Space Ray LTU Series Two Stage - Manual (Page 19)

Form #42710010
May 2013
-17-
FIELD CONNECTION FIELD CONNECTION FIELD CONNECTION FIELD CONNECTION AND THERMOSTAT AND THERMOSTAT AND THERMOSTAT AND THERMOSTAT WIRING DIAG WIRING DIAG WIRING DIAG WIRING DIAGRAMS RAMS RAMS RAMS
A. A. A. A. LOW
LOW LOW LOW VOLTAGE ( VOLTAGE ( VOLTAGE ( VOLTAGE (24 24 24 24V) THERMOSTAT CONNECTIONS V) THERMOSTAT CONNECTIONS V) THERMOSTAT CONNECTIONS V) THERMOSTAT CONNECTIONS – – – – SINGLE HEATER PER THERMOSTAT SINGLE HEATER PER THERMOSTAT SINGLE HEATER PER THERMOSTAT SINGLE HEATER PER THERMOSTAT
Ground
N Neutral
L1 Hot (120V)
Continue To
Additional
Heaters
Fused
Disconnect
Switch Control Box
C Hi Lo
Two-Stage Thermostat
(field supplied)
High Fire Low Fire
C Hi Lo
Two-Stage Thermostat
(field supplied)
High Fire Low Fire
Control Box
Thermostat Connection
Block
B. B. B. B. LLLLOW
OW OW OW VOLTAGE ( VOLTAGE ( VOLTAGE ( VOLTAGE (24 24 24 24V) THERMOSTAT CONNECTIONS V) THERMOSTAT CONNECTIONS V) THERMOSTAT CONNECTIONS V) THERMOSTAT CONNECTIONS – – – – MULTIPLE HEATERS MULTIPLE HEATERS MULTIPLE HEATERS MULTIPLE HEATERS PER THERMOSTAT PER THERMOSTAT PER THERMOSTAT PER THERMOSTAT
Ground
N Neutral
L1 Hot (120V)
Fused
Disconnect
Switch
Continue To
Additional
Heaters
24 V Transformer
1.5 VA rating per relay
(field supplied) 24 V
Continue To
Additional
Heaters
Control Box
Two-Stage Thermostat
(field supplied)
High Fire Low Fire
RELAY BOARD
LO 24V HI
LO C HI
LO
FIRE HI
FIRE
C Hi Lo
RELAY BOARD
LO 24V HI
LO C HI
LO
FIRE HI
FIRE
C Hi Lo
3/16” Quick
Connect Terminals
1/4” Quick
Connect
Terminals
Relay Kit externally
Mounted
(PN 44195000)
Thermostat
Connection Block
Control Box
C. C. C. C. MANUAL SWITCH
MANUAL SWITCH MANUAL SWITCH MANUAL SWITCH CONNECTIONS CONNECTIONS CONNECTIONS CONNECTIONS – – – – SINGLE HEATER SINGLE HEATER SINGLE HEATER SINGLE HEATER OPERATION OPERATION OPERATION OPERATION PER PER PER PER DUAL DUAL DUAL DUAL MANUAL SWITCH MANUAL SWITCH MANUAL SWITCH MANUAL SWITCH
Ground
N Neutral
L1 Hot (120V)
Continue To
Additional
Heaters
Fused
Disconnect
Switch
Note: Low Fire Switch MUST stay on during High Fire running.
Control Box
C Hi Lo
Low Fire
Manual Switch
(field supplied)
Thermostat Connection
Block
High Fire
Manual Switch
(field supplied)
Control Box
C Hi Lo
Low Fire
Manual Switch
(field supplied)
High Fire
Manual Switch
(field supplied)