Nortec EL005 Installation Manual page 72

Site Water Supply, continued...
Note: For units with dual steam cylinders, check water supply to
each fill valve.
Water supply pressure meets require-
ment:
(Permissible range – 30-80 psig (207-550 kPa)
Select checkbox, or enter measurement, as appropri-
ate).
Water supply pipe sized correctly:
(Minimum 1/2 in (13 mm) diameter required).
Water supply temperature meets require-
ment:
(Permissible range – 34-104 °F (1-40 °C)
Select checkbox, or enter measurement, as appropri-
ate).
Water supply piping material:
(Copper, stainless steel or plastic certified for drinking
water systems permitted).
Filter installed close to humidifier:
(5 μm – optional, but recommended)
Shutoff valve and union fitting installed:
No pressure surges:
(Surge protection device must be installed, if neces-
sary).
All debris flushed from supply line:
No leakages in supply line:
Drainage
Humidifier drain pipe diameter meets
requirement:
(Minimum 7/8 in (22 mm) diameter required).
Humidifier drain piping material meets
requirement:
(Must handle temperatures to 212 °F (100 °C)).
Drain pipe sloped adequately:
(Minimum downslope of 1 in/48 in (1.2°) to air gap
funnel).
Air gap funnel size meets requirement:
(Minimum 2-1/2 in (64 mm) diameter required).
Drain pipe does not touch sides or bot-
tom of air gap funnel:
Air gap funnel location does not permit
any rising steam to enter control cabinet:
Separate air gap funnels (for large units
with dual cylinders), and combined drain
size meets requirement:
(Drain lines from large units must empty into separate
open air gap funnels before connecting to the drain.
Combined drain line minimum 1.5 in (38 mm) ID).
Drainage rate if building drain meets
requirement:
(Minimum 2.3 gal/min (8.7 L/min) per steam cylinder
required).
Building drain piping material meets
requirement:
(Only copper or stainless steel permitted).
Appendix-B
iv
Humidifier Mounting
Figure 6 on page 17
Refer to
Non-combustible mounting surface?
(Withstand temperatures 140-158 °F (60-70 °C))
Unit level?
Front clearance:
Left side clearance:
Right side clearance:
Ground clearance:
Overhead clearance:
Steam Line(s)
Note: For units with dual steam cylinders, check steam line con-
nected to each cylinder.
Steam line diameter meets requirement:
(Refer to Table 6 on page 28
Steam line piping material meets require-
ment:
(Copper (MED Type-L) or stainless steel (minimum DIN
1.4301) required).
Type of insulation:
Slope of steam line meets requirement:
(Minimum constant upslope of 2 in/12 in (10°), or mini-
mum constant downslope of 1/2 in/12 in (2°) required).
Steam line rises straight up minimum
12 in (300 mm) before first bend:
Steam lines do not reduce in diameter or
merge, except at steam distributor:
No restrictions/kinks in steam line:
Steam line fully supported, with no sags:
All debris flushed from steam line:
Backpressure meets requirement:
(Maximum permissible static pressure and backpres-
sure in steam line – 5.5 in H2O (1.37 kPa); or 10 in H2O
(2.49 kPa) with the optional fill cup extension)
Duct static pressure:
(Enter static pressure (if available), and if
positive or negative pressure).
2582302_C_EN_1611
for clearances.
for steam line diameter).
Nortec EL