Roberts Gorden Furnace UHD[S] 150 400 User Guide

®
Combat UHD[S] - Series  
Tubular Duct Furnaces  
t UHD[S] Models 75 - 125  
UHD[S] Models 150 - 400 u  
82% efficiency with use of tubular heat  
Helps reduce dirt build-up on burners and helps  
extend life of heat exchanger with separated  
combustion units.  
exchangers and inshot burners  
Reliable ignition with direct spark ignition  
burners.  
Longer life and less maintenance with optional  
stainless steel heat exchangers.  
Installation and operation flexibility with rear  
or top air and flue connections (Models UHD[S]  
75 - 125 only).  
Install downstream of refrigeration system with  
option stainless steel heat exchangers and drain  
pan (Models UHD[S] 150-400 only).  
1.800.828.7450  
TM  
Quality in Any Language  
 
®
Combat UHD[S] 150 - UHD[S] 400 Clearances and Dimension Data  
Clearances to Combustibles - Low Profile UHD[S] Range (Models 75 - 125)  
Above Heater  
Below Heater  
To Side of Heater  
Access Side Door  
To Flue  
6"  
6"  
6"  
31" Access Clearance  
2"  
Dimension Data - Standard UHD[S] Range (Models 150 - 400)  
Model  
150  
175  
200  
225  
43  
250  
43  
300  
350  
400  
50  
'A' Width  
[in]  
[in]  
[in]  
[in]  
[in]  
43  
43  
43  
50  
50  
'B' Height  
27  
27  
35.25  
1.25  
17.6  
17  
35.25  
1.25  
17.6  
17  
35.25  
1.25  
17.6  
17  
43.5  
1.25  
24.7  
13.6  
43.5  
1.25  
24.7  
13.6  
43.5  
1.25  
24.7  
13.6  
'C' Duct Connectors  
'D' Support Spacing  
'F' Center of Flue  
1.25  
17.6  
9.5  
1.25  
17.6  
9.5  
'G' Flue Center to  
Air Intake Center  
6
6
6
6
6
7
7
7
[in]  
[in]  
[in]  
[in]  
'H' Position of Flue  
4.5  
5.9  
3.4  
4.5  
5.9  
3.4  
4.75  
5.9  
4.75  
5.9  
4.75  
5.9  
4.9  
8.7  
6.2  
4.9  
8.7  
6.2  
4.9  
8.7  
6.2  
'J' Gas Inlet Position  
'K' Electrical Supply Position  
3.4  
3.4  
3.4  
Top View  
Heater must be supported  
at these points from above  
or below.  
D
C
4 x 3/8Captive Nuts Provided  
Support  
Centers  
19.4”  
End View  
C
25.5”  
Rear View  
Air Intake  
(UHDS only)  
F
G
B
H
Flue  
Gas  
Supply  
Thermostat  
Connection  
Electrical  
Supply  
6.5”  
2.4”  
K
J
A
 
®
Combat UHD[S]-Series Technical Data  
Model  
75  
100  
125  
150  
175  
200  
225  
250  
300  
350  
400  
Total Input  
[Btu/h] x [1000]  
[Btu/h] x [1000]  
75  
100  
82  
125  
150  
123  
175  
200  
164  
225  
250  
205  
300  
246  
350  
385  
Total Output  
Efficiency  
61.5  
102.5  
143.5  
184.5  
288.6  
315.7  
82% - All Models  
Number of Burners  
Gas Connection  
Inlet Pressure  
5
6
7
7
8
9
10  
¾
11  
¾
12  
¾
14  
¾
14  
¾
[in]  
½
½
½
½
½
½
[in wc] NG Min.  
5
LPG Propane Min. 12  
NG & LPG Propane Max. 14  
Electrical Supply  
115 V / 60 Hz / 1 Ø - All Models  
Minimum Air Volume  
[CFM]  
[°F]  
850  
950  
1020  
1360  
83  
1400  
95  
2050  
73  
2100  
80  
2350  
80  
2700  
86  
3120  
86  
3420  
86  
Temperature Rise @  
Minimum Air Volume  
68  
78  
92  
Heat Exchanger Pressure Drop  
@ Minimum Air Volume  
0.06  
2650  
22  
0.05  
3660  
22  
0.06  
4750  
20  
0.02  
5800  
20  
0.03  
6850  
20  
0.025  
7750  
20  
0.035  
8300  
20  
0.05  
8850  
22  
0.02  
10200  
23  
0.03  
13600  
22  
0.04  
14200  
22  
[in wc]  
[CFM]  
Maximum Air Volume  
Temperature Rise @  
Maximum Air Volume  
[°F]  
Heat Exchanger Pressure Drop  
@ Maximum Air Volume  
0.36  
0.55  
0.98  
0.16  
0.29  
0.163  
0.253  
0.35  
0.27  
0.48  
0.53  
[in wc]  
Flue Size  
Air Intake  
Weight  
[in] 4 - All Models  
[in]  
[lb]  
4
4
4
4
4
4
4
4
5
5
5
81  
92  
97  
191  
211  
239  
249  
254  
325  
345  
345  
Installation Code and Annual Inspections:  
®
All installations and service of ROBERTS GORDON equipment must be performed by a contractor qualified in the installation and  
®
service of equipment sold and supplied by Roberts-Gordon and conform to all requirements set forth in the ROBERTS GORDON  
manuals and all applicable governmental authorities pertaining to the installation, service and operation of the equipment. To help facilitate  
®
optimum performance and safety, Roberts-Gordon recommends that a qualified contractor annually inspect your ROBERTS GORDON  
equipment and perform service where necessary, using only replacement parts sold and supplied by Roberts-Gordon.  
Further Information: Applications, engineering and detailed guidance on systems design, installation and equipment performance is avail-  
®
able through ROBERTS GORDON representatives. Please contact us for any further information you may require, including the Installation,  
Operation and Service Manual.  
This product is not for residential use.  
This document is intended to assist licensed professionals in the exercise of their professional judgement.  
Roberts-Gordon LLC  
1250 William Street  
P.O. Box 44  
Buffalo, NY 14240-0044 USA  
Telephone: 716.852.4400  
Fax: 716.852.0854  
European Office:  
Roberts Gordon Europe Limited  
Telephone: +44(0) 121 506 7700  
Fax: +44(0) 121 506 7701  
Toll Free: 800.828.7450  
© 2008 Roberts-Gordon LLC All rights reserved. No part of this work covered by the copyrights herein may be reproduced or copied in any form or  
by any means – graphic, electronic, or mechanical, including photocopying, recording, taping, or information storage  
and retrieval systems – without written permission of Roberts-Gordon LLC.  
Printed in U.S.A.  
UHDSNA  
5M 0308 Orig.  
 

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