Hot Water - Raypak HD401 Installation & Operating Instructions Manual

5. Provide overload protection and a disconnect
means for equipment serviceability as required by
local and state code.
6. Install heater controls, thermostats, or building
management systems in accordance with the
applicable manufacturer's instructions.
7. Conduit should not be used as the ground. There
must be a solidly wired ground.
NOTE: A grounding electrode conductor shall be
used to connect
conductors, the equipment enclosures, and the
grounded service conductor to the grounding
electrode.
Electrical Connections — Domestic

Hot Water

DANGER—SHOCK
electrical power to the heater is disconnected to
avoid potential serious injury or damage to
components.
CAUTION: Label all wires prior to disconnection
when servicing controls. Wiring errors can cause
improper and dangerous operation. Verify proper
operation after servicing.
NOTE: Minimum 18 AWG, 105°C, stranded wire
must be used for all low voltage (less than 30 volts)
external connections to the unit. Solid conductors
should not be used because they can cause
excessive tension on contact points. Install conduit
as appropriate. All high voltage wires must be the
same size (105°C, stranded wire) as the ones on the
unit or larger.
Installer action is required to electrically enable your Hi
Delta heater to operate after making the power con-
nections. You must use Terminal Block connections 1
through 4 for the temperature controller, as shown in
Fig. 16. This will be done based on the controller
option selected with your heater order.
For operation with a Temp-Tracker controller, refer to
the Temp-Tracker
Instructions, Raypak Catalog number 5000.66 (P/N
241177).
the equipment grounding
HAZARD:
Make
Installation and Operating
2
1 3
STAGE 1
STAGE 2
JUMPERED
WHEN NOT USED
1
HOT
Fig. 16: Terminal Block Connections
Consult the wiring diagram shipped with the heater in
the instruction packet. The Stage 1 connections are for
the remote tank control through the heaters 24 volt
transformer. DO NOT attach line voltage to the
Stage 1 connection. Before starting heater, check to
ensure proper voltage to heater and pump.
sure
STAGE 1
CONNECTION
ATTACH STAGE 1 CONNECTIONS
ON HEATER TO THE SINGLE STAGE
TANKSTAT AS SHOWN IN THE DIAGRAM ABOVE.
Fig. 17: Single Stage Tankstat
20
4 5 6 7 8 9
ENABLE /
INTERLOCK / ALARM
DISABLE OR
LOUVER SW DRY
SEQUENCER
CONTACTS
(OPTIONAL) JUMPERED
WHEN NOT USED
2 4
3 5
COM G HOT COM
SAFETY VALVE
POWER IN
SINGLE
STAGE
TANKSTAT
10 11 12
24V 24VR
CWS / CWR
FAN / DAMPER
(PILOT DUTY)
(OPTIONAL)
6
HOT
PUMP