Installation guide

035-20530-001Rev.B(0804)
Part 5: Additional Testing Procedures
A. Measure Gas Pressure 3. Allow burner to operate 5 minutes.
a. Remove gas valve OUT PRESS TAP plug using 4. Measure time required (in seconds) for gas meter 2
3/16" Alien wrench. Install 1/8 NPT hose barb fit- cubic foot dial to rotate one complete turn (or 1/2
ting. See Figure 51. cubic foot dial to rotate 4 complete turns).
5. Calculate input:
FIGURE 51 : Pressure tap
B,
b. Connect manometer positive (+) pressure hose
fitting to OUT PRESS TAP hose barb fitting.
c. Follow OPERATING INSTRUCTIONS to place
furnace in operation.
d. Allow burner to operate 30-60 seconds. Measure
Outlet (Manifold) Gas Pressure. Adjust pressure
to 3.5" + 0.2 w.c. for natural gas, or 10.0" _+0.2
w.c. for LPipropane.
e. Follow instructions TO TURN OFF GAS TO
APPLIANCE.
f. Remove hose barb from gas valve. Install plug.
4. Follow OPERATING INSTRUCTIONS to place fur-
nace in operation.
5. Operate furnace through at least one (1) complete
heating cycle to confirm proper operation.
Measure Input Rate
1. Adjust controls on all other gas-fired appliances to
prevent operation. Extinguish pilot(s), if applicable.
Follow instructions provided by the appliance manu-
facturer.
2. Follow OPERATING INSTRUCTIONS to place fur-
nace in operation.
[Gas Heating Value] 2 x 7200
Input
Time
2. Assume 1030 BTU per cubic foot for natural gas if gas
supplier cannot provide exact value.
C. Measure Static Pressure
1. Verify upper door is installed and furnace burner and
blower are operating in heating speed.
2. Supply Static Pressure.
a. Remove top screws from coil cabinet cover plates
(3 total).
b. Connect manometer positive (+) pressure hose
fitting to Static Pressure Probe.
c. Insert static pressure probe into each screw hole.
Insert probe straight into hole 6". Probe must be
level (horizontal) for proper measurement. See
Figure 52.
FIGURE 52: Measuring supply static pressure
Part 6: Submit Claim
A. Mail Documentation
1. Submit original DGAT Program Claim to:
York International
Attn: Warranty Dept.
P.O. Box 385
Norman, OK 73070
Unitary Products Group 13