Nortek Reznor UDSA-4E 011, Установка, пусконаладка, обслуживание

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I-UDSA-UK (02-19) PN 06 00116 UDSA R3, page 11
The electrical installation may only be carried out by an
appropriately qualified person current to IEE Regulations. The
supply line to the heater should include a main switch. The
minimum clearance distance between the contacts must be
more than 3 mm.
All electrical connections should be made in the heater control
compartment. Screw type terminals are provided. Connections
should be in accordance with the terminal markings and the
wiring diagram affixed to the air heater.
Attention: Serious damage can occur to burner relay when
faulty connection of thermostat, reset switch or burner
failure lamp.
Switching of wires for reset switch and flame failure (e.g.
in a remote control box) will destroy the burner relay.
The minimum external control required for the air heater is
a room thermostat. It is essential that the main input line
and neutral to terminals L and N remain live at all times
even when the heater is switched off to ensure correct
operation of the unit.
A burner reset switch with red indicator light is fitted on the
heater. To add a remote reset button, make connections to the
terminals in the electric box as indicated on the wiring diagram.
DANGER: THIS APPLIANCE MUST BE EARTHED.
THERMOSTAT LOCATION
Do not attempt to control more than one air heater from
a single thermostat or control panel unless a properly
wired relay is fitted. Follow the instructions supplied with
such panels.
The location of the room thermostat or sensor is very important.
It should not be positioned on a cold wall or cold surface. Avoid
location in draughty areas or where it may be influenced by
heat sources (e.g., the sun, process plant, etc.). The thermostat
should be mounted on a vibration free surface and mounted
about 1,5 metres above floor level. Follow the thermostat
manufacturers instructions. The thermostat must be suitable
for potential free contacts.
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ELECTRICAL CONNECTION
IMPORTANT: If the reset button requires activating for any
reason, the cause must be determined. After determining
and correcting the problem, restart the heater and monitor
long enough to ensure proper operation (approximately
5 minutes).
An orange indicator light is fitted on the heater to signify when
the burner is on.
Ensure that all cables and installers wiring are fixed to the
gas pipe and that they do not touch the combustion collector
box.
Warnings: All components of a gas supply system must
be leak tested prior to placing equipment in service.
NEVER TEST FOR LEAKS WITH AN OPEN FLAME.
Failure to comply could result in personal injury, property
damage or death.
This appliance is equipped for a maximum gas supply
pressure of 50 mbar.
Pressure testing supply piping
Test pressures above 50 mbar : Disconnect the heater
and manual valve from the gas supply line which is to be
tested. Cap or plug the supply line.
Test pressures below 50 mbar : Before testing, close
the manual valve on the heater.
Figure 8 : Gas connection
Warning: Do not over tighten and do not rotate the gas
valve inside the heater control compartment.
The unit is equipped with a nipple that extends outside the
cabinet. The gas connection is 1/2-, 3/4-, or 1-inch, depending
on the size of the unit.
Leak test all connections by brushing on a leak detecting
solution.
Table 7 : Diameter gas connection
UDSA-4E
Natural Gas/Propane
Connection
(Inches)
011
→
030 1/2
035
→
100
3/4
120 and 145
1