29
Q7: What prevents liquid from passing downstream?
A7:
The vapor temperature at the exit of the vaporizer, in combination with the LPG
pressure exerts a specific force against a preset spring and ball assembly. As the temperature
drops the resulting decrease in force on the spring causes the ball to modulate closed against
the valve seat. The temperature and pressure curves are matched based on your specific
Butane/Propane content.
Q8: Can liquid pass downstream when the electricity fails?
A8:
No. Because the inlet control valve does not require electricity to operate, it is fail-safe.
The valve operates as stated in A7 to ensure that no liquid passes downstream.
Q9: Because there are no switches, what prevents the heaters from overheating?
A9:
The
ZIMMER
heaters are not traditional filament-type resistance heaters. Instead, the
heaters are made from a special ceramic-like silicon material that cannot exceed a certain
temperature. If the heaters are subjected to a higher temperature during use the molecular
structure will degrade into an infinite resistance form yielding no heat output.
Q10: Can I leave my ZIMMER
on overnight while it is not in use?
A10:
Yes. Your
ZIMMER
is designed for continuous use. Additionally, the
ZIMMER
consumes
very little energy while not in use (e.g. approximately 300 - 600 watts in 1 PH operation for 50
kg/hr model).
Q11: If the power goes out for a brief period of time, will it shut down the gas supply to
my burners or pilots?
A11:
Generally, no. For short power outages the
ZIMMER
will continue operating – even
without power. Although no additional heat will be added, the heat exchanger’s aluminum
body generally will have enough reserve energy to sustain a short power outage. When the
power comes back on, the heatsink will be replenished. Since the inlet control valve does not
require electricity for operation, its function is independent of the power supply.
Q12: Does the ZIMMER
have to be horizontally mounted on a wall?
A12:
Horizontal mounting is the preferred mounting, but vertical mounting is possible. If
mounting vertically, local codes may require an elbow to be mounted between the ZIMMER
and pressure relief valve to direct released LPG upward instead of outward or you may swap
the inlet adapter with the relief valve to ensure relief valve points upward. If mounting vertically,
always ensure the inlet and outlet are at the top.
Q13: What is the recommended first-stage regulator?
A13:
Regulator must be sized adequately for flow and must have high temperature
Fluorocarbon elastomer seat (Viton). If unable to acquire high temperature regulator in your
area,
Algas-SDI
stocks a 5-20 psig (0.14 – 1.4 bar) high temperature regulator.
Q14:
Can the ZIMMER be used in an economy configuration like the XP vaporizers?
A14:
With Propane models, but at present
an economy kit is not offered for the
ZIMMER
.
Q15: What is the minimum temperature rating for the ZIMMER?
A15:
The UL/CE approval is valid for -4ºF (-20 ºC).
Q16: Is the capacity de-rated at certain ambient conditions?
A16:
In general, no. In fact, the
ZIMMER
vaporizes more at lower temperatures. At extreme
low temperatures and at extreme high temperatures, the 100 and 150 kg/hr capacities are de-
rated somewhat. Contact factory for application related questions.
Summary of Contents for ZIMMER
Page 2: ......
Page 20: ...19 Wire Length Chart 4 AWG 21 1 mm2 Wire Length Chart 6 AWG 13 3 mm2...
Page 21: ...20 Wire Length Chart 8 AWG 8 36 mm2 Wire Length Chart 10 AWG 5 26 mm2...
Page 45: ......
Page 46: ......
Page 47: ...32...
