Raypak HI DALTA HD101 User Manual download pdf (Page 19)

Install a separate disconnect means for each load.

Use appropriate-sized wire as defined by NEC, CSA

and/or local code. All primary wiring should be 125% of

minimum rating.

It is strongly recommended that all individually-pow-

ered control modules and the heater should be

supplied from the same power source.

Surge Protection

Microprocessor-based and solid state controls are vul-

nerable to damage from voltage and amperage

fluctuations in the power supply. All sensitive control

components should be protected by a suitable com-

mercial-grade surge protection device.

If any of the original wire as supplied with the heater

must be replaced, it must be replaced with 105°C wire

or its equivalent.

Check the Power Source

Making the Electrical Connections

Refer to Fig. 14 and the Wiring Diagram.

1. Verify circuit breaker is properly sized by referring

to heater rating plate. A dedicated circuit breaker

should be provided.

2. Turn off all power to the heater. Verify that power

has been turned off by testing with a volt-ohm

meter prior to working with any electrical connec-

tions or components.

3. Observe proper wire colors while making electrical

connections. Many electronic controls are polarity

sensitive. Components damaged by improper

electrical installation are not covered by warranty.

4. Provide an external surge suppressor capable of

maintaining system integrity.

Fig. 14: Check Power Source

WARNING: Using a volt-ohm meter (VOM), check

the following voltages at the terminal block inside the

unit. Make sure proper polarity is followed and house

ground is proven.

Model

No.

nput

/4”

”

-1/4”

-1/2”

(KBTUH) N P N P N P N P

HD101 100 105 385 340

HD151 150 50 180 160 530 600

HD201 199 30 95 95 355 360

HD251 250 20 50 60 230 240

HD301 299 15 35 45 170 170 550 360

HD401 399 5 20 25 80 100 365 210

Table H: Maximum Equivalent Pipe Length

Natural gas – 1,000 BTUH per ft

, .60 specific gravity at 0.5 in. WC pressure drop

Propane gas – 2,500 BTUH per ft

, 1.50 specific gravity at 0.5 in. WC pressure drop

AC = 108 Volts AC Minimum, 132 Volts AC MAX

AB = 108 Volts AC Minimum, 132 Volts AC MAX

BC = < 1 Volt AC

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Raypak HI DALTA HD101 User Manual Page 19

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