Roberts Gorden UHD[X][S][R] 150 service manual Air Flow And Temperature Rise Ranges, Suspension

UHD STANDARD DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL

5.1.3 Air Flow And Temperature Rise Ranges

Model	Rate	Air Flow		Temperature Rise
	(Btu/h)	Minimum (CFM)	Maximum (CFM)	Minimum (°F)	Maximum (°F)
UHD[X][S][R] 150	150,000	1,360	5,800	20	83
UHD[X][S][R] 175	175,000	1,400	6,850	20	95
UHD[X][S][R] 200	200,000	2,050	7,750	20	73
UHD[X][S][R] 225	225,000	2,100	8,300	20	80
UHD[X][S][R] 250	250,000	2,350	8,850	22	80
UHD[X][S][R] 300	300,000	2,700	10,200	23	86
UHD[X][S][R] 350	350,000	3,120	13,600	22	86
UHD[X][S][R] 400	385,000	3,420	14,200	22	86

5.2 Suspension

WARNING

Crush Hazard

Use 3/8" threaded rod minimum.

Failure to follow these instructions can result in death, injury or property damage.

When handling or supporting the heater from below, ensure that the weight is taken at the support points. For typical suspension, See Page 8, Figure 3.

The gas or electrical supply lines must not be used to support the heater.

Do not locate the gas or electrical supply lines directly over the path of the flue products from the heater.

The heater must be installed in a location that is readily accesible for servicing.

Four suspension points (3/8" nuts) are located on the top of the heater. Drop rods must be 3/8" diameter mild steel.

Figure 3: Suspension Methods

The heater must be installed in accordance with clearances to combustibles as indicated on the wall tag and in this manual.

NOTE: Duct supports not shown. Duct supports and duct are not provided by manufacturer.

		Ensure all suspension
		hardware is torqued to
Unistrut		a minimum of 20 ft lbs.
	Channel Nut

Washer

Nut

3/8" Threaded Rod

Cone Point

Set Pin

Window

Clamp

3/8"		Unistrut
	Threaded
	Rod
	Nut
Washer
	Riv
	Nut	Support Points

8