Condensing Pool Heater Genie S
Conversion to LPG
The Heater can be converted on site. NG to Propane,
or Propane to Butane.
1. With the gas and electrical supply off , undo the
three screws that hold the venturi to the gas
valve. (See Fig.6.0)
2. Allow the gas valve to drop away from the venturi.
3. Fit the conversion orifi ce into the rubber seal that
sits in the gas valve. (See Fig.6.1)
4. Re-assemble the gas valve and venturi.
5. Affi x the new LPG serial number data label sup-
plied over the existing.
6. Turn gas on and check for leaks.
7. If converting an MB50S initially turn the throttle
adjustment screw four turns anti-clockwise
8. Operate heater and if necessary turn the throttle
screw anit-clockwise another turn until ignition is
achieved.
9. Allow fi ve minutes for the heater to warm up be-
fore checking and adjusting the CO2. Adjust using
the throttle screw to the values on the data plate.
10. Replace the dust cover over the throttle, when
adjustment is complete.
LPG to NG Conversion
The method is as detailed above except the steps are
reversed (if converting an MB50S remember to ini-
tially turn the throttle screw fi ve turns clockwise before
operating the heater).
The orifi ce is removed and the venturi and gas valve
reassembled with just the rubber seal between them.
A new serial number data plate should be obtained
from the manufacturer and affi xed over the existing.
Gas Connection
The 22mm copper gas connection provided can be
positioned to exit the Heater from either the left or the
right. A minimum of 20mb. (NG), 37mb (propane) 28
mbar (butane) must be available at the Heater inlet,
with the Heater and other connected appliances fi ring.
NB: If the gas valve test point is used there is a
2-2.5 mbar drop for the Genie 50 at full rate.
Check for gas tightness (B.S. 6891: 1988) in pipe-
work to boiler using a manometer.(See Fig. 6.2) Gas
and combustion soundness within the Heater should
be checked using sense of smell and leak detection
fl uid. Check the maximum rate and combustion are to
specifi cation.
See Table 6.0 and Data table Inside Cover.
Rating Table (38.8Mj/m
3
)
13
kW
gross
Btu/h sec/ft
3
m
3
/2 mins
7.5 25,590 145 0.023
12.5 42,650 87 0.039
20 68,240 55 0.062
34.6 108,055 31.5 0.107
52 177,420 21 0.161
Table 6.0
Inlet pressure
tapping
Off set
connection
Fig. 6.0
Fig. 6.2
Throttle
Adjustment
Fig. 6.1
Orifi ce in position
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