4Kw Kit: ‘L’ Units: Relay Wiring - Marstair CC 875 Technical Manual

4kW KIT: 'L' UNITS: RELAY WIRING
1. Remove the orange wire from the kit relay and discard.
2. Join the piggy-back end of the short orange kit wire to the brown wire (4kW brown + orange) already connected
to the pcba relay.
3. Connect the other end to the kit relay terminal A1 (or a).
4. Connect the blue wire in the kit to terminal N2 on the pcba.
5. Connect the other end of the blue wire to relay A2 (or b).
6. Tidy the wires with the cable ties provided.
RE-ASSEMBLY
1. Refit the chassis, fan cowl, internal electrics tray, return air sensor and receiver pcba.
2. ENSURE ALL FOAM BLANKING PIECES HAVE BEEN REMOVED FROM THE AIR-OFF SLOTS.
3. Reconnect the drain stub pipe(gravity drain units only)and drain hose.
4. Refit the fascia.
4kW KIT: 'E' UNITS: RELAY WIRING
1. Remove the brown wire from the pcba relay: fit the orange wire from the kit relay (with the double spade terminal)
in its place.
2. Reconnect the brown wire to the double spade terminal.Locate the loose black, blue and brown wires on the
internal electrics tray with the black insulating boots and connect to the kit relay as:- Black to No.11
3.
(The loose orange and blue wires provided in the kit are not required for E units).
4. Tidy the wires with the cable ties provided.
RE-ASSEMBLY
1. Refit the chassis, fan cowl, internal electrics tray, return air sensor
and receiver pcba.
2. ENSURE ALL FOAM BLANKING PIECES HAVE BEEN
REMOVED FROM THE AIR-OFF SLOTS.
3. Fit the two 400V warning labels (Fig. 6).
4. Reconnect the drain stub pipe(gravity drain units only)and drain hose.
5. Refit the fascia.
Tel: 01823 665660
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No.14 Blue to A2 (or b)
Brown to
Fig. 6
Fax: 01823 665807