Camus Hydronics DFH500, Инструкция по установке, эксплуатации и обслуживанию

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4.7 INSTANTANEOUS WATER HEATER (non-
condensing)
An instantaneous water heater is designed to deliver hot
water without the use of a storage tank. It is suitable for
applications with variable load such as restaurants,
condominiums, apartments and motels and typically used in
conjunction with tempering valves to achieve temperature
control. (See figure 10)
Figure – 10 Typical Instantaneous Water Heating
System
Table 10 – Flow and Pressure Drop at a Given
Temperature Rise
30 °F (19.4 °C)
Temp Rise
35 °F (19.4 °C)
Temp Rise
Model
Heat
Exchanger
Water
Content
(USG)
USGPM
(min.
flow)
Δ
P
Ft.
USGPM.
(min.
flow)
Δ
P
Ft.
500 2.5 28.0 0.7 24.0 0.5
DF750 2.9 42.0 1.4 36.0 1.0
DF1100 3.5 61.6 2.7 52.8 2.1
DF1200 3.5 68.0 2.9 58.3 2.2
DF1500 6.3 83.9 4.5 71.9 4.0
DF1750 6.6 90.0 6.7 83.9 5.5
DF2000 7.0 111.9 4.1 95.9 3.1
DF2500 7.5 139.9 6.1 119.9 4.6
DF3000 8.0 167.9 8.4 143.9 7.0
DF3500 8.4 198.1 12.7 169.8 9.5
DF4000 8.9 226.9 17.0 194.5 12.7
DF4500 9.3 254.7 21.9 218.3 16.4
DF5000 9.7 282.9 27.6 242.5 20.7
4.8 CONDENSER HEAT RECOVERY MODULE
(CHRM)
The DynaFlame ALL Stainless Steel CHRM is mounted in a
stainless steel inner jacket chamber at the right side of the
appliance facing 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 110 ºF
(44 ºC) 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 11 Maximum capacity
through the CHRM is summarized in table 11; flows in
excess of 60 GPM must be bypassed.
Figure 11 Typical Condensing System
Condensate from the Dynaflame must be treated before
being discharged to drain. PH level of the condensate is to
be checked regularly and the neutralizing medium is to be
replaced as required. A neutralizing cartridge is available
from the factory. The condensing Dynaflame must be
vented using only special venting type AL29-4C stainless
steel or equivalent, please follow instructions detailed
below.
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.