Danfoss B3-012 Series User Manual Download

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DKQB.PI.320.A2.2X-520H8023

Condensers

Evaporators

Condensers

Evaporators

Condensers

Evaporators

Condensers

Evaporators

Condenser

Evaporator

Dual Circuit

Evaporator

Insulation

Dual Circuit

Condenser

GB INSTRUCTIONS

General information

Brazed Plate Heat Exchangers (BPHEs) and Micro Plate Heat Exchangers (MPHEs) are available

with different functions, pressure ratings and combinations of materials. The standard materials are stainless steel
vacuum-brazed with pure copper or a nickel-based filler.
The fluids that can be used with Danfoss BPHEs/MPHEs depend on the materials used in the heat exchangers. Typical
fluids include oils (synthetic or mineral), organic solvents, water (not seawater), brines (ethanol, ethylene glycol, pro-
pylene glycol or similar) and refrigerants. Note that if ammonia is used the BPHE/MPHE must be brazed with a nickel-
based filler.
Store dry at 17-50 °C. The performance of Danfoss BPHEs/MPHEs is based on their installation, maintenance and
operating conditions being in accordance with the manual. Danfoss cannot assume any liability for BPHEs/MPHEs
that do not meet these criteria. Mount BPHEs/MPHEs vertically (see figs. left).

Condensers

– Connect the refrigerant (gas) to the upper left connection, Q4 (Dual circuit: upper left, Q4, and right, Q6),

and the condensate to the lower left connection, Q3 (Dual circuit: lower left, Q3, and lower right, Q5). Connect the wa-
ter/brine circuit inlet to the lower right connection, Q2, and the outlet to the upper right connection, Q1 (Dual circuit: in-
let lower middle, Q2, and outlet upper middle, Q1).

Evaporators

– Connect the refrigerant (liquid) to the lower left connection Q3 (Dual circuit: lower left Q3 and lower right

Q5) and the refrigerant (gas) outlet to the upper left connection Q4 (Dual circuit: upper left Q4 and upper right Q6).
Connect the water/brine circuit inlet to the upper right connection, Q1, and the outlet to the lower right connection, Q2
(Dual circuit: inlet upper middle, Q1, and outlet lower middle, Q2).

Strainer

– If any of the media contain particles of 1 mm or larger, we recommend that a strainer (16-20 mesh) be in-

stalled before the BPHE/MPHE.

SAFETY NOTES

To avoid injury to persons and damage to the device, it is mandatory to read and observe these in-

structions carefully. Necessary assembly, start-up and maintenance work must be performed only by qualified and
authorized personnel.

Warning:

high pressure and temperature

The working temperature range:

Ts min. -196 °C. Ts max. 200 °C

The maximum operating pressure of the BPHE/MPHE PS:

See information on product label.

The test pressure of the BPHE/MPHE TP:

See information on product label.

Volume V:

See information on product label.

This equipment must not be used outside these limits. Protection against exceeding the allowable limits, safety ac-
cessories, pressure limiting devices and temperature monitoring devices are not provided by Danfoss. The provi-
sion and calculation of this equipment is the responsibility of the user.

Warning: hot/cold surfaces

The BPHE/MPHE may have hot or cold surfaces depending on the application where it

is used. This may cause skin burns. The customer must provide and maintain facilities for dealing with accidental
skin burns at the installation before it becomes operative.

Warning: hot water

District heating water may be very hot and under high pressure. Water must therefore be drained

from the station before demounting.

Warning: damage during transportation

Before the BPHE/MPHE is taken into use, ensure that it has not been damaged during transportation.

Water quality

To avoid corrosion and leakage in copper-brazed units, observe Danfoss’ recommendations for water

quality in the guidelines at www.danfoss.com.

Delivery

BPHEs/MPHEs may be delivered in any orientation. However, the recommended orientation is lying on the

end plate. If delivered in bulk, they must be protected by inserting suitable material between them.
BPHEs/MPHEs must not be transported or stored resting on their pipe connections.

Warning: Sharp edges

BPHEs/MPHEs may have sharp edges.

Mounting

Never expose the unit to pulsations or excessive cyclic pressure or temperature changes. It is also important

that no vibrations be transferred to the BPHE/MPHE. If there is a risk of this, install vibration absorbers. For large connection
diameters, it is advisable to use an expanding device in the pipeline. A buffer between the BPHE/MPHE and the mounting
clamp (e.g. a rubber mounting strip) is also recommended.

Start-up and shut-off

When the BPHE/MPHE is started up/shut off, the pressure must be increased/decreased slow-

ly to avoid stress damage to the unit.

Additional load:

This equipment has not been designed to withstand earthquakes, wind or force from mounting ac-

cessories. It is the responsibility of the user to protect the unit and reduce the risk of damage. Neither is the equip-
ment designed to withstand, or protected against, fire. It is the responsibility of the user to protect the equipment.

Design conditions and approvals

The maximum working pressure (PS) and maximum/minimum working temper-

atures (TS) for BPHEs/MPHEs are specified on the product label. BPHEs/MPHEs have approvals in accordance with:

• Europe: Pressure Equipment Directive (PED) Module A1

• USA: Underwriters Laboratories (UL)

Danfoss heat exchangers are designed for use with fluids in accordance with PED fluid groups I and II. If you have
any questions about design conditions and approvals, please contact Danfoss.

Insulation

It is recommended that the product be insulated during operation. Use expanded cellular rubber insula-

tion to create a vapour barrier and prevent heat losses.