Transcript
Publication No. ZZ 1571 January 2015
PRESSURE SWITCH REPLACEMENT for Warmcair Upflow C16U, C26U, C36U & C46U Part No. 1000-0530125 FITTING INSTRUCTIONS 1.
CONTENTS ITEM
DESCRIPTION
QTY
1
Pressure Switch
1
2
MountingBracket
1
3
M4 x Screws
2
4
M4 x 20mm Screws
2
5
Spacers
2
6
Fitting Instructions
1
2.
PREPARATION
NOTE:
It is a statutory requirement that ALL work is carried out by a ‘competent person’ which in normal circumstances would be a GAS SAFE registered engineer.
2.1
Turn off the gas supply at the gas service cock, and switch OFF and disconnect the electrical supply to the appliance before you start the replacement.
2.2
You must have to hand the Installation, Servicing & Maintenance Instructions for this appliance. Or visit our website www.johnsonandstarley.co.uk to download the information.
2.3
To gain access to the WarmCair heater refer to section 16.3.
3.
FITTING INSTRUCTIONS
FOR REPLACEMENT OF THE AIR PRESSURE SWITCH 3.1
Disconnect the electrical wire connections.
3.2
Disconnect the two air pressure tubes.
3.3
Remove the 2 screws holding the electrical panel assembly to the casing.
3.4
Unclip the condensate trap. (Beware there could be water in this.)
3.5
Unclip the air pressure switch from the mounting bracket on the back of the electrical panel.
3.6
Replace with new. Re-fit in reverse order. NOTE: Make sure the air pressure tubes from the Air Circulation Fan and wires from the electrical connections are in the correct position. The high air pressure tube from the fan goes to P1 and the low air pressure tube to P2. See Figure 2.
AIR PRESSURE SWITCH P1 TO TOP OF ACF
P2 TO BOTTOM OF ACF
SCREW
ELECTRICAL CONNECTIONS FIGURE 11. AIR PRESSURE SWITCH
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ELECTRICAL PANEL ASSEMBLY
FOR REPLACEMENT OF AIR PRESSURE SWITCH. PART No 1000-0526490 3.7
Disconnect the electrical wire connections.
3.8
Disconnect the two air pressure tubes.
3.9
Remove the 2 screws holding the electrical panel assembly to the casing.
3.10
Unclip the condensate trap. (Beware there could be water in this.)
3.11
Unscrew the air pressure switch from the back of the electrical panel.
3.12
Use the two spacers and long screws to space off the mounting bracket from the electrical bracket. (This is to raise it clear from the mainc cable securing screws.) Screw the mounting bracket into where old air pressure switch sat. See Figure 4.
3.13
Clip the new switch onto the mounting bracket.
3.14
Re-fit in reverse order.
AIR CIRCULATION FAN
F2
TO P1 TO P2 GN
GN
AIR PRESSURE SWITCH
NOTE: Make sure the air pressure tubes from the Air Circulation Fan and wires from the electrical connections are in the correct position. The high air pressure tube from the fan goes to P1 and the low air pressure tube to P2. See Figure 2.
AIR PRESSURE SWITCH
X3-7
ESYS
FIGURE 2. SCHEMATIC FOR THE AIR PRESSURE SWITCH
SPACER
SCREW
OLD AIR PRESSURE SWITCH
SCREW FIGURE 3. OLD AIR PRESSURE SWITCH REMOVAL
MOUNTING BRACKET
SPACER
FIGURE 4. FITTING THE AIR PRESSURE SWITCH
4.
COMMISSIONING
4.1
Once the parts have been replace and refitted the heater will need to be commssioned. For this follow the section 14 in the Installation, Servicing & Maintenance Instructions.
Johnson and Starley prides itself on its ability to supply spare parts quickly and efficiently. If your service engineer indicates a problem in obtaining a spare part, advise him to contact Johnson and Starley Spares Department at the address below.
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H O T W AT E R
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Rhosili Road, Brackmills, Northampton NN4 7LZ Tel: 01604 762881 Fax: 01604 767408 www.johnsonandstarley.co.uk
