domestic selection guide
These recommendations are based on the guidelines in BS 6700.
Guidance should be sought for unusual applications. Eg: High flow - rate showers, large baths etc.
| Hot Water Demand |
Bedrooms |
Indirect |
Direct |
| 1 Bathroom or Shower |
Bedsit/1 Bed
2-3 Bed
3-4 Bed |
SI90
SI190
SI150 |
SD120
SD150
SD210 |
| 1 Bathroom with corner bath |
2-3 Bed
3-4 Bed |
SI150
SI150 |
SD180
SD210 |
| 2 Bathrooms or Bath and Ensuite |
2-3 Bed
3-4 Bed
4-5 Bed |
SI150
SI180
SI210 |
SD180
SD210
SD250 |
| Hot Water Demand |
Bedrooms |
Indirect |
Direct |
| 1 Standard Bath + 1 Corner Bath |
2-3 Bed
3-4 Bed
4-5 Bed |
SI210
SI250
SI300 |
SD300
SD300
SD300 |
| 3 Bathrooms |
3-4 Bed
4-5 Bed
5-6 Bed |
SI150
SI150 |
SD180
SD210 |
| Most showers fed from a Tribune will consume the same amount of hot water as a bath. |
Reheat Performance
Indirect
| Model |
Reheat Time |
Coil kW Rating |
| SI90 |
13 Minutes |
6.5 kW |
| SI120 |
17 Minutes |
16.5 kW |
| SI150 |
17 Minutes |
18.9 kW |
| SI180 |
21 Minutes |
18.9 kW |
| SI210 |
22 Minutes |
18.9 kW |
| SI250 |
28 Minutes |
21.4 kW |
| SI300 |
36 Minutes |
21.4 kW |
Direct
| Model |
Reheat Time
One Element |
Reheat Time
Two Elements |
| SD90 |
58 Minutes |
- |
| SD120 |
90 Minutes |
45 Minutes |
| SD150 |
121 Minutes |
61 Minutes |
| SD180 |
157 Minutes |
79 Minutes |
| SD210 |
192 Minutes |
96 Minutes |
| SD250 |
224 Minutes |
112 Minutes |
| SD300 |
263 Minutes |
132 Minutes |
The reheat performance is measured from 15°C to 60°C after drawing off 70% of the capacity. The coil kW rating is a guide
to the minimum size of boiler required to achieve the reheat times stated. Faster reheat times are achieveable using twin - coil
Tribunes. With both coils fed simultaneously, reheat times can be reduced to almost half. The boiler power required would double.
Specification
Inner Container
Duplex 2304 stainless steel to EN 10088.4362.
Primary Coil 22mm diameter 36L stainless steel.
Coil in coil design for improved performance. Entire cylinder
contents are heated on indirect models. The primar y system must
be fully pumped. The primar y circuit may be sealed
(max. 7 bar).
Outer Casing (optional) Zintec corrosion proofed steel
with durable oven - hardened white paint finish.
Thermal Insulation Fire retardant polyurethane foam.
The foam is CFC free, HCFC free and has an Ozone depletion
potential of zero. Nominal thickness 50mm
Immersion Heater Supplied on all units. 1.75" BSP
parallel threaded head. Long life incoloy sheathed low noise
element 14" long. Long life incoloy sheathed thermostat pocket
11" long. Brazed construction. 11" combined thermostat and
safety cut - out. Element rating 3Kw at 240V A/C.
Installation
Fixing
The units must be fitted vertically.
Water Supply The unit must be used on an open vented
system (ie. fed from a cold water tank and fitted with a vent
pipe). The maximum working head is 40m.
Plumbing Connections Inlet / outlet - 22mm
compression. Indirect coils - 22mm compression.
Thermostat / Shower tapping - 1/2"F.
*NOTE Use D2R / Gunmetal compression fittings to make
connections onto the 22mm stub pipes.
Do not use push - fit connectors.
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