Camus Hydronics MICOFLAME GRANDE Series, Installation, Operation And Service Manual

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7
Appliances may be installed with either a
horizontal sidewall vent or vertical roof top
terminal. Terminals differ with each application.
The following applies to outdoor air installations:
1. Use only factory supplied air intake
terminal.
2. Periodically check to ensure that air
intake is not obstructed.
3. Refer to local codes for proper
installation and location of vent terminals.
Vertical vent terminal must be at least 3
feet above the highest point where it is
located above the roof of a building
4. Locate the air intake at least five feet
away from the vent discharge. For
sidewall venting locate the air intake
below the vent outlet if possible.
Model Air Intake
Hood Part # Description
2010 DOAI-12 12” Air Intake
Hood
2500 – 3000 DOAI-14 14” Air Intake
Hood
3500 - 4000 DOAI-16 16” Air Intake
Hood
6.5 FILTER KIT
A slot at the bottom of the rear panel is the
standard
air inlet configuration for the
MicoFlame® Grande. As an option, outside air
could be introduced directly through the back or
top panels. A filter kit is available. The filter is
washable and accounts for an additional pressure
loss of less than 0.05” W.C. Highly recommended
for dusty environments. The filter kit can also be
provided when using the outdoor air kit.
6.6 CONDENSER HEAT RECOVERY
MODULE (CHRM)
The MicoFlame® Grande All Stainless Steel
CHRM is mounted in a stainless steel inner jacket
chamber at the back of the appliance. The CHRM
is constructed from all stainless steel headers
and special multiple horizontal stainless tubes.
This CHRM is designed to maximize heat transfer
efficiency by fully condensing flue products and is
suitable to resist the low PH of condensate.
The CHRM must be supplied with adequate
water flow at all times during operation. Do not
operate the appliance with the CHRM piped out
or isolated.
The CHRM is mounted in the discharge of the
flue products from the primary heat exchanger.
This allows additional heat to be absorbed from
the
flue products exhausted from the
combustion process. If isolation valves are
provided on the CHRM, the provision of a relief
valve at the outlet of the CHRM is
recommended. This valve is to be sized at
minimum for 10% of the input of the appliance
and is to be piped to drain.
When cold water supply with temperatures less
than 110ºF (44ºC) passes through the CHRM it
will cool the flue products below dew points
resulting in the formation of condensation.
Furthermore, the volumetric flow rate of the flue
gases will be reduced.
The appliance CHRM loop may be used in
condensing mode for a variety of application
including domestic hot water and hydronic
space
heating. Recommended piping
arrangement is shown in Figure 3. Maximum
capacity through the CHRM is summarized in
Table 5; flows in excess of 60 GPM must be
bypassed.
Figure 4 – Secondary Heat Exchanger
Table 5 – CHRM Head Loss & Flow for 10
o
F
Rise
Model US GPM ΔP - Ft.
2000 40.0 5.5
2500 50.0 8.0
3000 60.0 11.5
3500 40.0* 8.5
4000 46.0* 11.0
*Flow for 15°F rise at high fire