Electrical Connections - Space-Ray PTS Series Installation And Operation Instructions Manual

GAS TYPE High
Natural Gas 3.5" W.C.
Propane Gas 10.0" W.C.
* Minimum permissible gas supply pressure for purpose of input adjustment.
7" W.C. for Models 150-200
1
12" W.C. for Model 200
2
15.0)

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.
5. Connection to the power supply is provided by an 18/3 gauge x 72" long cord with grounded 3 prong plug.
6. The post purge function of the burner (fan on for 30 seconds after the call for heat) will only be enabled
when using a 24 Volt thermostat. With the line Voltage thermostat post purge operation is disabled.
7. If any of the original wire as supplied with the appliance must be replaced, it must be replaced with wiring
material having a temperature rating of at least 105ºC. (18 Ga. CSA 600V Type TEW)
8. 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.
GAS PRESSURE TABLE
MANIFOLD PRESSURE
Low (2-stage only)
1.4" W.C.
4.0" W.C.
-36-
SUPPLY PRESSURE
Minimum* Maximum
5" W.C. 14" W.C.
1
11" W.C. 14" W.C.
2
Form 43343330
May 2021