Raypak 1005 operating instructions Initial Start-up, Preparation, Start-Up, Required tools

Initial Start-up

Required tools

•(1) 12-0-12 (24” scale) U-tube manometer

•(2) 6-0-6 (12” scale) U-tube manometer

•Screwdrivers (assorted sizes and shapes)

•(1) Crescent wrench (8” or 10”)

•(1) Multi-meter

•(1) Amp probe

(Metric Allen wrenches will be required for servicing the gas valve, but not during start-up)

NOTE: Digital manometers are not recommended.

Preparation

WARNING: Do not turn on gas at this time.

Check Power Supply

With multi-meter at incoming power, check voltage between:

Hot - Common (≈120 VAC)

Hot - Ground (≈120 VAC) Common - Ground (< 1 VAC)

WARNING: If Common - Ground is > 1 VAC,

STOP: Contact electrician to correct ground failure. Failure to do this may burn out 120V-24V transformer, or may cause other safety control damage or failure.

Attach Manometers to Measure Pressures

1.Turn off main gas valve.

2.Attach (1) 12” scale manometer to an upstream bleedle valve on the gas supply pipe to the heater (Measure point “A” in Fig. 52).

3.Attach (1) 24” scale manometer to the manifold pressure tap located on the elbow downstream of the valve (Measure point “D” in Fig. 52).

4.Attach (1) 12” scale manometer near the fan-prov- ing switch. Pull black cap from air pressure switch tee and connect the manometer. NOTE: Retain caps for reinstallation later.

CD

Fig. 52: Gas Pressure Measurement Locations

Check Gas Supply Pressure

1.Slowly turn on main gas shut-off valve.

2.Read the gas supply pressure from the manome- ter; minimum supply pressure for natural gas is 4.0 in. WC, recommended supply is 7.0 in. WC, mini- mum supply pressure for propane gas is 4.0 in. WC, recommended supply is 11.0 in. WC (dynam- ic readings, full fire input).

3.If the gas pressure is greater than 14.0 in. WC, turn off the main gas shut-off valve.

Start-Up

NOTE: The values in Tables V, W and X represent the conditions when the heater is at full firing rate at sea level.

1.Turn power on.

2.Turn on the heater, wait approximately 15 seconds after the blower starts, and the igniter should start to glow (observable through the observation port located at the front, bottom of the heater). Look into the sight glass located at the bottom of the front panel to check igniter operation. Gas valve should open in 45-60 seconds.

3.The heater ignites at 50% of full rate (as indicated on the LCD display of the temperature control located in the upper right of the front panel).

4.If the burner fails to light on the first trial, it will go into lockout with the optional single-try ignition module. If the heater is equipped with the standard three-try ignition module, it will try for ignition up to three times before going into lockout.

5.Wait until the controller indicates 100% on the fir- ing rate display screen (approximately 30 seconds).