A) Checks before lighting the Air
Heater
The following checks must be made before lighting the
heater(s)
a) Ensure that the Auto/OFF switch on the heater panel is
switched to OFF
b) Ensure that the electrical supply to the heater is
switched ON.
b) Check that the MC200 is calling for heat (See MC200
User Instructions).
c) Check that any other controls are calling for heat and,
if there is a Summer/Winter mode, it is set to Winter.
d) Check that the overheat (Limit) thermostat has not
operated.
B) Lighting the Air Heater
1) Gas-fired Heaters
a) Switch the Auto/OFF switch to Auto.
b) The main air fans will start. Note that, with the excep-
tion of the TE21, the fan start may be staggered in which
case the second fan will not start until the first is running.
c) The burner air fan will run and after a pre purge period
of approximately 30 seconds the ignition spark will be
generated.
TE21
The main gas valves will open and the main burner will be
established
TE 31, 41 & 61
The start gas valves will be opened and a start gas flame
established. When a start gas flame is established the
main gas valves will be energized and the start gas flame
will expand to main flame.
NOTE: If the main burner or a start gas flame fails
to establish the burner will go to lockout and the
lockout indicator / reset button on the burner
control box will be illuminated. To restart the
burner push the lockout reset button. Additional,
more easily accessible, controls may be fitted
that mimic the lockout indicator and reset button
functions.
If the unit will not light after four or five attempts
then shut down the unit and call in a service engi-
neer.
2) Oil-fired Heaters
NOTE: If it is not possible to light the heater after
2/3 attempts contact the local service company.
a. Switch on the electrical supply at the isolator.
b. The main air fans will start. Note that, with the
exception of the TE21, the fan start may be stag-
gered in which case the second fan will not start
until the first is running.
c. The burner air fan will run and after a pre purge
period of approximately 30 seconds the ignition
spark will be generated and the oil valve opened.
The main burner will then fire.
NOTE: If the burner fails to light it will go to
lockout and the lockout indicator / reset button on
the burner control box will be illuminated. To
restart the burner push the lockout reset button.
If the unit will not light after two or three attempts
then shut down the unit and call in a service engi-
neer.
C) To Shut Down the Air Heater
1) For Short Periods:
Set the MC200 to OFF (See MC200 User Instructions).
2) For Long Periods:
Set the MC200 to OFF. Wait approximately 4-5 minutes
for the residual heat in the heat exchanger to be dissipat-
ed and then turn off the gas or oil supplies and electric
supplies to the heater.
D) Description of Operation
Important: All heaters must be controlled by the fitted
controls and not by use of the main switch in the electrical
supply to the heater.
TE heaters are designed for the main air fans to run
continuously thereby continually circulating the air in the
building. The burner start up sequence will commence
when the MC200 calls for heat. The burner air fan will run
and after a pre purge period the burner will light.
When the MC200 is satisfied the burner will be turned off.
On Hi/Lo and Modulating units the firing rate of the burner
will be adjusted automatically by the MC200 to suit the
heat demand.
1) Summer / Winter Modes
Certain types of external controls will provide for two
modes of operation i.e.
Summer: The heater fans alone will run at the
dictate of the MC200 to provide air
movement.
Winter: The heater will operate normally.
E) Fan and Limit Control
The fan and limit controls are mounted towards the top of
the side panels of the heat exchanger section .
i) Main Air Fan MAN / Auto
When the white button (Refer to Figure 1 below) is
pushed in the fans will run continuously i.e not controlled
by any external controls e.g. Timeclock. When the white
button is pulled out the fans will start and stop automati-
cally in conjunction with the burner. See Section 4.
ii) Limit Thermostat
This operates if high temperatures within the heater are
detected, the burners are turned off and a red indicator
light on the front of the heater is illuminated. The fault
condition must be identified and rectified and the thermo-
stat manually reset. Remove the black cover cap and
press the exposed button to reset.
When the unit has cooled push the reset switch on the
front of the heater to reset the limit thermostat interlock
relay, the red indicator light will go out and the unit is oper-
ational again.
Note: The limit thermostat(s) can only be reset
once the unit has cooled down.
Unless the cause of the fault condition is readily
obvious, for example a power cut whilst the
heater was operating, a service engineer should
be contacted.
F) Maintenance
Regular servicing is essential to maintain efficient, reliable
and safe operation of the heater. Users are strongly
recommended to have the heater serviced at least annu-
ally and preferably at the end of the heating season.
G) IMPORTANT
Free access must be maintained to and around
the heater for servicing purposes and the air
supply to the heater must not be restricted in any
way. Combustible materials must not be stored
adjacent to the heater.
All Powrmatic heaters use gas, or oil, and
electricity to power them, they may also contain
moving parts such as pulley belts.
It would be hazardous to tamper with or attempt
to service unless you are a competent person in
the field of Gas and Electrical work.
If you have any safety questions reference the
servicing and installation of any of our heaters
please do not hesitate to contact our head office
for expert advice.
Your safety is paramount to us.
For gas fired heaters only:
If at any time a gas leak is suspected turn OFF
the gas supply
- DO NOT USE A NAKED FLAME - and contact
the local gas undertaking immediately.
Gas Safety (Installation & Use) Regulations
It is law that all gas appliances are installed,
adjusted and, if necessary, converted by qualified
persons* in accordance with the latest edition of
the above regulations. Failure to install applianc-
es correctly can lead to prosecution. It is in your
own interests and that of safety to ensure that the
law is complied with.
* An approved class of person listed on the gas
register.
TE Powrmaster Heater Range Issue 4.0 March 2015 Page 5
PUSH MAN
PULL AUTO
Honeywell
Fig 1. Limit Thermostat
White
Fan
button
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