Johnson & Starley 42-451-09, Инструкции по установке, пусконаладке и обслуживанию

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10. ELECTRICAL
WARNING: THIS APPLIANCE MUST BE EARTHED!
10.1 MAINS SUPPLY
a. The heater is supplied with mains cable (PVC sheathed, heat resisting to 85
o
C), 3-core Brown-Blue-
Green/Yellow, 6A, 0.75mm
2
), connected to a terminal block and exiting through the heater at the
right hand top. 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 BS 1362. Connections shall be in accordance with the current edition of
I.E.E Regulations BS 7671.
b. Fan Delay Control and Limit Switch are not adjustable and are set as follows:
i.
BASIC Models Fan delay control closes at 54°C± 4.5°C; opens at 40°C±3°C.
ii.
All Models
Limit Switch opens at 80°C; closes at 60°C.
c. SYSTEM E-T MODELS An electronic controller (Thermista-stat) is supplied which acts as a
room thermostat.
d.
BASIC 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.
10.2 THERMISTA-STAT & IT’S LOCATION
a. The thermista-stat should be located where there is free air circulation and positioned approximately
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 it will be affected by warm air ducts, diffusers, waste pipes or the heater itself.
iv. Where it will be subjected to vibration.
c. Connect the thermista-stat wires to terminals ‘7’ and ‘8’ on the terminal block, see Figure 14 & 15..
11. GAS (See BS 5864 and BS 6891)
11.1 The local gas supply conditions MUST be adequate for the specified burner pressures as stated in the
technical specification (paragraph. 1.3)
11.2 An independent gas supply pipe from the meter is to be preferred wherever possible. Where 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 the same pipe. This supply should be suitably sized to conform to British Standards requirements
of no more than 1.0 mbar (0.4” wg) pressure drop (See Table of discharge in BS 6891).
11.3 The ½” union gas cock (supplied) MUST be fitted to the gas inlet of the heater for easy isolation during
servicing. The gas pipe should be fitted and installed so 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 to a Rp ½ (½” BSP. internal [parallel] thread).
12. FITTING INSTRUCTIONS
CAUTION: This appliance exceeds the recommended weight for a one man lift as detailed in the Manual
Handling Operations, 1992 Regulations.
It should be noted that this appliance could contain sharp edges and care MUST be taken when handling.
12.1 FITTING THE APPLIANCE
12.1.1 Making sure the plenum is clear from all debris, lift the appliance into place.
12.1.2 Using a spirit level it is important the appliance is completely level, this appliance MUST NOT lean
or tilt in any direction. This will cause problems with the condense draining.
12.1.3 Seal the unit to the plenum, using ducting tape (not supplied). Ensure a good seal is made.
12.1.4 Fix all connections to the appliance ready for commissioning.