Carrier 48DM - Manual

Combination Heating/Cooling Units
INDEX
MODEL VOLTS/PH
F
48DL,DM006300
48DL,DM006310
230/1
48DL,DM006400
48DL,DM006410
208/3
48DL,DM0Т65Т0
48DL,DM006510
230/3
48DL,DM006600
48DL,DM006610
460/3
LABEL DIAGRAM
Dwg No.
48DL504344
48DL504334
48DL504364
o
O
□
LEGEND
Contactoi
Cooling Compensator
Com|)i essoi
Gas Valve
Heal ArUicipalor
Ignition Commi
Indooi Fan Moloi
Indoor Fari Motor Capaoiloi
Indooi Fan Relay
Limit Switch
Outdoor Fan Motor
Outdoor Fan Motot Capacitor
Ouad Ter minai
Run Capacitor
Roll-Out Swilcii
Star t Capacitor
Start Relay
Thermostat Cooling
Time Delay Relay
Thermostat Healing
r I atisiormcr
To indicate common potential only,
not to represent wire
Field F-^ower Wires
Fiiild Control Wires
Field Ground Wites
Field Splice
Junction
Component Conriections (marked)
Comporront Connections (uninai ked)
Tliermostat Conriectiotis
NOTES
1. Fan motors are thermally protected.
2 Terminations in low-voltage connection box
suitable for connection of NFC Class 2 control
circuit wiring at 24 volts.
3. Wire units in accordance with local codes
4 When original factory wiring must be replaced,
use the same type of wire or equivalent
5 Use copper or copper-clad conductors only
CONTROL CENTERS *
No. 1 No. 2 No. 3
HH07AT074 HH01AD042 HH01AD040
Thermostat 1 hermostnt Thermostat
and and and
HH93AZ076t HH93AZ042 1IH93AZ040
S u b b a s e Subbase Subbase
*Contml Centers shown on Label Diagrams
¡Automatic Changeover Subbase
HH93AZ080 is suitable for use if manual changcovei is
desired
INITIAL START-UP SEQUENCE
Start-Up Sequence, Natural and LP Gas Units With
Intermittent Spark Ignition of Pilot, indoor (evap­
orator) fan motor time delay relay and Essex
SX242 gas valve. (See Caution above )
MANUAL SEQUENCE
1 With power off turn manual gas valve knob to
ON position
2 Set thermostat selector switch at HEAT posi­
tion and set thermostat dial a few degrees above
room temperature.
3 Turn power on.
AUTOMATIC SEQUENCE
1 Pilot valve opens, spark ignition and indoor fan
time delay relay energize.
2 Gas flows to pilot and ignites Pilot flame
sensing probe permits energizing of the main
gas valve Gas flows to main burner and ignites
3 Time delay relay starts indoor fan motor in 30
— 45 seconds.
4. When thermostat setting is satisfied, main gas
valve and pilot gas valve close and flames are
extinguished
5 Indoor fan motor stops in 1- to 1-1/2 minutes
© Cairiei Corporation 1977 Forni 48DL 1W