SMC Networks HRZ002-W1S-F, Operation Manual

Page: 113 / 196

HRX-OM-X010
Chapter 3 Transporting and Installation
HRZ Series 3.3 Procedure for Installation
3-15
3-15
3.3.6 Installation of circulating fluid and facility water piping

Pipe diameter
Table 3-3 Pipe Diameter
Pipe
Diameter Recommended torque
(Material: SS* vs SS)
Facility water inlet Rc1/2
28 to 30N
•
m
(20.7 to 22.1ft-lbf)
Facility water outlet Rc1/2
28 to 30N
•
m
(20.7 to 22.1ft-lbf)
Circulating fluid supply Rc3/4
28 to 30N
•
m
(20.7 to 22.1ft-lbf)
Circulating fluid return Rc3/4
28 to 30N
•
m
(20.7 to 22.1ft-lbf)
Main tank drain port Rc3/8 (with valve) Piping not necessary
Sub tank drain port Rc3/8 (with valve) Piping not necessary
Drain pan port Rc3/8 Piping not necessary
*: SS Stainless steel

Regarding the circulating fluid and facility water pipings, consider carefully the
suitability for operating pressure,temperature circulating fluid and facility water.
If
the operating performance is not sufficient, the pipings may burst
during
operation. Also, the use of corrosive materials such as aluminum or iron for fluid
contact parts, such as piping, may not only lead to clogging or leakage in the
circulating fluid and facility water circuits but also refrigerant leakage and other
unexpected problems.
provide protection against corrosion when you use the
product.

Always insulate external circulating piping. Potential insufficient cooling
performance due to heat absorption from the pipe surface and potential
insufficient heating performance caused by thermal radiation if disregarded.

When using fluorinated liquid as the circulating fluid, do not use pipe tape.
Liquid leakage may occur around the pipe tape. for sealant, we recommend that
you use the following sealant:SMC Part No., HRZ-S0003 (Silicone sealant)

Use clean pipes and pipe fittings, free of particles, oil and moisture. Apply air
blow to the parts before using. The presence of particles, oil or moisture in the
circulating fluid circuit causes insufficient cooling, system failure attributed to
moisture freeze when entering the system, or foaming of the circulating fluid in
the tank.

The total capacity of circulating fluid required by external piping should remain
under the capacity of the sub tank. Potential problem of tank overflow, when pump
stop, may occur if disregarded. See “Appendix 8.1.1 System specification” in
Chapter 8 for the capacity of the sub tank.

Be sure to choose a circulating fluid pipe capable of letting the fluid flow at rated
flow rate or better. See “Pump performance” defined in “Appendix 8.1.1 System
specification
” for the flow rate rating.

Have a drip pan available incase of a fluid leak.

Do not return the circulating fluid to the unit by installing a pump in the user
system.

Make sure of the locations of ports for the circulating fluid supply, return, facility
water inlet, outlet and their corresponding connections are correct.

Secure the piping connector section with a pipe wrench, and provide proper
tightening to the pipe. See Figure on page 3-13.

Do not give an impact when the piping connector section is fixed or tightened. It
may damage the piping or cause leakage.

The flow rate of the facility water is automatically adjusted depending on using
conditions. The facility water outlet temperature can be up to 60 deg.C