Johnson & Starley 42-451-14, Инструкции по установке, пусконаладке и обслуживанию

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FAN CONTINUES TO RUN AFTER HEATING IS TURNED OFF
CHECK FAN SELECTOR
SWITCH SETTING
SET FAN SELECTOR
SWITCH TO
AUTO
N
Y
IS
SWITCH SET
TO AUTO ?
CHECK SUMMER AIR
CIRCULATION
SWITCH
IS
SWITCH SET
TO OFF ?
DOES
FAN STILL
RUN ?
DOES
FAN STILL
RUN ?
SET FAN SUMMER
AIR CIRCULATION
SWITCH TO OFF
N
Y
Y Y
DOES
FAN STILL
RUN ?
DISCONNECT AIRFLOW
SENSOR
Y
DOES
FAN STILL
RUN ?
REPLACE
ELECTRONICS
MODULE
Y
IS
PILOT FLAME
TOO
BIG?
N
Y
ADJUST PILOT
FLAME TO CORRECT
SETTING
REPLACE
AIRFLOW SENSOR
N
5.2 ELECTRICAL
5.2.1 Mains.
a. The heater is supplied with mains cable (PVC sheathed, heat resisting to 85
O
C), 3-core Brown-Blue-Green/
Yellow, 6A, 0.75mm2), connected to a terminal block and exiting through the heater at the right hand top
front. The cable is suitable for a 230V 50Hz supply and shall be connected to the fixed wiring using a double
pole switched, fused spur, incorporating a protective earth link. The fuse fitted shall be rated 5A to BS1362.
Connections shall be in accordance with the current edition of I.E.E Regulations BS 7671
.
b. Facility is provided to electrically switch an externally installed Johnson and Starley Water Heater (HIJAN
6F). For connection details, refer to Figs. 5 and 6. To use this facility on a non-MODAIRFLOW heater, it is
necessary to fit a relay (J & S Pt No 1000-0500910), for 230V switching.
c. MODAIRFLOW Models : An electronic controller (Thermista-stat) is supplied which acts as a room
thermostat.
d.
Non-MODAIRFLOW models
: A 24V room thermostat (not supplied), that complies with BS 800, BS 3955
and BS 4201 is essential to ensure close control of comfort conditions. An anticipator is located within the
thermostat and is graded in amps. The anticipator should be checked and adjusted to 0.2A.
5.2.2
Thermista-stat/Room Thermostat and its location.
a. The Thermista-stat/Room Thermostat should be located where there is free air circulation approx. 1.5m (5ft)
from the floor.
b. Avoid the following locations:
i)
In a room where temperature is greatly affected by the sun or any other heat source, e.g. radiant fire,
wall light fittings or TV set.
ii) Near an outside door or windows, or on an outside wall.
iii) Where affected by warm air ducts, diffusers, waste pipes or the heater itself.
iv) Where subject to vibration.
c. For MODAIRFLOW models, connect Thermista-stat wires to control panel terminals ‘4’ and ‘5’ (see Fig. 5a
and 6a), connection polarity being important, cve side on control panel to +ve side on the
Thermista- stat.
d. For non-MODAIRFLOW models, connect room thermostat wires control panel terminals ‘16’ and ‘17’ (see
fig. 5b)
5.3 GAS (See BS 5864 and BS 6891)
5.3.1 An independent gas supply pipe from the meter is to be preferred wherever possible. When this is not possible, the
pipe must be capable of taking the complete input of the heater and all other gas appliances being served by this
same pipe. This supply should be suitably sized to conform to British Standards requirements of no more than 1.0
mbar (0.4in wg) pressure drop (See table of discharge in BS 6891).
5.3.2 The 1/2in union gas cock (supplied) must be fitted to the gas inlet of the heater for easy isolation during servicing.
The gas pipe should be so fitted and installed as to be durable, substantial and gas tight. To assist in determining
where a gas connection may not be tight, a leak detection fluid should be applied around the connection. Under no
circumstances should a flame be used to locate a gas leak. Gas entry to the air heater is through either side to a Rc1/
2 (1/2in BSP. external [taper] thread).
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
FAN CONTINUES TO RUN AFTER HEATING IS TURNED OFF