Start up, Initial start up, Fire or explosion hazard – State Industries ULTRA FORCE 101 User Manual

Page 52

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52

prior to start up

installation and start up of this water heater requires abilities

and skills equivalent to that of a licensed tradesman in the field

involved, see Qualifications on page 6.
Do not place the water heater in operation if any part has been

under water. immediately call a qualified service technician to

inspect the water heater and to replace any part of the control

system and any gas control which has been under water.
Light the water heater in accordance with the Lighting and

Operation instruction label on the water heater and in this manual

beginning on page 56.
The water heaters covered by this manual are equipped with an

electronic control system (see page 44) which automatically

sequences the Combustion blower, pre and post purging of the

combustion chamber, the Hot Surface igniter, the 24 Volt Gas

Valve, main burner ignition, and flame sensing. The control

system will lock out after three unsuccessful ignition attempts.
before attempting start up, thoroughly study and familiarize

yourself with the exact Sequence Of Operation, see the written

Sequence Of Operation on page 58 and the Sequence Of

Operation Flow Chart on page 59.
be certain that the water heater is full of water, that air is purged

from the gas and water lines and that there are no leaks in the

gas and water lines. Ensure all inlet water valves are open.
filling the water heater
Follow these steps to fill the water heater prior to start up.
1. Close the heater drain valve.
2. Open a nearby hot water faucet to permit the air in the system

to escape.

3. Fully open the cold water inlet valve allowing the piping and

water heater to fill with water.

4. Close the hot water faucet opened in Step 2 as water starts

to flow.

supply gas line purging

Fire or Explosion Hazard

Read instruction manual before

installing, using or servicing

water heater.

To avoid risk of fire or explosion purge discharge must not

enter into confined areas or spaces where ignition can occur.
The area must be well ventilated and all sources of ignition

must be deactivated or removed.

Gas line purging is required with new piping or systems in

which air has entered.

Use only the gas shown on the water heater rating label.
Keep ignition sources away from faucets after extended

periods of non-use.

1. Close the main Gas Shutoff Valve, see Figure 52 on page 39.

2. Purge all air from the supply gas line up to the water heater’s

main Gas Shutoff Valve.

3. When all air has been purged from the supply gas line,

tighten all supply gas line connections.

4. Check for gas leaks, see Gas Line Leak Testing on page 40,

and repair any leaks found.

initial start up

reQuired test eQuipment

• Two U-tube manometers, recommended ranges; 0-14” W.C.

(0-3.5 kPa) and 0-35” W.C. (0-8.7 kPa) or pressure gauges.

• Two digital manometers can be used in place of U-tube

manometers or pressure gauges. recommended ranges;

-14.00 to +14.00” W.C. (0-3.5 kPa) resolution 0.01” W.C.

and 0-35” W.C. (0-8.7 kPa) resolution 0.10” W.C.

note: All test equipment must be acclimated to ambient

temperature before calibration and use.
preparation
1. Using the control system menus, change the Operating Set

Point to the lowest temperature setting, see Operating Set

Point And Differential Adjustment on page 47.

2. Turn the water heater’s on/off switch to the “off” position.
3. Close the main Gas Shut Off Valve, see Figure 52 on page 39.
4. Wait five (5) minutes for any residual gas to clear.
5. Connect one manometer (higher range) to an available test

port for the supply gas pressure to the water heater:
On SUF 120 and 150 models there is a 1/8" NPT Tee fitting

and pipe nipple installed for the Low Gas Pressure switch

on the inlet side of the 24 Volt Gas Valve with a 1/8" pipe

plug for this purpose. remove the 1/8 inch pipe plug from the

bottom of the Tee fitting and install a barb fitting to connect

the manometer sensing tube, see Figure 58 on page 53.
On SUF 199 and 250 models there are test ports for supply

and manifold gas pressure readings on the gas valve. Using

a small flat tip pocket screw driver - open the needle valve

inside the supply gas pressure test port one full turn only;

turn the needle valve screw counter-clockwise to open the

valve. Slide the manometer sensing tube over the top of the

test port, see Figure 59 and Figure 60 on page 53.

6. Connect one manometer (lower range) to an available test

port for manifold gas pressure to the main burner:
SUF 120 & 150 models: remove the 1/8 inch pipe plug from

the body of the gas valve on the outlet side and install a barb

fitting to connect the manometer sensing tube, see Figure 57

on page 53.
SUF 199 & 250 models: Using a small flat tip pocket

screw driver - open the needle valve inside the manifold

gas pressure test port one full turn only; turn the needle

valve screw counter-clockwise to open the valve. Slide the

manometer sensing tube over the top of the test port, see

Figure 59 and Figure 60 on page 53.

7. Open the main Gas Shutoff Valve.
8. measure and record the supply gas pressure, this is a “static”

supply gas pressure reading; while the water heater is not

firing. Adjust supply gas pressure as necessary, see Supply

Gas Pressure Adjustment on page 54.

start up

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