Powrmaster TE21, TE31, TE41, TE61 User, Installation And Servicing Instructions

Users, Installation & Servicing Instructions

Gas & Oil Fired Heaters

Direct Drive Fans

WARNING: THIS APPLIANCE MUST BE EARTHED

CE

TE Range Users, Installation & Servicing Instructions Issue 7.0 April 2014

The Powrmaster TE

Range

Dear Customer

This is to certify that this heater is guaranteed for two years parts and one year
labour from the date of original commissioning. The heater must be
commissioned within 4 weeks of installation.

The heat exchanger, where fitted, is guaranteed (parts only) for a further eight
years, chargeable on a sliding scale basis, price relative to age.

To make a claim

In the first instance you must contact your appliance supplier, or installer and
provide:-

1. The appliance type and serial number.

2. The original commissioning documentation.

3. As much detail as possible on the fault.
Your supplier, or installer, will then contact Powrmatic to make a guarantee

claim on your behalf.

Conditions of Guarantee

1. The heater must have been installed by a competent recognised installer, and
in accordance with the manufacturers instructions, building regulations and
local regulations.

2. The heater has been professionally commissioned, within 4 weeks of
installation, and a copy of the Commissioning Sheet returned to Powrmatic.

3. The heater has been maintained on a yearly basis by a competent servicing
company.

4. The heater has been used in accordance with the manufacturers instructions.

5. The correct specification fuel has been used

6. No unauthorised repairs or modifications have been made.

7. Powrmatic ‘General Conditions of Sale’ have been observed.

8. Except for the obligation of Powrmatic Ltd to perform warranty repairs during
the guarantee period, Powrmatic will not be liable in respect of any claim for
direct or indirect consequential losses, including loss of profits or increased
costs arising from loss of use of the heater, or any event arising there from.

Exclusions

1. Gaskets and fan belts are not included in the guarantee

Important: This certificate must

be kept with the appliance

Certificate of Guarantee

Powrmatic Ltd, Hort Bridge, Ilminster, Somerset, TA19 9PS

tel: [phone] fax: [phone]

web: www.powrmatic.co.uk e-mail: [e-mail]

Installed

Date: ___________ Signed______________________________________ Installer

Commissioned

Date: ___________ Signed________________________ Commissioning Engineer

Failure to provide a copy of the Commissioning Sheet invalidates the heater warranty

1

1. 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.

2. Lighting the Air Heater

2.1 Gas-fired Heaters

1. Switch the Auto/OFF switch to Auto.

2) The main air fans will start. Note that, with the exception of
the TE21, the fan start may be staggered in which case the
second fan will not start until the first is running.

3) 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 engineer.

2.2 Oil-fired Heaters

NOTE: If it is not possible to light the heater after 2/3 attempts
contact the local service company.

1. Switch on the electrical supply at the isolator.

2. The main air fans will start. Note that, with the exception of
the TE21, the fan start may be staggered in which case the
second fan will not start until the first is running.

3. 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 engineer.

3. To Shut Down the Air Heater

3.1 For Short Periods:
Set the MC200 to OFF (See MC200 User Instructions).

3.2 For Long Periods:
Set the MC200 to OFF. Wait approximately 4-5 minutes

Users Instructions

for the residual heat in the heat exchanger to be dissipated
and then turn off the gas or oil supplies and electric supplies
to the heater.

4. 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.

4.1 Summer / Winter Modes

Summer: The heater fans alone will run at the dictate of the

MC200 to provide air movement.

Winter: The heater will operate normally.

5. 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 automatically in conjunction with
the burner. See Section 4.

PUSH MAN

PULL AUTO

Honeywell

Fig 1. Fan Thermostat

White

Fan

button

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 thermostat 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

2

the heater to reset the limit thermostat interlock relay, the red
indicator light will go out and the unit is operational 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.

6. 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 annually and preferably at
the end of the heating season.

7. 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
appliances 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.

1. INTRODUCTION

The Powrmatic Powrmaster TE range of gas fired forced draught,
closed flue, fanned circulation air heaters cover a heat output
range of 88 kW (300,000 Btu/h) to 806 kW (2,750,000 Btu/h)
and are intended primarily for heating commercial or industrial
premises.

Fuel Types

Gas fired units are certified for use on Natural Gas, Group H ­G20, Group L - G25 and Propane - G31.

Oil fired units are supplied as standard for use with 35sec fuel
and can be supplied for use with 28sec fuel as an option.
In accordance with guidelines from our burner supplier, Riello,
the burners fitted to Powrmatic oil-fired heaters are suitable for
fuels with a bio content of up to 10% only.

For fuels with a bio content of more than 10%, please consult
our Technical Department.

The heaters are for floor mounting, freeblowing applications
only.
TE heaters are also available as /EA variants which are suitable
for siting externally.

TE heaters have a double axial fan assembly fitted upstream of
the combustion chamber / heat exchanger assembly to circulate
the air being heated and the system design is for the fans to run
continuously thereby constantly circulating the air in the building.
Each fan is directly mounted onto the drive motor shaft and the
speed is governed by an inverter. Heaters are fitted as standard
with fully automatic monoblock On/Off forced draught gas
burners and monoblock gas control assemblies. High/Low or

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CONTENTS

Section Title Page

1. Introduction 3

2. Technical Data 4

3. General Requirements 5

4. Installation 6

5. Commissioning & Testing 7

6. Servicing 8

7. Fault Finding 10

8. Short List of Parts 10
Appendix A 11

Tables Title Page

1. Dimensions (S.I. Units) 4

Figure Title Page

1. Direction of Fan Rotation 7

2. Main Control Panel 8

3. Taper Lock Bush Detail 8

4. Fan/Limit Thermostat 9

modulating burners are available as options.
Unless otherwise specified each heater is fitted with an MC200
electronic time and temperature control.

Each air heater must be connected to a closed flue system only.

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 current issue of the above regulations. Failure to install
appliances 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.