Electrical Connections - Space-Ray LTU 160/100-N7 Installation And Operation Instructions Manual

GAS TYPE
Natural Gas
Propane Gas
*Minimum permissible gas supply pressure for purpose of input adjustment.
7" W.C. for LTS/U 150-250
1
12" W.C. for LTS/U 180-250
2
Note: For all installations higher than 2000 ft. above sea level, please consult the factory regarding
recommended de-rating of heaters.
16.0)

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 from the heater as listed on the nameplate on
the heater.
Form #43155010
Dec 2017
GAS PRESSURE TABLE
MANIFOLD PRESSURE
High Low (2-stage only)
3.5" W.C. 1.4" W.C.
10.0" W.C. 4.0" W.C.
SUPPLY PRESSURE
Minimum*
5" W.C.
1
11" W.C.
2
-37-
Maximum
14" W.C.
14" W.C.
*