Sanyo DE operation manual Location and space requirements, Water piping, Field piping instruction

ENVIRONMENTALLY FRIENDLY TECHNOLOGY

	200
	53 52 51
	42
	41
32
	31
24	100
23	90
	80
	70
	60

	SUPER ABSORPTION
Installation and application data
Location and space requirements
The unit is designed for indoor application and must be located in a space	provided on either end to facilitate tube cleaning, or removal and clear-
where the surrounding temperature of equipment is between 5° C and	ance on all other sides of the unit for general unit maintenance. See the
45° C, and at no more than 90% relative humidity. Clearance must be	dimensional data tables for clearance requirements.
Water piping
Water piping should be arranged so that the circulating pumps discharge	and noise transmission, vibration absorbers should be provided. Shutoff
directly into the vessels. The water piping should be insulated to reduce	valves should be provided to allow unit isolation during maintenance.
heat gain and to prevent condensation. Air vents should be located at all	Chilled water flow switch is provided on the unit and is preset to open at
high points in the water piping system, and drains should be located at all	approximately 50% of specified flow rate.
low points to facilitate complete system drainage. To reduce vibration

22	50
	21
	40
14	12
13	11
	30
	/h)
	3
	(m

Field piping instruction

1.In order to prevent freeze-up of chilled water during unit shutdown, the chilled water pump(s) and air handler must be run for 15 minutes after the burner is shut off. This will allow time for the automatic dilu- tion cycle to be completed.

2.The standard unit must not be subjected to water pressures in excess of 981 kPa (10 kg/cm2G).

3.An expansion tank should be provided in the chilled/hot water line.

4.Thermometers and pressure gauges should be field-installed at the inlet and outlet of the chilled/hot water line, and the cooling water

line.

5.During heating operation, the cooling water circuit should not be in operation and should be blown down.

6.All external piping connections are provided with JIS 10K flanges un- less noted.

7.A drain line must be installed from the smoke chamber drain to a floor drain.

8.See Figure 32 (DE), Figure 48 (NE), Figure 61 (LE) for typical sys- tem piping arrangement.

03 20 Flowrate

(LE)					02				10
dropcurve					01				8 9
pressure									6 7
water									5
Hot
									4
Graph17.									3
100	90	80	70	60	50	40	30	20	10
						(kPa) drop Pressure

Leveling requirements

Strict leveling tolerances must be adhered to for trouble-free operation.	difference in the water level at the two points. The tolerance that must be
SANYO units are furnished with four leveling reference points, one on	maintained from end-to-end and side-to side is 1mm (1/25'') of difference
each corner of the lower shell or tube sheet. Each reference point is	for each 1m length between points. It is not necessary to check levels
designated by three punch marks. A convenient method to check level-	diagonally. When the unit does not meet this requirement, the unit must
ing tolerances is to fill a clear vinyl hose with water and measure the	be shimmed in order to meet leveling tolerances.
Figure 62. Leveling the chiller

B

D

Evaporator side

A

Absorber side

C

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