26
LEGEND
DCV —
Demand Controlled Ventilation
IAQ
—
Indoor Air Quality
LALS —
Low Temperature Compressor
Lockout Switch
OAT —
Outdoor-Air Temperature
POT —
Potentiometer
Potentiometer Default Settings:
Power Exhaust
Middle
Minimum Pos.
Fully Closed
DCV Max.
Middle
DCV Set
Middle
Enthalpy
C Setting
NOTES:
1. 620 ohm, 1 watt 5% resistor should be removed only when using differential
enthalpy or dry bulb.
2. If a separate field-supplied 24 v transformer is used for the IAQ sensor power
supply, it cannot have the secondary of the transformer grounded.
3. For field-installed remote minimum position POT, remove black wire jumper
between P and P1 and set control minimum position POT to the minimum
position.
Fig. 36 — EconoMi$erIV Wiring
4
3
5
2
8
6
7
1
10
11
9
12
PINK
BLACK
BLUE
NOTE 1
NOTE 2
RUN
500 OHM
RESISTOR
50HJ540573
ACTUATOR
ASSEMBLY
RED
WHITE
ECONOMISER2 PLUG
DIRECT DRIVE
ACTUATOR
OAT
LEGEND
OAT —
Outdoor Air Temperature Sensor
NOTES:
1. Switch on actuator must be in run position for economizer to operate.
2. 50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500-ohm resistor.
Fig. 37 — EconoMi$er2 Wiring
Summary of Contents for 48TM016
Page 3: ...3 Fig 2A Roof Curb Details 48TM016 025 ...
Page 4: ...4 Fig 2B Roof Curb Details 48TM028 ...
Page 6: ...6 Fig 4 Base Unit Dimensions 48TM016 020 ...
Page 7: ...7 Fig 5 Base Unit Dimensions 48TM025 ...
Page 8: ...8 Fig 6 Base Unit Dimensions 48TM028 ...
Page 32: ...32 Fig 46 MoistureMi er Dehumidification Operation Diagram TXV Thermostatic Expansion Valve ...
Page 48: ...48 Fig 57 Typical Wiring Schematic 48TM016 020 208 230 V Shown ...
Page 49: ...49 Fig 58 Typical Component Arrangement ...
Page 56: ...56 Fig 60 EconoMi erIV Functional View ...
Page 59: ......