Stelpro SFECM2321 - Page 5

5
INSSFECMI1016
15, 17.5 & 20 kW
L1
L2
GR
ELECTRICAL CONNECTIONS OF THE FURNACE
POWER CONNECTION DRAWINGS (MECHANICAL)
TRANSFORMER PRIMARY VOLTAGE SELECTION
The transformer primary is connected in factory to operate on 240 VAC (black and white wires)
22.5, 27.5 & 30 kW15, 17.5 & 20 kW10 kW
Note that this product must be connected by a qualied electrician according to the electrical and building codes effective in your
region. For 240 VAC connection, you can use copper or aluminum wire (75°C (165°F)), except for 27.5 kw and 30 kw models where only
copper wire is allowed.
This furnace must be connected to a 240/208 VAC power source. For 240V power supply, either copper or aluminum wires can be used, except for
27.5 and 30kW models where only copper wire can be used (see the power connection illustration below). If you want to energize the furnace at
208 VAC, you must change a connection on the 24 V terminal board of the transformer (see the illustration below). Refer to the local and national
electrical codes to know which wire size, fuses and circuit breakers are required.
An optional neutral terminal junction (SCOND) can be installed in the electrical compartment of the furnace. It is included in 120 VAC models and
on request for all the other models. It is used to connect a neutral line conductor at the entrance. Some auxiliary devices, like a dehumidier, are
supplied by a 120 VAC power source. The neutral connector allows to supply auxiliary devices with a 120 VAC power source from the furnace.
HAR-097
HAR-096