Gas Type & Connection; Electrical Connection; Room Thermostat - Winterwarm Qwikshift QSG Installation Manual

D
QSG12 + 30 1200
Figure 9 - Wall support (standard)
4.3. Gas type & connection
The unit is suited for the use of natural gas or propane gas.
The specific gas type that a heater is set up for can be
found on the packaging labels and on the heater badge.
The heater can be converted to another gas type. Contact
your supplier for more information.
The working and standing supply pressure must be
a minimum of 17 mbar, and a maximum of 50 mbar,
measured at the inlet pressure nipple of the gas control in
the heater.
NOTICE The supply line's manual isolation valve must be
placed within reach of the heater.
NOTICE All gas supply lines must be mounted without any
mechanical tension.
NOTICE Always clean the inside of a gas supply line
before connecting it to the air heater. Place a gas filter in
the supply line when needed.
CAUTION! When using pressures above 60 mbar to test
the supply lines, always close the manual isolation valve of
the air heater.
For United Kingdom only:
INSTALLATION MANUAL AIR HEATER TYPE QSG
E
12000
The supply line for gas must comply with the Gas
Engineers publications UP-1 and UP-2, as well as with BS
6891.

4.4. Electrical connection

The electrical installation must comply with local and
national requirements as well as IEE regulations.
4.4.1. Power supply
The air heater requires an earthed power supply of 230 V/
AC 50 Hz. The control circuit is a four wire low voltage bus
communication.
Figure 10 - The air heater's connection clamps
• Connect the wires of the mains cable to the clamps
in the connection box (figure 10).
• The heater must be electrically isolated during
servicing. Use an isolation switch (min. 3 mm
contact opening gap), a power plug or a non-
switched fuse spur. See the electrical wiring
diagram in §11.
4.4.2. Fuse
One fuse is present on the air heater's control board (see
the electrical wiring diagram in §11.).
• When replacing this fuse, always use one of the
same type (5AT).

4.5. Room thermostat

The heater can only be controlled with one of the following
thermostats:
• Smart Controller: a modbus thermostat with touch
control, suitable for hybrid air heaters.
• A building management system (BMS) with
Modbus communication.
WARNING! Never use a room thermostat to interrupt the
electric power supply to the heater.
NOTICE This air heater cannot be controlled with a simple
ON/OFF thermostat.
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