Electrical Connections - Space-Ray LTU SERIES Installation And Operation Instructions Manual

18.0)

ELECTRICAL CONNECTIONS

1. All electric wiring shall conform to the latest edition of the National Electrical Code (ANSI/NFPA No. 70), or the code
legally authorized in the locality where the installation is made.
2. The unit must be electrically grounded in accordance with the National Electrical Code (ANSI/NFPA No. 70-latest edition).
In Canada, refer to current standard C22.1 Canadian Electrical Code Part 1.
3. The wiring providing power to the heater shall be connected to a permanently live electrical circuit, one that is not
controlled by a light switch.
4. The power supply to the unit should be protected with a fused disconnect switch or circuit breaker. A service switch, as
required by local codes, shall be located in the vicinity of the heater (check local codes for allowable distances) and
should be identified as Heater Service Switch. All electrical wiring must be located in accordance with the required
Clearances to Combustibles below the heater as listed on the nameplate on the heater.
5. When connecting the supply circuit to the heater, wiring material having a minimum size of 14 AWG and a temperature
rating of at least 90ºC shall be used.
6. LTS SERIES ONLY: The installer will provide type SJO wire cable having minimum size of 18 AWG and connect the ends
to the draft inducer junction box and the control box. Secure with 3/8" connectors as previously described in the
attachment of the control box and draft inducer. Connect wire leads as shown in the Connection Wiring Diagram. The
SJO cable should be located and secured to protect it from mechanical damage.
7.
CONNECTION WIRING DIAGRAM — Direct Spark Ignition — (LTU40-75 MODELS ONLY)
Circuit d'origine
Connexions client
Plaque à
bornes
Vers les autres
radiateurs
CONNECTION WIRING DIAGRAM — Direct Spark Ignition — (LTU80-250, LTS40-250 MODELS ONLY)
Circuit d'origine
Connexions client
Plaque à
bornes
Vers les autres
radiateurs
Form #43155260
Mar–05
Schéma de circuit de connexion
Moteur
d'amorce
d'aspiration
pressostat
Transformateur
bobine primaire 120ÊV
bobine secondaire 24ÊV
Schéma de circuit de connexion
Lampes témoins
Moteur
d'amorce
d'aspiration
Bloc de jonction
Fusible
pressostat
Câble SJO
Transformateur
(non compris)
bobine primaire 120ÊV
bobine secondaire 24ÊV
Lampes témoins
Armoire de commande
Robinet à gaz
Écartement
d'électrode
4,7Êmm
Haute tension
Bloc d'allumage
Armoire de commande
Robinet à gaz
Écartement
d'électrode
4,7Êmm
Haute tension
Bloc d'allumage
–33–
ENGLISH FRANCAIS
ENGLISH FRANCAIS