Camus Hydronics DFH/W500, Installation, Operation And Service Manual

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When supplied with the CHRM, the DynaFlame® is 95%
efficient (category II or IV appliance) which requires the use of
a special venting system fabricated from AL29-4C or
equivalent material. Only venting components listed by a
nationally recognized testing agency may be used.
This appliance may be installed with conventional, sidewall or
vertical venting. Conventional vented appliances operate with
negative pressure in the vent pipe and require a special vent
adapter to increase the flue outlet diameter. Sidewall and
vertically vented appliances operate with positive pressure in
the vent pipe and may be directly connected to the flue outlet
without the use of an increaser. Consult the vent pipe
manufacturer’s instructions for minimum clearances to
combustible material for vent components. In the absence of
instructions, the minimum clearance to combustible material is
six inches.
Consult vent pipe manufacturer’s instructions for proper
method of sealing vent pipe sections and fittings. In the
absence of instructions, make sure that pipe and fittings are
clean by swabbing with alcohol. Use Dow Corning 736 or 732
RTV, Polybar # 500 RTV or Sil-bond 4500 or 6500 to seal vent
pipe. Do not use other sealants or adhesives except as
expressly permitted by vent manufacturer’s instructions.
Consult vent pipe manufacturer’s instructions for vent system
assembly. Follow vent pipe manufacturer’s instructions if those
instructions differ from this section.
Conventional Venting
Multiple appliances may be vented into a conventional
chimney. The chimney must be lined with AL29-4C or
equivalent and a barometric damper is to be provided as
required for each appliance to control the draft.
A qualified professional using a proven vent-sizing program
with input of accurate operating parameters must properly
calculate sizing of the venting system. In applications where
flue gas temperatures are lower than can support a Category II
with conventional negative draft, it will be determined at the
venting design stage that a positive pressure will be developed
in the vent. It will then be necessary to either provide separate
vents as for Category IV, to pressurize the boiler room, or to
provide an extractor at the chimney outlet in order to maintain
a negative draft in the chimney and allow common venting.
The chimney must be protected from down drafts, rain and
debris by using a listed chimney cap. Approval of the
installation will be at the discretion of authorities having
jurisdiction.
Sidewall and Vertical Venting
The maximum vent length is 100 equivalent feet. Vent pipe
may be run through a vertical or horizontal chase provided that
minimum clearances to combustible materials are maintained.
The vent should terminate a minimum 12 inches above grade
plus normally expected snow accumulation, or 7 feet above
grade if located adjacent to public walkways. Do not install
over public walkway where local experience indicates
condensation or vapour from the boiler creates a nuisance or
hazard. Minimum 3 feet above any forced air inlet located
within 10 feet of vent termination. Minimum 4 feet below, 4 feet
horizontally or above any door window or gravity air inlet.
Minimum 4 feet horizontally from electric meters, gas meters,
regulators and relief valves. Use appropriately designed
thimbles when passing through combustible walls or roofs.
Install fire stops where vent passes through floors, ceilings or
framed walls. The fire stop must close the opening between
the vent pipe and the structure. Locate vent terminal above
combustion air intake terminal (if used) and no closer than
2 feet vertically or horizontally. Vertical venting requires
flashing and a storm collar to prevent moisture from
entering the structure. Vertical vent termination must be at
least 2 feet plus the expected snow accumulation above
the roof penetration height.
4.9 CHRM, FLOW and PRESSURE DROP
Figure 20: Secondary Heat Exchanger
Table 10: CHRM Head Loss & Flow for 10
o
F Rise
Model US GPM
∆
P - Ft.
500 10.0 0.4
750 13.0 0.7
1100 22.0 1.8
1200 24.0 2.1
1500 30.0 3.1
1750 35.0 4.2
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
4500 *52.0 14.0
5000 *57.0 16.5
4504 *52.0 14.0
5004 *57.0 16.5
6004 *68.0 25.0
*Flow for 15°F rise at high fire
4.10 WATER FLOW SWITCH (shipped loose)
A water flow switch is shipped loose on copper and copper
nickel heat exchangers and is to be installed in the outlet
piping on all heating boilers and hot water supply boilers
equipped with the copper heat exchanger. Stainless steel
heat exchanger DynaFlame’s are equipped with a flow
switch that is mounted and installed in the outlet boiler/ hot
water heater connection. The flow switch is mounted and
installed on the outlet piping of a stainless steel heat
exchanger DynaFlame®. The flow switch is wired in series
with the 24VAC safety control circuit. A diagnostic light will
be indicated on the control display on a low flow condition.