Page 48
WARNING
When replacing a combination thermostat ensure that the low voltage link, marked on the
thermostat, ‘Remove for Low Voltage’ is removed. See Fig. 2.2.
Permanent damage will be caused by leaving this link in.
Disconnect the overload fixing and connecting screws at the bottom of the contactor.
Ensure that any replacement overload is of the correct rating and that it is reset as in 2.8
‘A’ - The contactor is fixed by two diagonally opposite screws.
To remove: First remove the overloads as above, then remove the line connections to the top of the
contactor (noting the colour code) and the two coil connections at the top rear of the contactor.
Unscrew the fixing screws to remove the contactor from the panel.
To refit: reverse the above operations. Check rotation of fan following work on the contactor.
7.7
Combination Fan/Limit Thermostat
7.7.1
To gain access to this thermostat, remove the cover retaining screw and pull of the cover.
7.7.2
Disconnect the electrical connections by pushing in with a small screwdriver and pulling out the wires.
(see Fig. 2.2).
The earth wire is held under a screw connection.
7.7.3
Unscrew two fixing screws and withdraw the unit from the cabinet feeding the cables through the
plastic conduit connection.
7.7.4
To refit, reverse the above procedure reusing the plastic conduit connection and reset as in the
commissioning instructions, Section 4.
Note: the new thermostat should have the limit setting sealed by a suitable method to prevent
unauthorised adjustment.
Summary of Contents for Dualair DA260G Series
Page 2: ...Details of condense drain for cooling coil ...
Page 9: ...Page 7 Fig 2 2 DualAir 380 Module Dimensions FRONT VIEW REAR VIEW SIDE VIEW ...
Page 34: ...Page 32 Fig 5 2 Wiring for DualAir Units On Off Burner 24v Controls ...
Page 35: ...Page 33 Fig 5 3 Wiring for DualAir Units Hi Low Burner 230v Controls ...
Page 36: ...Page 34 Fig 5 4 Wiring for DualAir Units Hi Low Burner 24v Controls ...
Page 37: ...Page 35 Fig 5 6 Wiring for DualAir Units BMS Burner Modulation 230v Controls ...
Page 38: ...Page 36 Fig 5 7 Wiring for DualAir Units BMS Burner Modulation 24v Controls ...
Page 39: ...Page 37 Fig 5 7 Wiring for DualAir Units Full Burner Modulation 230v Controls ...
Page 40: ...Page 38 Fig 5 8 Wiring for DualAir Units Full Burner Modulation 24v Controls ...
Page 41: ......
Page 42: ......
Page 43: ......
Page 44: ......
Page 45: ......
Page 46: ......
Page 47: ......
Page 48: ......
Page 49: ......
Page 50: ......