500mm
• From an electricity meter or fuse box (prohibited area extends to ground level).
1000mm
• Measured vertically, from an opening window, door, non-mechanical air inlet or any other opening into the
building (except sub floor ventilation).
• From a gas meter.
• From a mechanical air inlet, including a spa blower, measured both vertically and horizontally.
• A flue terminal of this type shall not be located under a roofed area, unless the roofed area is fully open on at
least two sides, and a free flow of air at the appliance is achieved.
4. SP4 Model Guidelines
4.1 Heater Dimensions
SP4 Universal
Diagram 11.
A
B
C
D
E
F
G
H
I
J
K
øSa
øRa
HEATER END PANEL
GAS INLET
FLUE INLET
LOOM MAINS
Dimension [mm]
A
B
C
D
E
F
G
H
I
J
K
øSa
øRa
SP415UN
625
845
397
14
467
197
447
197
235
95
495
300
300
SP421UN
625
845
397
14
467
197
447
197
235
95
495
300
300
SP430UN
644
923
549
14
487
197
487
237
235
250
515
350
350
SP435UN
644
923
549
14
487
197
487
237
235
250
515
400
400
Note:
SP4 Universal is approved for internal or external applications.
4.2 Internal Installation
Diagram 12.
Duct Connection Options
Preferred
Option
Preferred
Option
Preferred
Option
Preferred
Option
SP415UN & SP421UN
SP430UN & SP435UN
Plan view
Plan view
Preferred
Option
Preferred
Option
Preferred
Option
Preferred
Option
SP415UN & SP421UN
SP430UN & SP435UN
Plan view
Plan view
10
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