Supplied By www.heating spares.co Tel. 0161 620 6677
Page 20
4.2 ELECTRICAL WIRING
The standard models are supplied with factory fitted single channel heating and hot
water programmer. Therefore only a room thermostat is required to be supplied and
wired to the appliannce.
However, other system controls e.g. 2-channel remote programmer, programmable
room thermostat can be connected to the appliance and for this, the appliance model
with no clock option should be ordered.
4.2.1 General
(a) WARNING: This appliance MUST BE
EARTHED.
(b) The wiring must comply with the current
I.E.E Requirements for Electrical Installations
(BS 7671) and the requirements of the local
electricity utilities.
(c) It is the responsibility of the competent
electrical installer to use the details in this
manual with the latest British Standards.
(d) The appliance has integral 9kW electric
backup boiler and therefore the supply
must be 230V~, 50Hz rated at 45A as
discussed below in table 4.4.
(e) All electrical wiring to the appliance should
be secured to prevent the wires/cables
touching any hot surfaces inside and
outside the appliance case.
(f) The appliance is supplied with 2m long,
10mm
2
(twin + E) flexible cable and it must
be connected to a local (not more than 2m
away from the appliance) 45A double pole
isolator having a contact separation of at
least 3mm in both poles as shown in figure
4.5.
4.2.2 Connecting Power Supply to the
Appliance
(a) Ensure that the electricity supply is switched
off.
(b) The appliance is supplied with 2m long
10mm
2
(twin + E) flex. Uncoil this and
connect it to the local fixed isolator (figures
1.1. 1.2 and 4.5).
(c) DO NOT SWITCH ON the electricity supply
to the appliance at this stage.
Figure 4.4A Appliance wiring panel with factory fitted Programmer
Table 4.4 Wiring specification and general guide for all models
Rating @ 230V~ 50Hz
Note: All models are fitted with 9kW electric
backup boiler
9.0kW, 41.3A
Power consumption when gas boiler is
operating @ 230V~ 50Hz
Model 12: 205W, 0.9A
Model 20: 216W, 1.0A
Model 30: 248W 1.1A
Minimum rating of isolating switch
45A @ 250V ~ 50Hz
Maximum cable run based on a 9.2 volt
drop & earth fault loop impedance for 0.4s
disconnection time, when using type B
protection device to BS EN 60898
10mm2 cable: 45m
9.3kW appliance - Recommended circuit
protection device (CPD) to ensure 0.4s
disconnection time under fault conditions
* Provides best protection
45A type 1 mcb to BS 3871
45A type B circuit breaker to BS EN 60898*
50A type 1 mcb to BS 3871
50A type B circuit breaker to BS EN 60898
4.2.3 Room Thermostat (Standard Models)
The standard GulfStream models are
supplied with factory fitted and wired single
channel programmer for controlling the
hot water and space heating on-off time
periods. This appliance is only suitable for
connecting 230V, 50Hz i.e. mains voltage
room thermostats.
(a) Remove link L1 from terminals labelled ‘L-R’
and ‘SL-h2’ (see figures 4.4A).
(b) Wire the room thermostat to the appliance
terminals as shown in figure 4.6
INSTALLATION AND WIRING
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