit casing, fan rotation, coils, condensate pan, filters, and
all options or accessories.
o 3. Inspect the unit for concealed damage and missing compo-
nents soon after delivery and before storing. Report concealed
damage to the delivering carrier within the allotted time after
delivery (check with the carrier on the allotted time to submit a
claim).
o 4. Do not move damaged material from the receiving location if
possible. It is the receivers responsibility to provide reasonable
evidence that concealed damage did not occur after delivery.
o . Do not continue to unpack shipment if it appears damaged.
Retain all internal packing, cartons, and crate. Take photos of the
damaged material if possible.
o 6. Notify the carriers terminal of damage immediately by phone
and mail. Request an immediate joint inspection of the damage by
the carrier and consignee.
o 7. Notify the Trane sales representative of the damage and
arrange for repair. Have the carrier inspect the damage before begin-
ning any repairs to the unit.

10 UNT-IOM-6
This unit is intended for indoor use only. To protect the unit from
damage due to the elements and prevent it from possibly becoming a
contaminant source for IAQ problems, store the unit indoors. If indoor
storage is not possible, the Trane Company makes the following
provisions for outdoor storage:
1. Place the unit s) on a dry surface or raised off the ground to assure
adequate air circulation beneath unit and to assure that no portion of
the unit contacts standing water at any time.
2. Cover the entire unit with a canvas tarp only. Do not use clear,
black or plastic tarps as they may cause excessive moisture conden-
sation and equipment damage.
Note: Wet interior unit insulation can become an amplification site for
microbial growth (mold), which may cause odors and health-related
indoor air quality problems. If there is visable evidence of microbial
growth (mold) on the interior insulation, remove and replace the
insulation prior to operating the system. Refer to the Inspecting and
Cleaning the Internal Insulation section on page 123 for more
information.
Jobsite Storage