www.johnsonandstarley.co.uk
10
8
6.
COMMISSIONING
6.1
PREPARATION:
6.1.1
Ensure that:
a.
Gas and Electrical supplies are
OFF.
b.
Filter, fan and fan compartments are free from obstructions.
c.
All registers or grilles are open and conform to design specifications.
d.
Return, relief and ventilation air installations are adequate.
6.2
SYSTEM BALANCING:
6.2.1
Set the Air Heater electrical supply ON.
6.2.2
Set the ‘SUMMER AIR CIRCULATION’ switch to ‘
ON
’.
6.2.3
Balance the ducting system to provide the required volume proportions at the warm air outlets.
NOTE:
If the system includes ceiling diffusers, air velocities through these should be NOT LESS THAN 1.5m/s (300 ft/
min), except for very small rooms (i.e., bathrooms etc.). Outlet faces may require partial blanking in order to achieve this.
6.3
IGNITION OF PILOT AND MAIN BURNERS:
WARNING:
If the pilot light is extinguished either intentionally or unintentionally, no attempt should be made to
relight the gas for a minimum of 3 minutes. Ensure that the Electrical supply Time Control and Selector switches are set to
‘OFF’.
6.3.1
Set the Thermista-stat/room thermostat to its lowest or
OFF
setting.
6.3.2
On the Multifunctional Control, remove the Outlet Pressure test point cover, and fit a pressure test gauge
(refer fig. 4).
6.3.3
Turn the heater Gas supply
ON
, test for gas soundness and purge the whole gas pipe as described in BS 6891.
6.3.4
Referring to Fig .4, press and hold the OPERATING CONTROL, and whilst observing the Pilot Burner,
repeatedly press the Piezo igniter button until Pilot burner ignites.
6.3.5 After 20 seconds release the OPERATING CONTROL and let it spring out; ensure that Pilot Burner remains
alight. If the Pilot Burner extinguishes, rotate the OPERATING CONTROL clockwise to the ‘
l
’ position and
ensure that the control is fully reset. Wait three minutes and repeat steps 6.3.4 and 6.3.5 until the Pilot Burner
remains alight.
6.3.6 Ensure that the pilot flame envelops the thermocouple tip, adjusting the Multifunctional Control Pilot Adjuster as
required (refer Fig. 3).
6.3.7
Set the Heater Electricity supply
ON.
6.3.8
Set the Time Control to the required Heating On periods.
6.3.9
Set the Selector switch to ‘TIMED’.
6.3.10 Set the Thermista-stat or room thermostat to MAXIMUM.
6.3.11 Ensure that the Main Burner has now ignited.
6.3.12 Test for gas leakage at the supply, Multifunctional Control, Pilot and Main Burners using a proprietary detection
fluid, sealing any leaks found.
6.3.13 Allow the heater to operate for a minimum of 15 minutes to ensure stability.
MAIN BURNER ONLY FIRES FOR SHORT PERIODS
DEFECT IS IN
THERMISTA-STAT
INSTALLATION WIRING
DOES
BURNER
STAY
LIT?
Y
REPLACE
THERMISTA-STAT
BRIDGE TERMINALS AT
THERMISTA-STAT
Y
IS
POLARITY
OK ?
N
RECTIFY
CHECK THERMISTA-STAT
CONNECTIONS POLARITIES
Y
REPLACE
ELECTRONIC MODULE
N
DOES
BURNER
STAY
LIT?
BRIDGE THERMISTA-STAT
AT HEATER
Y
SET THERMISTA-STAT
TO MAX
IS
THERMISTA-
STAT
SET TO
MAX ?
N
N
21
Thermocouple
Pilot Burner
Electrode
Fig. 3
PILOT BURNER ASSEMBLY
6. COMMISSIONING
Summary of Contents for 42-451-15
Page 25: ...25 Sales Spares Replacement Help Line 01604 762881 Fig 5b Non MODAIRFLOW CIRCUIT DIAGRAM...
Page 26: ...www johnsonandstarley co uk 26 12 FUNCTIONAL DIAGRAMS Fig 6a Non MODAIRFLOW FUNCTIONAL DIAGRAM...
Page 27: ...27 Sales Spares Replacement Help Line 01604 762881 Fig 6b Non MODAIRFLOW FUNCTIONAL DIAGRAM...
Page 28: ...www johnsonandstarley co uk 28 13 DIMENSIONS Fig 7 HI SPEC J90 DIMENSIONS...
Page 29: ...29 Sales Spares Replacement Help Line 01604 762881 14 NOTES...
