Steam lines and condensate return instructions – Nortec RH2+ User Manual
Page 15
Installation | 12
Steam Lines and Condensate Return Instructions
The following instructions must be followed for installation of steam lines for the RH2 Duct.
Failure to use recommended material and exceeding maximum recommended length in Table
4, or failure to follow any other steam line installation instructions will result in improper
operation and could void the warranty.
Table 4: Recommended Steam Line Material for RH2 Duct
Voltage
Steam Output
Material*
Maximum
Steam Line
Length
Possible Losses
lbs/hr (kg/hr)
Nortec Steam
Hose
MED-L
Copper
Tube
Stainless
Steel
Tube
ft
(m)
lbs/hr
(kg/hr)
110-
120V
5
(2.3)
Part Number
1328810
(7/8”)
3/4”
0.875 X
0.049W
7
(2)
0.5
(0.2)
208V
8.7
(3.3)
10
(3)
1
(0.5)
220-
240V
10
(4.6)
12
(3.5)
1.5
(0.7)
Oversized Steam Line (used for longer steam runs)**
110-
120V
Not
Recommended
Not
Recommended
1”
1.125 X
0.049W
Not Recommended
208V
8.7
(3.3)
12
(3.5)
2
(0.9)
220-
240V
10
(4.6)
24
(7)
3
(1.4)
Note: * The use of steam line other than copper, stainless steel tube or Nortec supplied steam line will void the warranty and may adversely
affect the operation of the humidifier.
** These diameters require a reducer at humidifier and steam distributor connection. Use Nortec part number 1115444 at
humidifier to prevent backpressure caused by condensation collecting at the reduction.
To return condensate for RH2+, insert copper tube (supplied with equipment) half way into the
condensate opening of the fill cup along with the spring clamp (supplied with equipment).
Insert the condensate hose into the condensate return hole at the top of the RH unit, and over
the copper tube. Fasten in place with the spring clamp.
Figure 9: Condensate Return