Camus Hydronics ADVANTUS AVH 1000, Installation, Operation And Service Manual

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7.3 STAGING RELAY
The Advantus 800
– 4000 models feature a staging relay card which provides additional logic to open and close relays at factory set
pre-determined points based on a Vdc signal provided by the VFD. These relays provide a means to activate/deactivate at various
points in the boiler operation:
1) Low end and high end gas valves (R1)
2) Re-light hot surface igniter (R2 & R3)
3) Electronic air switch (R4)
To maintain longevity and reliable operation of the hot surface igniter (HSI) the HSI is only activated during the transition from one gas
valve to another through the use of R2 and R3 relays.
7.4 OUTER JACKET
The outer jacket assembly is constructed from mirror finish stainless steel. This ensures a long life for the jacket assembly, with full
integrity.
7.5 VENTING TRANSITION
All appliances are shipped with a female vent outlet pipe. Depending on the appliance category, an increaser will be required for the
proper vent configuration. Please refer to Table 3 dimensions and specifications.
7.6 CONDENSATION COLLECTION
Depending on water temperatures and firing rate there may be large volumes of condensate generated. At high fire with condensing inlet
water temperatures less than 130
o
F, condensate will be ejected from the vent outlet pipe and into the vent. It is recommended that
provisions be made for collection and disposal of condensate from the vent. At low fire with condensing inlet water temperature
condensate will be generated within the secondary pass of the heat exchanger and will fall into the bottom collection pan. This condensate
will be collected in the condensate box provided with the
Advantus . The condensate box provided with the Advantus has two connections.
One connection (flex metal) removes condensate from the bottom pan and the other connection (flexible plastic) removes condensate
from the vent outlet pipe.
Figure 37: Staging Relay