7
1.7 Electrical
Connections
This appliance must be electrically grounded
Supply 120V 60Hz single phase.
Standard heater 0.16HP.
Current rating 1.2 amp max (inductive).
Fuse: external 3 amp.
Important: All electrical work should be done by
a qualified electrician in strict accordance with
the National Electrical Code ANSI/NFPA 70. or
Canadian codes CSA C22.1
The electrical supply to the heater is by three
wires: live, neutral and ground connections.
Install in accordance with all state & local
codes.
It is recommended that the electrical circuit
controlling the heater or group of heaters
include thermostats and if required manual
control switches. All such controls and switch
gear must be rated to handle the total inductive
load of the circuit they control. For large
installations the use of relays or contactors
should be considered.
Control panels are available from the
manufacturer incorporating multiple Black Bulb
Thermostats controlling up to 10 heaters per
thermostat for zone control of the heated area.
(Control Panels
are not A.G.A/CSA
design certified)
Where alternative
m a n u f a c t u r e s ’
controls are used,
please refer to
their instructions
for their siting and
installation details.
Table 3 Gas Supply Pressures
Gas Type
Natural Gas
Max Supply Pressure (in W.C)
10.0
Min inlet gas supply (in W.C)
7.0
Gas Supply
Connection ½” N.P.T internal thread
WARNING:
Before making electrical
connections, switch OFF the main
electrical disconnect. There may be more
than one disconnect switch. Lock out
and tag switch with a suitable warning
label.
Electrical
shock
can
cause
personal injury or death.
Switch with
Fuse
Fan plugs into burner
Figure 5. Typical VSXUS Wiring Connections
WARNING:
FIRE OR EXPLOSION HAZARD - Expansion of the radiant pipe occurs with
each firing cycle causing the burner to move with respect to the gas line. This can
result in a gas leak producing an unsafe condition. It is therefore essential to provide some
flexibility in the final gas line connection - preferably by use of an approved armoured
flexible connector or stainless steel expansion loop as shown in the drawings.