Installation
36
RT-SVX35H-EN
Connecting the Gas Supply Line to the
Furnace Gas Train
Follow the steps below to complete the installation
between the supply gas line and the furnace. Refer to
for the appropriate gas train
configuration.
1. Connect the supply gas piping using a "ground-joint"
type union to the furnace gas train and check for leaks.
2. Adjust the inlet supply pressure to the recommended
7" to 14" w.c. parameter for natural gas.
3. Ensure that the piping is adequately supported to
avoid gas train stress.
Table 7.
Modulating gas heat settings
Natural Gas
Heater Size (MBH)
Gas Orifice
Full Modulation
Partial Modulation
Valve Actuator
Air Damper
Actuator Voltage
Range (VDC)
Air Damper
Actuator Voltage
Range (VDC)
Left (Coarse)
Setting
Right (Fine)
Setting
500
#21
7 - 10
7 - 9.7
2.3
-1
850
#H
6 - 10
6 - 8.7
1.3
-1
1000
#N
5 - 10
5 - 8.7
0.9
0
LP
Heater Size (MBH)
Gas Orifice
Full Modulation
Partial Modulation
Valve Actuator
Air Damper
Actuator Voltage
Range (VDC)
Air Damper
Actuator Voltage
Range (VDC)
Left (Coarse)
Setting
Right (Fine)
Setting
500
#34 / #53
7 - 10
7 - 9.7
6
1
850
#32
6 - 10
6 - 8.7
3.2
1
1000
#29
5 - 10
5 - 8.7
1.9
0
Note:
Valve actuator settings are approximate and may require “fine tuning” to properly set. Right (fine) settings given are in notches from the “zero”
midpoint location on sight gage.
Table 8.
Gas heating capacity altitude correction factors
Capacity
Multiplier
Altitude (Ft.)
Sea Level
2001
2501
3501
4501
5501
6501
To 2000
To 2500
To 3500
To 4500
To 5500
To 6500
To 7500
1.00
.92
.88
.84
.80
.76
.72
Note:
Correction factors are per AGA Std. 221.30 - 1964, Part VI, 6.12. Local codes may supersede.
Table 9.
Specific gravity multipliers
Specific Gravity
Multiplier
0.50
1.10
0.55
1.04
0.60
1.00
0.65
0.96
Figure 16. 1000 MBH - unit gas trains (natural gas)
Summary of Contents for IntelliPak WEHE Series
Page 15: ...General Information RT SVX35H EN 15 Figure 1 Unit component layout and ship with locations...
Page 17: ...Installation RT SVX35H EN 17 Figure 2 Typical control module location...
Page 44: ...Installation 44 RT SVX35H EN Figure 27 Typical field power wiring for W_HE casings 2 through 6...
Page 56: ...Installation 56 RT SVX35H EN Figure 32 Wiring notes for CV controls...
Page 60: ...Installation 60 RT SVX35H EN Figure 35 Wiring notes VAV...
Page 68: ...System Start up 68 RT SVX35H EN Figure 38 Typical fenwall ignition control system...
Page 69: ...System Start up RT SVX35H EN 69 Figure 39 Typical Fenwall ignition control system...
