
36
DST
Series
3.0
Installation
•
Verify Proper Inlet Pressure
Verify Proper Inlet Pressure
Before starting up the unit, smell all around the unit heater for gas. Be sure to smell next to the
floor because some gas is heavier than air and will settle on the floor.
When turning the gas shut off valve, only use your hand. Never use tools to turn the knobs, as it
may damage the valve resulting in a fire or explosion. If the knob is stuck, do not try to repair it,
contact a qualified service technician or your local gas company.
To verify the proper inlet pressures, follow the following steps:
1
Turn off the gas supply at the manual gas shut off valve.
2
Remove the inlet pressure tap plug on the gas control valve (see Figure 3.14).
3
Install a 1/8 inch NPT hose connector and connect the pressure gauge tube.
4
Turn on the gas supply at the manual gas shut off valve.
5
Turn on the electrical power to the heater.
6
To light the main burners, set the room thermostat to a point above room temperature.
NOTE:
This heater is equipped with an ignition device, which automatically lights the burner.
This heater cannot be lighted manually. Do not try to light the burner by hand.
Verify
minimum
inlet gas supply pressure:
7
Turn on all other gas appliances that are on the same supply line. If the other gas appliances
have multiple inputs, set it to the maximum rating.
8
Observe the pressure rating on the pressure gauge.
The minimum inlet gas supply pressure for:
• Natural gas is 5.0 inches W.C.
• Propane gas is 11.0 inches W.C.
9
The voltage type and frequency listed on the rating label matches that of your application.
9
The unit is properly grounded as per the National Electrical Code, ANSI/NFPA 70 or
Canadian Electrical code CSA C22.1 Part 1.
9
The unit is properly mounted to a permanent structure able to bear the weight of the unit.
9
The proper mounting height is observed for the application.
9
All clearance to combustible distances or service clearances are maintained.
9
The unit is properly isolated or installed to prevent excessive vibration.
9
The unit is level horizontally.
9
Venting is properly installed in accordance with this manual and any applicable codes.
9
Combustion air supply is sufficient to support proper operation at all times.