Raypak X-THERM 1005–2005 Installation & Operating Instructions Manual

Also see for 1005-2005: Specification sheet Specifications

Check Gas Supply Pressure1. 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 4.0in. 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-Up1. Turn power on.2. Turn on the heater, wait approximately 15 secondsafter the blower starts, and the igniter should startto glow (observable through the observation portlocated at the front, bottom of the heater). Lookinto the sight glass located at the bottom of thefront panel to check igniter operation. Gas valveshould open in 45-60 seconds.3. The heater ignites at 50% of full rate (as indicatedon the LCD display of the temperature controllocated in the upper right of the front panel).4. If the burner fails to light on the first trial, it will gointo lockout with the optional single-try ignitionmodule. If the heater is equipped with the standardthree-try ignition module, it will try for ignition up tothree times before going into lockout.5. Wait until the controller indicates 100% on the fir-ing rate display screen (approximately 30seconds).Initial Start-upRequired 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 servicingthe gas valve, but not during start-up)PreparationCheck Power SupplyWith multi-meter at incoming power, check voltagebetween:Hot - Common (≈120 VAC)Hot - Ground (≈120 VAC)Common - Ground (< 1 VAC)Attach Manometers to Measure Pressures1. Turn off main gas valve.2. Attach (1) 12” scale manometer to an upstreambleedle valve on the gas supply pipe to the heater(Measure point “A” in Fig. 47).3. Attach (1) 24” scale manometer to the manifoldpressure tap located on the elbow downstream ofthe valve (Measure point “D” in Fig. 47).4. Attach (1) 12” scale manometer near the fan-prov-ing switch. Pull black cap from air pressure switchtee and connect the manometer. NOTE: Retaincaps for reinstallation later.WARNING: If Common - Ground is > 1 VAC,STOP: Contact electrician to correct ground failure.Failure to do this may burn out 120V-24Vtransformer, or may cause other safety controldamage or failure.GASTO BURNERA BC DFig. 47: Gas Pressure Measurement LocationsNOTE: The values in Tables V, W and X representthe conditions when the heater is at full firing rate atsea level.NOTE: Digital manometers are not recommended.WARNING: Do not turn on gas at this time.California Hot Water Supply, Inc.(800) 249-724443