15
I-UBX-UBZ-UDX-UDZ (03-21) 1034344-0
Table 12. Technical Data for UDX and UDZ Models (Unit Sizes 150–400)
Parameter
Unit of
Measurement
Unit Size
150 175 200 225 250 300 350 400
Input heating capacity
BTUh 150,000 175,000 200,000 225,000 250,000 300,000 350,000 400,000
kW 44.0 51.3 58.6 65.9 73.3 87.9 102.6 117.2
Thermal efficiency % 83 83 83 83
Output heating capacity
1
BTUh 124,500 145,250 166,000 186,750 207,500 249,000 290,500 332,000
kW 36.5 42.6 48.7 54.7 60.8 73.0 85.1 97.3
Gas connection, natural
2
Inches
1/2 1/2 3/4 3/4 3/4
Gas connection, propane
2
1/2 1/2 3/4 3/4 3/4
Vent connection diameter
3
5 5 5 6 6
Combustion air inlet diameter
(UDZ models)
3
6 6 6 6
Control amps, 24V
Amps
1.0 1.0 1.0 1.0
Full Load Amps (FLA), 115V 3.8 4.6 7.5 7.5 11.0 11.0
Maximum overcurrent protection
(115V)
4
15 15 15 20 20
Normal power consumption Watts 392 491 747 747 1086 1086
Discharge air temperature rise °F 60 60 60 60
Air volume
cfm 1921 2242 2562 2882 3202 3843 4483 5123
Meter
3
/minute 54.4 63.5 72.5 81.6 90.7 108.8 126.9 145.1
Discharge air opening area
Foot
2
2.56 2.56 3.51 3.51 4.79 4.79
Meter
2
0.24 0.24 0.33 0.33 0.45 0.45
Output velocity
fpm 752 877 1003 820 911 802 936 1069
Meter/minute 229 267 306 250 278 244 285 326
Open fan motor size
Horsepower
1/6 1/6 1/4 1/4 1/2 1/2
Enclosed fan motor size 1/4 1/4 1/4 1/2 1/2
Fan motor speed rpm 1050 1050 1050 1050
Fan diameter Inches 18 18 20 20 24 24
Sound level @ 15 feet dba 51 52 53 56 56 59 61 62
1
CSA ratings for elevations up to 2,000 feet.
2
Size shown is for gas connection to a single-stage gas valve—not supply line size.
3
Smaller and/or larger vent and combustion air pipe diameters may be permissible. Refer to appropriate venting instructions listed in Table 1.
4
MOCP = 2.25 × (largest motor FLA) + smallest motor FLA. Answer is rounded to the next lower standard circuit breaker size.
To Next Page
Loading...
Need help?
General
