Zehnder Rittling RW Series, Installation, Operation And Maintenance Manual, Page: 6 / 34

Standard ratings and specifications
Table A
Specifications 02 03 04 06 08 10 12
Steam capacity
MBH 18.7 25.5 34.8 51.0 62.8 73.4 90.7
EDR 76 104 144 212 260 304 376
Hot water capacity
(1 row coil)
MBH 16.2 22.4 30.7 45.5 54.8 64.5 80.1
GPM 1.7 2.3 3.2 4.8 5.7 6.7 8.4
WPD 0.2 0.4 0.8 2.2 0.5 0.7 1.2
Hot water capacity
(2 row coil)
MBH 25.0 34.3 47.2 69.5 86.6 101.2 125.8
GPM 2.6 3.6 4.9 7.3 9.0 10.5 13.1
WPD 0.8 1.7 3.6 9.3 2.2 3.3 5.6
CFM: standard
High 220 300 420 620 810 940 1180
Medium 150 200 310 450 600 720 875
Low 125 140 220 350 440 480 660
CFM: high static
(@ 0.2" ESP)
High 250 345 490 640 920 1020 1150
Medium 210 290 425 550 780 870 980
Low 160 230 320 420 590 660 750
Coil
FPI 12 12 12 12 12 12 12
Face area, ft2 1.25 1.67 2.08 2.92 3.33 3.89 4.58
Coil connections 1/2" Cu 1/2" Cu 1/2" Cu 1/2" Cu 1/2" Cu 1/2" Cu 1/2" Cu
Blower
Quantity 1 1 2 2 1, 2 4 4
Diameter 5.7" 5.7" 5.7" 5.7" 5.7" 5.7" 5.7"
Width 7.5" 10.4" 7.5" 10.4" 7.5", 10.4" 7.5" 10.4"
Filter
Number 1 1 1 1 1 1 1
Length, in. 22 28 34 46 52 60 70
Width, in. - standard 9.75 9.75 9.75 9.75 9.75 9.75 9.75
Width, in. - floor with inlet grille 7.25 7.25 7.25 7.25 7.25 7.25 7.25
Rating Merv 4 Merv 4 Merv 4 Merv 4 Merv 4 Merv 4 Merv 4
Thickness, in. 1 1 1 1 1 1 1
Cabinet size
Length, in. 38.2 44.2 50.2 62.2 68.2 76.2 86.2
Width, in. 10 10 10 10 10 10 10
Height, in. - wall/ceiling 24 24 24 24 24 24 24
Height, in. - flat top floor 26.5 26.5 26.5 26.5 26.5 26.5 26.5
Height, in. - slope top floor 29.25 29.25 29.25 29.25 29.25 29.25 29.25
Shipping weight, lbs. 85 100 115 140 155 170 195
Notes
„
Airflows for floor mounted units with 1-row coil. Please check with factory
for adjusted outputs on other models
„
Heating capacity based on inlet air 60 ˚F DB, 200˚F entering water or 2 psig
steam, 180˚F leaving water, standard motor at high fan speed
„
Pressure drop (PD) shown in feet of water
„ Overall length for fully and partially recessed units is 3", adding
in the trim kit. Wall rough-in hole dimension to be 1/2" by 24-1/2"
minimum. Maximum opening to be length by +2" by 26".
STANDARD RATINGS
4