Raypak 5042004 operating instructions Water Heater WH1, Modes, Default Setting, Range

		Water Heater (WH1)
Item	Modes		Default Setting	Range
Boil Target		2	140°F	OFF, 70 to 190°F
		3, 7	160°F	OFF, 70 to 190°F
Boil Max	2,	3, 6, 7	180°F	OFF, 120 to 190°F
Boil Min	2, 3, 7		135°F	OFF, 80 to 180°F
‘Burner’ Delay		All	0:00 min	0:00 to 3:00 min
Boil Mass		All	1 (Low)	1 (Low), 2 (Med), 3 (High)
Diff	2, 3, 7		Auto	Auto, 2 to 42°F
DHW Target		3	120°F	OFF, 70 to 190°F
DHW Diff		3	5°F	2 to 10°F
‘Pump’ Dly		All	3:00 min	OFF, 0:20 to 9:55 min, ON
Units		All	°F	°F or °C
Mode		N/A	3	2, 3, 7
External Input Signal		7	2 to 10 VDC	2 to 10 VDC or 0 to 10 VDC
Offset		7	0°F	-10°F to 10°F

Table S: Modulating Temperature Control Default Setpoints—Water Heater

EXTERNAL INPUT SIGNAL – Selects external input signal range (0-10VDC or 2-10VDC):

0-10VDC or 0-20 mA external input signal – When the 0-10VDC signal is selected, an input voltage of 1 VDC corresponds to a boiler target temperature of 50°F (10°C). An input voltage of 10 VDC corresponds to a boiler target temperature of 220°F (104°C). As the voltage varies between 1 VDC and 10 VDC, the boiler target temperature varies linearly between 50°F (10°C) and 220°F (104°C) (refer to Table O). If a volt- age below 0.5 VDC is received, the boiler target temperature is displayed as “– – –” indicating that there is no longer an internal call for heat. A 0-20 mA signal can be converted to a 0-10 VDC signal by installing a 500 Ω resistor on the external input signal device’s terminals.

2-10VDC or 4-20 mA external input signal – When the 2-10VDC signal is selected, an input voltage of 2 VDC corresponds to a boiler target temperature of 50°F (10°C). An input voltage of 10 VDC corresponds to a boiler target temperature of 220°F (104°C). As the voltage varies between 2 VDC and 10 VDC, the boiler target temperature varies linearly between 50°F (10°C) and 220°F (104°C) (refer to Table P). If a volt- age below 1.5 VDC is received, the boiler target temperature is displayed as “– – –” indicating that there is no longer an internal call for heat. A 4-20 mA signal can be converted to a 2-10 VDC signal by 35

installing a 500 Ω resistor on the external input signal device’s terminals.

FP - Flame proof warning.

MODE - Operating mode of the heater.

OFFSET - The Offset setting allows the boiler target temperature to be fine tuned to the external input sig- nal. The control reads the external input signal and converts this to a boiler target temperature. The Offset setting is then added to the boiler target temperature. OUTDR - Outdoor air temperature.

OUTDR DESIGN - Design outdoor air temperature used in the heat loss calculation.

OUTDR START - Starting outdoor air temperature. PUMP DLY - Sets the operating time of the pump once the CFH is satisfied.

TANK - Current DHW tank temperature (Mode 3). TANK DIFF - Storage tank differential (Mode 3). TANK TARGET - Target temperature in the DHW storage tank (Mode 3).